Butterfly Protocol (BPAY) is an ecological public chain based on blockchain technology, a service cross-border e-commerce platform based on blockchain thinking and financial thinking. The technical architecture includes the basic technology layer, the super exchange protocol layer and the application layer. Among them, the basic technology layer includes blockchain, distributed storage network, atomic hash, Internet of Things and AI, etc.; the super exchange protocol layer includes digital identity and credit, supply chain, digital marketing, transaction and payment, trusted physical channel , supply chain and smart contracts, etc.; the application layer includes wallets, shopping malls, logistics, finance and insurance, etc. At the same time, a series of basic technologies will be developed to support the super transmission protocol. The super exchange protocol is a basic business protocol cluster that supports the operation of upper-layer applications. Finally, consumers, merchants, and developers can participate in the commercial operation of the Butterfly Protocol through their own behaviors, and realize the symbiosis and co-prosperity of the consumption ecology.