Matt Cox
type: MusicGroup
genre: americana
popularity: 2
followers: 426
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x38de3713afc055360d24af3ebec16ed346b4e90fdea26ac2e008f19f6e1281b7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af484cd9-afd8-4440-bd62-79aa57fe1449.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af484cd9-afd8-4440-bd62-79aa57fe1449.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/af484cd9-afd8-4440-bd62-79aa57fe1449
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x38de3713afc055360d24af3ebec16ed346b4e90fdea26ac2e008f19f6e1281b7","name":"Matt Cox","registered_at":"2026-06-20T11:05:25Z","symbol":"NIM1598417","token_address":"0x6151dff370350879c4ae7b4e50315a6d30e80923","type":"artist","uuid":"af484cd9-afd8-4440-bd62-79aa57fe1449"}
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 0x38de3713afc055360d24af3ebec16ed346b4e90fdea26ac2e008f19f6e1281b7. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af484cd9-afd8-4440-bd62-79aa57fe1449.json and https://artists.proofprofile.net/proofs/artist/af484cd9-afd8-4440-bd62-79aa57fe1449.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0x38de3713afc055360d24af3ebec16ed346b4e90fdea26ac2e008f19f6e1281b7","name":"Matt Cox","registered_at":"2026-06-20T11:05:25Z","symbol":"NIM1598417","token_address":"0x6151dff370350879c4ae7b4e50315a6d30e80923","type":"artist","uuid":"af484cd9-afd8-4440-bd62-79aa57fe1449"}
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