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 0x5bc37694a13736437d781a31992bd5a1f9547268b9d7e66248958e5204b3c1fa. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bfa9cf9-e5c4-41ce-b1e4-26e2022887d1.json and https://artists.proofprofile.net/proofs/artist/9bfa9cf9-e5c4-41ce-b1e4-26e2022887d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).