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 0x025c661a0c7711be642e16721f9cbef7e004a9b760e29c1320d630354ae8b5d9. 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/a97f4a26-a896-48c2-a8bf-f38bb8db94c5.json and https://artists.proofprofile.net/proofs/artist/a97f4a26-a896-48c2-a8bf-f38bb8db94c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).