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 0xa7c48fa0376b9d0052a3ca002aa8a79a4e06ff4a382125fa3f77aaaf9bd6ab8a. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2f4c60c-b316-4cee-ae85-1c3f0ef09a6c.json and https://artists.proofprofile.net/proofs/artist/b2f4c60c-b316-4cee-ae85-1c3f0ef09a6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).