Martin Vantin
type: MusicGroup
genre: opera
popularity: 8
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x3b17b72714d6f8a1c59163afb9890624bc7392d74dd96a9a6303ae388c001506
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6ebb1e43-ba3f-478c-a29b-2c09a3eba0fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6ebb1e43-ba3f-478c-a29b-2c09a3eba0fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6ebb1e43-ba3f-478c-a29b-2c09a3eba0fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3b17b72714d6f8a1c59163afb9890624bc7392d74dd96a9a6303ae388c001506","name":"Martin Vantin","registered_at":"2026-06-17T04:14:50Z","symbol":"NIM1277877","token_address":"0xe210d787c907eeaca62ee70c6c6b5027b3aba09b","type":"artist","uuid":"6ebb1e43-ba3f-478c-a29b-2c09a3eba0fd"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b17b72714d6f8a1c59163afb9890624bc7392d74dd96a9a6303ae388c001506. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ebb1e43-ba3f-478c-a29b-2c09a3eba0fd.json and https://artists.proofprofile.net/proofs/artist/6ebb1e43-ba3f-478c-a29b-2c09a3eba0fd.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x3b17b72714d6f8a1c59163afb9890624bc7392d74dd96a9a6303ae388c001506","name":"Martin Vantin","registered_at":"2026-06-17T04:14:50Z","symbol":"NIM1277877","token_address":"0xe210d787c907eeaca62ee70c6c6b5027b3aba09b","type":"artist","uuid":"6ebb1e43-ba3f-478c-a29b-2c09a3eba0fd"}
album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
  track: Le nozze di Figaro, K. 492: Overture
    type: MusicRecording
    duration: PT4M16S
    duration ms: 256933
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    by artist: Wolfgang Amadeus Mozart
    by artist: Orchester der Deutschen Oper Berlin
    by artist: Karl Böhm
    in album: Mozart: Le nozze di Figaro - Highlights
      type: MusicAlbum
      date published: 1968-01-01
    genre: classical
    genre: classical-era
    genre: classical-piano
    genre: opera
    genre: chamber-music
    genre: concerto
    isrc code: DEF056830101
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-06T09:50:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x02667d2027ad6113bed965a60c429e8592e474ed6ab9d69c7c4ad53e23843743
    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/DEF056830101
    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 0x02667d2027ad6113bed965a60c429e8592e474ed6ab9d69c7c4ad53e23843743. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830101 — a six-check JSON result.
      date published: 2026-07-02T03:30:09Z
    audio: Le nozze di Figaro, K. 492: Overture
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 145.951
      additional property: Musical Key
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        type: PropertyValue
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        type: PropertyValue
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      additional property: Energy
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.254
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        type: PropertyValue
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  track: Le nozze di Figaro, K. 492, Act I: No. 2, Duet. Se a caso madama la notte ti chiama
    type: MusicRecording
    duration: PT2M36S
    duration ms: 156626
    explicit: false
    by artist: Wolfgang Amadeus Mozart
    by artist: Edith Mathis
    by artist: Hermann Prey
    by artist: Orchester der Deutschen Oper Berlin
    by artist: Karl Böhm
    in album: Mozart: Le nozze di Figaro - Highlights
      type: MusicAlbum
      date published: 1968-01-01
    genre: classical
    genre: classical-era
    genre: classical-piano
    genre: opera
    genre: chamber-music
    genre: concerto
    isrc code: DEF056830103
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x426020da033afc6eab469abdbd9fd2851f00e4e5dadbbe4beae592895303f519
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960125
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830103
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-29T15:38:18Z
    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 0x426020da033afc6eab469abdbd9fd2851f00e4e5dadbbe4beae592895303f519. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830103 — a six-check JSON result.
      date published: 2026-07-29T15:38:18Z
    audio: Le nozze di Figaro, K. 492, Act I: No. 2, Duet. Se a caso madama la notte ti chiama
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.383
      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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        value: 1
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        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.557
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      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
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  track: Le nozze di Figaro, K. 492, Act I: No. 3, Se vuol ballare, signor Contino
  track: Le nozze di Figaro, K. 492, Act I: No. 4, La vendetta, oh, la vendetta!
  track: Le nozze di Figaro, K. 492, Act I: No. 6, Non so più cosa son, cosa faccio
  track: Le nozze di Figaro, K. 492, Act I: No. 10, Non più andrai
  track: Le nozze di Figaro, K. 492, Act II: No. 11, Porgi amor
  track: Le nozze di Figaro, K. 492, Act II: No. 12, Voi che sapete
  track: Le nozze di Figaro, K. 492, Act II: No. 13, Venite inginocchiatevi
  track: Le nozze di Figaro, K. 492, Act III: No. 18, Vedrò mentr'io sospiro
  track: Le nozze di Figaro, K. 492, Act III: No. 20a, E Susanna non vien!
  track: Le nozze di Figaro, K. 492, Act III: No. 20b, Dove sono i bei momenti
  track: Le nozze di Figaro, K. 492, Act III: No. 21, Sull' aria... Che soave zeffiretto "Letter Duet"
  track: Le nozze di Figaro, K. 492, Act IV: No. 24, L'ho perduta, me meschina
  track: Le nozze di Figaro, K. 492, Act IV: No. 27, Aprite un po' quegl' occhi
  track: Le nozze di Figaro, K. 492, Act IV: No. 28a, Giunse alfin il momento
  track: Le nozze di Figaro, K. 492, Act IV: No. 28b, Deh vieni, non tardar
  track: Le nozze di Figaro, K. 492, Act IV: No. 29e-g, Finale. Gente, gente, all'armi... Questo giorno di tormenti
track: Die Zauberflöte, K. 620 / Erster Aufzug: "Zum Ziele führt dich diese Bahn"

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Acousticness
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Instrumentalness
type: PropertyValue
value: 0.002

Liveness
type: PropertyValue
value: 0.132

Valence (Positivity)
type: PropertyValue
value: 0.286

Loudness (dB)
type: PropertyValue
value: -23.186

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Major

Le nozze di Figaro, K. 492, Act I: No. 3, Se vuol ballare, signor Contino
type: MusicRecording
duration: PT2M34S
duration ms: 154600
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hermann Prey
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830124
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b939f0db984ff936a0ec2a3b6a9d94030abdcca0307e4900412fe7ee9abdac0
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/DEF056830124
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 0x2b939f0db984ff936a0ec2a3b6a9d94030abdcca0307e4900412fe7ee9abdac0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830124 — a six-check JSON result.
  date published: 2026-07-30T04:47:22Z
audio: Le nozze di Figaro, K. 492, Act I: No. 3, Se vuol ballare, signor Contino
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  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.959
  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: 0.553
  additional property: Energy
    type: PropertyValue
    value: 0.086
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
    value: 0.131
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.308
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.592
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    type: PropertyValue
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Le nozze di Figaro, K. 492, Act I: No. 4, La vendetta, oh, la vendetta!
type: MusicRecording
duration: PT3M8S
duration ms: 188826
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Peter Lagger
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830105
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T06:41:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x10c46cc80a7b134a5b027109f170b3413dc759690c3982face2228626be21163
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/DEF056830105
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 0x10c46cc80a7b134a5b027109f170b3413dc759690c3982face2228626be21163. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830105 — a six-check JSON result.
  date published: 2026-07-07T18:39:05Z
audio: Le nozze di Figaro, K. 492, Act I: No. 4, La vendetta, oh, la vendetta!
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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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    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.392
  additional property: Energy
    type: PropertyValue
    value: 0.153
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.198
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.335
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.076
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Act I: No. 6, Non so più cosa son, cosa faccio
type: MusicRecording
duration: PT3M14S
duration ms: 194600
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Tatiana Troyanos
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830106
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T16:24:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x253c992e590ae298e62321882ea2fbfa093396a26013da6819c88dd73222ff7d
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/DEF056830106
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 0x253c992e590ae298e62321882ea2fbfa093396a26013da6819c88dd73222ff7d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830106 — a six-check JSON result.
  date published: 2026-07-29T19:35:34Z
audio: Le nozze di Figaro, K. 492, Act I: No. 6, Non so più cosa son, cosa faccio
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    type: PropertyValue
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Le nozze di Figaro, K. 492, Act I: No. 10, Non più andrai
type: MusicRecording
duration: PT3M42S
duration ms: 222360
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hermann Prey
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830108
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T05:13:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf58e12568caad2508140870c3f015e1bc72d866858d6a508b191066a47d478c7
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 959100
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959100
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830108
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T05:29:55Z
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 0xf58e12568caad2508140870c3f015e1bc72d866858d6a508b191066a47d478c7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830108 — a six-check JSON result.
  date published: 2026-07-22T05:29:55Z
audio: Le nozze di Figaro, K. 492, Act I: No. 10, Non più andrai
  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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  additional property: Liveness
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  additional property: Valence (Positivity)
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Le nozze di Figaro, K. 492, Act II: No. 11, Porgi amor
type: MusicRecording
duration: PT4M15S
duration ms: 255320
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Gundula Janowitz
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830109
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T19:34:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x99d3c17558ae6002f7e874bf92541a74bf6250510695503e2bf95b4365304798
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957075
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957075
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830109
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:50:38Z
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 0x99d3c17558ae6002f7e874bf92541a74bf6250510695503e2bf95b4365304798. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830109 — a six-check JSON result.
  date published: 2026-07-07T18:50:38Z
audio: Le nozze di Figaro, K. 492, Act II: No. 11, Porgi amor
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  additional property: Tempo (BPM)
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    value: 112.687
  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: 0.163
  additional property: Energy
    type: PropertyValue
    value: 0.016
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
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    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.006
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.231
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Act II: No. 12, Voi che sapete
type: MusicRecording
duration: PT3M3S
duration ms: 183800
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Tatiana Troyanos
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
popularity: 15
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830110
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T03:03:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9abdef85adf9912748223a2c4e1a5e70b32c807391100d0aa5775ad7836117ce
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/DEF056830110
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 0x9abdef85adf9912748223a2c4e1a5e70b32c807391100d0aa5775ad7836117ce. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830110 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Le nozze di Figaro, K. 492, Act II: No. 12, Voi che sapete
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.479
  additional property: Musical Key
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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: 0.299
  additional property: Energy
    type: PropertyValue
    value: 0.065
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.521
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.133
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.133
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
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Le nozze di Figaro, K. 492, Act II: No. 13, Venite inginocchiatevi
type: MusicRecording
duration: PT3M14S
duration ms: 194226
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Edith Mathis
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830111
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x68b39513751dd2644e860dbc0311ebd4c130003d5b97e0c5dd725145dc97e21e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960193
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960193
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830111
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T02:05:19Z
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 0x68b39513751dd2644e860dbc0311ebd4c130003d5b97e0c5dd725145dc97e21e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830111 — a six-check JSON result.
  date published: 2026-07-30T02:05:19Z
audio: Le nozze di Figaro, K. 492, Act II: No. 13, Venite inginocchiatevi
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.108
  additional property: Musical Key
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    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: 0.433
  additional property: Energy
    type: PropertyValue
    value: 0.076
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.949
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.17
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.328
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.27
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
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Le nozze di Figaro, K. 492, Act III: No. 18, Vedrò mentr'io sospiro
type: MusicRecording
duration: PT3M32S
duration ms: 212866
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Dietrich Fischer-Dieskau
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830184
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T09:31:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb2181107f648bba1f6a0a26a34646262b47d637dcb3abd3171e1617e82e67a0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960240
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960240
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830184
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:57:33Z
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 0xbb2181107f648bba1f6a0a26a34646262b47d637dcb3abd3171e1617e82e67a0. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830184 — a six-check JSON result.
  date published: 2026-07-30T09:57:33Z
audio: Le nozze di Figaro, K. 492, Act III: No. 18, Vedrò mentr'io sospiro
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 163.013
  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: 0.31
  additional property: Energy
    type: PropertyValue
    value: 0.236
  additional property: Speechiness
    type: PropertyValue
    value: 0.13
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  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: 0.32
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Le nozze di Figaro, K. 492, Act III: No. 20a, E Susanna non vien!
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duration: PT1M45S
duration ms: 105160
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Gundula Janowitz
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830160
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T02:26:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ccfffce231989b5d446f7d6f2d4a0b75d27e6ddba5ad829ed9870b8fc1f308f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960203
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960203
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830160
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T03:35:13Z
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 0x7ccfffce231989b5d446f7d6f2d4a0b75d27e6ddba5ad829ed9870b8fc1f308f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830160 — a six-check JSON result.
  date published: 2026-07-30T03:35:13Z
audio: Le nozze di Figaro, K. 492, Act III: No. 20a, E Susanna non vien!
  type: AudioObject
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    type: PropertyValue
    value: 104.456
  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: 0.36
  additional property: Energy
    type: PropertyValue
    value: 0.033
  additional property: Speechiness
    type: PropertyValue
    value: 0.083
  additional property: Acousticness
    type: PropertyValue
    value: 0.945
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.482
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.047
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.571
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  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le nozze di Figaro, K. 492, Act III: No. 20b, Dove sono i bei momenti
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duration: PT4M58S
duration ms: 298266
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Gundula Janowitz
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830161
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc1960a14e1c150391f9597e7d7e5a5581498b7ea3ce1ff51ca80eef52c1b02a1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960108
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/DEF056830161
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 0xc1960a14e1c150391f9597e7d7e5a5581498b7ea3ce1ff51ca80eef52c1b02a1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830161 — a six-check JSON result.
  date published: 2026-07-29T13:09:35Z
audio: Le nozze di Figaro, K. 492, Act III: No. 20b, Dove sono i bei momenti
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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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    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.073
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.96
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    value: Major

Le nozze di Figaro, K. 492, Act III: No. 21, Sull' aria... Che soave zeffiretto "Letter Duet"
type: MusicRecording
duration: PT3M31S
duration ms: 211026
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Edith Mathis
by artist: Gundula Janowitz
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830114
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T12:59:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2571e35f8bb7ddffa9fbbbdace6d7387632712a251a3e5904657b7624150fce7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830114
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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 0x2571e35f8bb7ddffa9fbbbdace6d7387632712a251a3e5904657b7624150fce7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830114 — a six-check JSON result.
  date published: 2026-06-13T17:25:41Z
audio: Le nozze di Figaro, K. 492, Act III: No. 21, Sull' aria... Che soave zeffiretto "Letter Duet"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.467
  additional property: Musical Key
    type: PropertyValue
    value: 10
  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: 0.248
  additional property: Energy
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    value: 0.054
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.457
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.077
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.509
  additional property: Key Name
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    value: Bb
  additional property: Mode Name
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Le nozze di Figaro, K. 492, Act IV: No. 24, L'ho perduta, me meschina
type: MusicRecording
duration: PT1M39S
duration ms: 99866
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Barbara Vogel
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830115
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T14:38:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e5da1bb258ab204e7fcf28ed470e5c72f51b0ef3dd090f60a14a94ecfd622ba
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/DEF056830115
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 0x0e5da1bb258ab204e7fcf28ed470e5c72f51b0ef3dd090f60a14a94ecfd622ba. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830115 — a six-check JSON result.
  date published: 2026-07-29T15:22:21Z
audio: Le nozze di Figaro, K. 492, Act IV: No. 24, L'ho perduta, me meschina
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 80.662
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.285
  additional property: Energy
    type: PropertyValue
    value: 0.025
  additional property: Speechiness
    type: PropertyValue
    value: 0.059
  additional property: Acousticness
    type: PropertyValue
    value: 0.966
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.052
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.813
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le nozze di Figaro, K. 492, Act IV: No. 27, Aprite un po' quegl' occhi
type: MusicRecording
duration: PT2M37S
duration ms: 157933
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hermann Prey
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830175
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T20:07:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x334378258061b55b4069e4cc0a1d25a191b442129e487e7f96d8a9e2ae183910
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830175
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47Z
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 0x334378258061b55b4069e4cc0a1d25a191b442129e487e7f96d8a9e2ae183910. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830175 — a six-check JSON result.
  date published: 2026-07-29T21:09:47Z
audio: Le nozze di Figaro, K. 492, Act IV: No. 27, Aprite un po' quegl' occhi
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.319
  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: 0.556
  additional property: Energy
    type: PropertyValue
    value: 0.259
  additional property: Speechiness
    type: PropertyValue
    value: 0.063
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.588
  additional property: Liveness
    type: PropertyValue
    value: 0.076
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.512
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.324
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Act IV: No. 28a, Giunse alfin il momento
type: MusicRecording
duration: PT1M22S
duration ms: 82933
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Edith Mathis
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830177
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:56:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8311c5ac35fad9d67d1d530630329757cb4c2fbd44b835415463a71239f6b43
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/DEF056830177
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 0xe8311c5ac35fad9d67d1d530630329757cb4c2fbd44b835415463a71239f6b43. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830177 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Le nozze di Figaro, K. 492, Act IV: No. 28a, Giunse alfin il momento
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.394
  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: 0.384
  additional property: Energy
    type: PropertyValue
    value: 0.038
  additional property: Speechiness
    type: PropertyValue
    value: 0.09
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.408
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.078
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.071
  additional property: Key Name
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  additional property: Mode Name
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    value: Major

Le nozze di Figaro, K. 492, Act IV: No. 28b, Deh vieni, non tardar
type: MusicRecording
duration: PT4M9S
duration ms: 249786
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Edith Mathis
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830178
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T15:28:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf6cea390ce33f31f21654a0adc765f018e9841f581fc4709438de24fa0e8df9f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830178
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38Z
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 0xf6cea390ce33f31f21654a0adc765f018e9841f581fc4709438de24fa0e8df9f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830178 — a six-check JSON result.
  date published: 2026-07-30T15:42:38Z
audio: Le nozze di Figaro, K. 492, Act IV: No. 28b, Deh vieni, non tardar
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.803
  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: 0.249
  additional property: Energy
    type: PropertyValue
    value: 0.032
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.07
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.389
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Le nozze di Figaro, K. 492, Act IV: No. 29e-g, Finale. Gente, gente, all'armi... Questo giorno di tormenti
type: MusicRecording
duration: PT5M7S
duration ms: 307573
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Barbara Vogel
by artist: Edith Mathis
by artist: Gundula Janowitz
by artist: Tatiana Troyanos
by artist: Patricia Johnson
by artist: Martin Vantin
by artist: Erwin Wohlfahrt
by artist: Hermann Prey
by artist: Dietrich Fischer-Dieskau
by artist: Klaus Hirte
by artist: Peter Lagger
by artist: Orchester der Deutschen Oper Berlin
by artist: Karl Böhm
in album: Mozart: Le nozze di Figaro - Highlights
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEF056830118
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T23:22:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1cb0326f164ec3447479141e880d428d2b6c66508e3bf805045c3dc56d687c35
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960166
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960166
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830118
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T23:39:29Z
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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audio: Le nozze di Figaro, K. 492, Act IV: No. 29e-g, Finale. Gente, gente, all'armi... Questo giorno di tormenti
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Die Zauberflöte, K. 620 / Erster Aufzug: "Zum Ziele führt dich diese Bahn"
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by artist: Wolfgang Amadeus Mozart
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by artist: Fritz Wunderlich
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by artist: Martin Vantin
by artist: Manfred Röhrl
by artist: Hans Hotter
by artist: Berliner Philharmoniker
by artist: Karl Böhm
by artist: RIAS Kammerchor
by artist: Günther Arndt
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  date published: 2005-01-01
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  date published: 2026-07-29T19:35:34Z
audio: Die Zauberflöte, K. 620 / Erster Aufzug: "Zum Ziele führt dich diese Bahn"
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