Sun Ming-hsien (; 8 June 1937 – 21 January 2018), also known by his English name Paul Sun, was a Taiwanese agronomist. Early life and education Sun was born on June 8, 1937, in Tainan. He graduated f
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 0x2ba16531e486f75b09be0f7afb6c5e8467dcdc26df7e08aba986cb00766c45b5. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80aa80e1-bb79-4910-b3f9-c241a0f33dfd.json and https://artists.proofprofile.net/proofs/artist/80aa80e1-bb79-4910-b3f9-c241a0f33dfd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).