Café Crème
type: MusicGroup
popularity: 2
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2caf820adf9ac7e5e25a7055d4bd469ec5cb5bae5f10c014ed5a4783f320016f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ebb6847a-d4ce-4198-92e2-9d014e3647a8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ebb6847a-d4ce-4198-92e2-9d014e3647a8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ebb6847a-d4ce-4198-92e2-9d014e3647a8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2caf820adf9ac7e5e25a7055d4bd469ec5cb5bae5f10c014ed5a4783f320016f","name":"Café Crème","registered_at":"2026-06-21T11:21:30Z","symbol":"NIM1910083","token_address":"0x9d8609e0171341d4d8fe295b8785f49ab94a6a18","type":"artist","uuid":"ebb6847a-d4ce-4198-92e2-9d014e3647a8"}
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 0x2caf820adf9ac7e5e25a7055d4bd469ec5cb5bae5f10c014ed5a4783f320016f. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebb6847a-d4ce-4198-92e2-9d014e3647a8.json and https://artists.proofprofile.net/proofs/artist/ebb6847a-d4ce-4198-92e2-9d014e3647a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x2caf820adf9ac7e5e25a7055d4bd469ec5cb5bae5f10c014ed5a4783f320016f","name":"Café Crème","registered_at":"2026-06-21T11:21:30Z","symbol":"NIM1910083","token_address":"0x9d8609e0171341d4d8fe295b8785f49ab94a6a18","type":"artist","uuid":"ebb6847a-d4ce-4198-92e2-9d014e3647a8"}
album: Et avec ceci ?
  type: MusicAlbum
  date published: 2024-03-02