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 0x848db5314b5a34e976ddb776df9830ee8e85e2b0eedf2c03584a21fcd22696c5. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab1dbc1c-5a49-4b9b-a805-a9cbd6291d9b.json and https://artists.proofprofile.net/proofs/artist/ab1dbc1c-5a49-4b9b-a805-a9cbd6291d9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).