David Lanclas
type: MusicGroup
genre: acoustic pop
popularity: 22
followers: 387
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc034d9e969722de21e4786db07ef80d2d2527cb2c804a27792bf7f0b2fbfbfc2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5f30bd3-9da2-4475-84b3-066e84c900a9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5f30bd3-9da2-4475-84b3-066e84c900a9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b5f30bd3-9da2-4475-84b3-066e84c900a9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc034d9e969722de21e4786db07ef80d2d2527cb2c804a27792bf7f0b2fbfbfc2","name":"David Lanclas","registered_at":"2026-06-12T07:56:30Z","symbol":"NIM0234790","token_address":"0xac26a37ac6247a2b55f470f8356a624c4e575e47","type":"artist","uuid":"b5f30bd3-9da2-4475-84b3-066e84c900a9"}
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 0xc034d9e969722de21e4786db07ef80d2d2527cb2c804a27792bf7f0b2fbfbfc2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5f30bd3-9da2-4475-84b3-066e84c900a9.json and https://artists.proofprofile.net/proofs/artist/b5f30bd3-9da2-4475-84b3-066e84c900a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xc034d9e969722de21e4786db07ef80d2d2527cb2c804a27792bf7f0b2fbfbfc2","name":"David Lanclas","registered_at":"2026-06-12T07:56:30Z","symbol":"NIM0234790","token_address":"0xac26a37ac6247a2b55f470f8356a624c4e575e47","type":"artist","uuid":"b5f30bd3-9da2-4475-84b3-066e84c900a9"}