John Yap
type: MusicGroup
description: John Yap (; born 1959) is a Canadian politician and former banker. He represented the electoral district of Richmond-Steveston in the Legislative Assembly of British Columbia from 2005 to 2020, as par
popularity: 16
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x15dd1fcf300bf6dc01aea3740a956c2c8e7075c0c31b56afaa444b9bc8b4a273
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a0d7053-2bfc-4d18-a43b-00b7afb016a2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a0d7053-2bfc-4d18-a43b-00b7afb016a2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7a0d7053-2bfc-4d18-a43b-00b7afb016a2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x15dd1fcf300bf6dc01aea3740a956c2c8e7075c0c31b56afaa444b9bc8b4a273","name":"John Yap","registered_at":"2026-06-14T17:18:19Z","symbol":"NIM0522189","token_address":"0x0527a70acb2601194cb688c3b795b868a140699f","type":"artist","uuid":"7a0d7053-2bfc-4d18-a43b-00b7afb016a2"}
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 0x15dd1fcf300bf6dc01aea3740a956c2c8e7075c0c31b56afaa444b9bc8b4a273. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a0d7053-2bfc-4d18-a43b-00b7afb016a2.json and https://artists.proofprofile.net/proofs/artist/7a0d7053-2bfc-4d18-a43b-00b7afb016a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x15dd1fcf300bf6dc01aea3740a956c2c8e7075c0c31b56afaa444b9bc8b4a273","name":"John Yap","registered_at":"2026-06-14T17:18:19Z","symbol":"NIM0522189","token_address":"0x0527a70acb2601194cb688c3b795b868a140699f","type":"artist","uuid":"7a0d7053-2bfc-4d18-a43b-00b7afb016a2"}