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
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
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).