Cá Nóc
type: MusicGroup
genre: vietnamese hip hop
popularity: 18
followers: 354
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb3733e7668443c978fc53e1825ad4fc153fc2ae7125e47d4c82d1634a7c3258f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953817
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953817
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa829e21-3290-41f1-b45a-c985acf8e0ea.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa829e21-3290-41f1-b45a-c985acf8e0ea.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fa829e21-3290-41f1-b45a-c985acf8e0ea
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:10:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb3733e7668443c978fc53e1825ad4fc153fc2ae7125e47d4c82d1634a7c3258f","name":"Cá Nóc","registered_at":"2026-06-15T06:45:47Z","symbol":"NIM0714894","token_address":"0xfe38ee33104086df86b0299f127f6c05e1a07f1f","type":"artist","uuid":"fa829e21-3290-41f1-b45a-c985acf8e0ea"}
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 0xb3733e7668443c978fc53e1825ad4fc153fc2ae7125e47d4c82d1634a7c3258f. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa829e21-3290-41f1-b45a-c985acf8e0ea.json and https://artists.proofprofile.net/proofs/artist/fa829e21-3290-41f1-b45a-c985acf8e0ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T18:10:31Z
  text: {"copyright_id":"0xb3733e7668443c978fc53e1825ad4fc153fc2ae7125e47d4c82d1634a7c3258f","name":"Cá Nóc","registered_at":"2026-06-15T06:45:47Z","symbol":"NIM0714894","token_address":"0xfe38ee33104086df86b0299f127f6c05e1a07f1f","type":"artist","uuid":"fa829e21-3290-41f1-b45a-c985acf8e0ea"}
album: Binh Đoàn 13 (Chị Mười Ba Original Soundtrack)
  type: MusicAlbum
  date published: 2020-01-01