Léonore Boulanger
type: MusicGroup
genre: avant-garde
popularity: 3
followers: 872
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74c080b5d2baf145ae06b5cf486568adf7ec6af5dcaeb7402809fcb11d637355
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fe3e7825-3b87-46a4-bf95-fd2829acbba4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fe3e7825-3b87-46a4-bf95-fd2829acbba4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fe3e7825-3b87-46a4-bf95-fd2829acbba4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x74c080b5d2baf145ae06b5cf486568adf7ec6af5dcaeb7402809fcb11d637355","name":"Léonore Boulanger","registered_at":"2026-06-21T18:16:05Z","symbol":"NIM1996809","token_address":"0x8fcc973207003ae048f3303b7ab68818aa6de870","type":"artist","uuid":"fe3e7825-3b87-46a4-bf95-fd2829acbba4"}
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 0x74c080b5d2baf145ae06b5cf486568adf7ec6af5dcaeb7402809fcb11d637355. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe3e7825-3b87-46a4-bf95-fd2829acbba4.json and https://artists.proofprofile.net/proofs/artist/fe3e7825-3b87-46a4-bf95-fd2829acbba4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x74c080b5d2baf145ae06b5cf486568adf7ec6af5dcaeb7402809fcb11d637355","name":"Léonore Boulanger","registered_at":"2026-06-21T18:16:05Z","symbol":"NIM1996809","token_address":"0x8fcc973207003ae048f3303b7ab68818aa6de870","type":"artist","uuid":"fe3e7825-3b87-46a4-bf95-fd2829acbba4"}
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  type: MusicAlbum
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