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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae09f05b29461edc0519368550f270f6aff1bf4e796cf512c7bf930fd4dd5d2e. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/792761ea-1f47-4ae5-a43d-c014e8c1ca0c.json and https://artists.proofprofile.net/proofs/artist/792761ea-1f47-4ae5-a43d-c014e8c1ca0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).