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 0x62467978bed27ac0c505e36b52989ab94758c288d4403f1009e86e4ebfe6c44d. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c407ffcb-49ca-4e9e-8015-87c20b1c2e77.json and https://artists.proofprofile.net/proofs/artist/c407ffcb-49ca-4e9e-8015-87c20b1c2e77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Electronic Language - Progressive Session Chapter 13