John Preston
type: MusicGroup
description: John Preston may refer to: Politicians John Preston (died 1434), Member of Parliament (MP) for Sussex John Preston (c. 1578 – c. 1642), MP for Lancaster John Preston (alderman) (1611–1686), mayor of
popularity: 4
followers: 383
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc6c6318985ab50d08a1e35b4b40f7e505f5e9e35f574c8b287205073f6605a52
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/202d07ce-b2bc-49db-b65f-74c39a111922.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/202d07ce-b2bc-49db-b65f-74c39a111922.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/202d07ce-b2bc-49db-b65f-74c39a111922
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc6c6318985ab50d08a1e35b4b40f7e505f5e9e35f574c8b287205073f6605a52","name":"John Preston","registered_at":"2026-06-16T00:47:52Z","symbol":"NIM0884794","token_address":"0x7fe1fa90921cff9b039227b54c9d7e2168b6fb60","type":"artist","uuid":"202d07ce-b2bc-49db-b65f-74c39a111922"}
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 0xc6c6318985ab50d08a1e35b4b40f7e505f5e9e35f574c8b287205073f6605a52. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/202d07ce-b2bc-49db-b65f-74c39a111922.json and https://artists.proofprofile.net/proofs/artist/202d07ce-b2bc-49db-b65f-74c39a111922.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xc6c6318985ab50d08a1e35b4b40f7e505f5e9e35f574c8b287205073f6605a52","name":"John Preston","registered_at":"2026-06-16T00:47:52Z","symbol":"NIM0884794","token_address":"0x7fe1fa90921cff9b039227b54c9d7e2168b6fb60","type":"artist","uuid":"202d07ce-b2bc-49db-b65f-74c39a111922"}
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