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 0x57be6d48a558ec4f28e9112e0cfa7579e9cf5dadd3e05930cdeb2d97371b6ac6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94288fd3-bc8c-449c-a58b-5e2c63128423.json and https://artists.proofprofile.net/proofs/artist/94288fd3-bc8c-449c-a58b-5e2c63128423.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).