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 0xabaee4bb5daa05f67ac162f379fb2a3d25f03ee6298459c5da897c36dd67c4a2. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c13045e-6e2d-41ff-b7b7-b2f8f325c5c0.json and https://artists.proofprofile.net/proofs/artist/9c13045e-6e2d-41ff-b7b7-b2f8f325c5c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).