To get some insight, we modeled a financial derivative contract on the Ethereum blockchain to see what a decentralized, peer-to-peer financial instrument would actually look like. Smart contracts potentially allow us to simply put a contract on a blockchain and forget about it, secure in the knowledge that it would execute autonomously. Even now, where constraints in the conventional financial system make a contract sufficiently expensive or impossible, one could trade on a blockchain in a peer-to-peer, decentralized manner if needed.