ฝ้าย แอม ฟายน์ (ฝ้าย Am Fine)
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 0xdaba6613ffc2700250eec5c6f8d63f8b2cd81013cde8e3f753fa817db779e23e. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f78e350-e06b-4183-8a8b-9385d9ee2ba4.json and https://artists.proofprofile.net/proofs/artist/9f78e350-e06b-4183-8a8b-9385d9ee2ba4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).