Marceau Lemieux
type: MusicGroup
popularity: 13
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71d9b9f524eea6ff52b188205f9596652e27079c1332946c4f340f928bdb3e15
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/26f34921-87c5-4783-8982-2ff8e01db1e3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/26f34921-87c5-4783-8982-2ff8e01db1e3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/26f34921-87c5-4783-8982-2ff8e01db1e3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x71d9b9f524eea6ff52b188205f9596652e27079c1332946c4f340f928bdb3e15","name":"Marceau Lemieux","registered_at":"2026-06-14T08:32:28Z","symbol":"NIM0396731","token_address":"0xb765627c1e5596cbd79218e27c1c3f528f327514","type":"artist","uuid":"26f34921-87c5-4783-8982-2ff8e01db1e3"}
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 0x71d9b9f524eea6ff52b188205f9596652e27079c1332946c4f340f928bdb3e15. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26f34921-87c5-4783-8982-2ff8e01db1e3.json and https://artists.proofprofile.net/proofs/artist/26f34921-87c5-4783-8982-2ff8e01db1e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:37:06Z
  text: {"copyright_id":"0x71d9b9f524eea6ff52b188205f9596652e27079c1332946c4f340f928bdb3e15","name":"Marceau Lemieux","registered_at":"2026-06-14T08:32:28Z","symbol":"NIM0396731","token_address":"0xb765627c1e5596cbd79218e27c1c3f528f327514","type":"artist","uuid":"26f34921-87c5-4783-8982-2ff8e01db1e3"}
album: Flamme et Neige
  type: MusicAlbum
  date published: 2024-10-20