TwinCheck

TwinCheck answers open issue #369 on monad-crypto/protocols: integrators copy addresses from the official ~1.7k-row registry with no way to know if source is verified on BOTH Monad explorers (Monadscan AND MonadVision). A live checker probes both explorers (zero mocks), two independent principals co-attest matching results onchain, and the contract emits a pulse event when any dual-status flips. The dashboard renders every watched address as a twin card — whole when the explorers agree, torn when they disagree. TwinCheck even caught its own split: verified on MonadVision, pending on Monadscan. Built solo, in-window; learned: dual-source truth needs onchain co-attestation, not one indexer.