John Perry
type: MusicGroup
genre: choral
description: John Perry may refer to: Politicians John Perry (1845–1922), Australian politician, member for Richmond, Ballina and Byron John Perry (1849–1935), Australian politician, member for Liverpool Plains J
popularity: 2
followers: 104
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdc1bd9d58e8c5b8d7a83869c8b8082bb8f266eec4c42e91e6d68cd21aaf3ff98
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e6d4caa8-7bba-490f-8d54-5e5e23618d79.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e6d4caa8-7bba-490f-8d54-5e5e23618d79.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e6d4caa8-7bba-490f-8d54-5e5e23618d79
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdc1bd9d58e8c5b8d7a83869c8b8082bb8f266eec4c42e91e6d68cd21aaf3ff98","name":"John Perry","registered_at":"2026-06-21T09:02:13Z","symbol":"NIM1879208","token_address":"0xad18ac8836c198db47a6c217c435d3678e5c4255","type":"artist","uuid":"e6d4caa8-7bba-490f-8d54-5e5e23618d79"}
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 0xdc1bd9d58e8c5b8d7a83869c8b8082bb8f266eec4c42e91e6d68cd21aaf3ff98. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6d4caa8-7bba-490f-8d54-5e5e23618d79.json and https://artists.proofprofile.net/proofs/artist/e6d4caa8-7bba-490f-8d54-5e5e23618d79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xdc1bd9d58e8c5b8d7a83869c8b8082bb8f266eec4c42e91e6d68cd21aaf3ff98","name":"John Perry","registered_at":"2026-06-21T09:02:13Z","symbol":"NIM1879208","token_address":"0xad18ac8836c198db47a6c217c435d3678e5c4255","type":"artist","uuid":"e6d4caa8-7bba-490f-8d54-5e5e23618d79"}
album: New American Masterworks for Solo Piano
  type: MusicAlbum
  date published: 1999
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