Mixin Network is a free and lightning fast peer-to-peer transactional network for all digital assets. As an innovative underlying operating system, Mixin Network provides the best solution for distributed cross-chain. The goal is to solve the scalability problem of the blockchain. Based on TEE and BFT-DAG technology, Mixin Network solves the problems of transaction throughput and transaction speed of blockchain and makes other blockchain networks such as BTC/ETH achieve infinite concurrency and second level confirmation. It can make blockchain faster, simpler, and more widely used on a larger scale.