James Barber
type: MusicGroup
description: James Barber may refer to: James Barber (author) (1923–2007), Canadian author James Barber (biochemist) (1940–2020), British professor of biochemistry at Imperial College London James Barber (politic
popularity: 3
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74c30d3bf72a960b3503a3a812e70482f2fb14913c8cf378b1d2b393c4a2e63b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953954
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953954
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2641570e-8fa1-4c5a-b079-1476d410313a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2641570e-8fa1-4c5a-b079-1476d410313a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2641570e-8fa1-4c5a-b079-1476d410313a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:18:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x74c30d3bf72a960b3503a3a812e70482f2fb14913c8cf378b1d2b393c4a2e63b","name":"James Barber","registered_at":"2026-06-16T02:50:05Z","symbol":"NIM0913993","token_address":"0xffec26390d27445271f3f747b2873cde7cce6e60","type":"artist","uuid":"2641570e-8fa1-4c5a-b079-1476d410313a"}
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 0x74c30d3bf72a960b3503a3a812e70482f2fb14913c8cf378b1d2b393c4a2e63b. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2641570e-8fa1-4c5a-b079-1476d410313a.json and https://artists.proofprofile.net/proofs/artist/2641570e-8fa1-4c5a-b079-1476d410313a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:18:37Z
  text: {"copyright_id":"0x74c30d3bf72a960b3503a3a812e70482f2fb14913c8cf378b1d2b393c4a2e63b","name":"James Barber","registered_at":"2026-06-16T02:50:05Z","symbol":"NIM0913993","token_address":"0xffec26390d27445271f3f747b2873cde7cce6e60","type":"artist","uuid":"2641570e-8fa1-4c5a-b079-1476d410313a"}