John Matthews
type: MusicGroup
genre: singer-songwriter
popularity: 2
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2460e1c559abd36bcc16d9f04606aec3d0fa97c51020059fb3e8028c8d1a2db3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2e487e9-12cb-46b0-8bd9-3a2f9dbf0c50.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2e487e9-12cb-46b0-8bd9-3a2f9dbf0c50.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a2e487e9-12cb-46b0-8bd9-3a2f9dbf0c50
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2460e1c559abd36bcc16d9f04606aec3d0fa97c51020059fb3e8028c8d1a2db3","name":"John Matthews","registered_at":"2026-06-20T06:29:16Z","symbol":"NIM1540729","token_address":"0xe73071a95efc73833bb6e19c160c0241b7e495aa","type":"artist","uuid":"a2e487e9-12cb-46b0-8bd9-3a2f9dbf0c50"}
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 0x2460e1c559abd36bcc16d9f04606aec3d0fa97c51020059fb3e8028c8d1a2db3. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2e487e9-12cb-46b0-8bd9-3a2f9dbf0c50.json and https://artists.proofprofile.net/proofs/artist/a2e487e9-12cb-46b0-8bd9-3a2f9dbf0c50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x2460e1c559abd36bcc16d9f04606aec3d0fa97c51020059fb3e8028c8d1a2db3","name":"John Matthews","registered_at":"2026-06-20T06:29:16Z","symbol":"NIM1540729","token_address":"0xe73071a95efc73833bb6e19c160c0241b7e495aa","type":"artist","uuid":"a2e487e9-12cb-46b0-8bd9-3a2f9dbf0c50"}
album: This Is My Life!
  type: MusicAlbum
  date published: 2024-09-08
album: Even Though You're Not With Me
  type: MusicAlbum
  date published: 2024-12-14