1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd44ffe6d116c389f5eceb38347ad6946fbcfb5a29d2ab35e3d1695827b8dba21. 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/ba5cbe89-8ba9-4a21-b1e1-abf4554ba7fc.json and https://artists.proofprofile.net/proofs/artist/ba5cbe89-8ba9-4a21-b1e1-abf4554ba7fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).