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 0x2491e0d2d5ff8069cb9cc2d54a084a18f5e9c0549c426cf3a98e92896145fc1d. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7ec7c64-cfa0-4933-a300-ed2ec140c91e.json and https://artists.proofprofile.net/proofs/artist/e7ec7c64-cfa0-4933-a300-ed2ec140c91e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kaunas Baltic Connect / Baby, I Don't Care