Polar Chain aims to make use of blockchain technology to build a more efficient, stable and scientific edge computing platform. Adhering to the principle of "equality for all" in blockchain, achieving proof of effective resource contribution, namely Proof Of Useful Work (POUW). Polar Chain collects idle resources such as bandwidth, computing, and storage, making everyone a edge computing node. Each edge node can process, execute nearby businesses, and earn revenue. We rely on countless nodes to form a decentralized peer-to-peer edge computing platform, and eventually become a super edge cloud Polar Chain.Polar Chain is committed to building a complete ecosystem within decentralized peer-to-peer edge platforms, reconstructing existing internet models, achieving value circulation and enhancement, and completing the "last mile" of Web 3.0....