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 0x1a466a8ca7ae897c9398e608414a3ce0f996b00583b35cbd17961f2b5353269d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7766697-ddb0-48f1-9675-cc99d67048c8.json and https://artists.proofprofile.net/proofs/artist/a7766697-ddb0-48f1-9675-cc99d67048c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
WALLSDOWN II: Beyond Cyborgs, tECHnO Inside Us