Guess Chain (Guess Chain) is a fully open source, distributed, competition prediction, public chain of the chess and card market. Its architecture model consists of efficient smart contracts, DPOS consensus mechanism, competition chain applications, full node wallets, Composed of DApp mobile terminal and block browser. The underlying blockchain system of the industry alliance developed on the basis of inheriting the characteristics and advantages of Bitcoin and Ethereum. The competition chain uses blockchain technology and combines the characteristics of the blockchain to build a decentralized, fair, open, and just ecological chain, subverting the traditional competition prediction industry and chess and card game industry, and simultaneously acting as a "manager" and "manager" for the previous traditional models. revolutionize the dual role of "arbiter". The competition chain aims to provide enterprise-level blockchain infrastructure and industry solutions to help the traditional competition industry and chess and card game industry solve many pain points such as fraud, opaque game rules, insecure information privacy, and hacker attacks. Establish a competition ecological chain with a fair and just environment, data security and credibility, protection of personal privacy, communication compatibility, performance optimization, and decentralized control. Token GUS can be used for event prediction and trading.