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 0x8faeb974b916462d8ad35126eeb3d31d1dfd0de36a990d7dc7bcd6fd9c4f57bf. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bca26a21-2b2d-405e-9f68-413ff0f17c5e.json and https://artists.proofprofile.net/proofs/artist/bca26a21-2b2d-405e-9f68-413ff0f17c5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).