John B
type: MusicGroup
description: John Bryn Williams, known as John B, is an English disc jockey and electronic music producer. He is widely recognised for his eccentric clothing, wild hair, and his production of several cutting edge
popularity: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5e11635b65e3c5380877704dc3f9b058066a2712538d0f0f4b51f62c4ea52abf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953860
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953860
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/02c9a969-f289-4916-ad03-7e98cab5540c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/02c9a969-f289-4916-ad03-7e98cab5540c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/02c9a969-f289-4916-ad03-7e98cab5540c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:55:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5e11635b65e3c5380877704dc3f9b058066a2712538d0f0f4b51f62c4ea52abf","name":"John B","registered_at":"2026-06-15T14:38:11Z","symbol":"NIM0739314","token_address":"0x2d0d658c0ab049d0e99eac423465eac1562eb830","type":"artist","uuid":"02c9a969-f289-4916-ad03-7e98cab5540c"}
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 0x5e11635b65e3c5380877704dc3f9b058066a2712538d0f0f4b51f62c4ea52abf. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02c9a969-f289-4916-ad03-7e98cab5540c.json and https://artists.proofprofile.net/proofs/artist/02c9a969-f289-4916-ad03-7e98cab5540c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T23:55:46Z
  text: {"copyright_id":"0x5e11635b65e3c5380877704dc3f9b058066a2712538d0f0f4b51f62c4ea52abf","name":"John B","registered_at":"2026-06-15T14:38:11Z","symbol":"NIM0739314","token_address":"0x2d0d658c0ab049d0e99eac423465eac1562eb830","type":"artist","uuid":"02c9a969-f289-4916-ad03-7e98cab5540c"}