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type: MusicGroup
popularity: 16
followers: 116
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-15T04:47:56Z
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track: Rachmaninov: 6 Morceaux, Op. 11: No. 1, Barcarolle
track: Rachmaninov: 2 Pieces for Piano Six-Hands: No. 2, Romance
track: Rachmaninov: 2 Pieces for Piano Six-Hands: No. 1, Waltz
track: Piano Concerto No. 1 in E Minor, Op. 11: Romanze: Larghetto
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  by artist: Frédéric Chopin
  by artist: Dmitri Kitayenko
  by artist: Aleksandar Madzar
  by artist: Radio-Sinfonie-Orchester Frankfurt
  in album: Adagio
    type: MusicAlbum
    date published: 2009-04-14
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df225caba12d278c11220d4658e573c9cabd1047399fed282766628ee3f0d0a. 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/GBARU9700301.
    date published: 2026-07-08T03:20:19Z
  audio: Piano Concerto No. 1 in E Minor, Op. 11: Romanze: Larghetto
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Rachmaninov: 6 Morceaux, Op. 11: No. 1, Barcarolle
type: MusicRecording
duration: PT6M18S
duration ms: 378933
explicit: false
by artist: Sergei Rachmaninoff
by artist: Alexandre Tharaud
by artist: Aleksandar Madzar
in album: Four Hands
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  date published: 2024-05-03
genre: classical
genre: classical-piano
isrc code: GBAYC2302553
additional property: CopyrightID
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Rachmaninov: 6 Morceaux, Op. 11: No. 1, Barcarolle
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Rachmaninov: 2 Pieces for Piano Six-Hands: No. 2, Romance
type: MusicRecording
duration: PT4M34S
duration ms: 274173
explicit: false
by artist: Sergei Rachmaninoff
by artist: Alexandre Tharaud
by artist: Alexander Melnikov
by artist: Aleksandar Madzar
in album: Tharaud plays Rachmaninov
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  date published: 2016-10-21
genre: classical
genre: classical-piano
isrc code: GBAYC1600516
additional property: CopyrightID
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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  date published: 2026-07-02T03:55:08Z
audio: Rachmaninov: 2 Pieces for Piano Six-Hands: No. 2, Romance
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Rachmaninov: 2 Pieces for Piano Six-Hands: No. 1, Waltz
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duration: PT1M18S
duration ms: 78626
explicit: false
by artist: Sergei Rachmaninoff
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by artist: Alexander Melnikov
by artist: Aleksandar Madzar
in album: Tharaud plays Rachmaninov
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  date published: 2016-10-21
genre: classical
genre: classical-piano
isrc code: GBAYC1600515
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Rachmaninov: 2 Pieces for Piano Six-Hands: No. 1, Waltz
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