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 0xc742b94ea0ee402d69f046a8949fbbab034fc4c90a5b50bdabdfd8ff1940ca39. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c41eef94-e20f-4b43-bba1-a4cb90f3c9e3.json and https://artists.proofprofile.net/proofs/artist/c41eef94-e20f-4b43-bba1-a4cb90f3c9e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).