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 0x06fd729d4a9c81c8129833d83aa8bd7aa1b5510aa9926bd587e8e8ac16600324. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a64282b2-8b5e-4255-9d2f-ffc08843b859.json and https://artists.proofprofile.net/proofs/artist/a64282b2-8b5e-4255-9d2f-ffc08843b859.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).