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 0x461833c304f4712e3bc30662a29c10c83b8b7910fbf77ba66e0b9ccfc472bc16. Chain 2 (Bitcoin): anchored in block 953961 (2026-06-16T14:58:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27ed82b3-a5fc-4544-ac45-c44383a67fb5.json and https://artists.proofprofile.net/proofs/artist/27ed82b3-a5fc-4544-ac45-c44383a67fb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).