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  track: Ainsi la nuit: I. Libre et souple – Nocturne
  track: Ainsi la nuit: II. Parenthèse I – Miroir d'espace
  track: String Quartet in F Major, M. 35: I. Allegro moderato, très doux
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Ainsi la nuit: I. Libre et souple – Nocturne
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Ainsi la nuit: II. Parenthèse I – Miroir d'espace
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String Quartet in F Major, M. 35: I. Allegro moderato, très doux
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Brahms, Schubert & Liszt: Piano Works
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track: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
track: Piano Concerto No. 1 in F-Sharp Minor, Op. 1: III. Allegro vivace
track: Piano Concerto No. 2 in C Minor, Op. 18: III. Allegro scherzando
track: Piano Concerto No. 4 in G Minor, Op. 40: I. Allegro vivace
track: Piano Concerto No. 3 in D Minor, Op. 30: I. Allegro ma non tanto
track: Piano Concerto No. 4 in G Minor, Op. 40: II. Largo
track: Piano Concerto No. 3 in D Minor, Op. 30: II. Intermezzo. Adagio –
track: Piano Concerto No. 4 in G Minor, Op. 40: III. Allegro vivace
track: Piano Concerto No. 3 in D Minor, Op. 30: III. Finale. Alla breve
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 6. L’istesso tempo
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 7. Meno messo, a tempo moderato
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 8. Tempo I
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 11. Moderato
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 12. Tempo di minuetto
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 14. L’istesso tempo
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 15. Più vivo scherzando
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 16. Allegretto
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 18. Andante cantabile "The 18th Variation"
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 20. Un poco più vivo
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 22. Un poco più vivo (alla breve)
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 23. L’istesso tempo
track: Rhapsody on a Theme of Paganini, Op. 43: Var. 24. A tempo un poco meno messo

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Piano Concerto No. 4 in G Minor, Op. 40: I. Allegro vivace
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subject of: OpenTimestamps Proof of Existence
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Piano Concerto No. 3 in D Minor, Op. 30: I. Allegro ma non tanto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
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Piano Concerto No. 4 in G Minor, Op. 40: II. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:13Z
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Piano Concerto No. 3 in D Minor, Op. 30: II. Intermezzo. Adagio –
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:51:48Z
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Piano Concerto No. 4 in G Minor, Op. 40: III. Allegro vivace
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subject of: OpenTimestamps Proof of Existence
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Piano Concerto No. 3 in D Minor, Op. 30: III. Finale. Alla breve
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Rhapsody on a Theme of Paganini, Op. 43: Var. 6. L’istesso tempo
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duration: PT1M5S
duration ms: 65532
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 4
genre: classical
genre: classical-piano
isrc code: GBAJY0450114
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cdd1d198e1adb33eed760ec16ad49227af62d89cb132e50411263f508dc10f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBAJY0450114.
  date published: 2026-07-31T05:17:02Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 6. L’istesso tempo
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Rhapsody on a Theme of Paganini, Op. 43: Var. 7. Meno messo, a tempo moderato
type: MusicRecording
duration: PT1M5S
duration ms: 65893
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450115
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322fba9599443f3cf332159bf40f8036deb917ae1fb216633bf6f0caf3b3bd55. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBAJY0450115.
  date published: 2026-07-31T05:17:02Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 7. Meno messo, a tempo moderato
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Rhapsody on a Theme of Paganini, Op. 43: Var. 8. Tempo I
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duration: PT0M32S
duration ms: 32173
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 4
genre: classical
genre: classical-piano
isrc code: GBAJY0450116
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: 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: 2026-07-31T22:27:44Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 8. Tempo I
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Rhapsody on a Theme of Paganini, Op. 43: Var. 11. Moderato
type: MusicRecording
duration: PT1M26S
duration ms: 86786
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450119
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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 0xad32376e6822389255882957d58d54bde62f1b54370a8e4653e11d095abc786d. 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/GBAJY0450119.
  date published: 2026-07-08T03:20:19Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 11. Moderato
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Rhapsody on a Theme of Paganini, Op. 43: Var. 12. Tempo di minuetto
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duration: PT1M23S
duration ms: 83706
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450120
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450120
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:48:18Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27eedba63a622263c30bb37eb92bfd70565bd1a074c89b83b264c924401de5d. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450120.
  date published: 2026-07-31T05:48:18Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 12. Tempo di minuetto
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  additional property: Acousticness
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Rhapsody on a Theme of Paganini, Op. 43: Var. 14. L’istesso tempo
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duration: PT0M42S
duration ms: 42520
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450122
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: 2026-07-31T15:20:15Z
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 0xea6f29ef7644ab82f1882c24f243039a4bdafe74d423e6b714ab98381069c365. 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/GBAJY0450122.
  date published: 2026-07-31T15:20:15Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 14. L’istesso tempo
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Rhapsody on a Theme of Paganini, Op. 43: Var. 15. Più vivo scherzando
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duration ms: 69306
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
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  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450123
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: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450123
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 0x93d59e5e528b72d145593e24dc60f27c4f3be7574b796be9a01231dc4ae662cc. 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/GBAJY0450123.
  date published: 2026-07-08T03:20:19Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 15. Più vivo scherzando
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 106.275
  additional property: Musical Key
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    value: 7
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.315
  additional property: Energy
    type: PropertyValue
    value: 0.032
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.954
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.514
  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.979
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Rhapsody on a Theme of Paganini, Op. 43: Var. 16. Allegretto
type: MusicRecording
duration: PT1M40S
duration ms: 100186
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 4
genre: classical
genre: classical-piano
isrc code: GBAJY0450124
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T18:44:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd757b48881584b3da0d01c48d8dca8599a89585f96fafa7e6d4e5c249eb34cd5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960455
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450124
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:13Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd757b48881584b3da0d01c48d8dca8599a89585f96fafa7e6d4e5c249eb34cd5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450124.
  date published: 2026-07-31T19:53:13Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 16. Allegretto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.249
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.221
  additional property: Energy
    type: PropertyValue
    value: 0.004
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.082
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.066
  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.65
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rhapsody on a Theme of Paganini, Op. 43: Var. 18. Andante cantabile "The 18th Variation"
type: MusicRecording
duration: PT2M57S
duration ms: 177240
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Stephen Hough
by artist: Dallas Symphony Orchestra
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 5
genre: classical
genre: classical-piano
isrc code: GBAJY0450126
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T15:20:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xab3e6f5394bd9d0c21433209a9713dd47bdc5d992383a3d4794e33a1b3639e34
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450126
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3e6f5394bd9d0c21433209a9713dd47bdc5d992383a3d4794e33a1b3639e34. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450126.
  date published: 2026-07-30T15:42:38Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 18. Andante cantabile "The 18th Variation"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 91.484
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.213
  additional property: Energy
    type: PropertyValue
    value: 0.015
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.974
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.95
  additional property: Liveness
    type: PropertyValue
    value: 0.097
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.05
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.365
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rhapsody on a Theme of Paganini, Op. 43: Var. 20. Un poco più vivo
type: MusicRecording
duration: PT0M34S
duration ms: 34426
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Dallas Symphony Orchestra
by artist: Stephen Hough
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450128
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T18:57:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa4f71d08db3e162f08c2d4c0df68671643bdfb84fecb29d5699f0d656f1b8f07
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450128
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f71d08db3e162f08c2d4c0df68671643bdfb84fecb29d5699f0d656f1b8f07. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450128.
  date published: 2026-07-08T03:22:41Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 20. Un poco più vivo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.08
  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: 0.514
  additional property: Energy
    type: PropertyValue
    value: 0.046
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.944
  additional property: Liveness
    type: PropertyValue
    value: 0.371
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.293
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.249
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Rhapsody on a Theme of Paganini, Op. 43: Var. 22. Un poco più vivo (alla breve)
type: MusicRecording
duration: PT1M37S
duration ms: 97266
explicit: false
by artist: Sergei Rachmaninoff
by artist: Dallas Symphony Orchestra
by artist: Andrew Litton
by artist: Stephen Hough
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450130
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T19:50:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x537b4e63aad1d73a5eb898f881f1d514fd261e05c7f24db83ef07fcb58db086e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960459
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960459
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450130
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T20:22:46Z
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 0x537b4e63aad1d73a5eb898f881f1d514fd261e05c7f24db83ef07fcb58db086e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBAJY0450130.
  date published: 2026-07-31T20:22:46Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 22. Un poco più vivo (alla breve)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.52
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.373
  additional property: Energy
    type: PropertyValue
    value: 0.182
  additional property: Speechiness
    type: PropertyValue
    value: 0.029
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.928
  additional property: Liveness
    type: PropertyValue
    value: 0.224
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.171
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.736
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rhapsody on a Theme of Paganini, Op. 43: Var. 23. L’istesso tempo
type: MusicRecording
duration: PT0M50S
duration ms: 50760
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Dallas Symphony Orchestra
by artist: Stephen Hough
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450131
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T15:20:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1718a6fde05ef7cc7070e156c8f553aeba2e2966c1ab2342a5ce2ce374590b70
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960422
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960422
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450131
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:27:29Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1718a6fde05ef7cc7070e156c8f553aeba2e2966c1ab2342a5ce2ce374590b70. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/GBAJY0450131.
  date published: 2026-07-31T15:27:29Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 23. L’istesso tempo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.006
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.492
  additional property: Energy
    type: PropertyValue
    value: 0.247
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.461
  additional property: Liveness
    type: PropertyValue
    value: 0.213
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.276
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.572
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Rhapsody on a Theme of Paganini, Op. 43: Var. 24. A tempo un poco meno messo
type: MusicRecording
duration: PT1M23S
duration ms: 83693
explicit: false
by artist: Sergei Rachmaninoff
by artist: Andrew Litton
by artist: Dallas Symphony Orchestra
by artist: Stephen Hough
in album: Rachmaninoff: Piano Concertos 1-4; Paganini Rhapsody
  type: MusicAlbum
  date published: 2004-10-01
popularity: 3
genre: classical
genre: classical-piano
isrc code: GBAJY0450132
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T18:49:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7faa98d4f052fcf24f1528b9842c9efbfac05328acb961b1329fa7157f0afe55
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960455
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450132
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:13Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faa98d4f052fcf24f1528b9842c9efbfac05328acb961b1329fa7157f0afe55. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0450132.
  date published: 2026-07-31T19:53:13Z
audio: Rhapsody on a Theme of Paganini, Op. 43: Var. 24. A tempo un poco meno messo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.94
  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: 0.338
  additional property: Energy
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    date published: 2026-07-08T03:20:19Z
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OpenTimestamps Proof of Existence
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Piano Quintet in E-Flat Major, Op. 16: III. Rondo. Allegro ma non troppo
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Mozart: Piano Concerto No. 21 in C Major, K. 467: II. Andante
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
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Quintet in E-Flat Major, KV452: III. Allegretto
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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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Quintet in E-Flat Major, KV452: II. Larghetto
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subject of: OpenTimestamps Proof of Existence
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Piano Concerto No. 21 in C Major, K. 467: II. Andante 'Elvira Madigan'
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subject of: OpenTimestamps Proof of Existence
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audio: Piano Concerto No. 21 in C Major, K. 467: II. Andante 'Elvira Madigan'
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Waltz No. 12 in F Minor, Op. 70 No. 2
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Waltz No. 12 in F Minor, Op. 70 No. 2
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Night Piece (Notturno) (1963)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Night Piece (Notturno) (1963)
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Quintet in E-Flat Major, KV452: I. Largo – Allegro moderato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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Lyric Pieces Book 1, Op. 12: No. 1, Arietta
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T10:20:10Z
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Fantasie in C Major, Op. 17: III. Langsam getragen - Durchweg leise zu halten
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T01:32:48Z
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Lyric Pieces Book 7, Op. 62: No. 1, Sylph
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subject of: OpenTimestamps Proof of Existence
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Carnaval, Op. 9: XI. Chiarina. Passionato
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