John Mattsy
type: MusicGroup
popularity: 20
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x83622b7579067e5db7a0fd46b09b12a22d41db15bb2acb9518295c1d32282a24
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953772
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953772
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c72105aa-c9bc-4b5b-b912-80f7d7630a86.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c72105aa-c9bc-4b5b-b912-80f7d7630a86.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c72105aa-c9bc-4b5b-b912-80f7d7630a86
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T10:33:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x83622b7579067e5db7a0fd46b09b12a22d41db15bb2acb9518295c1d32282a24","name":"John Mattsy","registered_at":"2026-06-15T01:32:09Z","symbol":"NIM0640020","token_address":"0x9b6f09393f76c5c8dbe62760391c6e7abb9bbe22","type":"artist","uuid":"c72105aa-c9bc-4b5b-b912-80f7d7630a86"}
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 0x83622b7579067e5db7a0fd46b09b12a22d41db15bb2acb9518295c1d32282a24. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c72105aa-c9bc-4b5b-b912-80f7d7630a86.json and https://artists.proofprofile.net/proofs/artist/c72105aa-c9bc-4b5b-b912-80f7d7630a86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T10:40:45Z
  text: {"copyright_id":"0x83622b7579067e5db7a0fd46b09b12a22d41db15bb2acb9518295c1d32282a24","name":"John Mattsy","registered_at":"2026-06-15T01:32:09Z","symbol":"NIM0640020","token_address":"0x9b6f09393f76c5c8dbe62760391c6e7abb9bbe22","type":"artist","uuid":"c72105aa-c9bc-4b5b-b912-80f7d7630a86"}
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