Royal Opera House Orchestra at Covent Garden
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genre: opera
popularity: 3
followers: 50
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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: 2026-06-16T20:07:57Z
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album: Wagner: Parsifal
  type: MusicAlbum
  date published: 2014-10-01
album: Jussi Björling Collection, Vol. 4: Opera Arias & Duets (Recordings 1945-1951)
  type: MusicAlbum
  date published: 2004-08-05
album: Lauritz Melchior, The King Size Hero, Vol. 7 (Recordings 1929-1932)
  type: MusicAlbum
  date published: 2014-06-01
album: Lauritz Melchior, The King Size Hero, Vol. 6 (Recordings 1929-1941)
  type: MusicAlbum
  date published: 2014-06-01
album: Lauritz Melchior, The King Size Hero, Vol. 5 (Recordings 1925-1938)
  type: MusicAlbum
  date published: 2014-06-01
album: Richard Strauss: Der Rosenkavalier, Op. 59, TrV 227 (Live)
  type: MusicAlbum
  date published: 2014-10-28
album: Gluck: Alceste, Wq. 44 (Sung in French) [Live Recordings 1981]
  type: MusicAlbum
  date published: 2014-10-28
album: Verdi: La Traviata (Live)
  type: MusicAlbum
  date published: 2014-11-01
  track: La traviata: Act II: Amami, Alfredo (Violetta, Alfredo)
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    by artist: Giuseppe Verdi
    by artist: Maria Callas
    by artist: Cesare Valletti
    by artist: Royal Opera House Orchestra at Covent Garden
    by artist: Nicola Rescigno
    in album: Verdi: La Traviata (Live)
      type: MusicAlbum
      date published: 2014-11-01
    genre: classical
    genre: opera
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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: 2026-07-31T10:20:10Z
    audio: La traviata: Act II: Amami, Alfredo (Violetta, Alfredo)
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