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 0xf5aee058ac5fec64f010cf6cd1558f9d1ed6f2b5955eff19810f8abc92a1b4f0. 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/c3089c2d-9c61-4df6-8461-6e9d9cb7f011.json and https://artists.proofprofile.net/proofs/artist/c3089c2d-9c61-4df6-8461-6e9d9cb7f011.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).