Jacques Coursil
type: MusicGroup
genre: free jazz
description: Jacques Coursil (March 31, 1938 – June 26, 2020) was a French composer, jazz trumpeter, scholar, and professor of literature, linguistics, and philosophy. Early life Coursil was born in Paris, France
popularity: 4
followers: 1090
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x603ce62691f8b3d5663e99069142550e170473f1db2f978c61d1fbf7f82d6aea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/90cbb3f9-6d1f-4f57-82e7-7fa0a3a7761b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/90cbb3f9-6d1f-4f57-82e7-7fa0a3a7761b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/90cbb3f9-6d1f-4f57-82e7-7fa0a3a7761b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x603ce62691f8b3d5663e99069142550e170473f1db2f978c61d1fbf7f82d6aea","name":"Jacques Coursil","registered_at":"2026-06-17T16:12:24Z","symbol":"NIM1448955","token_address":"0xbb023e2ebc63739a367ed5f59704ba40fdfce347","type":"artist","uuid":"90cbb3f9-6d1f-4f57-82e7-7fa0a3a7761b"}
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 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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603ce62691f8b3d5663e99069142550e170473f1db2f978c61d1fbf7f82d6aea. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90cbb3f9-6d1f-4f57-82e7-7fa0a3a7761b.json and https://artists.proofprofile.net/proofs/artist/90cbb3f9-6d1f-4f57-82e7-7fa0a3a7761b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x603ce62691f8b3d5663e99069142550e170473f1db2f978c61d1fbf7f82d6aea","name":"Jacques Coursil","registered_at":"2026-06-17T16:12:24Z","symbol":"NIM1448955","token_address":"0xbb023e2ebc63739a367ed5f59704ba40fdfce347","type":"artist","uuid":"90cbb3f9-6d1f-4f57-82e7-7fa0a3a7761b"}
album: Black Suite
  type: MusicAlbum
  date published: 1971-12-30
album: Minimal Brass
  type: MusicAlbum
  date published: 2005-04-26
album: Clameurs
  type: MusicAlbum
  date published: 2007-01-01
album: Clameurs
  type: MusicAlbum
  date published: 2007-01-01
album: Trails Of Tears
  type: MusicAlbum
  date published: 2011
album: Trails Of Tears
  type: MusicAlbum
  date published: 2011-01-25