Cassandra Guillaume
type: MusicGroup
popularity: 12
followers: 79
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7254a25cfd92f6705028fe814894e1aee4ec752bce21cc0c715469738b990c6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f06dd8dc-504d-482e-b7ab-55b1addf1113.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f06dd8dc-504d-482e-b7ab-55b1addf1113.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f06dd8dc-504d-482e-b7ab-55b1addf1113
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd7254a25cfd92f6705028fe814894e1aee4ec752bce21cc0c715469738b990c6","name":"Cassandra Guillaume","registered_at":"2026-06-15T05:46:43Z","symbol":"NIM0700792","token_address":"0xf9aa387579ed2fd42ebf464d043aa7f249e86158","type":"artist","uuid":"f06dd8dc-504d-482e-b7ab-55b1addf1113"}
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 0xd7254a25cfd92f6705028fe814894e1aee4ec752bce21cc0c715469738b990c6. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f06dd8dc-504d-482e-b7ab-55b1addf1113.json and https://artists.proofprofile.net/proofs/artist/f06dd8dc-504d-482e-b7ab-55b1addf1113.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0xd7254a25cfd92f6705028fe814894e1aee4ec752bce21cc0c715469738b990c6","name":"Cassandra Guillaume","registered_at":"2026-06-15T05:46:43Z","symbol":"NIM0700792","token_address":"0xf9aa387579ed2fd42ebf464d043aa7f249e86158","type":"artist","uuid":"f06dd8dc-504d-482e-b7ab-55b1addf1113"}
album: M Konte Sou Ou
  type: MusicAlbum
  date published: 2024-03-31
album: NOT ALONE
  type: MusicAlbum
  date published: 2024-09-26