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 0x4dca4d9b02b67ddd1bb45c53b48ff34d08b75ba3aa7defcc4e84a3ac93b3b185. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db515cd9-57c5-4b27-b52c-9b1ba9b86879.json and https://artists.proofprofile.net/proofs/artist/db515cd9-57c5-4b27-b52c-9b1ba9b86879.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).