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 0xfb551431a3f5250ba9d49f549dfa5fc3747ee6ba8a0d5dc8d3be06a3d3b69299. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f5f3658-809b-433a-b8bd-3f570c65adf6.json and https://artists.proofprofile.net/proofs/artist/1f5f3658-809b-433a-b8bd-3f570c65adf6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).