AbstractWith CASTY, originators such as DApp providers can auction the right to first arbitrage through a smart contract. The searcher is assured trustlessly that their bundle will be executed at the start of each block. Through CASTY, originators are incentivized to send orders to a public mempool and avoid becoming exclusive order flow (EOF). Searchers are motivated to send bundles to various block builders without worrying about trust costs.Product Vision and ScopeOur goal is an inclusive ...