Jean-François Jenny-Clark
type: MusicGroup
genre: free jazz
genre: french jazz
description: Jean-François "J.F." Jenny-Clark (12 July 1944 in Toulouse, France – 6 October 1998 in Paris) was a French double bass player. He was estimated as one of the most important bass players of European ja
popularity: 6
followers: 221
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x709287148df8a0d29cace9d6d3924f87ebdd3009b45dad781a1367db927e9cb8
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3bd84fc4-c13e-467b-a117-eec55cc9e7e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3bd84fc4-c13e-467b-a117-eec55cc9e7e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3bd84fc4-c13e-467b-a117-eec55cc9e7e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x709287148df8a0d29cace9d6d3924f87ebdd3009b45dad781a1367db927e9cb8","name":"Jean-François Jenny-Clark","registered_at":"2026-06-16T10:24:39Z","symbol":"NIM1022545","token_address":"0x8864a0b9eab6d5330da8a3ab10e3d01c27a615cf","type":"artist","uuid":"3bd84fc4-c13e-467b-a117-eec55cc9e7e9"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709287148df8a0d29cace9d6d3924f87ebdd3009b45dad781a1367db927e9cb8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bd84fc4-c13e-467b-a117-eec55cc9e7e9.json and https://artists.proofprofile.net/proofs/artist/3bd84fc4-c13e-467b-a117-eec55cc9e7e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x709287148df8a0d29cace9d6d3924f87ebdd3009b45dad781a1367db927e9cb8","name":"Jean-François Jenny-Clark","registered_at":"2026-06-16T10:24:39Z","symbol":"NIM1022545","token_address":"0x8864a0b9eab6d5330da8a3ab10e3d01c27a615cf","type":"artist","uuid":"3bd84fc4-c13e-467b-a117-eec55cc9e7e9"}
album: Solo
  type: MusicAlbum
  date published: 2003