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 0x457b3a64e6d91db0951424ee96f741336a5af274871f2f79018172afc6aa2f78. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d58382d7-8a05-4afc-8557-25517e76259b.json and https://artists.proofprofile.net/proofs/artist/d58382d7-8a05-4afc-8557-25517e76259b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).