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description: Ilya Haimovich Grubert (, ; born 13 May 1954 in Riga) is a classical violinist and professor. Biography Ilya Grubert began his violin studies at the Emīls Dārziņš Music School. He later studied at t
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  track: Eine kleine Nachtmusik in G Major, K. 525: IV. Rondò. Allegro
  track: Flute and Harp Concerto in C Major, K. 299: III. Rondò. Allegro
  track: Flute Concerto No. 1 in G Major, K. 313: III. Rondò - Minuetto
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963452f30ff87aa0fcbce486bbfa1322e4245a796d8b618ffa901e1ff421c6a9. 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/ITD541500154.
  date published: 2026-07-02T03:55:08Z
audio: Divertimento in D Major, K. 251: IV. Minuetto con variazione
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Divertimento in D Major, K. 251: V. Allegro assai
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duration: PT5M13S
duration ms: 313746
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Orchestra da Camera Fiorentina
by artist: Giuseppe Lanzetta
in album: Mozart - Orchestral Works Collection
  type: MusicAlbum
  date published: 2017-06-16
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: ITD541500155
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 0x40f2e4331aab486757a25af6e9d697d9ffa765a4818ad4f1c8cec83277eaf22e. 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/ITD541500155.
  date published: 2026-07-02T03:55:08Z
audio: Divertimento in D Major, K. 251: V. Allegro assai
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Eine kleine Nachtmusik in G Major, K. 525: IV. Rondò. Allegro
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duration: PT3M12S
duration ms: 192400
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Opole Philharmonic Orchestra
by artist: Werner Stiefel
in album: Mozart - Orchestral Works Collection
  type: MusicAlbum
  date published: 2017-06-16
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: ITD541501497
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: 2026-07-02T03:55:08Z
audio: Eine kleine Nachtmusik in G Major, K. 525: IV. Rondò. Allegro
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Flute and Harp Concerto in C Major, K. 299: III. Rondò. Allegro
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duration: PT10M33S
duration ms: 633173
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Opole Philarmonic Orchestra
by artist: Silvano Frontalini
by artist: Ursula Mazurek
in album: Mozart - Orchestral Works Collection
  type: MusicAlbum
  date published: 2017-06-16
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: ITD541400352
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
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd76a080f69081631d661246b278b0939856eed5fcfaa64bf1c47cf0bf97547. 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/ITD541400352.
  date published: 2026-07-02T03:55:08Z
audio: Flute and Harp Concerto in C Major, K. 299: III. Rondò. Allegro
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Flute Concerto No. 1 in G Major, K. 313: III. Rondò - Minuetto
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duration: PT7M45S
duration ms: 465666
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Opole Philarmonic Orchestra
by artist: Silvano Frontalini
by artist: Ubaldo Rosso
in album: Mozart - Orchestral Works Collection
  type: MusicAlbum
  date published: 2017-06-16
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: ITD541400348
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
  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 0x32c31c37919ee35d6f830fd549988911c158c0bfc3a43de41369b178f7353dc5. 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/ITD541400348.
  date published: 2026-07-02T03:55:08Z
audio: Flute Concerto No. 1 in G Major, K. 313: III. Rondò - Minuetto
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  additional property: Tempo (BPM)
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  additional property: Valence (Positivity)
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Mozart: Classical Music for Relaxation
type: MusicAlbum
date published: 2017-04-21
track: Lucio Silla, K. 135, Overture: II. Andante
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    date published: 2017-04-21
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
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  isrc code: ITD541500043
  additional property: CopyrightID
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  additional property: OTSVerificationAPI
    type: PropertyValue
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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 0x0093fa75a8f392c87c2b7640d2139ec6ce350cb120b6f6361d96333439146273. 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/ITD541500043.
    date published: 2026-07-02T03:55:08Z
  audio: Lucio Silla, K. 135, Overture: II. Andante
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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: Speechiness
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track: Flute and Harp Concerto in C Major, K. 299: II. Andantino
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    date published: 2017-04-21
  genre: classical
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  genre: classical-piano
  genre: opera
  genre: chamber-music
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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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track: Eine kleine Nachtmusik in G Major, K. 525: II. Romanza. Andante
track: Piano Sonata in B-Flat Major, K. 333: I. Allegro
track: Piano Sonata in B-Flat Major, K. 333: II. Andante cantabile
track: Piano Sonata in B-Flat Major, K. 333: III. Allegretto grazioso
track: Flute Concerto No. 1 in G Major, K. 313: III. Rondò - Minuetto
track: Andante for Flute and Orchestra in C Major, K. 315
track: Symphony No. 36 in C Major, K. 425 "Linzer": II. Poco adagio
track: Clarinet Concerto in A Major, K. 622: I. Allegro - Live Recording
track: Piano Concerto No. 21 in C Major, K. 467: II. Andante
track: Piano Sonata No. 16 in C Major, K. 545 "For Beginners": II. Andante
track: Piano Sonata No. 17 in B-Flat Major, K. 570: II. Adagio
track: Piano Concerto No. 19 in F Major, K. 459: III. Allegro assai
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track: Symphony No. 1 in E-Flat Major, K. 16: II. Andante - Live Recording
track: Divertimento No. 1 in E-Flat Major, K. 113: II. Andante - Live Recording

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Eine kleine Nachtmusik in G Major, K. 525: II. Romanza. Andante
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Piano Sonata in B-Flat Major, K. 333: I. Allegro
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Piano Sonata in B-Flat Major, K. 333: II. Andante cantabile
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Piano Sonata in B-Flat Major, K. 333: III. Allegretto grazioso
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Flute Concerto No. 1 in G Major, K. 313: III. Rondò - Minuetto
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Andante for Flute and Orchestra in C Major, K. 315
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Symphony No. 36 in C Major, K. 425 "Linzer": II. Poco adagio
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Clarinet Concerto in A Major, K. 622: I. Allegro - Live Recording
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Piano Concerto No. 21 in C Major, K. 467: II. Andante
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Piano Sonata No. 16 in C Major, K. 545 "For Beginners": II. Andante
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Piano Sonata No. 17 in B-Flat Major, K. 570: II. Adagio
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Piano Concerto No. 19 in F Major, K. 459: III. Allegro assai
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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: 2026-07-07T14:04:01Z
audio: Piano Concerto No. 19 in F Major, K. 459: III. Allegro assai
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Flute Concerto No. 2 in D Major, K. 314: II. Andante ma non troppo
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duration: PT7M43S
duration ms: 463098
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Orchestra da Camera Fiorentina
by artist: Giuseppe Lanzetta
by artist: Andreas Blau
in album: Mozart: Classical Music for Relaxation
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  date published: 2017-04-21
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: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:18:56Z
audio: Flute Concerto No. 2 in D Major, K. 314: II. Andante ma non troppo
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Sonata No. 1 for Harpsichord, Flute and Cello in B-Flat Major, K. 10: II. Andante
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duration: PT3M45S
duration ms: 225626
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Ubaldo Rosso
by artist: Ottavio Dantone
by artist: Gaetano Nasillo
in album: Mozart: Classical Music for Relaxation
  type: MusicAlbum
  date published: 2017-04-21
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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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: 2026-07-30T02:21:55Z
audio: Sonata No. 1 for Harpsichord, Flute and Cello in B-Flat Major, K. 10: II. Andante
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Violin Concerto No. 5 in A Major, K. 219: II. Adagio
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duration: PT11M55S
duration ms: 715337
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Orchestra da Camera Fiorentina
by artist: Giuseppe Lanzetta
by artist: Ilya Grubert
in album: Mozart: Classical Music for Relaxation
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  date published: 2017-04-21
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: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Violin Concerto No. 5 in A Major, K. 219: II. Adagio
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Symphony No. 41 in C Major, K. 551 "Jupiter": II. Andante cantabile
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duration: PT8M19S
duration ms: 499513
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Orchestra da Camera Fiorentina
by artist: Giuseppe Lanzetta
in album: Mozart: Classical Music for Relaxation
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  date published: 2017-04-21
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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 41 in C Major, K. 551 "Jupiter": II. Andante cantabile
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Bassoon Concerto in B-Flat Major, K. 191: II. Andante ma adagio - Live Recording
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duration: PT6M17S
duration ms: 377463
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: I Virtuosi del Teatro alla Scala
by artist: Gabriele Screpis
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ee8eb2aa08c2959097025359a1deceaf6a528b0ebbc26cbab6bcd285bd007e. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITD541501084.
  date published: 2026-07-30T12:45:34Z
audio: Bassoon Concerto in B-Flat Major, K. 191: II. Andante ma adagio - Live Recording
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Symphony No. 1 in E-Flat Major, K. 16: II. Andante - Live Recording
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duration: PT2M54S
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by artist: I Virtuosi del Teatro alla Scala
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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: 2026-07-30T15:42:38Z
audio: Symphony No. 1 in E-Flat Major, K. 16: II. Andante - Live Recording
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Divertimento No. 1 in E-Flat Major, K. 113: II. Andante - Live Recording
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by artist: I Virtuosi del Teatro alla Scala
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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: 2026-07-08T03:20:19Z
audio: Divertimento No. 1 in E-Flat Major, K. 113: II. Andante - Live Recording
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Classics of the Romantic Era
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date published: 2019-12-21
track: Les contes d'Hoffmann, Act III: Belle nuit, ô nuit d'amour "Barcarolle" (Instrumental Version)
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  by artist: David Parry
  by artist: London Philharmonic Orchestra
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    date published: 2019-12-21
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  genre: classical
  genre: german-romanticism
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  genre: french-opera
  genre: french-romanticism
  genre: operetta
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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: 2026-07-08T03:20:19Z
  audio: Les contes d'Hoffmann, Act III: Belle nuit, ô nuit d'amour "Barcarolle" (Instrumental Version)
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track: Carmen Suite No. 2: II. Habanera
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  duration: PT2M12S
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  by artist: David Parry
  by artist: London Philharmonic Orchestra
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    date published: 2019-12-21
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  genre: classical
  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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    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: Carmen Suite No. 2: II. Habanera
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track: Suite bergamasque, L. 75: III. Clair de lune
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  by artist: Claude Debussy
  by artist: Finghin Collins
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    type: MusicAlbum
    date published: 2019-12-21
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  genre: classical
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Suite bergamasque, L. 75: III. Clair de lune
track: Ave Maria, CG 89a
track: Liebesträume, S. 541: No. 3, Oh lieb, so lang du lieben kannst

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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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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 0x37979c0bf811d5a336a04a17d7e142d18e0d2e17ce37e308745366f5877aa3b7. 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/SEWDL9750011.
date published: 2026-07-08T03:20:19Z

Suite bergamasque, L. 75: III. Clair de lune
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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
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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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Ave Maria, CG 89a
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duration: PT2M34S
duration ms: 154400
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by artist: David Parry
by artist: London Philharmonic Orchestra
by artist: London Philharmonic Choir
in album: Classics of the Romantic Era
  type: MusicAlbum
  date published: 2019-12-21
popularity: 1
genre: opera
isrc code: SEWDL9750035
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
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: Ave Maria, CG 89a
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Liebesträume, S. 541: No. 3, Oh lieb, so lang du lieben kannst
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by artist: Henrik Måwe
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popularity: 3
genre: classical
genre: late-romantic-era
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additional property: CopyrightStatus
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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 0x4832500647f62f901cbb83e020407801c78233fbea6f984cfc210143903d114a. 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/SEWDL6018052.
  date published: 2026-07-08T03:20:19Z
audio: Liebesträume, S. 541: No. 3, Oh lieb, so lang du lieben kannst
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Romantic Era Classics
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date published: 2019-04-01
track: Ave Maria, D. 839
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The 99 Most Essential Pieces of the Romantic Era
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track: The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": I. Allegro non moto

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track: Orchestral Suite No. 3 in D Major, BWV 1068: V. Gigue
track: Préludes for Piano (Book 1), L 117: VI. Des pas sur la neige (Footsteps in the Snow): Triste et lent
track: Snöfrid (Snowy Peace), Improvisation for Reciter, Chorus and Orchestra, Op. 29

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    date published: 2026-08-01T00:40:43Z
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The Snow Maiden, Suite: I. Introduction "Le beau printemps"
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track: 24 Caprices for Solo Violin, Op. 1: Caprice No. 24 in A Minor: Tema con variazioni (Quasi presto)
track: Introduction and Rondo Capriccioso in A Minor for Violin and Orchestra, Op. 28
track: Ave Maria (after J.S. Bach)
track: Sonata No. 3 in D Minor for Violin and Piano, Op. 108: II. Adagio
track: Carmen Fantasy for Violin and Orchestra, Op. 25
track: Vocalise, Op. 34
track: Concerto in D Minor for Violin and Orchestra, Op. 47: III. Allegro ma non tanto
track: Alt-Wiener Tanzweisen (Old Viennese Melodies): III. Schön Rosmarin (Lovely Rosemary)
track: Concerto No. 2 in B Minor for Violin and Orchestra, Op. 7, "La Campanella": III. Rondo à la clochette: Allegro moderato

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Alt-Wiener Tanzweisen (Old Viennese Melodies): II. Liebesleid (Love's Sorrow)
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Träume for Violin and Orchestra, WWV 91b
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Concerto No. 1 in D Major for Violin and Orchestra, Op. 6: III. Rondo: Allegro spiritoso
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Nocturne in C Minor, Op. Posth.
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Fantasy in C Major for Violin and Orchestra, Op. 131
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24 Caprices for Solo Violin, Op. 1: Caprice No. 24 in A Minor: Tema con variazioni (Quasi presto)
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Introduction and Rondo Capriccioso in A Minor for Violin and Orchestra, Op. 28
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Ave Maria (after J.S. Bach)
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additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T15:12:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfe3c37fcdf097b35c51f2fd4bbf4c4259e1b95ab319583fa9ba3925d158ca519
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL0759904
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
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 0xfe3c37fcdf097b35c51f2fd4bbf4c4259e1b95ab319583fa9ba3925d158ca519. 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/SEWDL0759904.
  date published: 2026-07-31T15:20:15Z
audio: Ave Maria (after J.S. Bach)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.687
  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: 0.24
  additional property: Energy
    type: PropertyValue
    value: 0.175
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.93
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.709
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.222
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.992
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Sonata No. 3 in D Minor for Violin and Piano, Op. 108: II. Adagio
type: MusicRecording
duration: PT4M37S
duration ms: 277626
explicit: false
by artist: Emmy Verhey
by artist: Youri Egorov
in album: The Best Romantic Era Violin Music
  type: MusicAlbum
  date published: 2011-12-13
isrc code: SEWDL0722206
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T21:22:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7977ef47d75670e7ca034c366b5e032ed245ee4c3c63f0c6a6c670c5eeec21da
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL0722206
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44Z
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 0x7977ef47d75670e7ca034c366b5e032ed245ee4c3c63f0c6a6c670c5eeec21da. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEWDL0722206.
  date published: 2026-07-31T22:27:44Z
audio: Sonata No. 3 in D Minor for Violin and Piano, Op. 108: II. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.246
  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: 0.134
  additional property: Energy
    type: PropertyValue
    value: 0.093
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.944
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.801
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.047
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.944
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Carmen Fantasy for Violin and Orchestra, Op. 25
type: MusicRecording
duration: PT13M22S
duration ms: 802000
explicit: false
by artist: SWR Symphony Orchestra
by artist: Ion Tanase
in album: The Best Romantic Era Violin Music
  type: MusicAlbum
  date published: 2011-12-13
isrc code: SEWDL0721802
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T02:11:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8e8f70e61063ecb99a68e8d5ba171793f8ef87f790fdb4eac9d64a257dc5e594
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/SEWDL0721802
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 0x8e8f70e61063ecb99a68e8d5ba171793f8ef87f790fdb4eac9d64a257dc5e594. 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/SEWDL0721802.
  date published: 2026-07-02T03:30:09Z
audio: Carmen Fantasy for Violin and Orchestra, Op. 25
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 157.099
  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: 0.38
  additional property: Energy
    type: PropertyValue
    value: 0.189
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.757
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.538
  additional property: Liveness
    type: PropertyValue
    value: 0.235
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.221
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.596
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Vocalise, Op. 34
type: MusicRecording
duration: PT5M50S
duration ms: 350853
explicit: false
by artist: London Philharmonic Orchestra
by artist: Pieter Schoeman
in album: The Best Romantic Era Violin Music
  type: MusicAlbum
  date published: 2011-12-13
isrc code: SEWDL9750048
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T11:12:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5d641d7ea0a8ec52db0062dc95c27d8ac52d0d8fa914d57c6c1694337ddad300
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9750048
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 0x5d641d7ea0a8ec52db0062dc95c27d8ac52d0d8fa914d57c6c1694337ddad300. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEWDL9750048.
  date published: 2026-06-13T12:47:07Z
audio: Vocalise, Op. 34
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.825
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.121
  additional property: Energy
    type: PropertyValue
    value: 0.226
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.92
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.857
  additional property: Liveness
    type: PropertyValue
    value: 0.257
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.797
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Concerto in D Minor for Violin and Orchestra, Op. 47: III. Allegro ma non tanto
type: MusicRecording
duration: PT7M32S
duration ms: 452360
explicit: false
by artist: State Symphony Capella of Russia
by artist: Ilya Grubert
in album: The Best Romantic Era Violin Music
  type: MusicAlbum
  date published: 2011-12-13
genre: orthodox-chant
genre: russian-choir
isrc code: SEWDL0727303
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T11:25:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7758f3c3cd5f7cbdcc2305e16700f39e86313672681f04c9d6fa47061891e429
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL0727303
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
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 0x7758f3c3cd5f7cbdcc2305e16700f39e86313672681f04c9d6fa47061891e429. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEWDL0727303.
  date published: 2026-07-31T12:24:41Z
audio: Concerto in D Minor for Violin and Orchestra, Op. 47: III. Allegro ma non tanto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.527
  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: 0.434
  additional property: Energy
    type: PropertyValue
    value: 0.158
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.746
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.737
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.161
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.625
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Alt-Wiener Tanzweisen (Old Viennese Melodies): III. Schön Rosmarin (Lovely Rosemary)
type: MusicRecording
duration: PT2M0S
duration ms: 120106
explicit: false
by artist: Danica Moziova
by artist: Aladar Mozi
in album: The Best Romantic Era Violin Music
  type: MusicAlbum
  date published: 2011-12-13
isrc code: SEWDL0759910
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:53:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ba0c01541e65a281e259755df9d2a73f0da0ed072ef7bd238cdd120bcf74d95
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/SEWDL0759910
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 0x6ba0c01541e65a281e259755df9d2a73f0da0ed072ef7bd238cdd120bcf74d95. 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/SEWDL0759910.
  date published: 2026-07-08T03:20:19Z
audio: Alt-Wiener Tanzweisen (Old Viennese Melodies): III. Schön Rosmarin (Lovely Rosemary)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.971
  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: 0.71
  additional property: Energy
    type: PropertyValue
    value: 0.298
  additional property: Speechiness
    type: PropertyValue
    value: 0.078
  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.09
  additional property: Liveness
    type: PropertyValue
    value: 0.144
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.9
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.696
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Concerto No. 2 in B Minor for Violin and Orchestra, Op. 7, "La Campanella": III. Rondo à la clochette: Allegro moderato
type: MusicRecording
duration: PT7M30S
duration ms: 450080
explicit: false
by artist: Andrei Korsakov
by artist: State Symphony Capella of Russia
in album: The Best Romantic Era Violin Music
  type: MusicAlbum
  date published: 2011-12-13
isrc code: SEWDL9418002
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T21:23:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5b2a143ffd387e451a4519cbe821bae612a19ea34ebf23c54eb45310ddb212c7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9418002
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44Z
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 0x5b2a143ffd387e451a4519cbe821bae612a19ea34ebf23c54eb45310ddb212c7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEWDL9418002.
  date published: 2026-07-31T22:27:44Z
audio: Concerto No. 2 in B Minor for Violin and Orchestra, Op. 7, "La Campanella": III. Rondo à la clochette: Allegro moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.17
  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: 0.545
  additional property: Energy
    type: PropertyValue
    value: 0.209
  additional property: Speechiness
    type: PropertyValue
    value: 0.068
  additional property: Acousticness
    type: PropertyValue
    value: 0.937
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.345
  additional property: Liveness
    type: PropertyValue
    value: 0.147
  additional property: Valence (Positivity)
    type: PropertyValue
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The Merry Widow: "Lippen schweigen" (Orchestral)
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The Four Seasons, Concerto No. 4 In F Minor (L'inverno / Winter) RV. 297 (Op. 8, No. 4): II. Largo
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Xerxes: Largo
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Violin Concerto in D, Op. 77 - II. Adagio
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Piano Concerto In A Minor, Op. 16: II. Adagio
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Serenade No. 13 in G, 'Eine Kleine Nachtmusik' K. 525: II. Romanze (Andante)
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Tales Of Hoffmann: Barcarolle
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Thais: Meditation
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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: 2026-07-06T06:56:49Z
audio: Thais: Meditation
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Prelude To The Afternoon Of A Faun (Prelude A I'apres-Midi D'un Faune)
type: MusicRecording
duration: PT8M50S
duration ms: 530213
explicit: false
by artist: Claude Debussy
by artist: Süddeutsche Philharmonie
by artist: Alfred Scholz
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 3
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: USSJ10813895
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/USSJ10813895
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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fc981fe4aef893d1f68b112533f1563d160262e65ceebd56ce89cbe3fcd06f. 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/USSJ10813895.
  date published: 2026-07-08T03:20:19Z
audio: Prelude To The Afternoon Of A Faun (Prelude A I'apres-Midi D'un Faune)
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Piano Sonata No. 14 In C-Sharp Minor Op 27, No. 2 "Moonlight": I. Adagio Sostenuto
type: MusicRecording
duration: PT6M4S
duration ms: 364000
explicit: false
by artist: Ludwig van Beethoven
by artist: Dubravka Tomšič
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 6
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: USSJ10813858
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
  type: PropertyValue
  value: 2026-07-06T07:53:57Z
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 0x835ffb5ecff79e2c341f80b4f5fde162a05e1bb48fbf0fe4eb3bf26f941b38b2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USSJ10813858.
  date published: 2026-07-06T07:53:57Z
audio: Piano Sonata No. 14 In C-Sharp Minor Op 27, No. 2 "Moonlight": I. Adagio Sostenuto
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Songs Without Words, Op. 62: No. 6 in A Major: Molto allegro vivace "Fruhlinglied" (Spring Melody)
type: MusicRecording
duration: PT2M17S
duration ms: 137200
explicit: false
by artist: Felix Mendelssohn
by artist: Ilmar Lapinsch
by artist: Latvian Philharmonic Chamber Orchestra
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 9
genre: classical
genre: early-romantic-era
genre: german-romanticism
genre: classical-piano
genre: choral
genre: chamber-music
isrc code: USSJ10813870
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933ce3ead24bc63710e75f74dcaf1c40944dfaf3074d97328961f6fd60c9a310. 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/USSJ10813870.
  date published: 2026-07-02T03:30:09Z
audio: Songs Without Words, Op. 62: No. 6 in A Major: Molto allegro vivace "Fruhlinglied" (Spring Melody)
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Preludes, Op. 28 No. 15 In D-Flat Major "Raindrop" - Sostenuto
type: MusicRecording
duration: PT5M13S
duration ms: 313640
explicit: false
by artist: Frédéric Chopin
by artist: Peter Schmalfuss
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 3
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USSJ10813887
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/960258
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10813887
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:45:34Z
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 0xa60ec795d71cbf8cb637de30b9efcfb690ce3a31dc9614c5147b5a3eec0c9ad0. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USSJ10813887.
  date published: 2026-07-30T12:45:34Z
audio: Preludes, Op. 28 No. 15 In D-Flat Major "Raindrop" - Sostenuto
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Variations On An Original Theme, 'Enigma', Op. 36: VIII. W.N. (Allegretto) - IX. Nimrod (Adagio)
type: MusicRecording
duration: PT5M45S
duration ms: 345480
explicit: false
by artist: Edward Elgar
by artist: Koninklijk Filharmonisch Orkest van Vlaanderen
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 3
genre: classical
genre: late-romantic-era
genre: british-modern-classical
genre: victorian-britain
isrc code: USSJ10813896
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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  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/USSJ10813896
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedba5150a4b8d028be7e77c1f23d30ecca1dc7c97e3dbfa41ee6fa42b37aec85. 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/USSJ10813896.
  date published: 2026-07-30T04:47:22Z
audio: Variations On An Original Theme, 'Enigma', Op. 36: VIII. W.N. (Allegretto) - IX. Nimrod (Adagio)
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Dance Of The Blessed Spirits
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duration: PT10M12S
duration ms: 612560
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by artist: Christoph Willibald Gluck
by artist: Munich Chamber Orchestra
by artist: Hanspeter Gmür
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 8
genre: classical
genre: opera
isrc code: USSJ10813859
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
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1d632f8b04d96bce4c2108a0adc6f3372417483a1286c8579c5d42c43927bf. 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/USSJ10813859.
  date published: 2026-07-02T03:55:08Z
audio: Dance Of The Blessed Spirits
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Minuet In G, WoO 10 No. 2
type: MusicRecording
duration: PT2M18S
duration ms: 138506
explicit: false
by artist: Ludwig van Beethoven
by artist: Dieter Goldmann
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 5
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: USSJ10813871
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
  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: 2026-07-30T16:01:17Z
audio: Minuet In G, WoO 10 No. 2
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Piano Concerto No. 21 In C K. 467: II. Andante
type: MusicRecording
duration: PT5M37S
duration ms: 337066
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Mozart Festival Orchestra
by artist: Alberto Lizzio
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: USSJ10813888
additional property: CopyrightID
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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
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  date published: 2026-07-08T03:20:19Z
audio: Piano Concerto No. 21 In C K. 467: II. Andante
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Sleepers, Wake! (Wachet Auf, Ruft Uns Die Stimme )
type: MusicRecording
duration: PT4M38S
duration ms: 278106
explicit: false
by artist: Johann Sebastian Bach
by artist: Klemens Schnorr
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: USSJ10813897
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/USSJ10813897
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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  date published: 2026-07-29T21:51:49Z
audio: Sleepers, Wake! (Wachet Auf, Ruft Uns Die Stimme )
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Water Music Suite No. 1 In F Major, HV 348: V. Air
type: MusicRecording
duration: PT3M3S
duration ms: 183866
explicit: false
by artist: George Frideric Handel
by artist: Slovac Chamber Orchestra
by artist: Bohdan Warchal
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 5
genre: classical
genre: opera
genre: early-music
genre: baroque
genre: english-baroque
genre: german-baroque
genre: choral
isrc code: USSJ10813860
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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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
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 0x6955d026a3e720bca69aaed20f6d14fa66a669582dc2bf3ad88aca68f0e93cb4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USSJ10813860.
  date published: 2026-07-06T01:25:57Z
audio: Water Music Suite No. 1 In F Major, HV 348: V. Air
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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: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Menuetto
type: MusicRecording
duration: PT3M50S
duration ms: 230133
explicit: false
by artist: Luigi Boccherini
by artist: Bratislava Chamber Orchestra
by artist: Vlastimil Horak
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 7
genre: classical
isrc code: USSJ10813872
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
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92df1bba7f68e9a93aacaa6f3bf2a168030f80cdcd6f6fdc651773a9485da36. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USSJ10813872.
  date published: 2026-07-02T05:09:12Z
audio: Menuetto
  type: AudioObject
  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: Energy
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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)
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Well Tempered Klavier, Book I, No. 22 BWV 867
type: MusicRecording
duration: PT4M29S
duration ms: 269866
explicit: false
by artist: Johann Sebastian Bach
by artist: Christiane Jaccottet
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 3
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: USSJ10813889
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/USSJ10813889
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 0xbec612d4280bb309b472c8c1d2a00f07284b538b02c8684f958f3d520d64a2a3. 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/USSJ10813889.
  date published: 2026-07-08T03:20:19Z
audio: Well Tempered Klavier, Book I, No. 22 BWV 867
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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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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Ave Maria
type: MusicRecording
duration: PT5M54S
duration ms: 354400
explicit: false
by artist: Johann Sebastian Bach
by artist: Charles Gounod
by artist: Caffé Concerto
in album: 100 Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 3
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: USSJ10813898
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
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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
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Concierto De Aranjuez: II. Adagio
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by artist: Slovac Chamber Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:51:49Z
audio: Concierto De Aranjuez: II. Adagio
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Dolly, Op. 56: I. Berceuse
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by artist: Klaus Jäckle
by artist: Elisabeth Riessbeck
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T03:35:13Z
audio: Dolly, Op. 56: I. Berceuse
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The Four Seasons: Concerto No. 1 In E Major, Op. 8, RV 269, "Spring": I. Allegro (Danza Pastorale)
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by artist: Musici di San Marco
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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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Kinderszenen, Op. 15: No. 7. Traumerei
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Kinderszenen, Op. 15: No. 7. Traumerei
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Ballade No. 1 In G Minor, Op. 23
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duration: PT9M14S
duration ms: 554093
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by artist: Makiko Takeda
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popularity: 5
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Ballade No. 1 In G Minor, Op. 23
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Peer Gynt: Prelude (Morning)
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by artist: Bamberger Philharmoniker
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:09:47Z
audio: Peer Gynt: Prelude (Morning)
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Symphony No. 5 In C Minor, Op. 67 "Fate": II. Andante Con Moto
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subject of: OpenTimestamps Proof of Existence
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Piano Concerto No. 20 In D Minor K. 466: II. Romanze (Excerpt)
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duration ms: 526173
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by artist: Mozart Festival Orchestra
by artist: Alberto Lizzio
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popularity: 3
genre: classical
genre: classical-era
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T12:45:34Z
audio: Piano Concerto No. 20 In D Minor K. 466: II. Romanze (Excerpt)
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Cantata No. 147: Jesu, Joy Of Man's Desiring
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T13:21:01Z
audio: Cantata No. 147: Jesu, Joy Of Man's Desiring
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Adagio in G Minor
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by artist: Latvian Philharmonic Chamber Orchestra
by artist: Ilmar Lapinsch
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:18:56Z
audio: Adagio in G Minor
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Carnival Of The Animals: The Swan
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Carnival Of The Animals: The Swan
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Valse Triste, Op 44
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Valse Triste, Op 44
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Liebestraum No. 3 In A-Flat Major, Op. 62
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subject of: OpenTimestamps Proof of Existence
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Flute And Harp Concerto In C K. 299 / 297C: II. Andantino
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  date published: 2026-07-30T06:39:12Z
audio: Flute And Harp Concerto In C K. 299 / 297C: II. Andantino
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Treasure WaltzOp. 418
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by artist: Carl Michalski
by artist: Vienna Volksoper Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T12:45:34Z
audio: Treasure WaltzOp. 418
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Piano Concerto No. 1 in B-Flat Minor, Op. 23: II. Andantino semplice - Prestissimo - Tempo I
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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Goldberg Variations BWV 988: Aria
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by artist: Christiane Jaccottet
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popularity: 3
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T03:35:13Z
audio: Goldberg Variations BWV 988: Aria
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Pavane For A Dead Princess
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: Pavane For A Dead Princess
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Bagatelle In A Minor WoO 59 "Fur Elise"
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popularity: 3
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
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audio: Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
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Suite Bergamasque: Clair De Lune
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Serenade For Strings In E Major, Op. 22: I. Moderato
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Clarinet Concerto In A K. 622: II. Adagio
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Violin Concerto In D Major, Op. 35: II. Canzonetta, Andante
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111 Amazing Classical: Music of Love
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A to Z of String Players
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The Great Russian Violinists
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track: Nocturnes, Op. 9: No. 2, Andante in E-Flat Major
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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/SEWDL9750050
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7290a1b57429dfa1b557a1c583a3396c5d5f072a1052126f5b531cc56fdcfb9. 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/SEWDL9750050.
  date published: 2026-07-02T03:55:08Z
audio: Symphony No. 5, Pt. 3: IV. Adagietto
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  additional property: Valence (Positivity)
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Carmen Suite No. 2: II. Habanera
type: MusicRecording
duration: PT2M12S
duration ms: 132533
explicit: false
by artist: Georges Bizet
by artist: David Parry
by artist: London Philharmonic Orchestra
in album: The 99 Most Essential Classics of the Romantic Era
  type: MusicAlbum
  date published: 2005-09-15
genre: classical
genre: opera
isrc code: SEWDL9750024
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/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9750024
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
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 0x706709ae31ad4a967b3d5e38bed8d320c885e131fb5ddfc45718e9df08683f88. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEWDL9750024.
  date published: 2026-06-13T12:47:07Z
audio: Carmen Suite No. 2: II. Habanera
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  additional property: Tempo (BPM)
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    value: 1
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    type: PropertyValue
    value: 5
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  additional property: Energy
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Romeo and Juliet, Fantasy Overture, Op. 64a
type: MusicRecording
duration: PT22M28S
duration ms: 1348186
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Jansug Kakhidze
by artist: Tbilisi Symphony Orchestra
in album: The 99 Most Essential Classics of the Romantic Era
  type: MusicAlbum
  date published: 2005-09-15
isrc code: DEB790301886
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x807a0a003e2e4e6898b84e3d23f0609dcc332ac78251ae73dd934438926fb276
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/DEB790301886
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 0x807a0a003e2e4e6898b84e3d23f0609dcc332ac78251ae73dd934438926fb276. 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/DEB790301886.
  date published: 2026-07-02T03:55:08Z
audio: Romeo and Juliet, Fantasy Overture, Op. 64a
  type: AudioObject
  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: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Suite bergamasque, L. 75: III. Clair de lune
type: MusicRecording
duration: PT5M13S
duration ms: 313906
explicit: false
by artist: Claude Debussy
by artist: Finghin Collins
in album: The 99 Most Essential Classics of the Romantic Era
  type: MusicAlbum
  date published: 2005-09-15
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: SEWDL9750011
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-06-04T16:15:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
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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/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9750011
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 0x37979c0bf811d5a336a04a17d7e142d18e0d2e17ce37e308745366f5877aa3b7. 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/SEWDL9750011.
  date published: 2026-07-07T18:39:05Z
audio: Suite bergamasque, L. 75: III. Clair de lune
  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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    type: PropertyValue
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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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L'Arlesienne Suite No. 1, WD 40: I. Prelude
type: MusicRecording
duration: PT6M53S
duration ms: 413280
explicit: false
by artist: Georges Bizet
by artist: David Parry
by artist: London Philharmonic Orchestra
in album: The 99 Most Essential Classics of the Romantic Era
  type: MusicAlbum
  date published: 2005-09-15
genre: classical
genre: opera
isrc code: SEWDL9750043
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T09:37:56+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/SEWDL9750043
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
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 0x6ef0410a888565f3c5a34c33abccde66797ec6dc85164a4719124062fae16761. 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/SEWDL9750043.
  date published: 2026-06-13T13:32:09Z
audio: L'Arlesienne Suite No. 1, WD 40: I. Prelude
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.258
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.856
  additional property: Liveness
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  additional property: Valence (Positivity)
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    value: 0.048
  additional property: Loudness (dB)
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    value: -19.673
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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My Fatherland, JB 1:112 "Ma Vlast": II. Vltava (The Moldau River)
type: MusicRecording
duration: PT11M26S
duration ms: 686800
explicit: false
by artist: Bedřich Smetana
by artist: David Parry
by artist: London Philharmonic Orchestra
in album: The 99 Most Essential Classics of the Romantic Era
  type: MusicAlbum
  date published: 2005-09-15
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
isrc code: SEWDL9750031
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T16:22:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9750031
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
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 0xc172358ed8e33068627a0cb864d57813736e8617adccced05c8946709a03f5a4. 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/SEWDL9750031.
  date published: 2026-06-13T13:32:09Z
audio: My Fatherland, JB 1:112 "Ma Vlast": II. Vltava (The Moldau River)
  type: AudioObject
  additional property: Tempo (BPM)
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  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: 5
  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
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.792
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.055
  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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Les Préludes, S. 97
type: MusicRecording
duration: PT16M17S
duration ms: 977506
explicit: false
by artist: Franz Liszt
by artist: Rafael Frühbeck de Burgos
by artist: Berlin Radio Symphony Orchestra
by artist: Rundfunk-Sinfonieorchester Berlin
in album: The 99 Most Essential Classics of the Romantic Era
  type: MusicAlbum
  date published: 2005-09-15
popularity: 8
genre: classical
genre: late-romantic-era
isrc code: SEAEL9917010
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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  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/SEAEL9917010
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 0x8d6a0cf3ca7fc46b0ee16b500381096a0dba5d5395d509ead47cd1ccfce1a2b7. 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/SEAEL9917010.
  date published: 2026-07-02T03:55:08Z
audio: Les Préludes, S. 97
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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: Speechiness
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Pavane pour une infante défunte, M. 19
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duration ms: 398840
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by artist: Arpad Joo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
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Ave Maria, CG 89a
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duration ms: 154400
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by artist: London Philharmonic Choir
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
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Kinderszenen, Op. 15: VII. Träumerei
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by artist: Roland Pöntinen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
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Radetzky March, Op. 228
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duration ms: 185840
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by artist: David Parry
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Radetzky March, Op. 228
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14 Romances, Op. 34: XIV. Vocalise
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duration ms: 350853
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by artist: Pieter Schoeman
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: 14 Romances, Op. 34: XIV. Vocalise
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Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
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duration: PT8M8S
duration ms: 488026
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by artist: Lev Markiz
by artist: Torleif Thedéen
by artist: Malmö Symphony Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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subject of: OpenTimestamps Proof of Existence
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Peer Gynt Suite No. 1, Op. 46: IV. In the Hall of the Mountain King
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Peer Gynt, Op. 23, Act III: No. 13, Solveig's Song
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  date published: 2026-07-02T03:30:09Z
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Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T15:39:05Z
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Slavonic Dances, Op. 72: No. 2, Dumka (Allegretto grazioso)
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subject of: OpenTimestamps Proof of Existence
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Violin Concerto in D Major, Op. 35: III. Finale (Allegro vivacissimo)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:09:47Z
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Ellen's Chants, Op. 56: III. Ave Maria
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  date published: 2026-07-30T05:21:45Z
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Two Elegiac Melodies, Op. 34: II. The Last Spring
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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: 2026-07-07T11:43:09Z
audio: Two Elegiac Melodies, Op. 34: II. The Last Spring
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Kol Nidrei for Cello and Orchestra, Op. 47
type: MusicRecording
duration: PT9M49S
duration ms: 589733
explicit: false
by artist: Max Bruch
by artist: Michael Boder
by artist: Martin Ostertag
by artist: SWR Symphony Orchestra
in album: The 99 Most Essential Classics of the Romantic Era
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  date published: 2005-09-15
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-07-30T00:53:20Z
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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8f4ca5a34d4a5c663a54a9ea69d5103d1a1b36f46337ca01fb0bf1a616c9d8. 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/SEWDL0506701.
  date published: 2026-07-30T00:53:20Z
audio: Kol Nidrei for Cello and Orchestra, Op. 47
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Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso - Allegro con spirito
type: MusicRecording
duration: PT20M29S
duration ms: 1229293
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: James Judd
by artist: John Lill
by artist: London Symphony Orchestra
in album: The 99 Most Essential Classics of the Romantic Era
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  date published: 2005-09-15
isrc code: SEWDL0758601
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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: 2026-07-07T16:07:00Z
audio: Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso - Allegro con spirito
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Pavane, Op. 50
type: MusicRecording
duration: PT5M7S
duration ms: 307480
explicit: false
by artist: Gabriel Fauré
by artist: David Parry
by artist: London Philharmonic Orchestra
in album: The 99 Most Essential Classics of the Romantic Era
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  date published: 2005-09-15
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9baac788d25cb8d455010730f701f58d6cdff1059b298c870a827a24484cf48. 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/SEWDL9750041.
  date published: 2026-07-07T18:39:05Z
audio: Pavane, Op. 50
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The Nutcracker, Op. 71, Act I: II. March
type: MusicRecording
duration: PT2M27S
duration ms: 147133
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Heribert Beissel
by artist: Bonn Classical Philharmonic
in album: The 99 Most Essential Classics of the Romantic Era
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  date published: 2005-09-15
isrc code: SEWDL0535403
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additional property: OTSVerificationAPI
  type: PropertyValue
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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: 2026-07-08T03:20:19Z
audio: The Nutcracker, Op. 71, Act I: II. March
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The Nutcracker, Op. 71, Act II: XIV. Waltz of the Flowers
type: MusicRecording
duration: PT7M21S
duration ms: 441266
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Heribert Beissel
by artist: Bonn Classical Philharmonic
in album: The 99 Most Essential Classics of the Romantic Era
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  date published: 2005-09-15
isrc code: SEWDL0535419
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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: 2026-07-06T06:56:49Z
audio: The Nutcracker, Op. 71, Act II: XIV. Waltz of the Flowers
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The Nutcracker, Op. 71, Act II: XIId. Trepak (Russian Dance)
type: MusicRecording
duration: PT1M9S
duration ms: 69093
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Heribert Beissel
by artist: Bonn Classical Philharmonic
in album: The 99 Most Essential Classics of the Romantic Era
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  date published: 2005-09-15
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additional property: OTSVerificationAPI
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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
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  date published: 2026-07-08T03:20:19Z
audio: The Nutcracker, Op. 71, Act II: XIId. Trepak (Russian Dance)
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The Nutcracker, Op. 71, Act II: XIVc. Var. 2, Dance of the Sugar-Plum Fairy
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by artist: Heribert Beissel
by artist: Bonn Classical Philharmonic
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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: 2026-07-07T14:18:56Z
audio: The Nutcracker, Op. 71, Act II: XIVc. Var. 2, Dance of the Sugar-Plum Fairy
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5 Morceaux de fantasie, Op. 3: No. 2, Prélude in C-Sharp Minor "The Bells of Moscow"
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duration: PT4M14S
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by artist: Tomislav Bavnov
in album: The 99 Most Essential Classics of the Romantic Era
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genre: classical
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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: 5 Morceaux de fantasie, Op. 3: No. 2, Prélude in C-Sharp Minor "The Bells of Moscow"
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21 Hungarian Dances, WoO 1: No. 5, Allegro in F-Sharp Minor
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duration: PT2M38S
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by artist: Johannes Brahms
by artist: David Parry
by artist: London Philharmonic Orchestra
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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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  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: 2026-06-13T12:47:07Z
audio: 21 Hungarian Dances, WoO 1: No. 5, Allegro in F-Sharp Minor
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The Tale of Tsar Saltan, Act III: Flight of the Bumblebee
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duration: PT1M34S
duration ms: 94426
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by artist: Nikolai Rimsky-Korsakov
by artist: Alexander Titov
by artist: St. Petersburg Orchestra of the State Hermitage Museum
in album: The 99 Most Essential Classics of the Romantic Era
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genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: avant-garde
genre: russian-romanticism
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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: 2026-07-30T15:42:38Z
audio: The Tale of Tsar Saltan, Act III: Flight of the Bumblebee
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Violin Concerto in E Minor, Op. 64: I. Allegro molto appassionato
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duration: PT13M7S
duration ms: 787866
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by artist: Felix Mendelssohn
by artist: Jaime Laredo
by artist: Scottish Chamber Orchestra
in album: The 99 Most Essential Classics of the Romantic Era
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  date published: 2005-09-15
genre: classical
genre: early-romantic-era
genre: german-romanticism
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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: 2026-07-29T22:48:59Z
audio: Violin Concerto in E Minor, Op. 64: I. Allegro molto appassionato
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Song Without Words in D Major, Op. 109
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duration: PT4M45S
duration ms: 285026
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by artist: Steven Isserlis
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genre: classical
genre: early-romantic-era
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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: 2026-07-29T11:30:20Z