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 0x1b111ca64a28a9ac4fb1565e4dbf6ee8f574fdbac1ecfb835d0a95d2d4f87f18. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2460ab7-eba4-48e4-a153-bd0555951b4f.json and https://artists.proofprofile.net/proofs/artist/c2460ab7-eba4-48e4-a153-bd0555951b4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).