Optimus Youliu Chain is a public chain based on EOS underlying technology designed for logistics industry applications. It aims to provide simple, low-cost, high-efficiency, safe and reliable blockchain solutions for the entire logistics industry through the characteristics of blockchain technology. The OPT DAPP development engine aims to modularize the collaboration process and interaction among the multi-party participants in the entire logistics process. Participants can quickly complete the development and deployment of DAPP through module combination and compilation. Restricting the use of each data through authorization will gain benefits, which not only ensures the privacy of the data, but also allows the data to flow, form a linkage effect, exert greater value and bring new data value benefits. The OPT DAPP development engine aims to modularize the collaboration process and interaction among the multi-party participants in the entire logistics process. Participants can quickly complete the development and deployment of DAPP through module combination and compilation.