Laurence Voisin
type: MusicGroup
popularity: 14
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb99e81b550278bac385bcd5424567b3ee9bed77c1c4aa9a5522f0f2cc80fd8ef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953786
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953786
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d8f10efc-c02c-4f59-b497-6fa7ac219850.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d8f10efc-c02c-4f59-b497-6fa7ac219850.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d8f10efc-c02c-4f59-b497-6fa7ac219850
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T12:56:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb99e81b550278bac385bcd5424567b3ee9bed77c1c4aa9a5522f0f2cc80fd8ef","name":"Laurence Voisin","registered_at":"2026-06-15T03:23:33Z","symbol":"NIM0666611","token_address":"0x45d3454e9e86d3d36bd3271c66b6c8eee2c8910d","type":"artist","uuid":"d8f10efc-c02c-4f59-b497-6fa7ac219850"}
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 0xb99e81b550278bac385bcd5424567b3ee9bed77c1c4aa9a5522f0f2cc80fd8ef. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8f10efc-c02c-4f59-b497-6fa7ac219850.json and https://artists.proofprofile.net/proofs/artist/d8f10efc-c02c-4f59-b497-6fa7ac219850.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T12:56:12Z
  text: {"copyright_id":"0xb99e81b550278bac385bcd5424567b3ee9bed77c1c4aa9a5522f0f2cc80fd8ef","name":"Laurence Voisin","registered_at":"2026-06-15T03:23:33Z","symbol":"NIM0666611","token_address":"0x45d3454e9e86d3d36bd3271c66b6c8eee2c8910d","type":"artist","uuid":"d8f10efc-c02c-4f59-b497-6fa7ac219850"}
album: Chute des Puissants
  type: MusicAlbum
  date published: 2024-11-23