John Roberts & Tony Barrand
type: MusicGroup
genre: celtic
genre: folk
genre: sea shanties
popularity: 4
followers: 553
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3567c30f50e773396a2372c21f9e6785a476cfcb855b177cf541b15b510f5dae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91a1611e-57f2-4dc1-95c5-16042780e238.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91a1611e-57f2-4dc1-95c5-16042780e238.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/91a1611e-57f2-4dc1-95c5-16042780e238
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3567c30f50e773396a2372c21f9e6785a476cfcb855b177cf541b15b510f5dae","name":"John Roberts & Tony Barrand","registered_at":"2026-06-17T16:49:31Z","symbol":"NIM1457815","token_address":"0xd985a4eb23578324b2612a0d872a16594a078f90","type":"artist","uuid":"91a1611e-57f2-4dc1-95c5-16042780e238"}
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 0x3567c30f50e773396a2372c21f9e6785a476cfcb855b177cf541b15b510f5dae. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91a1611e-57f2-4dc1-95c5-16042780e238.json and https://artists.proofprofile.net/proofs/artist/91a1611e-57f2-4dc1-95c5-16042780e238.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x3567c30f50e773396a2372c21f9e6785a476cfcb855b177cf541b15b510f5dae","name":"John Roberts & Tony Barrand","registered_at":"2026-06-17T16:49:31Z","symbol":"NIM1457815","token_address":"0xd985a4eb23578324b2612a0d872a16594a078f90","type":"artist","uuid":"91a1611e-57f2-4dc1-95c5-16042780e238"}
album: Mellow With Ale From the Horn
  type: MusicAlbum
  date published: 1975-01-01
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  type: MusicAlbum
  date published: 1992-01-01
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  type: MusicAlbum
  date published: 1997-01-01
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  type: MusicAlbum
  date published: 1998-01-01
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  type: MusicAlbum
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album: Twiddlum Twaddlum
  type: MusicAlbum
  date published: 2003-01-01