French Café Jazz
type: MusicGroup
genre: big band
popularity: 18
followers: 174
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66b16964f9a8a8724329275da26ecbbb51ce06adfe7a6732f4df6fde6d4c8312
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953621
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953621
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21c41362-af1c-4808-ab52-1c5e6a883d60.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21c41362-af1c-4808-ab52-1c5e6a883d60.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/21c41362-af1c-4808-ab52-1c5e6a883d60
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:42:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66b16964f9a8a8724329275da26ecbbb51ce06adfe7a6732f4df6fde6d4c8312","name":"French Café Jazz","registered_at":"2026-06-14T07:55:00Z","symbol":"NIM0387802","token_address":"0xdbf202b06b9bc5b8d3eccea0521152652a7bc6f3","type":"artist","uuid":"21c41362-af1c-4808-ab52-1c5e6a883d60"}
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 0x66b16964f9a8a8724329275da26ecbbb51ce06adfe7a6732f4df6fde6d4c8312. 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/21c41362-af1c-4808-ab52-1c5e6a883d60.json and https://artists.proofprofile.net/proofs/artist/21c41362-af1c-4808-ab52-1c5e6a883d60.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:37:06Z
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