Great Wall Chain (CCY) is a public chain and weak center traceability system for bulk commodities based on blockchain and traceability technology. A solution of blockchain technology and new concept commodity traceability has been proposed and implemented to address the problems in the traditional commodity industry. Solve the problems of product quality fidelity, accountability, and lack of trust, strengthen the value enhancement of the entire industry and the liquidity of industry assets. Through the application of CCY and community promotion, we aim to popularize and accelerate the dissemination of commodity related industry applications, forming a new and unique commodity cultural ecology.CCY is a token issued based on Ethereum ERC20 standard. The holding of CCY represents its credit value in CCYChain community and its value in the community. The ERC20 token will be used for community construction in the early stages of 1.0, 2.0, and 3.0. After the main network is launched, CCY will map the ERC token to CCYChain token, and receive rewards from the foundation for early participants....