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 0xe0918f4800ea73b2d32451a3281a4eb3ff199d2075edc97bbdfa1e8d9f885313. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e57fd68b-1436-4bc1-8f7b-aa01ebc5a931.json and https://artists.proofprofile.net/proofs/artist/e57fd68b-1436-4bc1-8f7b-aa01ebc5a931.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).