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 0xcd3fba4a2b9de11e445de6ad77bc65bf99db77c534c4864e2ba64e2b71f27f0b. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14ad628d-c024-475e-a8a2-fb5f1ed50445.json and https://artists.proofprofile.net/proofs/artist/14ad628d-c024-475e-a8a2-fb5f1ed50445.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).