POCS (Point of Chain Sales) is a digital asset issued by Singapore China Chain Foundation based on Ethereum ERC-20 protocol. Committed to changing the current situation of the domestic third-party payment industry, improving the order of the domestic bank card acquiring environment, and increasing the stickiness of receiving terminals towards merchants. The POCS payment chain uses tokens to solve the problem of information asymmetry in the distribution of profits between upstream and downstream channels in the payment industry (i.e. the commission returns returned by payment institutions), making the distribution data of channel service providers decentralized and tamper proof, achieving a trust consensus. At the same time, the payment terminals (mining machines) used by merchants can not only meet their normal payment needs, but also provide merchants with an additional amount of token rewards to stimulate their enthusiasm for card swiping. Transforming payment card machines into "mining machines" and making card transactions a form of "mining" behavior.Point of Chain Sales (POCS) is a smart contract token based on ERC20. POCS is a reward for all participants in the entire payment ecosystem, allowing users to freely trade after receiving tokens....