Usechain is committed to developing the first mirror identity blockchain. Usechain incorporates many innovative technologies such as RPOS (Randomized Proof of Stake), a multi-tiered sharded network , Identity Virtual Machine (IVM), integration with government identity, and a social network based credit making/lending/securitizing system on which many real-life applications may be built(including finance, IOT, supply chain, social network, and games). Usechain is built for applications. Real identity Decentralized Applications (“DApps”) and Smart Contracts will be a crucial bridge for connecting the existing business world with the blockchain world. In the Usechain ecosystem, we will provide mobile services with third party developers, including mobile wallets, mobile DApp store, mobile smart contract applications, etc. In addition, we encourage third party developers to join us and help develop mobile blockchain services for Internet users. Usechain will define future blockchain ecosystems.