DEx.top is a decentralized Ethereum-token exchange platform based on smart contract. It introduces the innovative ROC (Relayed On Chain) trading mechanism that leverages the synchronized off-chain and on-chain ledgers to enable instant trading while making traders' assets safe. DEx.top is committed to providing the most secure, instant, and low-cost trading experience to end users in all levels. DEx.top is comprised of an international team incubated by Bitmain. Team members have been building and pushing the development of the fundamentals of blockchain by working on consensus mechanisms, complicated smart contract models and a decentralized futures’ contracts.