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 0x83a3b2d54de541cc8b10865c1cdbbcb4e8767a6f731d8709bcdd1676f18b1417. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb108608-0cbb-451b-b6cf-b1770d6c49a2.json and https://artists.proofprofile.net/proofs/artist/bb108608-0cbb-451b-b6cf-b1770d6c49a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).