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type: MusicGroup
genre: classical
genre: opera
description: Teodor Currentzis ( ; born 24 February 1972) is a Greek and Russian conductor, musician and actor. He is artistic director of the ensembles MusicAeterna and Utopia and was chief conductor of the SWR S
popularity: 46
followers: 22611
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:24:56Z
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album: Mozart: Don Giovanni
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  date published: 2016-11-04
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    by artist: Wolfgang Amadeus Mozart
    by artist: Teodor Currentzis
    by artist: musicAeterna
    in album: Mozart: Don Giovanni
      type: MusicAlbum
      date published: 2016-11-04
    genre: classical
    genre: classical-era
    genre: classical-piano
    genre: opera
    genre: chamber-music
    genre: concerto
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    additional property: OTSVerifyInstructions
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      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:30:09Z
    audio: Don Giovanni, K. 527: Ouvertura
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  track: Don Giovanni, K. 527: Act I: Io deggio ad ogni patto (Recitativo: Leporello, Don Giovanni)
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      date published: 2016-11-04
    genre: classical
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    genre: classical-piano
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    genre: chamber-music
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-30T01:32:48Z
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  track: Don Giovanni, K. 527: Act I: Notte e giorno faticar (No. 1, Introduzione: Leporello)
  track: Don Giovanni, K. 527: Act I: Fin ch'han dal vino (No. 11, Aria: Don Giovanni)
  track: Don Giovanni, K. 527: Act I: Non sperar, se non m'uccidi (No. 1, Introduzione: Donna Anna, Don Giovanni, Leporello, Il Commendatore)
  track: Don Giovanni, K. 527: Act I: Masetto: senti un po' (Recitativo: Zerlina, Masetto)
  track: Don Giovanni, K. 527: Act I: Ah...soccorso (No. 1, Introduzione: Il Commendatore, Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Batti, batti, o bel Masetto (No. 12, Aria: Zerlina)
  track: Don Giovanni, K. 527: Act I: Leporello, ove sei? (Recitativo: Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Guarda un po' come seppe (Recitativo: Masetto, Don Giovanni, Zerlina)
  track: Don Giovanni, K. 527: Act I: Presto presto pria ch'ei venga (No.13 Finale, Allegro assai: Masetto, Zerlina)
  track: Don Giovanni, K. 527: Act I: Fuggi, crudele, fuggi! (Duetto: Donna Anna, Don Ottavio)
  track: Don Giovanni, K. 527: Act I: Su svegliatevi, da bravi (Don Giovanni, Servi)
  track: Don Giovanni, K. 527: Act I: Orsù, spicciati presto (Recitativo: Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Tra quest'arbori celata (Andante: Zerlina, Don Giovanni, Masetto)
  track: Don Giovanni, K. 527: Act I: Ah chi mi dice mai (No. 3, Aria: Donna Elvira, Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Bisogna aver coraggio (Donna Elvira, Don Ottavio, Donna Anna)
  track: Don Giovanni, K. 527: Act I: Chi è là? (Recitativo: Donna Elvira, Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Signor, guardate un poco (Menuetto: Donna Elvira, Don Ottavio, Donna Anna, Leporello, Don Giovanni)
  track: Don Giovanni, K. 527: Act I: Madamina, il catalogo è questo (No. 4, Aria: Leporello)
  track: Don Giovanni, K. 527: Act I: Protegga il giusto cielo (Adagio: Donna Anna, Don Ottavio, Donna Elvira)
  track: Don Giovanni, K. 527: Act I: In questa forma dunque (Recitativo: Donna Elvira)
  track: Don Giovanni, K. 527: Act I: Riposate, vezzose ragazze (Allegro: Don Giovanni, Leporello, Masetto, Zerlina)
  track: Don Giovanni, K. 527: Act I: Giovinette che fate all'amore (No. 5, Coro: Zerlina, Masetto, Coro di contadini)
  track: Don Giovanni, K. 527: Act I: Venite pur avanti, vezzose mascherette (Maestoso: Leporello, Don Giovanni, Donna Anna, Donna Elvira, Don Ottavio, Masetto, Zerlina)
  track: Don Giovanni, K. 527: Act I: Manco male è partita (Recitativo: Don Giovanni, Leporello, Zerlina, Masetto)
  track: Don Giovanni, K. 527: Act I: Ecco il birbo che t'ha offesa (Andante maestoso: Leporello, Don Giovanni, Donna Anna, Donna Elvira, Don Ottavio, Masetto, Zerlina)
  track: Don Giovanni, K. 527: Act I: Ho capito, signor sì (No. 6, Aria: Masetto)
  track: Don Giovanni, K. 527: Act I: Trema, trema, o scellerato! (Allegro: Don Giovanni, Leporello, Don Ottavio, Donna Anna, Donna Elvira)
  track: Don Giovanni, K. 527: Act I: Alfin siam liberati (Recitativo: Don Giovanni, Zerlina)
  track: Don Giovanni, K. 527: Act II: Eh via buffone (No. 14, Duetto: Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Là ci darem la mano (No. 7, Duettino: Don Giovanni, Zerlina)
  track: Don Giovanni, K. 527: Act II: Leporello. Signore. Vien qui (Recitativo: Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Fermati scellerato (Recitativo: Donna Elvira, Zerlina, Don Giovanni)
  track: Don Giovanni, K. 527: Act II: Ah taci, ingiusto core (No. 15, Terzetto: Donna Elvira, Leporello, Don Giovanni)
  track: Don Giovanni, K. 527: Act I: Ah fuggi il traditor (No. 8, Aria: Donna Elvira)
  track: Don Giovanni, K. 527: Act II: Amico, che ti par? (Recitativo: Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Mi par ch'oggi il demonio si diverta... Ah ti ritrovo ancor (Recitativo: Don Giovanni, Don Ottavio, Donna Anna; Recitativo: Donna Elvira)
  track: Don Giovanni, K. 527: Act II: Eccomi a voi! (Recitativo: Donna Elvira, Don Giovanni, Leporello)
  track: Don Giovanni, K. 527: Act I: Non ti fidar, o misera (No. 9, Quartetto: Donna Elvira, Donna Anna, Don Ottavio, Don Giovanni)
  track: Don Giovanni, K. 527: Act II: Deh vieni alla finestra (No. 16, Canzonetta: Don Giovanni)
  track: Don Giovanni, K. 527: Act I: Don Ottavio, son morta! (No. 10, Recitativo accompagnato: Donna Anna, Don Ottavio)
  track: Don Giovanni, K. 527: Act II: Non ci stanchiamo (Recitativo: Masetto, Don Giovanni)
  track: Don Giovanni, K. 527: Act I: Or sai chi l'onore (Aria: Donna Anna)
  track: Don Giovanni, K. 527: Act II: Metà di voi qua vadano (No. 17, Aria: Don Giovanni)
  track: Don Giovanni, K. 527: Act I: Dalla sua pace (No. 10a, Aria: Don Ottavio)
album: Mozart: Così fan tutte (Highlights)
album: Mozart: Così fan tutte
album: Mozart: Le nozze di Figaro (Highlights)
album: Mozart: Le nozze di Figaro, K. 492

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Don Giovanni, K. 527: Act I: Notte e giorno faticar (No. 1, Introduzione: Leporello)
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by artist: Wolfgang Amadeus Mozart
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by artist: musicAeterna
by artist: Vito Priante
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Don Giovanni, K. 527: Act I: Notte e giorno faticar (No. 1, Introduzione: Leporello)
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Don Giovanni, K. 527: Act I: Fin ch'han dal vino (No. 11, Aria: Don Giovanni)
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
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by artist: Dimitris Tiliakos
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  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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additional property: OTSVerifyInstructions
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62487bf6922b05727ee74d17a522b601ec11cf2ef13659bdaeaf0729b477126. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604419.
  date published: 2026-07-02T03:55:08Z
audio: Don Giovanni, K. 527: Act I: Fin ch'han dal vino (No. 11, Aria: Don Giovanni)
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Don Giovanni, K. 527: Act I: Non sperar, se non m'uccidi (No. 1, Introduzione: Donna Anna, Don Giovanni, Leporello, Il Commendatore)
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Myrtò Papatanasiu
by artist: Vito Priante
by artist: Mika Kares
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Don Giovanni, K. 527: Act I: Non sperar, se non m'uccidi (No. 1, Introduzione: Donna Anna, Don Giovanni, Leporello, Il Commendatore)
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Don Giovanni, K. 527: Act I: Masetto: senti un po' (Recitativo: Zerlina, Masetto)
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duration: PT1M10S
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
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  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: Don Giovanni, K. 527: Act I: Masetto: senti un po' (Recitativo: Zerlina, Masetto)
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Don Giovanni, K. 527: Act I: Ah...soccorso (No. 1, Introduzione: Il Commendatore, Don Giovanni, Leporello)
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duration: PT1M28S
duration ms: 88693
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
by artist: Mika Kares
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Don Giovanni, K. 527: Act I: Ah...soccorso (No. 1, Introduzione: Il Commendatore, Don Giovanni, Leporello)
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Don Giovanni, K. 527: Act I: Batti, batti, o bel Masetto (No. 12, Aria: Zerlina)
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duration: PT3M14S
duration ms: 194733
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Christina Gansch
in album: Mozart: Don Giovanni
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  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604421
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-22T17:48:40Z
audio: Don Giovanni, K. 527: Act I: Batti, batti, o bel Masetto (No. 12, Aria: Zerlina)
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Don Giovanni, K. 527: Act I: Leporello, ove sei? (Recitativo: Don Giovanni, Leporello)
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duration: PT0M40S
duration ms: 40693
explicit: false
by artist: Wolfgang Amadeus Mozart
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by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
in album: Mozart: Don Giovanni
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  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604396
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726c421188b0ea8e1c20b99553b115b3c04a7d2c82627aa9c8b166103f12f44f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604396.
  date published: 2026-07-02T03:55:08Z
audio: Don Giovanni, K. 527: Act I: Leporello, ove sei? (Recitativo: Don Giovanni, Leporello)
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Don Giovanni, K. 527: Act I: Guarda un po' come seppe (Recitativo: Masetto, Don Giovanni, Zerlina)
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duration: PT0M44S
duration ms: 44986
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
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  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604422
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9a6617a39278ce087713992044feddb6c8063e69e2547c5e09c8299ba29acf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604422.
  date published: 2026-07-29T21:09:47Z
audio: Don Giovanni, K. 527: Act I: Guarda un po' come seppe (Recitativo: Masetto, Don Giovanni, Zerlina)
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Don Giovanni, K. 527: Act I: Presto presto pria ch'ei venga (No.13 Finale, Allegro assai: Masetto, Zerlina)
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duration: PT0M50S
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by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
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  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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isrc code: USSM11604423
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604423
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f6bde8d3162e2773514353b65411ab860a1f6890441abc74be9e52d845cb30. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604423.
  date published: 2026-07-07T18:39:05Z
audio: Don Giovanni, K. 527: Act I: Presto presto pria ch'ei venga (No.13 Finale, Allegro assai: Masetto, Zerlina)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.571
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.689
  additional property: Energy
    type: PropertyValue
    value: 0.133
  additional property: Speechiness
    type: PropertyValue
    value: 0.109
  additional property: Acousticness
    type: PropertyValue
    value: 0.944
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.239
  additional property: Liveness
    type: PropertyValue
    value: 0.628
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.726
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.997
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Fuggi, crudele, fuggi! (Duetto: Donna Anna, Don Ottavio)
type: MusicRecording
duration: PT3M27S
duration ms: 207960
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Myrtò Papatanasiu
by artist: Kenneth Tarver
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604398
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T18:28:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x012cf05530f139c1e3242f0cb631b79b597a2f779e66e9664b6c988c2509fe70
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604398
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012cf05530f139c1e3242f0cb631b79b597a2f779e66e9664b6c988c2509fe70. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604398.
  date published: 2026-07-02T03:55:08Z
audio: Don Giovanni, K. 527: Act I: Fuggi, crudele, fuggi! (Duetto: Donna Anna, Don Ottavio)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.63
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.402
  additional property: Energy
    type: PropertyValue
    value: 0.095
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.13
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.158
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.566
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Don Giovanni, K. 527: Act I: Su svegliatevi, da bravi (Don Giovanni, Servi)
type: MusicRecording
duration: PT0M41S
duration ms: 41973
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604424
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:57:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3197be29b58a269c49d15825d23675ae087c5ffae453b8d61dd02a7459d922a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604424
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3197be29b58a269c49d15825d23675ae087c5ffae453b8d61dd02a7459d922a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604424.
  date published: 2026-07-07T18:39:05Z
audio: Don Giovanni, K. 527: Act I: Su svegliatevi, da bravi (Don Giovanni, Servi)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.543
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.624
  additional property: Energy
    type: PropertyValue
    value: 0.416
  additional property: Speechiness
    type: PropertyValue
    value: 0.071
  additional property: Acousticness
    type: PropertyValue
    value: 0.837
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.02
  additional property: Liveness
    type: PropertyValue
    value: 0.214
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.849
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.466
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Orsù, spicciati presto (Recitativo: Don Giovanni, Leporello)
type: MusicRecording
duration: PT1M51S
duration ms: 111586
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604399
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T13:50:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x052b930142361fc7a3864fb6684d9613f7c8a077156fdef126ce2c48e8658044
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604399
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T14:10:55Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052b930142361fc7a3864fb6684d9613f7c8a077156fdef126ce2c48e8658044. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604399.
  date published: 2026-07-22T14:10:55Z
audio: Don Giovanni, K. 527: Act I: Orsù, spicciati presto (Recitativo: Don Giovanni, Leporello)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.7
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.641
  additional property: Energy
    type: PropertyValue
    value: 0.074
  additional property: Speechiness
    type: PropertyValue
    value: 0.426
  additional property: Acousticness
    type: PropertyValue
    value: 0.937
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.356
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.297
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.524
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Don Giovanni, K. 527: Act I: Tra quest'arbori celata (Andante: Zerlina, Don Giovanni, Masetto)
type: MusicRecording
duration: PT2M7S
duration ms: 127813
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604425
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T19:30:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x103d229e1aad6cfb8500e369545e693a249f90e6f90ac1a7467565f46777b661
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604425
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103d229e1aad6cfb8500e369545e693a249f90e6f90ac1a7467565f46777b661. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604425.
  date published: 2026-07-29T19:35:34Z
audio: Don Giovanni, K. 527: Act I: Tra quest'arbori celata (Andante: Zerlina, Don Giovanni, Masetto)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.448
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.371
  additional property: Energy
    type: PropertyValue
    value: 0.091
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.611
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.338
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.844
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Don Giovanni, K. 527: Act I: Ah chi mi dice mai (No. 3, Aria: Donna Elvira, Don Giovanni, Leporello)
type: MusicRecording
duration: PT3M31S
duration ms: 211546
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
by artist: Karina Gauvin
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604400
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T02:17:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x934ff7781e1e03292819e1d56ffba686545020fbce5a82636ffbc1069d9736c7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604400
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934ff7781e1e03292819e1d56ffba686545020fbce5a82636ffbc1069d9736c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604400.
  date published: 2026-07-02T03:55:08Z
audio: Don Giovanni, K. 527: Act I: Ah chi mi dice mai (No. 3, Aria: Donna Elvira, Don Giovanni, Leporello)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 134.553
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.461
  additional property: Energy
    type: PropertyValue
    value: 0.1
  additional property: Speechiness
    type: PropertyValue
    value: 0.1
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.229
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.553
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Bisogna aver coraggio (Donna Elvira, Don Ottavio, Donna Anna)
type: MusicRecording
duration: PT0M55S
duration ms: 55266
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Myrtò Papatanasiu
by artist: Karina Gauvin
by artist: Kenneth Tarver
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604426
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:12:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6dcb40cbb0a423ceea3c1403d6d1ebafa8669ad78de7c8dbc96cc2d623f6cce0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604426
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcb40cbb0a423ceea3c1403d6d1ebafa8669ad78de7c8dbc96cc2d623f6cce0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604426.
  date published: 2026-07-07T18:39:05Z
audio: Don Giovanni, K. 527: Act I: Bisogna aver coraggio (Donna Elvira, Don Ottavio, Donna Anna)
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Don Giovanni, K. 527: Act I: Chi è là? (Recitativo: Donna Elvira, Don Giovanni, Leporello)
type: MusicRecording
duration: PT3M1S
duration ms: 181760
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
by artist: Karina Gauvin
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604401
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-22T13:51:57+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x177dcc7a27e4b186856f3267322da7d85b42834cf36b92c1988b8412bc8e5a09
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604401
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T14:03:35Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177dcc7a27e4b186856f3267322da7d85b42834cf36b92c1988b8412bc8e5a09. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604401.
  date published: 2026-07-22T14:03:35Z
audio: Don Giovanni, K. 527: Act I: Chi è là? (Recitativo: Donna Elvira, Don Giovanni, Leporello)
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  additional property: Tempo (BPM)
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  additional property: Danceability
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Don Giovanni, K. 527: Act I: Signor, guardate un poco (Menuetto: Donna Elvira, Don Ottavio, Donna Anna, Leporello, Don Giovanni)
type: MusicRecording
duration: PT1M1S
duration ms: 61880
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Myrtò Papatanasiu
by artist: Vito Priante
by artist: Karina Gauvin
by artist: Kenneth Tarver
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604427
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-06T09:13:17+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x1161f17be52690e6843f9b5a39ce07df9a54b29e7abe6d5bb77b1b82d16eb48b
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957046
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604427
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:04:01Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1161f17be52690e6843f9b5a39ce07df9a54b29e7abe6d5bb77b1b82d16eb48b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604427.
  date published: 2026-07-07T14:04:01Z
audio: Don Giovanni, K. 527: Act I: Signor, guardate un poco (Menuetto: Donna Elvira, Don Ottavio, Donna Anna, Leporello, Don Giovanni)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.712
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.552
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.817
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Don Giovanni, K. 527: Act I: Madamina, il catalogo è questo (No. 4, Aria: Leporello)
type: MusicRecording
duration: PT5M24S
duration ms: 324373
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Vito Priante
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604402
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T11:10:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77f954ab6536d88ddbc74d686536a87bff7020c243d560403427d390bccd80ae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604402
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f954ab6536d88ddbc74d686536a87bff7020c243d560403427d390bccd80ae. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604402.
  date published: 2026-07-02T03:30:09Z
audio: Don Giovanni, K. 527: Act I: Madamina, il catalogo è questo (No. 4, Aria: Leporello)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.295
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.063
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Protegga il giusto cielo (Adagio: Donna Anna, Don Ottavio, Donna Elvira)
type: MusicRecording
duration: PT2M8S
duration ms: 128240
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Myrtò Papatanasiu
by artist: Karina Gauvin
by artist: Kenneth Tarver
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604428
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T17:15:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c6165c2b69598938d5100ad2db3761ef39ac3b4ec479b15b0d1a7ef03b849bc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604428
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6165c2b69598938d5100ad2db3761ef39ac3b4ec479b15b0d1a7ef03b849bc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604428.
  date published: 2026-07-29T19:35:34Z
audio: Don Giovanni, K. 527: Act I: Protegga il giusto cielo (Adagio: Donna Anna, Don Ottavio, Donna Elvira)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 167.575
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.209
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.088
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.47
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: In questa forma dunque (Recitativo: Donna Elvira)
type: MusicRecording
duration: PT0M51S
duration ms: 51386
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Karina Gauvin
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604403
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T17:23:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa47ae9b3ba325d92b07b3527475a078aeb0aa9fef8f3e18489cd60b5fde163b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959159
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959159
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604403
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T17:48:40Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47ae9b3ba325d92b07b3527475a078aeb0aa9fef8f3e18489cd60b5fde163b1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604403.
  date published: 2026-07-22T17:48:40Z
audio: Don Giovanni, K. 527: Act I: In questa forma dunque (Recitativo: Donna Elvira)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 75.955
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.616
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.954
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.132
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.566
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Don Giovanni, K. 527: Act I: Riposate, vezzose ragazze (Allegro: Don Giovanni, Leporello, Masetto, Zerlina)
type: MusicRecording
duration: PT1M15S
duration ms: 75466
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604429
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T11:03:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc7498f5de6ffa082cf786feff45f44402ac8089eb6194ddf26fe11f67ab9003
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960099
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960099
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604429
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:30:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7498f5de6ffa082cf786feff45f44402ac8089eb6194ddf26fe11f67ab9003. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604429.
  date published: 2026-07-29T11:30:20Z
audio: Don Giovanni, K. 527: Act I: Riposate, vezzose ragazze (Allegro: Don Giovanni, Leporello, Masetto, Zerlina)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.503
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.577
  additional property: Energy
    type: PropertyValue
    value: 0.323
  additional property: Speechiness
    type: PropertyValue
    value: 0.116
  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.865
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.905
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Giovinette che fate all'amore (No. 5, Coro: Zerlina, Masetto, Coro di contadini)
type: MusicRecording
duration: PT1M18S
duration ms: 78706
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Guido Loconsolo
by artist: Christina Gansch
by artist: MusicAeterna Choir
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604404
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T18:31:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xef45d06942bf422ce617c62fe88eb1acb259aec2703a2730ed0f81346c8ebb2b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604404
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef45d06942bf422ce617c62fe88eb1acb259aec2703a2730ed0f81346c8ebb2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604404.
  date published: 2026-07-02T03:55:08Z
audio: Don Giovanni, K. 527: Act I: Giovinette che fate all'amore (No. 5, Coro: Zerlina, Masetto, Coro di contadini)
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  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.516
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.568
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.946
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.011
  additional property: Liveness
    type: PropertyValue
    value: 0.361
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.75
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.918
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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    value: Major

Don Giovanni, K. 527: Act I: Venite pur avanti, vezzose mascherette (Maestoso: Leporello, Don Giovanni, Donna Anna, Donna Elvira, Don Ottavio, Masetto, Zerlina)
type: MusicRecording
duration: PT3M50S
duration ms: 230186
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Myrtò Papatanasiu
by artist: Vito Priante
by artist: Karina Gauvin
by artist: Kenneth Tarver
by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604430
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T10:54:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a997726d12261aa92ae12c1211c3637a344be0b0560c3af7492a8d73b04e34d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960095
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960095
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604430
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:07:37Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a997726d12261aa92ae12c1211c3637a344be0b0560c3af7492a8d73b04e34d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604430.
  date published: 2026-07-29T11:07:37Z
audio: Don Giovanni, K. 527: Act I: Venite pur avanti, vezzose mascherette (Maestoso: Leporello, Don Giovanni, Donna Anna, Donna Elvira, Don Ottavio, Masetto, Zerlina)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.454
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.455
  additional property: Energy
    type: PropertyValue
    value: 0.181
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.925
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.234
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.537
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.28
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Manco male è partita (Recitativo: Don Giovanni, Leporello, Zerlina, Masetto)
type: MusicRecording
duration: PT2M33S
duration ms: 153293
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604405
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:44:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe90fde5acb60631c87fa7e6e42321278bbafc789d525e990a3a0a23936e50bda
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604405
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90fde5acb60631c87fa7e6e42321278bbafc789d525e990a3a0a23936e50bda. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604405.
  date published: 2026-07-06T06:56:49Z
audio: Don Giovanni, K. 527: Act I: Manco male è partita (Recitativo: Don Giovanni, Leporello, Zerlina, Masetto)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.981
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.577
  additional property: Energy
    type: PropertyValue
    value: 0.119
  additional property: Speechiness
    type: PropertyValue
    value: 0.534
  additional property: Acousticness
    type: PropertyValue
    value: 0.926
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.305
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.347
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.007
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Don Giovanni, K. 527: Act I: Ecco il birbo che t'ha offesa (Andante maestoso: Leporello, Don Giovanni, Donna Anna, Donna Elvira, Don Ottavio, Masetto, Zerlina)
type: MusicRecording
duration: PT1M15S
duration ms: 75040
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Myrtò Papatanasiu
by artist: Vito Priante
by artist: Karina Gauvin
by artist: Kenneth Tarver
by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604431
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T18:20:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x450ae46b0a1ec391059ada697597c1a73a22ca1ab8da213d266769490d9752a4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604431
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450ae46b0a1ec391059ada697597c1a73a22ca1ab8da213d266769490d9752a4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604431.
  date published: 2026-07-29T19:35:34Z
audio: Don Giovanni, K. 527: Act I: Ecco il birbo che t'ha offesa (Andante maestoso: Leporello, Don Giovanni, Donna Anna, Donna Elvira, Don Ottavio, Masetto, Zerlina)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.01
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.677
  additional property: Energy
    type: PropertyValue
    value: 0.187
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.967
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.434
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.572
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.803
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Ho capito, signor sì (No. 6, Aria: Masetto)
type: MusicRecording
duration: PT1M25S
duration ms: 85493
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Guido Loconsolo
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604406
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T21:21:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x737d3fee350cb817a578ed6714892a00d95976f4bd17b27321b5e26207c901b4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604406
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737d3fee350cb817a578ed6714892a00d95976f4bd17b27321b5e26207c901b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604406.
  date published: 2026-07-02T03:55:08Z
audio: Don Giovanni, K. 527: Act I: Ho capito, signor sì (No. 6, Aria: Masetto)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.793
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.518
  additional property: Energy
    type: PropertyValue
    value: 0.257
  additional property: Speechiness
    type: PropertyValue
    value: 0.122
  additional property: Acousticness
    type: PropertyValue
    value: 0.962
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.171
  additional property: Liveness
    type: PropertyValue
    value: 0.075
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.838
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.222
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Trema, trema, o scellerato! (Allegro: Don Giovanni, Leporello, Don Ottavio, Donna Anna, Donna Elvira)
type: MusicRecording
duration: PT2M0S
duration ms: 120160
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Myrtò Papatanasiu
by artist: Vito Priante
by artist: Karina Gauvin
by artist: Kenneth Tarver
by artist: Guido Loconsolo
by artist: Christina Gansch
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604432
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T21:39:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1972a6f2aa5f9a109de583f4c61f5f7640178f62ff86aab6706b229cfab0e730
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604432
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1972a6f2aa5f9a109de583f4c61f5f7640178f62ff86aab6706b229cfab0e730. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604432.
  date published: 2026-07-02T03:55:08Z
audio: Don Giovanni, K. 527: Act I: Trema, trema, o scellerato! (Allegro: Don Giovanni, Leporello, Don Ottavio, Donna Anna, Donna Elvira)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.438
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.47
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.067
  additional property: Acousticness
    type: PropertyValue
    value: 0.845
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.688
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.113
  additional property: Key Name
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    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Alfin siam liberati (Recitativo: Don Giovanni, Zerlina)
type: MusicRecording
duration: PT2M37S
duration ms: 157560
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Christina Gansch
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604407
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960108
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604407
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:09:35Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086b10cb898badbd7f038b063a945ce582b32b273827811452f7a567832c7c98. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604407.
  date published: 2026-07-29T13:09:35Z
audio: Don Giovanni, K. 527: Act I: Alfin siam liberati (Recitativo: Don Giovanni, Zerlina)
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  additional property: Acousticness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Don Giovanni, K. 527: Act II: Eh via buffone (No. 14, Duetto: Don Giovanni, Leporello)
type: MusicRecording
duration: PT0M58S
duration ms: 58040
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604434
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604434
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:21:01Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3ceaea256e25601afa15ce0abb4e6efb6bbc042618deb1a81e7831b673b01d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604434.
  date published: 2026-07-29T13:21:01Z
audio: Don Giovanni, K. 527: Act II: Eh via buffone (No. 14, Duetto: Don Giovanni, Leporello)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
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  additional property: Energy
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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    type: PropertyValue
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Don Giovanni, K. 527: Act I: Là ci darem la mano (No. 7, Duettino: Don Giovanni, Zerlina)
type: MusicRecording
duration: PT3M22S
duration ms: 202640
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Christina Gansch
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604408
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T23:48:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe463f64dbbf81d41944dc2a12f8a68598308e6db422c2ab05d6d1110c5573478
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604408
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe463f64dbbf81d41944dc2a12f8a68598308e6db422c2ab05d6d1110c5573478. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604408.
  date published: 2026-07-02T03:30:09Z
audio: Don Giovanni, K. 527: Act I: Là ci darem la mano (No. 7, Duettino: Don Giovanni, Zerlina)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.205
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.364
  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.899
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act II: Leporello. Signore. Vien qui (Recitativo: Don Giovanni, Leporello)
type: MusicRecording
duration: PT2M32S
duration ms: 152506
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604435
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T19:21:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66de608fd576675c2cd64d41d8f9e1290c49faf3538a1a3b55c3d655f88f064e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604435
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66de608fd576675c2cd64d41d8f9e1290c49faf3538a1a3b55c3d655f88f064e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604435.
  date published: 2026-07-08T03:20:19Z
audio: Don Giovanni, K. 527: Act II: Leporello. Signore. Vien qui (Recitativo: Don Giovanni, Leporello)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.784
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.549
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.169
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.898
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Fermati scellerato (Recitativo: Donna Elvira, Zerlina, Don Giovanni)
type: MusicRecording
duration: PT0M45S
duration ms: 45880
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Karina Gauvin
by artist: Mika Kares
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604409
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T06:25:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x96e3f68a70346794675c05b3c010b74e925585dcbc984d2640f3519ff0a59887
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604409
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e3f68a70346794675c05b3c010b74e925585dcbc984d2640f3519ff0a59887. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604409.
  date published: 2026-07-06T06:56:49Z
audio: Don Giovanni, K. 527: Act I: Fermati scellerato (Recitativo: Donna Elvira, Zerlina, Don Giovanni)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.908
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Mode Name
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Don Giovanni, K. 527: Act II: Ah taci, ingiusto core (No. 15, Terzetto: Donna Elvira, Leporello, Don Giovanni)
type: MusicRecording
duration: PT4M41S
duration ms: 281560
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
by artist: Karina Gauvin
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604436
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T14:45:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c8dc72f8eb0a16df9b1520b74db50b072f6f270917366d075b98b1ec25553de
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960121
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960121
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604436
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T15:22:21Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8dc72f8eb0a16df9b1520b74db50b072f6f270917366d075b98b1ec25553de. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604436.
  date published: 2026-07-29T15:22:21Z
audio: Don Giovanni, K. 527: Act II: Ah taci, ingiusto core (No. 15, Terzetto: Donna Elvira, Leporello, Don Giovanni)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.426
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.358
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Don Giovanni, K. 527: Act I: Ah fuggi il traditor (No. 8, Aria: Donna Elvira)
type: MusicRecording
duration: PT1M8S
duration ms: 68000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Karina Gauvin
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604410
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T08:28:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x68de0df8c39179af4974db81c6b872f744b720a125b56772bbe5bd4d4f7ec471
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959114
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604410
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68de0df8c39179af4974db81c6b872f744b720a125b56772bbe5bd4d4f7ec471. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604410.
  date published: 2026-07-22T08:41:42Z
audio: Don Giovanni, K. 527: Act I: Ah fuggi il traditor (No. 8, Aria: Donna Elvira)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.741
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.506
  additional property: Energy
    type: PropertyValue
    value: 0.131
  additional property: Speechiness
    type: PropertyValue
    value: 0.099
  additional property: Acousticness
    type: PropertyValue
    value: 0.936
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.583
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.553
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Don Giovanni, K. 527: Act II: Amico, che ti par? (Recitativo: Don Giovanni, Leporello)
type: MusicRecording
duration: PT0M37S
duration ms: 37613
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604437
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T13:49:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x02e3732f196dcd6b6fcfef4132d1f2d4d7e2fd1831969703e8fb9b64479e34c7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960264
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960264
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604437
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:36:16Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e3732f196dcd6b6fcfef4132d1f2d4d7e2fd1831969703e8fb9b64479e34c7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604437.
  date published: 2026-07-30T14:36:16Z
audio: Don Giovanni, K. 527: Act II: Amico, che ti par? (Recitativo: Don Giovanni, Leporello)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.454
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.665
  additional property: Energy
    type: PropertyValue
    value: 0.131
  additional property: Speechiness
    type: PropertyValue
    value: 0.533
  additional property: Acousticness
    type: PropertyValue
    value: 0.897
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.422
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.585
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.53
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Mi par ch'oggi il demonio si diverta... Ah ti ritrovo ancor (Recitativo: Don Giovanni, Don Ottavio, Donna Anna; Recitativo: Donna Elvira)
type: MusicRecording
duration: PT1M23S
duration ms: 83893
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Myrtò Papatanasiu
by artist: Karina Gauvin
by artist: Kenneth Tarver
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604411
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T10:19:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x11e90428c1724c678c14c8505431d7175100f21938d131affffca5ca98ca41c5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960095
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960095
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604411
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:07:37Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e90428c1724c678c14c8505431d7175100f21938d131affffca5ca98ca41c5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604411.
  date published: 2026-07-29T11:07:37Z
audio: Don Giovanni, K. 527: Act I: Mi par ch'oggi il demonio si diverta... Ah ti ritrovo ancor (Recitativo: Don Giovanni, Don Ottavio, Donna Anna; Recitativo: Donna Elvira)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.637
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.638
  additional property: Energy
    type: PropertyValue
    value: 0.057
  additional property: Speechiness
    type: PropertyValue
    value: 0.324
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.2
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.266
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act II: Eccomi a voi! (Recitativo: Donna Elvira, Don Giovanni, Leporello)
type: MusicRecording
duration: PT1M59S
duration ms: 119973
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Vito Priante
by artist: Karina Gauvin
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604438
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T07:45:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad4bc3c5705846959f8d465165ccf31c5f5d1815ae9d40edd5cf224265dd0b69
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960222
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960222
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604438
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T07:48:45Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4bc3c5705846959f8d465165ccf31c5f5d1815ae9d40edd5cf224265dd0b69. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604438.
  date published: 2026-07-30T07:48:45Z
audio: Don Giovanni, K. 527: Act II: Eccomi a voi! (Recitativo: Donna Elvira, Don Giovanni, Leporello)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.59
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.515
  additional property: Energy
    type: PropertyValue
    value: 0.036
  additional property: Speechiness
    type: PropertyValue
    value: 0.127
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.25
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.145
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.073
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Non ti fidar, o misera (No. 9, Quartetto: Donna Elvira, Donna Anna, Don Ottavio, Don Giovanni)
type: MusicRecording
duration: PT3M54S
duration ms: 234346
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Myrtò Papatanasiu
by artist: Karina Gauvin
by artist: Kenneth Tarver
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604412
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T15:54:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6a86ad0ba663ff495d7c6dd29324bc9e00c3dcf2923834a917effe3c3c468170
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959152
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959152
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604412
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T16:23:52Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a86ad0ba663ff495d7c6dd29324bc9e00c3dcf2923834a917effe3c3c468170. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604412.
  date published: 2026-07-22T16:23:52Z
audio: Don Giovanni, K. 527: Act I: Non ti fidar, o misera (No. 9, Quartetto: Donna Elvira, Donna Anna, Don Ottavio, Don Giovanni)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 144.258
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.427
  additional property: Energy
    type: PropertyValue
    value: 0.096
  additional property: Speechiness
    type: PropertyValue
    value: 0.084
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.192
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.18
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.035
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act II: Deh vieni alla finestra (No. 16, Canzonetta: Don Giovanni)
type: MusicRecording
duration: PT1M52S
duration ms: 112706
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604439
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T03:57:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd35819e50d861847a0e4cc4201e646c73fd771cbdf8d420daa1ceb39013b37e5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604439
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35819e50d861847a0e4cc4201e646c73fd771cbdf8d420daa1ceb39013b37e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604439.
  date published: 2026-07-02T03:30:09Z
audio: Don Giovanni, K. 527: Act II: Deh vieni alla finestra (No. 16, Canzonetta: Don Giovanni)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 150.061
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.349
  additional property: Energy
    type: PropertyValue
    value: 0.039
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.944
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.657
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.221
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.16
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Don Giovanni, K. 527: Act I: Don Ottavio, son morta! (No. 10, Recitativo accompagnato: Donna Anna, Don Ottavio)
type: MusicRecording
duration: PT3M9S
duration ms: 189653
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Myrtò Papatanasiu
by artist: Kenneth Tarver
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604414
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T10:57:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe76b9ac2a95122f2af6162a73205e4daad110f846d301f6242d335705797cbfc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960095
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960095
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604414
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:07:37Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76b9ac2a95122f2af6162a73205e4daad110f846d301f6242d335705797cbfc. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604414.
  date published: 2026-07-29T11:07:37Z
audio: Don Giovanni, K. 527: Act I: Don Ottavio, son morta! (No. 10, Recitativo accompagnato: Donna Anna, Don Ottavio)
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Don Giovanni, K. 527: Act II: Non ci stanchiamo (Recitativo: Masetto, Don Giovanni)
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duration: PT1M3S
duration ms: 63560
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
by artist: Guido Loconsolo
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604441
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604441
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374b79d2dc9075e1f8df225207e274c297b5aa3d2f0e50d93f4f115e22e62a49. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604441.
  date published: 2026-07-29T23:20:38Z
audio: Don Giovanni, K. 527: Act II: Non ci stanchiamo (Recitativo: Masetto, Don Giovanni)
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Don Giovanni, K. 527: Act I: Or sai chi l'onore (Aria: Donna Anna)
type: MusicRecording
duration: PT2M32S
duration ms: 152000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Myrtò Papatanasiu
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604415
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5415f0f939a91658244897eaa6b6f76c56304d2e8148be3b6afc11b771ae17. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604415.
  date published: 2026-07-06T06:56:49Z
audio: Don Giovanni, K. 527: Act I: Or sai chi l'onore (Aria: Donna Anna)
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Don Giovanni, K. 527: Act II: Metà di voi qua vadano (No. 17, Aria: Don Giovanni)
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duration: PT2M30S
duration ms: 150960
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Dimitris Tiliakos
in album: Mozart: Don Giovanni
  type: MusicAlbum
  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604442
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604442
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-07T14:18:56Z
audio: Don Giovanni, K. 527: Act II: Metà di voi qua vadano (No. 17, Aria: Don Giovanni)
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Don Giovanni, K. 527: Act I: Dalla sua pace (No. 10a, Aria: Don Ottavio)
type: MusicRecording
duration: PT4M9S
duration ms: 249946
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: musicAeterna
by artist: Kenneth Tarver
in album: Mozart: Don Giovanni
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  date published: 2016-11-04
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11604417
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604417
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b4001c9b7e02ea857d7c3e6c71b76afea65990e008755090ad811636756fd3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11604417.
  date published: 2026-07-22T15:38:35Z
audio: Don Giovanni, K. 527: Act I: Dalla sua pace (No. 10a, Aria: Don Ottavio)
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Mozart: Così fan tutte (Highlights)
type: MusicAlbum
date published: 2015-10-09
track: Così fan tutte ossia La scuola degli amanti, K. 588: Ouvertura
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    date published: 2015-10-09
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: USSM11405464
  additional property: CopyrightID
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    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405464
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207ee274e3c1652f529a740a6deb122b0ba74885c953def6a3ef49ea044b51b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405464.
    date published: 2026-07-08T03:20:19Z
  audio: Così fan tutte ossia La scuola degli amanti, K. 588: Ouvertura
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Danceability
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    additional property: Acousticness
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track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: La mia Dorabella capace non è (No. 1, Terzetto: Ferrando, Don Alfonso, Guglielmo)
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e107a17e6f021b29a378acd884bed198b6bae2b2d78f1d0ab777565656937. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405466.
    date published: 2026-07-31T15:20:15Z
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    additional property: Valence (Positivity)
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track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Una bella serenata (No. 3, Terzetto: Ferrando, Don Alfonso, Guglielmo)
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  audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Una bella serenata (No. 3, Terzetto: Ferrando, Don Alfonso, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah guarda, sorella (No. 4, Duetto: Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Soave sia il vento (No. 10, Terzettino: Fiordiligi, Dorabella, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Smanie implacabili che m'agitate (No. 11, Aria: Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: In uomini! In soldati (No. 12, Aria: Despina)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Alla bella Despinetta (No. 13, Sestetto: Fiordiligi, Dorabella, Despina, Ferrando, Don Alfonso, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Come scoglio immoto resta (No. 14, Aria: Fiordiligi)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non siate ritrosi (No. 15, Aria: Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Un'aura amorosa (No. 17, Aria: Ferrando)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Una donna a quindici anni (No. 19, Aria: Despina)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Prenderò quel brunettino (No. 20, Duetto: Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: La mano a me date (No. 22: Despina, Ferrando, Guglielmo, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Il core vi dono (No. 23, Duetto: Dorabella, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Per pietà, ben mio, perdona (No. 25, Rondò: Fiordiligi)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Fra gli amplessi in pochi istanti (No. 29, Duetto: Fiordiligi, Ferrando)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Tutti accusan le donne (No. 30: Don Alfonso, Ferrando, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Fate presto, o cari amici (No. 31, Finale: Despina, Coro, Don Alfonso)

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date published: 2026-07-30T14:36:16Z

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Una bella serenata (No. 3, Terzetto: Ferrando, Don Alfonso, Guglielmo)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah guarda, sorella (No. 4, Duetto: Fiordiligi, Dorabella)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah guarda, sorella (No. 4, Duetto: Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Soave sia il vento (No. 10, Terzettino: Fiordiligi, Dorabella, Don Alfonso)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Soave sia il vento (No. 10, Terzettino: Fiordiligi, Dorabella, Don Alfonso)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Smanie implacabili che m'agitate (No. 11, Aria: Dorabella)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Smanie implacabili che m'agitate (No. 11, Aria: Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: In uomini! In soldati (No. 12, Aria: Despina)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: In uomini! In soldati (No. 12, Aria: Despina)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Alla bella Despinetta (No. 13, Sestetto: Fiordiligi, Dorabella, Despina, Ferrando, Don Alfonso, Guglielmo)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T03:15:04Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Alla bella Despinetta (No. 13, Sestetto: Fiordiligi, Dorabella, Despina, Ferrando, Don Alfonso, Guglielmo)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Come scoglio immoto resta (No. 14, Aria: Fiordiligi)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Come scoglio immoto resta (No. 14, Aria: Fiordiligi)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non siate ritrosi (No. 15, Aria: Guglielmo)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non siate ritrosi (No. 15, Aria: Guglielmo)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Un'aura amorosa (No. 17, Aria: Ferrando)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Un'aura amorosa (No. 17, Aria: Ferrando)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Una donna a quindici anni (No. 19, Aria: Despina)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T16:07:24Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Una donna a quindici anni (No. 19, Aria: Despina)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Prenderò quel brunettino (No. 20, Duetto: Fiordiligi, Dorabella)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Prenderò quel brunettino (No. 20, Duetto: Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: La mano a me date (No. 22: Despina, Ferrando, Guglielmo, Don Alfonso)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:51:48Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: La mano a me date (No. 22: Despina, Ferrando, Guglielmo, Don Alfonso)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Il core vi dono (No. 23, Duetto: Dorabella, Guglielmo)
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  date published: 2026-07-08T03:20:19Z
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Per pietà, ben mio, perdona (No. 25, Rondò: Fiordiligi)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Fra gli amplessi in pochi istanti (No. 29, Duetto: Fiordiligi, Ferrando)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Fra gli amplessi in pochi istanti (No. 29, Duetto: Fiordiligi, Ferrando)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Tutti accusan le donne (No. 30: Don Alfonso, Ferrando, Guglielmo)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Tutti accusan le donne (No. 30: Don Alfonso, Ferrando, Guglielmo)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Fate presto, o cari amici (No. 31, Finale: Despina, Coro, Don Alfonso)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Fate presto, o cari amici (No. 31, Finale: Despina, Coro, Don Alfonso)
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Mozart: Così fan tutte
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track: Così fan tutte ossia La scuola degli amanti, K. 588: Ouvertura
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah non partite! (Recitativo: Ferrando, Guglielmo, Don Alfonso, Dorabella, Fiordiligi)
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
  audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah non partite! (Recitativo: Ferrando, Guglielmo, Don Alfonso, Dorabella, Fiordiligi)
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track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: La mia Dorabella capace non è (No. 1, Terzetto: Ferrando, Don Alfonso, Guglielmo)
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  audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: La mia Dorabella capace non è (No. 1, Terzetto: Ferrando, Don Alfonso, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non siate ritrosi (No. 15, Aria: Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Fuor la spada (Recitativo: Guglielmo, Don Alfonso, Ferrando)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: E voi ridete? (No. 16, Terzetto: Ferrando, Guglielmo, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: È la fede delle femmine (No. 2, Terzetto: Ferrando, Don Alfonso, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Si può sapere un poco (Recitativo: Don Alfonso, Guglielmo, Ferrando)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Scioccherie di poeti! (Recitativo: Ferrando, Guglielmo, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Un'aura amorosa (No. 17, Aria: Ferrando)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Una bella serenata (No. 3, Terzetto: Ferrando, Don Alfonso, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Oh la saria da ridere (Recitativo: Don Alfonso, Despina)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah guarda, sorella (No. 4, Duetto: Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah che tutta in un momento (No. 18, Finale: Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Mi par che stamattina (Recitativo: Fiordiligi, Dorabella, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Si mora sì, si mora (Ferrando, Don Alfonso, Guglielmo, Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Vorrei dir, e cor non ho (No. 5, Aria: Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Giacché a morir vicini (Don Alfonso, Fiordiligi, Dorabella, Despina, Ferrando, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Stelle! Per carità, signor Alfonso (Recitativo: Fiordiligi, Don Alfonso, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Eccovi il medico (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Sento oddio, che questo piede (No. 6, Quintetto: Fiordiligi, Dorabella, Ferrando, Guglielmo, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dove son! Che loco è questo! (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non piangere, idol mio (Recitativo: Guglielmo, Ferrando, Don Alfonso, Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dammi un bacio, o mio tesoro (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Al fato dàn legge (No. 7, Duettino: Ferrando, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Andate là, che siete (Recitativo: Despina, Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: La commedia è graziosa (Recitativo: Don Alfonso, Ferrando, Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Una donna a quindici anni (No. 19, Aria: Despina)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Bella vita militar! (No. 8, Coro)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Sorella, cosa dici? (Recitativo: Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non v'è più tempo, amici (Recitativo: Don Alfonso, Fiordiligi, Dorabella, Ferrando, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Prenderò quel brunettino (No. 20, Duetto: Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Di scrivermi ogni giorno (Recitativo: Fiordiligi, Dorabella, Ferrando, Guglielmo, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Bella vita militar! (No. 9, Coro)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Secondate, aurette amiche (No. 21, Duetto con Coro: Ferrando, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dove son? Son partiti (Recitativo: Dorabella, Don Alfonso, Fiordiligi)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: II tutto deponete (Recitativo: Don Alfonso, Fiordiligi, Dorabella, Despina, Ferrando, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Soave sia il vento (No. 10, Terzettino: Fiordiligi, Dorabella, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: La mano a me date (No. 22: Despina, Ferrando, Guglielmo, Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non son cattivo comico! - Nel mare solca (Recitativo: Don Alfonso)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che vita maledetta ... Madame, ecco la vostra colazione (Recitativo: Despina, Fiordiligi, Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah scostati (Recitativo: Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Smanie implacabili che m'agitate (No. 11, Aria: Dorabella)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Signora Dorabella, signora Fiordiligi (Recitativo: Despina, Dorabella, Fiordiligi)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: In uomini! In soldati (No. 12, Aria: Despina)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che silenzio! Che aspetto di tristezza (Recitativo: Don Alfonso, Despina)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Alla bella Despinetta (No. 13, Sestetto: Fiordiligi, Dorabella, Despina, Ferrando, Don Alfonso, Guglielmo)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che sussurro! Che strepito (Recitativo: Don Alfonso, Dorabella, Fiordiligi, Ferrando, Guglielmo, Despina)
track: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Come scoglio immoto resta (No. 14, Aria: Fiordiligi)

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date published: 2026-07-29T12:41:21Z

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: La mia Dorabella capace non è (No. 1, Terzetto: Ferrando, Don Alfonso, Guglielmo)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non siate ritrosi (No. 15, Aria: Guglielmo)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Fuor la spada (Recitativo: Guglielmo, Don Alfonso, Ferrando)
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  date published: 2026-07-29T19:35:34Z
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: E voi ridete? (No. 16, Terzetto: Ferrando, Guglielmo, Don Alfonso)
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1904f8cda537407b50cd8e616c2a7fb0968ae8c7914ac76b5df4163e99abf4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405497.
  date published: 2026-07-30T04:47:22Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: E voi ridete? (No. 16, Terzetto: Ferrando, Guglielmo, Don Alfonso)
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: È la fede delle femmine (No. 2, Terzetto: Ferrando, Don Alfonso, Guglielmo)
type: MusicRecording
duration: PT1M1S
duration ms: 61680
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 6
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405468
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T04:46:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b130b6a9dfc8689478d0e9fe32ccb266745b65e1b7a6100480b282d03f664be
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405468
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b130b6a9dfc8689478d0e9fe32ccb266745b65e1b7a6100480b282d03f664be. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405468.
  date published: 2026-07-06T06:56:49Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: È la fede delle femmine (No. 2, Terzetto: Ferrando, Don Alfonso, Guglielmo)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Si può sapere un poco (Recitativo: Don Alfonso, Guglielmo, Ferrando)
type: MusicRecording
duration: PT1M3S
duration ms: 63226
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405498
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T01:58:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x64d4b342da2c74e8f88299aa3df137ad6d92d1c06a3d04cf6ae7bebfc4cabfe0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405498
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d4b342da2c74e8f88299aa3df137ad6d92d1c06a3d04cf6ae7bebfc4cabfe0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405498.
  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Si può sapere un poco (Recitativo: Don Alfonso, Guglielmo, Ferrando)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.015
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.497
  additional property: Energy
    type: PropertyValue
    value: 0.199
  additional property: Speechiness
    type: PropertyValue
    value: 0.252
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.406
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.548
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.805
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Scioccherie di poeti! (Recitativo: Ferrando, Guglielmo, Don Alfonso)
type: MusicRecording
duration: PT1M19S
duration ms: 79360
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 5
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405469
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T20:46:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3b059a57f9c9a208f9b9eeff4404724edaedef2275cc671416877ed8c50cded3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405469
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b059a57f9c9a208f9b9eeff4404724edaedef2275cc671416877ed8c50cded3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405469.
  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Scioccherie di poeti! (Recitativo: Ferrando, Guglielmo, Don Alfonso)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.745
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.585
  additional property: Energy
    type: PropertyValue
    value: 0.201
  additional property: Speechiness
    type: PropertyValue
    value: 0.089
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.883
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.421
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.178
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Un'aura amorosa (No. 17, Aria: Ferrando)
type: MusicRecording
duration: PT5M3S
duration ms: 303386
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405499
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T20:51:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4c5565dfe726fdc5a7dcef1016c73cfd094c422f400c9ec54ce6652fed310ca
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405499
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c5565dfe726fdc5a7dcef1016c73cfd094c422f400c9ec54ce6652fed310ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405499.
  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Un'aura amorosa (No. 17, Aria: Ferrando)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.466
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.175
  additional property: Energy
    type: PropertyValue
    value: 0.028
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.122
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.495
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Una bella serenata (No. 3, Terzetto: Ferrando, Don Alfonso, Guglielmo)
type: MusicRecording
duration: PT2M15S
duration ms: 135653
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 6
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405470
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T19:07:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c969b4a044c6681a3a357a215f923531b73e209a876084e67ce792ed22a857f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405470
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c969b4a044c6681a3a357a215f923531b73e209a876084e67ce792ed22a857f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405470.
  date published: 2026-07-29T19:35:34Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Una bella serenata (No. 3, Terzetto: Ferrando, Don Alfonso, Guglielmo)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.914
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.448
  additional property: Energy
    type: PropertyValue
    value: 0.315
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.885
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.124
  additional property: Liveness
    type: PropertyValue
    value: 0.121
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.515
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.41
  additional property: Key Name
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    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Oh la saria da ridere (Recitativo: Don Alfonso, Despina)
type: MusicRecording
duration: PT2M21S
duration ms: 141426
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405500
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:41:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc7f9bc9f6cc269646ab7a4500636d9bfcd2ed1ccdd88bd0b3f9693cff4d21a9a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405500
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Oh la saria da ridere (Recitativo: Don Alfonso, Despina)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah guarda, sorella (No. 4, Duetto: Fiordiligi, Dorabella)
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by artist: Teodor Currentzis
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popularity: 5
genre: classical
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genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T16:43:08Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah guarda, sorella (No. 4, Duetto: Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah che tutta in un momento (No. 18, Finale: Fiordiligi, Dorabella)
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by artist: Teodor Currentzis
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popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:04:30Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah che tutta in un momento (No. 18, Finale: Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Mi par che stamattina (Recitativo: Fiordiligi, Dorabella, Don Alfonso)
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by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405472
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Mi par che stamattina (Recitativo: Fiordiligi, Dorabella, Don Alfonso)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Si mora sì, si mora (Ferrando, Don Alfonso, Guglielmo, Fiordiligi, Dorabella)
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f94745c56cdde1732955eca7cb6e76dab7c68dec1ae11709888407b6835dc1b. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405502.
  date published: 2026-07-30T12:51:24Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Si mora sì, si mora (Ferrando, Don Alfonso, Guglielmo, Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Vorrei dir, e cor non ho (No. 5, Aria: Don Alfonso)
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duration: PT0M44S
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405473
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec10bbf2144951439abb04081144fa1475a92beabc9074d03e166e59c76417ea. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405473.
  date published: 2026-07-30T00:21:01Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Vorrei dir, e cor non ho (No. 5, Aria: Don Alfonso)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Giacché a morir vicini (Don Alfonso, Fiordiligi, Dorabella, Despina, Ferrando, Guglielmo)
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405503
additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070d7c125bca917aff85e623ba8a83ff961cd4f3689a4f4421c85daa6ec10d75. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405503.
  date published: 2026-07-30T08:30:10Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Giacché a morir vicini (Don Alfonso, Fiordiligi, Dorabella, Despina, Ferrando, Guglielmo)
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Stelle! Per carità, signor Alfonso (Recitativo: Fiordiligi, Don Alfonso, Dorabella)
type: MusicRecording
duration: PT1M5S
duration ms: 65106
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405474
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405474
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835b150810de95d7f8fb1371d493f434e1ea12e1c1ce74cb600b7e990de4f40f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405474.
  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Stelle! Per carità, signor Alfonso (Recitativo: Fiordiligi, Don Alfonso, Dorabella)
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  additional property: Tempo (BPM)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Eccovi il medico (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
type: MusicRecording
duration: PT2M46S
duration ms: 166373
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405504
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960220
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405504
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T07:28:30Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc0b28147caa0888b1c7e7cb85b575e248fb3e92a60fe815163cae2ff8305e6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405504.
  date published: 2026-07-30T07:28:30Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Eccovi il medico (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.257
  additional property: Musical Key
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    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Sento oddio, che questo piede (No. 6, Quintetto: Fiordiligi, Dorabella, Ferrando, Guglielmo, Don Alfonso)
type: MusicRecording
duration: PT4M9S
duration ms: 249960
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405475
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T23:17:13+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960164
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960164
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405475
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T23:23:05Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cba15dc95008accd093460f27dcb6a468915e0f2fc9879cfe0ce2079262be4d. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405475.
  date published: 2026-07-29T23:23:05Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Sento oddio, che questo piede (No. 6, Quintetto: Fiordiligi, Dorabella, Ferrando, Guglielmo, Don Alfonso)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.528
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.372
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.222
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.794
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dove son! Che loco è questo! (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
type: MusicRecording
duration: PT3M57S
duration ms: 237400
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405505
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T15:45:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x568402407a2d8dbccc6b892216a65e05f1bde3a21ff72b7b061d958ff596bf13
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960276
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960276
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405505
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T16:01:17Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568402407a2d8dbccc6b892216a65e05f1bde3a21ff72b7b061d958ff596bf13. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405505.
  date published: 2026-07-30T16:01:17Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dove son! Che loco è questo! (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.834
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.33
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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    type: PropertyValue
    value: 0.064
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non piangere, idol mio (Recitativo: Guglielmo, Ferrando, Don Alfonso, Fiordiligi, Dorabella)
type: MusicRecording
duration: PT0M55S
duration ms: 55293
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405476
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T00:37:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x709d8af5110c75f5777f2471cda8859a9c16c7a8858d11cdddb797d70f4fd7ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960181
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960181
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405476
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T00:53:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709d8af5110c75f5777f2471cda8859a9c16c7a8858d11cdddb797d70f4fd7ad. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405476.
  date published: 2026-07-30T00:53:20Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non piangere, idol mio (Recitativo: Guglielmo, Ferrando, Don Alfonso, Fiordiligi, Dorabella)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.069
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.42
  additional property: Energy
    type: PropertyValue
    value: 0.042
  additional property: Speechiness
    type: PropertyValue
    value: 0.115
  additional property: Acousticness
    type: PropertyValue
    value: 0.971
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.31
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.143
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.899
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dammi un bacio, o mio tesoro (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
type: MusicRecording
duration: PT3M4S
duration ms: 184040
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405506
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T18:45:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3fad8acfb2562d6654cca99939a2f43a76a487818139636ca4859fdcd1421be9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405506
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fad8acfb2562d6654cca99939a2f43a76a487818139636ca4859fdcd1421be9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405506.
  date published: 2026-07-29T19:35:34Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dammi un bacio, o mio tesoro (Don Alfonso, Ferrando, Guglielmo, Despina, Fiordiligi, Dorabella)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.943
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.351
  additional property: Energy
    type: PropertyValue
    value: 0.381
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.194
  additional property: Liveness
    type: PropertyValue
    value: 0.161
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.48
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.775
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Al fato dàn legge (No. 7, Duettino: Ferrando, Guglielmo)
type: MusicRecording
duration: PT1M24S
duration ms: 84720
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T03:35:13Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Al fato dàn legge (No. 7, Duettino: Ferrando, Guglielmo)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Andate là, che siete (Recitativo: Despina, Fiordiligi, Dorabella)
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by artist: Teodor Currentzis
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genre: classical
genre: classical-era
genre: classical-piano
genre: opera
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Andate là, che siete (Recitativo: Despina, Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: La commedia è graziosa (Recitativo: Don Alfonso, Ferrando, Fiordiligi, Dorabella)
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genre: classical
genre: classical-era
genre: classical-piano
genre: opera
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: La commedia è graziosa (Recitativo: Don Alfonso, Ferrando, Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Una donna a quindici anni (No. 19, Aria: Despina)
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by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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  date published: 2014-11-14
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405509
additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T22:27:30Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Una donna a quindici anni (No. 19, Aria: Despina)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Bella vita militar! (No. 8, Coro)
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405479
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T23:23:05Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Bella vita militar! (No. 8, Coro)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Sorella, cosa dici? (Recitativo: Fiordiligi, Dorabella)
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popularity: 1
genre: classical
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genre: classical-piano
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genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:06:57Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Sorella, cosa dici? (Recitativo: Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non v'è più tempo, amici (Recitativo: Don Alfonso, Fiordiligi, Dorabella, Ferrando, Guglielmo)
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genre: chamber-music
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd77c9a622fcd9a472ee721e62cd820f508dec8135c7cb419646c7f8fe04589. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405480.
  date published: 2026-07-30T09:37:10Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non v'è più tempo, amici (Recitativo: Don Alfonso, Fiordiligi, Dorabella, Ferrando, Guglielmo)
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.396
  additional property: Energy
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    value: 0.091
  additional property: Speechiness
    type: PropertyValue
    value: 0.298
  additional property: Acousticness
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    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.122
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.343
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.036
  additional property: Key Name
    type: PropertyValue
    value: Bb
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    type: PropertyValue
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Prenderò quel brunettino (No. 20, Duetto: Fiordiligi, Dorabella)
type: MusicRecording
duration: PT3M1S
duration ms: 181893
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405511
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:12:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x950105d630332fc3f895e03d22a021a0ddf6a44f5a55877df8cb0f6c4ce25cb6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405511
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950105d630332fc3f895e03d22a021a0ddf6a44f5a55877df8cb0f6c4ce25cb6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405511.
  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Prenderò quel brunettino (No. 20, Duetto: Fiordiligi, Dorabella)
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 106.646
  additional property: Musical Key
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.298
  additional property: Energy
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    value: 0.048
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.023
  additional property: Liveness
    type: PropertyValue
    value: 0.231
  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.311
  additional property: Key Name
    type: PropertyValue
    value: Bb
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    type: PropertyValue
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Di scrivermi ogni giorno (Recitativo: Fiordiligi, Dorabella, Ferrando, Guglielmo, Don Alfonso)
type: MusicRecording
duration: PT2M23S
duration ms: 143866
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 5
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405481
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:25:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65c9df250279e75f862277b738d79046eefeacc495026fe0be7d8d16ee6ac9d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957026
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957026
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405481
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T11:02:43Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c9df250279e75f862277b738d79046eefeacc495026fe0be7d8d16ee6ac9d5. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405481.
  date published: 2026-07-07T11:02:43Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Di scrivermi ogni giorno (Recitativo: Fiordiligi, Dorabella, Ferrando, Guglielmo, Don Alfonso)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.294
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.158
  additional property: Energy
    type: PropertyValue
    value: 0.022
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.799
  additional property: Liveness
    type: PropertyValue
    value: 0.178
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.063
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.18
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Bella vita militar! (No. 9, Coro)
type: MusicRecording
duration: PT0M45S
duration ms: 45253
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405482
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:22:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91553ad6d582095b6a47bc294a3a8e0c72af7e5a83451c6d7651cc9a57c2cae9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405482
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91553ad6d582095b6a47bc294a3a8e0c72af7e5a83451c6d7651cc9a57c2cae9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405482.
  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Bella vita militar! (No. 9, Coro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 147.357
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.505
  additional property: Energy
    type: PropertyValue
    value: 0.166
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.909
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.958
  additional property: Liveness
    type: PropertyValue
    value: 0.162
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.69
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.791
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Secondate, aurette amiche (No. 21, Duetto con Coro: Ferrando, Guglielmo)
type: MusicRecording
duration: PT3M29S
duration ms: 209253
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 2
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405513
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T03:04:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf64eee123b6506989bb1411797339fd571d8a6f1d9f40e69034b2c76abdf45c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960344
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960344
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405513
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T04:14:58Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf64eee123b6506989bb1411797339fd571d8a6f1d9f40e69034b2c76abdf45c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405513.
  date published: 2026-07-31T04:14:58Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: Secondate, aurette amiche (No. 21, Duetto con Coro: Ferrando, Guglielmo)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.781
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.173
  additional property: Energy
    type: PropertyValue
    value: 0.013
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.823
  additional property: Liveness
    type: PropertyValue
    value: 0.134
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.255
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dove son? Son partiti (Recitativo: Dorabella, Don Alfonso, Fiordiligi)
type: MusicRecording
duration: PT0M56S
duration ms: 56626
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405483
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T04:53:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c3c58657812eb9cb775086b0259f338892e81a44040f79713056530f4b494e7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960209
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960209
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405483
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T05:15:54Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c58657812eb9cb775086b0259f338892e81a44040f79713056530f4b494e7. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405483.
  date published: 2026-07-30T05:15:54Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Dove son? Son partiti (Recitativo: Dorabella, Don Alfonso, Fiordiligi)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.018
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.373
  additional property: Energy
    type: PropertyValue
    value: 0.065
  additional property: Speechiness
    type: PropertyValue
    value: 0.185
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.296
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.094
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.463
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: II tutto deponete (Recitativo: Don Alfonso, Fiordiligi, Dorabella, Despina, Ferrando, Guglielmo)
type: MusicRecording
duration: PT0M46S
duration ms: 46760
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
  type: MusicAlbum
  date published: 2014-11-14
popularity: 1
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405514
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T08:00:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x30d57adc2e0587a862fecd2749b7681a12a2532c2fb41c8a917519033d19a398
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405514
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T08:26:41Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: II tutto deponete (Recitativo: Don Alfonso, Fiordiligi, Dorabella, Despina, Ferrando, Guglielmo)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Soave sia il vento (No. 10, Terzettino: Fiordiligi, Dorabella, Don Alfonso)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Soave sia il vento (No. 10, Terzettino: Fiordiligi, Dorabella, Don Alfonso)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: La mano a me date (No. 22: Despina, Ferrando, Guglielmo, Don Alfonso)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:51:48Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Secondo: La mano a me date (No. 22: Despina, Ferrando, Guglielmo, Don Alfonso)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non son cattivo comico! - Nel mare solca (Recitativo: Don Alfonso)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Non son cattivo comico! - Nel mare solca (Recitativo: Don Alfonso)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che vita maledetta ... Madame, ecco la vostra colazione (Recitativo: Despina, Fiordiligi, Dorabella)
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T07:51:46Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che vita maledetta ... Madame, ecco la vostra colazione (Recitativo: Despina, Fiordiligi, Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah scostati (Recitativo: Dorabella)
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genre: classical
genre: classical-era
genre: classical-piano
genre: opera
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T06:39:12Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Ah scostati (Recitativo: Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Smanie implacabili che m'agitate (No. 11, Aria: Dorabella)
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Smanie implacabili che m'agitate (No. 11, Aria: Dorabella)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Signora Dorabella, signora Fiordiligi (Recitativo: Despina, Dorabella, Fiordiligi)
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:30:10Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Signora Dorabella, signora Fiordiligi (Recitativo: Despina, Dorabella, Fiordiligi)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: In uomini! In soldati (No. 12, Aria: Despina)
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duration: PT2M34S
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
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popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T04:47:22Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: In uomini! In soldati (No. 12, Aria: Despina)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che silenzio! Che aspetto di tristezza (Recitativo: Don Alfonso, Despina)
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
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popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che silenzio! Che aspetto di tristezza (Recitativo: Don Alfonso, Despina)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Alla bella Despinetta (No. 13, Sestetto: Fiordiligi, Dorabella, Despina, Ferrando, Don Alfonso, Guglielmo)
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by artist: Teodor Currentzis
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genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405492
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Alla bella Despinetta (No. 13, Sestetto: Fiordiligi, Dorabella, Despina, Ferrando, Don Alfonso, Guglielmo)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che sussurro! Che strepito (Recitativo: Don Alfonso, Dorabella, Fiordiligi, Ferrando, Guglielmo, Despina)
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explicit: false
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by artist: Teodor Currentzis
in album: Mozart: Così fan tutte
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  date published: 2014-11-14
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11405493
additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e23fab2ad61d9970c4f9042431af47bd21a9d2e0bec8a12cfa682d004271cb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405493.
  date published: 2026-07-30T14:36:16Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Che sussurro! Che strepito (Recitativo: Don Alfonso, Dorabella, Fiordiligi, Ferrando, Guglielmo, Despina)
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Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Come scoglio immoto resta (No. 14, Aria: Fiordiligi)
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by artist: Teodor Currentzis
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popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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isrc code: USSM11405494
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99667088545b216afb6790f9a22a3a04ca0ae81a3d94025b08413823ddca912. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11405494.
  date published: 2026-07-29T21:09:47Z
audio: Così fan tutte ossia La scuola degli amanti, K. 588: Atto Primo: Come scoglio immoto resta (No. 14, Aria: Fiordiligi)
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Mozart: Le nozze di Figaro (Highlights)
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date published: 2014-10-17
track: Le nozze di Figaro, K. 492: Sinfonia
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    date published: 2014-10-17
  genre: classical
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  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303796
  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f5c6d44c6d642aba17ba03bab4e0e29c424b3c2fc1719057fc50f61638029f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303796.
    date published: 2026-06-13T13:32:09Z
  audio: Le nozze di Figaro, K. 492: Sinfonia
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    additional property: Tempo (BPM)
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track: Le nozze di Figaro, K. 492: Atto Primo: Cinque... dieci... venti... (No. 1, Duettino: Susanna, Figaro)
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  by artist: Wolfgang Amadeus Mozart
  by artist: Teodor Currentzis
  by artist: Christian Van Horn
  by artist: Fanie Antonelou
  by artist: musicAeterna
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    type: MusicAlbum
    date published: 2014-10-17
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: USSM11303798
  additional property: CopyrightID
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303798
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2195b40683ef73f93df39c04da789c5ff72d0d346d1c7b1385d78f205adebca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303798.
    date published: 2026-07-08T03:20:19Z
  audio: Le nozze di Figaro, K. 492: Atto Primo: Cinque... dieci... venti... (No. 1, Duettino: Susanna, Figaro)
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track: Le nozze di Figaro, K. 492: Atto Primo: La vendetta, oh la vendetta (No. 4, Aria: Bartolo)
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  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Teodor Currentzis
  by artist: Nikolai Loskutkin
  by artist: musicAeterna
  by artist: Mary-Ellen Nesi
  in album: Mozart: Le nozze di Figaro (Highlights)
    type: MusicAlbum
    date published: 2014-10-17
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
  isrc code: USSM11303805
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Le nozze di Figaro, K. 492: Atto Primo: La vendetta, oh la vendetta (No. 4, Aria: Bartolo)
track: Le nozze di Figaro, K. 492: Atto Primo: Non so più cosa son, cosa faccio (No. 6, Aria: Cherubino)
track: Le nozze di Figaro, K. 492: Atto Primo: Non più andrai farfallone amoroso (No. 10, Aria: Figaro)
track: Le nozze di Figaro, K. 492: Atto Secondo: Porgi amor qualche ristoro (No. 11, Cavatina: La Contessa)
track: Le nozze di Figaro, K. 492: Atto Secondo: Voi che sapete che cosa è amor (No. 12, Arietta: Cherubino)
track: Le nozze di Figaro, K. 492: Atto Secondo: Venite, inginocchiatevi (No. 13, Aria: Susanna)
track: Le nozze di Figaro, K. 492: Atto Terzo: Hai già vinta la causa! (No. 18, Recitativo: Il Conte)
track: Le nozze di Figaro, K. 492: Atto Terzo: Vedrò mentre io sospiro (No. 18, Aria: Il Conte)
track: Le nozze di Figaro, K. 492: Atto Terzo: Dove sono i bei momenti (No. 20, Aria: La Contessa)
track: Le nozze di Figaro, K. 492: Atto Terzo: Sull'aria... Che soave zeffiretto (No. 21, Duettino: Susanna, La Contessa)
track: Le nozze di Figaro, K. 492: Atto Quarto: L'ho perduta ... me meschina (No. 24, Cavatina: Barbarina)
track: Le nozze di Figaro, K. 492: Atto Quarto: Deh vieni, non tardar (No. 28, Aria: Susanna)
track: Le nozze di Figaro, K. 492: Atto Quarto: Contessa perdono (Il Conte, La Contessa, Susanna, Barbarina, Cherubino, Marcellina, Basilio, Antonio, Figaro)

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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x4fb0411b10beb4dab068e33e28972b2eabb71877cc6eb3991fad87ee396f4853

OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/960463

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303805

OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb0411b10beb4dab068e33e28972b2eabb71877cc6eb3991fad87ee396f4853. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303805.
date published: 2026-07-31T20:42:35Z

Le nozze di Figaro, K. 492: Atto Primo: La vendetta, oh la vendetta (No. 4, Aria: Bartolo)
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Le nozze di Figaro, K. 492: Atto Primo: Non so più cosa son, cosa faccio (No. 6, Aria: Cherubino)
type: MusicRecording
duration: PT2M45S
duration ms: 165413
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Mary-Ellen Nesi
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro (Highlights)
  type: MusicAlbum
  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303809
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303809
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0db5caede26b97385dc061f876a3fbdf419e8be2d4a7900359de208f164f42. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303809.
  date published: 2026-07-08T03:20:19Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Non so più cosa son, cosa faccio (No. 6, Aria: Cherubino)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Le nozze di Figaro, K. 492: Atto Primo: Non più andrai farfallone amoroso (No. 10, Aria: Figaro)
type: MusicRecording
duration: PT4M1S
duration ms: 241666
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Christian Van Horn
by artist: Mary-Ellen Nesi
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro (Highlights)
  type: MusicAlbum
  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303818
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T04:33:25+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x2f84b100948f1d9b567c6ed1aa0ca183d1a08115a56be443fe84a050b80e2a33
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303818
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f84b100948f1d9b567c6ed1aa0ca183d1a08115a56be443fe84a050b80e2a33. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303818.
  date published: 2026-07-08T03:20:19Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Non più andrai farfallone amoroso (No. 10, Aria: Figaro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.969
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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    value: -16.182
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Le nozze di Figaro, K. 492: Atto Secondo: Porgi amor qualche ristoro (No. 11, Cavatina: La Contessa)
type: MusicRecording
duration: PT3M24S
duration ms: 204120
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Simone Kermes
by artist: musicAeterna
by artist: Mary-Ellen Nesi
in album: Mozart: Le nozze di Figaro (Highlights)
  type: MusicAlbum
  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303820
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-06T04:49:07+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303820
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88cfa97897aec788d27f3cd63c5f6037680057508efb368f10cdea1d869e248. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303820.
  date published: 2026-07-08T03:20:19Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Porgi amor qualche ristoro (No. 11, Cavatina: La Contessa)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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Le nozze di Figaro, K. 492: Atto Secondo: Voi che sapete che cosa è amor (No. 12, Arietta: Cherubino)
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duration: PT2M59S
duration ms: 179586
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Mary-Ellen Nesi
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro (Highlights)
  type: MusicAlbum
  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fccc15e91d53da6fefc97122f507c6cc9b093f5d570cb6ae43cea867f1277dd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303823.
  date published: 2026-07-31T02:19:15Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Voi che sapete che cosa è amor (No. 12, Arietta: Cherubino)
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Le nozze di Figaro, K. 492: Atto Secondo: Venite, inginocchiatevi (No. 13, Aria: Susanna)
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duration: PT2M34S
duration ms: 154133
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Fanie Antonelou
by artist: musicAeterna
by artist: Mary-Ellen Nesi
in album: Mozart: Le nozze di Figaro (Highlights)
  type: MusicAlbum
  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303825
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8145ce786ee471be88acf5cd035f6a29f5d82732c405ddd2622829715245246. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303825.
  date published: 2026-07-31T21:25:57Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Venite, inginocchiatevi (No. 13, Aria: Susanna)
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Le nozze di Figaro, K. 492: Atto Terzo: Hai già vinta la causa! (No. 18, Recitativo: Il Conte)
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duration: PT1M17S
duration ms: 77800
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro (Highlights)
  type: MusicAlbum
  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303845
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5707ecab3c145fc43c9714d3be52224bcb74d817a451a770bba267dd006556. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303845.
  date published: 2026-07-31T15:20:15Z
audio: Le nozze di Figaro, K. 492: Atto Terzo: Hai già vinta la causa! (No. 18, Recitativo: Il Conte)
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Le nozze di Figaro, K. 492: Atto Terzo: Vedrò mentre io sospiro (No. 18, Aria: Il Conte)
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duration: PT3M17S
duration ms: 197253
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro (Highlights)
  type: MusicAlbum
  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303846
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303846
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926f436142437e6a03cd682b8e330048056afe4060c31e8172e9e64afed756a8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303846.
  date published: 2026-07-31T18:48:12Z
audio: Le nozze di Figaro, K. 492: Atto Terzo: Vedrò mentre io sospiro (No. 18, Aria: Il Conte)
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Le nozze di Figaro, K. 492: Atto Terzo: Dove sono i bei momenti (No. 20, Aria: La Contessa)
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duration: PT4M44S
duration ms: 284213
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Simone Kermes
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro (Highlights)
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  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303852
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303852
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b788acb3b3284e39b6a97854ab54740619e0c61a822da91df29177bee45bd8. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303852.
  date published: 2026-07-30T20:11:13Z
audio: Le nozze di Figaro, K. 492: Atto Terzo: Dove sono i bei momenti (No. 20, Aria: La Contessa)
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  additional property: Musical Key
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Le nozze di Figaro, K. 492: Atto Terzo: Sull'aria... Che soave zeffiretto (No. 21, Duettino: Susanna, La Contessa)
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duration: PT3M4S
duration ms: 184880
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by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Simone Kermes
by artist: Fanie Antonelou
by artist: musicAeterna
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  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303855
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303855
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2b5de1c7868416edbf6f462bc5baebe8751acaef80a146b59073450a423520. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303855.
  date published: 2026-07-31T00:26:26Z
audio: Le nozze di Figaro, K. 492: Atto Terzo: Sull'aria... Che soave zeffiretto (No. 21, Duettino: Susanna, La Contessa)
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  additional property: Musical Key
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  additional property: Danceability
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Le nozze di Figaro, K. 492: Atto Quarto: L'ho perduta ... me meschina (No. 24, Cavatina: Barbarina)
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duration ms: 136026
explicit: false
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by artist: Teodor Currentzis
by artist: Natalya Kirillova
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro (Highlights)
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  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-30T01:10:20Z
audio: Le nozze di Figaro, K. 492: Atto Quarto: L'ho perduta ... me meschina (No. 24, Cavatina: Barbarina)
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Le nozze di Figaro, K. 492: Atto Quarto: Deh vieni, non tardar (No. 28, Aria: Susanna)
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by artist: Teodor Currentzis
by artist: Fanie Antonelou
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro (Highlights)
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  date published: 2014-10-17
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Le nozze di Figaro, K. 492: Atto Quarto: Deh vieni, non tardar (No. 28, Aria: Susanna)
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Le nozze di Figaro, K. 492: Atto Quarto: Contessa perdono (Il Conte, La Contessa, Susanna, Barbarina, Cherubino, Marcellina, Basilio, Antonio, Figaro)
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by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: Christian Van Horn
by artist: Fanie Antonelou
by artist: Mary-Ellen Nesi
by artist: Maria Forsstrom
by artist: Krystian Adam
by artist: Garry Agadzhanian
by artist: Natalya Kirillova
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T22:48:59Z
audio: Le nozze di Figaro, K. 492: Atto Quarto: Contessa perdono (Il Conte, La Contessa, Susanna, Barbarina, Cherubino, Marcellina, Basilio, Antonio, Figaro)
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type: MusicAlbum
date published: 2014-02-14
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
  audio: Le nozze di Figaro, K. 492: Sinfonia
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track: Le nozze di Figaro, K. 492: Atto Secondo: Che novità (Recitativo: Il Conte, La Contessa)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T07:28:30Z
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track: Le nozze di Figaro, K. 492: Atto Primo: Cinque... dieci... venti... (No. 1, Duettino: Susanna, Figaro)
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  subject of: OpenTimestamps Proof of Existence
  audio: Le nozze di Figaro, K. 492: Atto Primo: Cinque... dieci... venti... (No. 1, Duettino: Susanna, Figaro)
track: Le nozze di Figaro, K. 492: Atto Secondo: Susanna or via sortite (No. 14, Terzetto: Susanna, La Contessa, Il Conte)
track: Le nozze di Figaro, K. 492: Atto Primo: Cosa stai misurando (Recitativo: Susanna, Figaro)
track: Le nozze di Figaro, K. 492: Atto Secondo: Dunque voi non aprite? (Recitativo: Il Conte, La Contessa)
track: Le nozze di Figaro, K. 492: Atto Primo: Se a caso madama la notte ti chiama (No. 2, Duettino: Susanna, Figaro)
track: Le nozze di Figaro, K. 492: Atto Secondo: Aprite presto aprite (No. 15, Duettino: Susanna, Cherubino)
track: Le nozze di Figaro, K. 492: Atto Primo: Or bene; ascolta, e taci! (Recitativo: Susanna, Figaro)
track: Le nozze di Figaro, K. 492: Atto Primo: Bravo signor padrone! (Recitativo: Figaro)
track: Le nozze di Figaro, K. 492: Atto Secondo: Tutto è come il lasciai (Recitativo: Il Conte, La Contessa)
track: Le nozze di Figaro, K. 492: Atto Primo: Se vuol ballare signor Contino (No. 3, Cavatina: Figaro)
track: Le nozze di Figaro, K. 492: Atto Secondo: Esci omai garzon malnato (No. 16, Finale: Il Conte, La Contessa)
track: Le nozze di Figaro, K. 492: Atto Primo: Ed aspettaste il giorno fissato a le sue nozze (Recitativo: Bartolo, Marcellina)
track: Le nozze di Figaro, K. 492: Atto Secondo: Signore, cos'è quel stupore? (Susanna, Il Conte, La Contessa)
track: Le nozze di Figaro, K. 492: Atto Primo: La vendetta, oh la vendetta (No. 4, Aria: Bartolo)
track: Le nozze di Figaro, K. 492: Atto Secondo: Susanna, son morta: il fiato mi manca (La Contessa, Susanna, Il Conte)
track: Le nozze di Figaro, K. 492: Atto Primo: Tutto ancor non ho perso (Recitativo: Marcellina, Susanna)
track: Le nozze di Figaro, K. 492: Atto Secondo: Signori, di fuori son gia i suonatori (Figaro, Il Conte, La Contessa, Susanna)
track: Le nozze di Figaro, K. 492: Atto Primo: Via, resti servita, madama brillante (No. 5, Duettino: Susanna, Marcellina)
track: Le nozze di Figaro, K. 492: Atto Secondo: Conoscete, signor Figaro (Il Conte, Figaro, La Contessa, Susanna)
track: Le nozze di Figaro, K. 492: Atto Primo: Va' là, vecchia pedante (Recitativo: Susanna, Cherubino)
track: Le nozze di Figaro, K. 492: Atto Secondo: Ah signor... signor... Cosa è stato ... Vostre dunque saran... (Antonio, Il Conte, La Contessa, Susanna, Figaro)
track: Le nozze di Figaro, K. 492: Atto Primo: Non so più cosa son, cosa faccio (No. 6, Aria: Cherubino)
track: Le nozze di Figaro, K. 492: Atto Secondo: Voi signor, che giusto siete ... Son confusa, son stordita (Marcellina, Basilio, Bartolo, Il Conte, La Contessa, Figaro, Susanna)
track: Le nozze di Figaro, K. 492: Atto Primo: Ah son perduto! (Recitativo: Cherubino, Susanna, Il Conte, Basilio)
track: Le nozze di Figaro, K. 492: Atto Terzo: Che imbarazzo è mai questo! (Recitativo: Il Conte)

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date published: 2026-07-02T03:55:08Z

Le nozze di Figaro, K. 492: Atto Primo: Cinque... dieci... venti... (No. 1, Duettino: Susanna, Figaro)
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additional property: Valence (Positivity)
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Le nozze di Figaro, K. 492: Atto Secondo: Susanna or via sortite (No. 14, Terzetto: Susanna, La Contessa, Il Conte)
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duration: PT3M25S
duration ms: 205106
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: Fanie Antonelou
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91de3e207b13279b43147e32cf85c2f81f7bd6fe198545c8aeae7ae549e6f8b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303828.
  date published: 2026-07-08T03:20:19Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Susanna or via sortite (No. 14, Terzetto: Susanna, La Contessa, Il Conte)
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  additional property: Valence (Positivity)
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Le nozze di Figaro, K. 492: Atto Primo: Cosa stai misurando (Recitativo: Susanna, Figaro)
type: MusicRecording
duration: PT0M44S
duration ms: 44520
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Christian Van Horn
by artist: Fanie Antonelou
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 6
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303799
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe7282b0bfe645929efb7a673dd8835f49c5aeda516b7f7ab2190f1858f46a4. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303799.
  date published: 2026-07-29T15:38:18Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Cosa stai misurando (Recitativo: Susanna, Figaro)
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Le nozze di Figaro, K. 492: Atto Secondo: Dunque voi non aprite? (Recitativo: Il Conte, La Contessa)
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duration: PT0M53S
duration ms: 53160
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303829
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303829
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b6ce6d9c4ce9b94e55d283909d496f8e5c3f3239a2a26412193856d5788f4f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303829.
  date published: 2026-07-30T07:28:30Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Dunque voi non aprite? (Recitativo: Il Conte, La Contessa)
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Le nozze di Figaro, K. 492: Atto Primo: Se a caso madama la notte ti chiama (No. 2, Duettino: Susanna, Figaro)
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duration: PT2M41S
duration ms: 161933
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Christian Van Horn
by artist: Fanie Antonelou
by artist: musicAeterna
by artist: Mary-Ellen Nesi
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 7
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303800
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303800
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T16:43:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7263a02482dd152f5f6176d66db909cdc926b2eed2f79dae90aacf280a0789. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303800.
  date published: 2026-07-22T16:43:41Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Se a caso madama la notte ti chiama (No. 2, Duettino: Susanna, Figaro)
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    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.367
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    type: PropertyValue
    value: -23.019
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Le nozze di Figaro, K. 492: Atto Secondo: Aprite presto aprite (No. 15, Duettino: Susanna, Cherubino)
type: MusicRecording
duration: PT0M54S
duration ms: 54933
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Fanie Antonelou
by artist: Mary-Ellen Nesi
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303830
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T22:40:29+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960160
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303830
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T22:48:59Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b2708078d42d939e2ed8ce0774322f3001dbc8def3aa54d6a9a3c120848494. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303830.
  date published: 2026-07-29T22:48:59Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Aprite presto aprite (No. 15, Duettino: Susanna, Cherubino)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.363
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Le nozze di Figaro, K. 492: Atto Primo: Or bene; ascolta, e taci! (Recitativo: Susanna, Figaro)
type: MusicRecording
duration: PT1M50S
duration ms: 110373
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Christian Van Horn
by artist: Mary-Ellen Nesi
by artist: Fanie Antonelou
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 6
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303801
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T13:02:00+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960108
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303801
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:09:35Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1138720a3073c6060f0884d3c942dda1d90bc1c9485547c007f0124d5a8608. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303801.
  date published: 2026-07-29T13:09:35Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Or bene; ascolta, e taci! (Recitativo: Susanna, Figaro)
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  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.209
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    value: 5
  additional property: Danceability
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    value: 0.564
  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.436
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.364
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.281
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Primo: Bravo signor padrone! (Recitativo: Figaro)
type: MusicRecording
duration: PT0M49S
duration ms: 49480
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Christian Van Horn
by artist: musicAeterna
by artist: Mary-Ellen Nesi
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 5
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303802
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T13:53:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5174e11dc5db4daea55f7034e610a50949cea503e4d42418d201cb40496c0103
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960117
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960117
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303802
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T14:28:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5174e11dc5db4daea55f7034e610a50949cea503e4d42418d201cb40496c0103. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303802.
  date published: 2026-07-29T14:28:24Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Bravo signor padrone! (Recitativo: Figaro)
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 101.393
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.244
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.566
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.426
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Secondo: Tutto è come il lasciai (Recitativo: Il Conte, La Contessa)
type: MusicRecording
duration: PT1M17S
duration ms: 77933
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303832
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T20:05:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x33302374077ce8560f2eacbe0eb0ae6459b13be96458a8940ad228902b9f2e85
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303832
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33302374077ce8560f2eacbe0eb0ae6459b13be96458a8940ad228902b9f2e85. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303832.
  date published: 2026-07-08T03:20:19Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Tutto è come il lasciai (Recitativo: Il Conte, La Contessa)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.729
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.585
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.025
  additional property: Liveness
    type: PropertyValue
    value: 0.212
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.24
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.733
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le nozze di Figaro, K. 492: Atto Primo: Se vuol ballare signor Contino (No. 3, Cavatina: Figaro)
type: MusicRecording
duration: PT2M40S
duration ms: 160280
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Christian Van Horn
by artist: musicAeterna
by artist: Mary-Ellen Nesi
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 7
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303803
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T15:39:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x87cfa3508c3dbc4a3d52d4dc9e2713ac8e7b32b48f264f25c1c6b91d62b6d5e4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303803
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cfa3508c3dbc4a3d52d4dc9e2713ac8e7b32b48f264f25c1c6b91d62b6d5e4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303803.
  date published: 2026-07-29T19:35:34Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Se vuol ballare signor Contino (No. 3, Cavatina: Figaro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.705
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.404
  additional property: Energy
    type: PropertyValue
    value: 0.223
  additional property: Speechiness
    type: PropertyValue
    value: 0.086
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.585
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.182
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.884
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Secondo: Esci omai garzon malnato (No. 16, Finale: Il Conte, La Contessa)
type: MusicRecording
duration: PT2M34S
duration ms: 154906
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303833
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T09:34:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa0f260d75ccfc53d3639f32fa304ea8387b8542a671f1b80ff2d8c91e1f1e303
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957050
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957050
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303833
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:41:13Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f260d75ccfc53d3639f32fa304ea8387b8542a671f1b80ff2d8c91e1f1e303. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303833.
  date published: 2026-07-07T14:41:13Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Esci omai garzon malnato (No. 16, Finale: Il Conte, La Contessa)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.62
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.462
  additional property: Energy
    type: PropertyValue
    value: 0.347
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.674
  additional property: Liveness
    type: PropertyValue
    value: 0.443
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.565
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.342
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Primo: Ed aspettaste il giorno fissato a le sue nozze (Recitativo: Bartolo, Marcellina)
type: MusicRecording
duration: PT1M9S
duration ms: 69346
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Maria Forsstrom
by artist: Mary-Ellen Nesi
by artist: Nikolai Loskutkin
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 5
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303804
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T16:26:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x001922eb23fb77e5a99a2d86602a5b736b070a501feb931d86a2f22490dc60dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303804
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001922eb23fb77e5a99a2d86602a5b736b070a501feb931d86a2f22490dc60dc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303804.
  date published: 2026-07-29T19:35:34Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Ed aspettaste il giorno fissato a le sue nozze (Recitativo: Bartolo, Marcellina)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.438
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.603
  additional property: Energy
    type: PropertyValue
    value: 0.087
  additional property: Speechiness
    type: PropertyValue
    value: 0.182
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.323
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.339
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.764
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Secondo: Signore, cos'è quel stupore? (Susanna, Il Conte, La Contessa)
type: MusicRecording
duration: PT1M29S
duration ms: 89306
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: Fanie Antonelou
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303834
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T19:01:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d966bbe2f64908c85f56fecdd8e5bc850057e0ed96b7c21093b996e2960a512
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303834
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d966bbe2f64908c85f56fecdd8e5bc850057e0ed96b7c21093b996e2960a512. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303834.
  date published: 2026-07-29T19:35:34Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Signore, cos'è quel stupore? (Susanna, Il Conte, La Contessa)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.868
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.252
  additional property: Energy
    type: PropertyValue
    value: 0.055
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.02
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.208
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.928
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
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Le nozze di Figaro, K. 492: Atto Primo: La vendetta, oh la vendetta (No. 4, Aria: Bartolo)
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duration: PT3M6S
duration ms: 186173
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Nikolai Loskutkin
by artist: musicAeterna
by artist: Mary-Ellen Nesi
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 5
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303805
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-29T12:54:27+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303805
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:09:35Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb0411b10beb4dab068e33e28972b2eabb71877cc6eb3991fad87ee396f4853. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303805.
  date published: 2026-07-29T13:09:35Z
audio: Le nozze di Figaro, K. 492: Atto Primo: La vendetta, oh la vendetta (No. 4, Aria: Bartolo)
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Le nozze di Figaro, K. 492: Atto Secondo: Susanna, son morta: il fiato mi manca (La Contessa, Susanna, Il Conte)
type: MusicRecording
duration: PT2M58S
duration ms: 178013
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: Fanie Antonelou
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303835
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957048
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303835
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:18:56Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557bd30603d7aa0405b490d29a59438469b3060805fef296634b1bbc3f261ae8. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303835.
  date published: 2026-07-07T14:18:56Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Susanna, son morta: il fiato mi manca (La Contessa, Susanna, Il Conte)
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Acousticness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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Le nozze di Figaro, K. 492: Atto Primo: Tutto ancor non ho perso (Recitativo: Marcellina, Susanna)
type: MusicRecording
duration: PT0M42S
duration ms: 42840
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Fanie Antonelou
by artist: Maria Forsstrom
by artist: musicAeterna
by artist: Mary-Ellen Nesi
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303806
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T12:22:47+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960106
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303806
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T12:41:21Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc703a12f5168844fa1d0a9daa7245517f1053f4bd323491ee7ec3a24bb2cc7. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303806.
  date published: 2026-07-29T12:41:21Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Tutto ancor non ho perso (Recitativo: Marcellina, Susanna)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.634
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.478
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.376
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Le nozze di Figaro, K. 492: Atto Secondo: Signori, di fuori son gia i suonatori (Figaro, Il Conte, La Contessa, Susanna)
type: MusicRecording
duration: PT1M3S
duration ms: 63213
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: Christian Van Horn
by artist: Fanie Antonelou
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303836
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T23:57:30+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960173
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303836
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T00:11:40Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e27788af92ab1fe5e1caa9c1aad2b78589919f76ba89c0c85c991ba8f5fc14. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303836.
  date published: 2026-07-30T00:11:40Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Signori, di fuori son gia i suonatori (Figaro, Il Conte, La Contessa, Susanna)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.499
  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Le nozze di Figaro, K. 492: Atto Primo: Via, resti servita, madama brillante (No. 5, Duettino: Susanna, Marcellina)
type: MusicRecording
duration: PT2M14S
duration ms: 134306
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Fanie Antonelou
by artist: Maria Forsstrom
by artist: Mary-Ellen Nesi
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 6
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303807
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T11:04:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3080e546067a8393a469b83530c07a68f745214743c75e63d3fb865c946afec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960099
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303807
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:30:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3080e546067a8393a469b83530c07a68f745214743c75e63d3fb865c946afec. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303807.
  date published: 2026-07-29T11:30:20Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Via, resti servita, madama brillante (No. 5, Duettino: Susanna, Marcellina)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.386
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.465
  additional property: Loudness (dB)
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  additional property: Key Name
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Le nozze di Figaro, K. 492: Atto Secondo: Conoscete, signor Figaro (Il Conte, Figaro, La Contessa, Susanna)
type: MusicRecording
duration: PT2M15S
duration ms: 135440
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: Christian Van Horn
by artist: Fanie Antonelou
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303837
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:03:17+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x3dbeeba1c626c0ed146a2187f8e87dbc249ad59243e312a2c8a09c76a0205a63
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957011
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957011
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303837
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T08:25:35Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbeeba1c626c0ed146a2187f8e87dbc249ad59243e312a2c8a09c76a0205a63. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303837.
  date published: 2026-07-07T08:25:35Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Conoscete, signor Figaro (Il Conte, Figaro, La Contessa, Susanna)
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  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.535
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Le nozze di Figaro, K. 492: Atto Primo: Va' là, vecchia pedante (Recitativo: Susanna, Cherubino)
type: MusicRecording
duration: PT2M5S
duration ms: 125400
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Fanie Antonelou
by artist: Mary-Ellen Nesi
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 5
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303808
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T04:30:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x179fdf331d521d2cdf4e8b425635ca84a77a71968ad659f5416b50da4b9ae05c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960207
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960207
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303808
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T04:47:22Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179fdf331d521d2cdf4e8b425635ca84a77a71968ad659f5416b50da4b9ae05c. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303808.
  date published: 2026-07-30T04:47:22Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Va' là, vecchia pedante (Recitativo: Susanna, Cherubino)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.324
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.598
  additional property: Energy
    type: PropertyValue
    value: 0.126
  additional property: Speechiness
    type: PropertyValue
    value: 0.172
  additional property: Acousticness
    type: PropertyValue
    value: 0.974
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.295
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.271
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.826
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Secondo: Ah signor... signor... Cosa è stato ... Vostre dunque saran... (Antonio, Il Conte, La Contessa, Susanna, Figaro)
type: MusicRecording
duration: PT5M38S
duration ms: 338946
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: Christian Van Horn
by artist: Fanie Antonelou
by artist: Garry Agadzhanian
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303838
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T21:57:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfe0e401c92e5de9395898c09155e8dd2a137170cf4a797d90c0f4465952be02d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960155
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960155
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303838
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T22:13:32Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0e401c92e5de9395898c09155e8dd2a137170cf4a797d90c0f4465952be02d. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303838.
  date published: 2026-07-29T22:13:32Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Ah signor... signor... Cosa è stato ... Vostre dunque saran... (Antonio, Il Conte, La Contessa, Susanna, Figaro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.586
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.407
  additional property: Energy
    type: PropertyValue
    value: 0.328
  additional property: Speechiness
    type: PropertyValue
    value: 0.089
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.398
  additional property: Liveness
    type: PropertyValue
    value: 0.233
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.246
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.868
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Primo: Non so più cosa son, cosa faccio (No. 6, Aria: Cherubino)
type: MusicRecording
duration: PT2M43S
duration ms: 163000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Mary-Ellen Nesi
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 6
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303809
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T03:15:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d0db5caede26b97385dc061f876a3fbdf419e8be2d4a7900359de208f164f42
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303809
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0db5caede26b97385dc061f876a3fbdf419e8be2d4a7900359de208f164f42. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303809.
  date published: 2026-07-06T06:56:49Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Non so più cosa son, cosa faccio (No. 6, Aria: Cherubino)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.855
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.39
  additional property: Energy
    type: PropertyValue
    value: 0.24
  additional property: Speechiness
    type: PropertyValue
    value: 0.094
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.134
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.07
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.373
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Secondo: Voi signor, che giusto siete ... Son confusa, son stordita (Marcellina, Basilio, Bartolo, Il Conte, La Contessa, Figaro, Susanna)
type: MusicRecording
duration: PT3M48S
duration ms: 228840
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Simone Kermes
by artist: Christian Van Horn
by artist: Fanie Antonelou
by artist: Maria Forsstrom
by artist: Nikolai Loskutkin
by artist: Krystian Adam
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 5
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303839
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T16:13:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa6bb697002930b8f194a4181054368bace16bebd0752336a7c075d28255c63a0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303839
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bb697002930b8f194a4181054368bace16bebd0752336a7c075d28255c63a0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303839.
  date published: 2026-07-29T19:35:34Z
audio: Le nozze di Figaro, K. 492: Atto Secondo: Voi signor, che giusto siete ... Son confusa, son stordita (Marcellina, Basilio, Bartolo, Il Conte, La Contessa, Figaro, Susanna)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.081
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.429
  additional property: Energy
    type: PropertyValue
    value: 0.379
  additional property: Speechiness
    type: PropertyValue
    value: 0.063
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.373
  additional property: Liveness
    type: PropertyValue
    value: 0.329
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.441
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.863
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Primo: Ah son perduto! (Recitativo: Cherubino, Susanna, Il Conte, Basilio)
type: MusicRecording
duration: PT1M49S
duration ms: 109693
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: Fanie Antonelou
by artist: Mary-Ellen Nesi
by artist: Krystian Adam
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 4
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303810
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T18:52:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc955f8a52e91f09511577cf5ee15a5df4ecdce245089c4427345a703baeb3b10
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303810
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc955f8a52e91f09511577cf5ee15a5df4ecdce245089c4427345a703baeb3b10. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303810.
  date published: 2026-07-08T03:22:41Z
audio: Le nozze di Figaro, K. 492: Atto Primo: Ah son perduto! (Recitativo: Cherubino, Susanna, Il Conte, Basilio)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.254
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.482
  additional property: Energy
    type: PropertyValue
    value: 0.076
  additional property: Speechiness
    type: PropertyValue
    value: 0.176
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.619
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.231
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.887
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492: Atto Terzo: Che imbarazzo è mai questo! (Recitativo: Il Conte)
type: MusicRecording
duration: PT1M5S
duration ms: 65440
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Teodor Currentzis
by artist: Andrei Bondarenko
by artist: musicAeterna
in album: Mozart: Le nozze di Figaro, K. 492
  type: MusicAlbum
  date published: 2014-02-14
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSM11303841
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T05:40:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x60abfd946a61ebb47f2639b028267bf708be76180012639c87a6ee4bef386a9c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303841
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60abfd946a61ebb47f2639b028267bf708be76180012639c87a6ee4bef386a9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11303841.
  date published: 2026-07-08T03:20:19Z
audio: Le nozze di Figaro, K. 492: Atto Terzo: Che imbarazzo è mai questo! (Recitativo: Il Conte)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.481
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.572
  additional property: Energy
    type: PropertyValue
    value: 0.065
  additional property: Speechiness
    type: PropertyValue
    value: 0.171
  additional property: Acousticness
    type: PropertyValue
    value: 0.974
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.138
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.187