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 0xd665af11f3adaefc2188988e9ea55dad1e810d30944bd0c2d764d2d690d95e09. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29ed4c69-f4d3-4712-b91f-e090545de7ab.json and https://artists.proofprofile.net/proofs/artist/29ed4c69-f4d3-4712-b91f-e090545de7ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sun To Bhauji Tor Bahin Domkach Geet 2024