Jacques Kauffmann
type: MusicGroup
genre: gregorian chant
popularity: 5
followers: 201
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57af0d0e7a4fc71053abf473e5930944b3e35689905722a2345629097b91a8b3. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3dcd2f7-aac4-484e-8515-37bcb4386cd6.json and https://artists.proofprofile.net/proofs/artist/a3dcd2f7-aac4-484e-8515-37bcb4386cd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
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album: Jacques Kauffmann : 21 Noëls pour Orgue
  type: MusicAlbum
  date published: 1997-11-12
album: André Fleury : œuvres pour orgue & chant grégorien, Vol. 2
  type: MusicAlbum
  date published: 2003-10-01
album: Easter: 20 Masterpieces for Organ
  type: MusicAlbum
  date published: 2007-06-23
album: Langlais : The Gregorian Inspiration
  type: MusicAlbum
  date published: 2008-05-17
album: Couleurs de l'orgue néo-baroque
  type: MusicAlbum
  date published: 2011-05-24
album: Boehm & Bach: Couleurs de l'orgue néo-baroque
  type: MusicAlbum
  date published: 2011-05-24
album: L'orgue chante Noël
  type: MusicAlbum
  date published: 2012-11-07
album: 24 Préludes pour orgue
  type: MusicAlbum
  date published: 2013-07-01
album: Bach, Nibelle, Plé, Fleury, Litaize, & Kauffman: 20 Chefs-d'oeuvre pour orgue
  type: MusicAlbum
  date published: 2013-08-01
album: Bach, Nibelle, Plé, Fleury, Litaize, & Kauffman: 20 Chefs-d'oeuvre pour orgue
  type: MusicAlbum
  date published: 2013-08-01
album: L'Essor de l'Orgue en Europe de la Renaissance au Baroque
  type: MusicAlbum
  date published: 2013-11-01
album: Les Grandes Orgues de Gérardmer
  type: MusicAlbum
  date published: 2013-11-01
album: Les Grandes Orgues de Gérardmer
  type: MusicAlbum
  date published: 2013-11-01
album: L'Essor de l'Orgue en Europe de la Renaissance au Baroque
  type: MusicAlbum
  date published: 2013-11-01
album: Sur les bourdons et les flûtes
  type: MusicAlbum
  date published: 2014-06-23
album: Cathédrale d'Auxerre 800 anniversaire
  type: MusicAlbum
  date published: 2015-11-06
album: Cathédrale d'Auxerre 800 anniversaire
  type: MusicAlbum
  date published: 2015-11-06