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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc7f9d51f8a2fb037e820ae4a5f57a0fc95aba4d95ebd364e91bf430d23b19e. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3acd979-b3d4-4fa8-8c92-a54ec4427459.json and https://artists.proofprofile.net/proofs/artist/f3acd979-b3d4-4fa8-8c92-a54ec4427459.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).