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genre: opera
popularity: 2
followers: 2
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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 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: La Périchole, Acte I: Finale. Oh ! là ! hé !... holà ! de là-bas
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  by artist: Jacques Offenbach
  by artist: Les Musiciens du Louvre
  by artist: Marc Minkowski
  by artist: Alexandre Duhamel
  by artist: Marc Mauillon
  by artist: Olivia Doray
  by artist: Julie Pasturaud
  by artist: Mélodie Ruvio
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  by artist: François Pardailhé
  by artist: Chœur de l'Opéra National de Bordeaux
  in album: Offenbach: La Périchole
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    date published: 2019-06-14
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
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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: 2026-07-30T22:27:30Z
  audio: La Périchole, Acte I: Finale. Oh ! là ! hé !... holà ! de là-bas
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track: La Périchole, Acte I: Suite du Finale. Mon Dieu !... que de cérémonie !...
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  by artist: Jacques Offenbach
  by artist: Les Musiciens du Louvre
  by artist: Marc Minkowski
  by artist: Alexandre Duhamel
  by artist: Marc Mauillon
  by artist: Olivia Doray
  by artist: Julie Pasturaud
  by artist: Mélodie Ruvio
  by artist: Enguerrand de Hys
  by artist: François Pardailhé
  by artist: Chœur de l'Opéra National de Bordeaux
  in album: Offenbach: La Périchole
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    date published: 2019-06-14
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
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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: La Périchole, Acte I: Suite du Finale. Mon Dieu !... que de cérémonie !...
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track: Richard Cœur de lion, Acte I: Richard Cœur de Lion, Act I Scenes 2 and 3: Air. Ô Richard, Ô mon Roi ! (Blondel, Williams, Guillot)
track: Richard Cœur de lion, Acte I: Richard Cœur de Lion, Act I Scenes 3 to 6: Morceau d'ensemble. Quoi, de la part du gouverneur (Williams, Guillot, Blondel, Laurette, Antonio)

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Richard Cœur de lion, Acte I: Richard Cœur de Lion, Act I Scenes 2 and 3: Air. Ô Richard, Ô mon Roi ! (Blondel, Williams, Guillot)
type: MusicRecording
duration: PT3M9S
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by artist: André-Ernest-Modeste Grétry
by artist: Herve Niquet
by artist: Le Concert Spirituel
by artist: Enguerrand de Hys
by artist: Geoffroy Buffière
by artist: François Pardailhé
in album: Grétry: Richard Cœur de Lion
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  date published: 2020-09-25
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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: 2026-07-30T15:42:38Z
audio: Richard Cœur de lion, Acte I: Richard Cœur de Lion, Act I Scenes 2 and 3: Air. Ô Richard, Ô mon Roi ! (Blondel, Williams, Guillot)
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Richard Cœur de lion, Acte I: Richard Cœur de Lion, Act I Scenes 3 to 6: Morceau d'ensemble. Quoi, de la part du gouverneur (Williams, Guillot, Blondel, Laurette, Antonio)
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explicit: false
by artist: André-Ernest-Modeste Grétry
by artist: Herve Niquet
by artist: Le Concert Spirituel
by artist: Geoffroy Buffière
by artist: François Pardailhé
by artist: Enguerrand de Hys
by artist: Melody Louledjian
by artist: Marie Perbost
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  date published: 2020-09-25
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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: 2026-07-31T23:51:35Z
audio: Richard Cœur de lion, Acte I: Richard Cœur de Lion, Act I Scenes 3 to 6: Morceau d'ensemble. Quoi, de la part du gouverneur (Williams, Guillot, Blondel, Laurette, Antonio)
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