Project Chain is a decentralized project application platform. It will provide a series of SDK, API and front-end programs to help users build decentralized applications based on JavaScript and side chain technology. Project Chain is committed to creating an easy-to-use, fully functional, plug-and-play system by providing integrated project industry solutions such as custom side chains, smart contracts, and application hosting. Using the project ecosystem, project companies can quickly build their own blockchain, issue tokens, select smart contract sets, build and release DAPPs suitable for their own use. The whole process will be guaranteed by the honest and safe project main chain and side chain consensus network. In order to support the high-concurrency transaction environment in the new field and achieve decentralization to the greatest extent, the project chain (PRCC) creatively proposes a main chain + side chain, an organically operating blockchain solution. The main chain of the project chain adopts a strong consensus POS consensus mechanism, including a token issuance system and a complete main-side chain communication mechanism. The side chain adopts an efficient DCD consensus mechanism, and runs the smart contract set of the project field business on the side chain. Under such a structure, each project enterprise will have an independent side chain. While ensuring the efficient operation of each subsystem, it will not affect the performance and security of the main chain of the project chain, making the digital asset ecosystem of the project chain obtain A high degree of scalability is sufficient to support the performance requirements of the blockchain in the project field.