Gabriel Keller
type: MusicGroup
genre: progressive rock
description: Gabriel Keller (born 12 August 1947) is a French diplomat and teacher. Biography He was born in Paris, France. Keller earned a history professor agrégé degree in 1972 at Paris West University Nan
popularity: 2
followers: 255
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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
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  date published: 2026-06-17T08:11:48Z
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album: Za Sy Za
  type: MusicAlbum
  date published: 2021-01-04
album: Together
  type: MusicAlbum
  date published: 2021-03-05
album: Train to Resolution
  type: MusicAlbum
  date published: 2021-10-08
album: Nothing Human
  type: MusicAlbum
  date published: 2021-11-26
album: Melancholia
  type: MusicAlbum
  date published: 2022-02-25
album: Clair obscur
  type: MusicAlbum
  date published: 2022-03-19
album: The Letter, Pt. 1
  type: MusicAlbum
  date published: 2023-09-22
album: The Letter (Acoustic)
  type: MusicAlbum
  date published: 2023-10-06
album: Time (Acoustic)
  type: MusicAlbum
  date published: 2023-10-13
album: Poussières Eternelles
  type: MusicAlbum
  date published: 2023-10-20
album: Trio
  type: MusicAlbum
  date published: 2023-10-27
album: Tumulte / The Letter (Live Session)
  type: MusicAlbum
  date published: 2024-03-15
album: The Guns Are Approaching
  type: MusicAlbum
  date published: 2024-04-12
album: Change
  type: MusicAlbum
  date published: 2024-05-17
album: My Son (Live Session)
  type: MusicAlbum
  date published: 2024-06-07
album: Hope Despite Everything
  type: MusicAlbum
  date published: 2024-06-22
album: Le chant du cygne (Live)
  type: MusicAlbum
  date published: 2025-03-09
album: Live - La Rotonde
  type: MusicAlbum
  date published: 2025-06-27
album: Soleil d'automne
  type: MusicAlbum
  date published: 2025-09-19
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    by artist: Gabriel Keller
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      date published: 2025-09-19
    genre: progressive rock
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      date published: 2026-07-05T10:01:46Z
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