Gérard Calvi
type: MusicGroup
description: Gérard Calvi (born Grégoire Krettly; 26 July 1922 – 20 February 2015) was a French composer. Interested in music from an early age, Calvi's first composing work was for the French production The Patr
popularity: 28
followers: 767
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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
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  date published: 2026-06-12T21:20:00Z
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album: Le grand chef
  type: MusicAlbum
  date published: 1959
album: La Belle Américaine
  type: MusicAlbum
  date published: 1961
album: En compagnie de Max Linder
  type: MusicAlbum
  date published: 1963
album: En compagnie de Max Linder
  type: MusicAlbum
  date published: 1963
album: Carambolages (Original movie soundtrack)
  type: MusicAlbum
  date published: 1963
album: Carambolages
  type: MusicAlbum
  date published: 1963
album: Carambolages
  type: MusicAlbum
  date published: 1963
album: Carambolages – EP
  type: MusicAlbum
  date published: 1963-01-01
album: La tulipe noire et autres musiques de films (Original Movie Soundtracks) – EP
  type: MusicAlbum
  date published: 1964-01-01
album: Le petit baigneur (Bande originale du film)
  type: MusicAlbum
  date published: 1968-03-22
album: En compagnie de Max Linder
  type: MusicAlbum
  date published: 2016-02-15
album: La belle Américaine – EP
  type: MusicAlbum
  date published: 2016-03-01
album: Carambolages (Original Movie Soundtrack) - Single
  type: MusicAlbum
  date published: 2016-08-10
track: Vacances (Holiday Time)
track: Monsieur cinéma

Vacances (Holiday Time)
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duration: PT3M17S
duration ms: 197133
explicit: false
by artist: Gérard Calvi
by artist: Gerard Calvi And His Orchestra
in album: The Golden Age of Light Music: Picking Strings
  type: MusicAlbum
  date published: 2009-04-01
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Vacances (Holiday Time)
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  additional property: Tempo (BPM)
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  additional property: Time Signature
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  additional property: Danceability
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Monsieur cinéma
type: MusicRecording
duration: PT2M21S
duration ms: 141600
explicit: false
by artist: Gérard Calvi
in album: Les Télétubes, Vol. 2 (Les meilleurs génériques de l'histoire de la télévision)
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  date published: 1993-04-05
popularity: 11
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  date published: 2026-07-22T19:09:49Z
audio: Monsieur cinéma
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  additional property: Key Name
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    value: C
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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