Recently, DePIN (Decentralized Physical Infrastructure Network) has attracted attention. It integrates the three core technologies of blockchain, Internet of Things, and token economics, bringing challenges such as decentralization, scalability, and verifiability. . In response to these problems, the IoTeX core team proposed a rollup-centered scalable architecture for off-chain data computing - W3bstream. This architecture significantly improves the throughput and efficiency of DePIN applications by efficiently managing data preprocessing and supporting aggregate proof generation. Although W3bstream relies on the IoTeX blockchain, it can support any existing DePIN project on any blockchain, becoming an important part of the decentralized network ecosystem.