Andrey Baranov
type: MusicGroup
genre: chamber music
popularity: 8
followers: 233
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-21T07:29:20Z
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album: Tchaikovsky: The Seasons, Op. 37a: No. 10, Autumn Song (Arr. for Piano Trio by Louis Eaton)
  type: MusicAlbum
  date published: 2024-06-07
track: 12 Romances, Op. 21: No. 7, How Fair this Spot (arr. for piano trio by Alexander Panfilov)
  type: MusicRecording
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  by artist: Sergei Rachmaninoff
  by artist: Christoph Croisé
  by artist: Andrey Baranov
  by artist: Alexander Panfilov
  in album: Rachmaninoff: Piano Trios Nos. 1 & 2 & Romances Opp. 21 & 23
    type: MusicAlbum
    date published: 2024-06-21
  genre: classical
  genre: classical-piano
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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: 2026-07-22T17:27:20Z
  audio: 12 Romances, Op. 21: No. 7, How Fair this Spot (arr. for piano trio by Alexander Panfilov)
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