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 0xa846a122469c215d8b830e5d71db37d1d6bbb9d61e8fa46520ceb7bb1e93a388. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48795e35-0ed2-4597-bb87-d7871fa5c02f.json and https://artists.proofprofile.net/proofs/artist/48795e35-0ed2-4597-bb87-d7871fa5c02f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).