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 0x0fdbd460d78e66e7c1caad3c3b6817a9c47f12c0c9739ef2214026a28adf7570. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79e8574d-7d9f-4bb7-803c-3f08054ff8b2.json and https://artists.proofprofile.net/proofs/artist/79e8574d-7d9f-4bb7-803c-3f08054ff8b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).