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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c4c881d7721d5ec122b4b4d7b5c4a86afffcb71e1c96d9b136e553c6e18d07. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ef80a45-6048-4096-a98d-6c1220710f7a.json and https://artists.proofprofile.net/proofs/artist/8ef80a45-6048-4096-a98d-6c1220710f7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
How Are You? We Are Fine, Thank You (10th Anniversary Edition)