RealTract is going to launch Smart Contract 2.0 on Blockchain 4.0. RealTract aims to create a truly democratic and decentralized blockchain enabling common users to get the benefits from the blockchain technology and digital currencies. RealTract aims to implement a real practical and powerful support mechanism for blockchain and provide the infrastructure for all kinds of blockchain-based applications, and an underlying development platform for all kinds of DApps and practical and feasible solutions for constructing the global blockchain of future.