requires changes to the whole stack all the way to the applications. Celer Network draws inspiration from the success of layered network architecture from the Internet and push for a clean abstraction of a four-layered payment network architecture consisting of Channel Management, Payment Routing, Payment Transport and Application Runtime. This architecture enables flexibility and more importantly, independent, and fast evolution on each layer. Within this clean network architecture, Celer Network provides innovative solutions on all layers, with highlights of cChannel, cRoute and cOS .