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 0xc6db76cff9ac5f458932b4d69dbecd9b0368d22877e3ac27b6f427a3de29c6fa. Chain 2 (Bitcoin): anchored in block 954085 (2026-06-17T10:45:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79910add-a40f-412f-942e-9af79a941182.json and https://artists.proofprofile.net/proofs/artist/79910add-a40f-412f-942e-9af79a941182.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).