Jean-Sébastien Vallée
type: MusicGroup
genre: choral
genre: requiem
popularity: 10
followers: 154
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x27b127e66d23a49effa559910fb823fc68ec37cde4912260530852f72e426e02
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1be9886a-c084-4d8f-b71a-cfcd351f4b50.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1be9886a-c084-4d8f-b71a-cfcd351f4b50.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1be9886a-c084-4d8f-b71a-cfcd351f4b50
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x27b127e66d23a49effa559910fb823fc68ec37cde4912260530852f72e426e02","name":"Jean-Sébastien Vallée","registered_at":"2026-06-15T23:10:26Z","symbol":"NIM0861536","token_address":"0x831489f8dd3b24e10b2900bad4f7a8dce83979e1","type":"artist","uuid":"1be9886a-c084-4d8f-b71a-cfcd351f4b50"}
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 0x27b127e66d23a49effa559910fb823fc68ec37cde4912260530852f72e426e02. 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/1be9886a-c084-4d8f-b71a-cfcd351f4b50.json and https://artists.proofprofile.net/proofs/artist/1be9886a-c084-4d8f-b71a-cfcd351f4b50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x27b127e66d23a49effa559910fb823fc68ec37cde4912260530852f72e426e02","name":"Jean-Sébastien Vallée","registered_at":"2026-06-15T23:10:26Z","symbol":"NIM0861536","token_address":"0x831489f8dd3b24e10b2900bad4f7a8dce83979e1","type":"artist","uuid":"1be9886a-c084-4d8f-b71a-cfcd351f4b50"}