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 0x1e2b57054e60e7697fd12ec6bc0a8fee4b5a7b341090845f8f50dcb761b52fb7. 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/8a7276a5-bd63-4077-86f4-ec8dbba2edf9.json and https://artists.proofprofile.net/proofs/artist/8a7276a5-bd63-4077-86f4-ec8dbba2edf9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).