We all know that there are several credit systems in the world now: one is to solve the credit problem based on morality and through the bottom line constraint of morality. Second, based on faith, I believe that God's arrangement is absolutely fair. Third, the banking system is based on the government. As long as the government of each country exists, the number of the bank where people's money is located is valuable and can be used as a medium of commodity exchange. When shopping, the transaction amount will be hosted on a third-party platform. After the transaction is successful, the seller can get the money paid by the buyer, based on the credit guarantee of the banking system.
After the emergence of blockchain, another cornerstone of the credit system in the world-algorithm. The word algorithm comes from a concept in the computer field, and its characteristic is consistency. No matter when and where, as long as the input is determined, the output must be determined after the algorithm, which is the basic definition of algorithm consistency. Blockchain is a new credit system based on this feature.