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 0x382c728d6b701d7ba16dbdb2fca605bb0e291071a3dccf8455e8e1ac193a8692. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78b290da-52d2-4bf1-bd9b-40fe2a8d0ee0.json and https://artists.proofprofile.net/proofs/artist/78b290da-52d2-4bf1-bd9b-40fe2a8d0ee0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).