Yannick Callier
type: MusicGroup
genre: chamber music
popularity: 5
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xba7707f2c3abdc811b48f352bc2be074885bece47076ad8248b32730035c9ffd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a0aff54-ac93-41d0-bbc7-93c16e3dde14.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a0aff54-ac93-41d0-bbc7-93c16e3dde14.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a0aff54-ac93-41d0-bbc7-93c16e3dde14
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xba7707f2c3abdc811b48f352bc2be074885bece47076ad8248b32730035c9ffd","name":"Yannick Callier","registered_at":"2026-06-15T22:36:11Z","symbol":"NIM0853350","token_address":"0x667c7ea7e7b891fd3e71176c8bd5c9cf9adfb13e","type":"artist","uuid":"1a0aff54-ac93-41d0-bbc7-93c16e3dde14"}
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 0xba7707f2c3abdc811b48f352bc2be074885bece47076ad8248b32730035c9ffd. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a0aff54-ac93-41d0-bbc7-93c16e3dde14.json and https://artists.proofprofile.net/proofs/artist/1a0aff54-ac93-41d0-bbc7-93c16e3dde14.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xba7707f2c3abdc811b48f352bc2be074885bece47076ad8248b32730035c9ffd","name":"Yannick Callier","registered_at":"2026-06-15T22:36:11Z","symbol":"NIM0853350","token_address":"0x667c7ea7e7b891fd3e71176c8bd5c9cf9adfb13e","type":"artist","uuid":"1a0aff54-ac93-41d0-bbc7-93c16e3dde14"}