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 0x43cfcbbb60ad15e74414db6f919cd4ae62220735e580c9177294a5e3f48be43c. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07a8e07f-3a06-4ec0-8dc8-4daf9995fa3e.json and https://artists.proofprofile.net/proofs/artist/07a8e07f-3a06-4ec0-8dc8-4daf9995fa3e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).