ReapChain aims to establish a safe and transparent IoT ecosystem by blockchainfying the end-to-end section of the IoT industry.ReapChain is a hybrid blockchain with a Shell-Core Structure. It solves the trilemma of existing blockchains and tries to implement the integration of the blockchain and IoT industry by resolving the security and mass data processing problems of the existing IoT market through PID of things and distributed storage service of ReapMiddleChain.