Black Coffee
type: MusicGroup
genre: bossa nova
popularity: 5
followers: 492
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3592da2628f0988f239da243969e255976d2e681401005d0fdf953db2073f1b9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/99b1c287-acc8-4c76-9a70-fd40f9cf8442.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/99b1c287-acc8-4c76-9a70-fd40f9cf8442.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/99b1c287-acc8-4c76-9a70-fd40f9cf8442
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3592da2628f0988f239da243969e255976d2e681401005d0fdf953db2073f1b9","name":"Black Coffee","registered_at":"2026-06-17T19:21:49Z","symbol":"NIM1494169","token_address":"0xa6451a8d004f69c7228626b3aa8517def7b30db1","type":"artist","uuid":"99b1c287-acc8-4c76-9a70-fd40f9cf8442"}
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 0x3592da2628f0988f239da243969e255976d2e681401005d0fdf953db2073f1b9. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99b1c287-acc8-4c76-9a70-fd40f9cf8442.json and https://artists.proofprofile.net/proofs/artist/99b1c287-acc8-4c76-9a70-fd40f9cf8442.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x3592da2628f0988f239da243969e255976d2e681401005d0fdf953db2073f1b9","name":"Black Coffee","registered_at":"2026-06-17T19:21:49Z","symbol":"NIM1494169","token_address":"0xa6451a8d004f69c7228626b3aa8517def7b30db1","type":"artist","uuid":"99b1c287-acc8-4c76-9a70-fd40f9cf8442"}
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