John St.John
type: MusicGroup
genre: celtic
genre: ragtime
popularity: 2
followers: 69
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x34e9790436ad2a284bc2d31bd19256943a386b306503e35db8ce1652b2c07123
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f446867-c2f5-4020-8e93-78b730590663.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f446867-c2f5-4020-8e93-78b730590663.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3f446867-c2f5-4020-8e93-78b730590663
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x34e9790436ad2a284bc2d31bd19256943a386b306503e35db8ce1652b2c07123","name":"John St.John","registered_at":"2026-06-16T11:40:09Z","symbol":"NIM1040548","token_address":"0xea856ae6036fd7d5bd5d022adbebcc464a009b8b","type":"artist","uuid":"3f446867-c2f5-4020-8e93-78b730590663"}
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 0x34e9790436ad2a284bc2d31bd19256943a386b306503e35db8ce1652b2c07123. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f446867-c2f5-4020-8e93-78b730590663.json and https://artists.proofprofile.net/proofs/artist/3f446867-c2f5-4020-8e93-78b730590663.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0x34e9790436ad2a284bc2d31bd19256943a386b306503e35db8ce1652b2c07123","name":"John St.John","registered_at":"2026-06-16T11:40:09Z","symbol":"NIM1040548","token_address":"0xea856ae6036fd7d5bd5d022adbebcc464a009b8b","type":"artist","uuid":"3f446867-c2f5-4020-8e93-78b730590663"}
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