Joël Roulleau
type: MusicGroup
popularity: 2
followers: 169
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42d94ad96768092d5fb0e9e3db72de2916e2ca3513be9435a2adda383a8b26cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4a218e5-4b42-4777-ac7d-c09ffce04f63.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4a218e5-4b42-4777-ac7d-c09ffce04f63.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c4a218e5-4b42-4777-ac7d-c09ffce04f63
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x42d94ad96768092d5fb0e9e3db72de2916e2ca3513be9435a2adda383a8b26cc","name":"Joël Roulleau","registered_at":"2026-06-20T20:42:24Z","symbol":"NIM1707472","token_address":"0xfb5c26c202017f07e136b19e0f6c2b1118359b87","type":"artist","uuid":"c4a218e5-4b42-4777-ac7d-c09ffce04f63"}
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 0x42d94ad96768092d5fb0e9e3db72de2916e2ca3513be9435a2adda383a8b26cc. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4a218e5-4b42-4777-ac7d-c09ffce04f63.json and https://artists.proofprofile.net/proofs/artist/c4a218e5-4b42-4777-ac7d-c09ffce04f63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x42d94ad96768092d5fb0e9e3db72de2916e2ca3513be9435a2adda383a8b26cc","name":"Joël Roulleau","registered_at":"2026-06-20T20:42:24Z","symbol":"NIM1707472","token_address":"0xfb5c26c202017f07e136b19e0f6c2b1118359b87","type":"artist","uuid":"c4a218e5-4b42-4777-ac7d-c09ffce04f63"}
album: Le chant de l'eau - Un compositeur dialogue avec la création, Vol.2
  type: MusicAlbum
  date published: 2008-03-06
album: Le chant des saisons
  type: MusicAlbum
  date published: 2011-11-21