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 0xf8a1bde27c819b2424e2707052c1ca038fb82f4f05f0ee9b7050cd5bb98dedd2. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c606d705-0a0a-4470-b471-cecdb0f3f3be.json and https://artists.proofprofile.net/proofs/artist/c606d705-0a0a-4470-b471-cecdb0f3f3be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).