Full name of DSF: Decentralized Social Finance, Distributed Social Finance Chain. DSF is developed based on Ethereum and positioned as the most important link in the Ethereum DeFi ecosystem, namely the distributed financial social network. Through innovative research and development of an on chain social contract system, all social relationships between users in DSF are recorded in the blockchain, and through deep integration of on chain social contracts with various DeFi distributed financial applications, revolutionary innovation is brought to distributed financial applications from multiple dimensions such as design, promotion, and service. From this perspective, DSF is the infrastructure for the next generation of DeFi applications.DSF has a research and development team of over a hundred people combined with BAT Messenger. Currently, its encrypted social app Dechat has hundreds of thousands of users and is continuously integrating with the BAT Messenger community, which has tens of millions of users. DSF is expected to launch the Stacking network and corresponding DeFi applications from 2020 to 2021, including distributed social lending, distributed social investment and wealth management, distributed social e-commerce, distributed social insurance, etc....