On December 26, the Digital Economy and Commercial Bank Transformation Summit was held in Zhengzhou. At the forum, Li Lihui, former governor of Bank of China, said that digital technology changes will restructure the economic model. Blockchain can increase the digital trust of business credit. Blockchain solves the trust problem mathematically and expresses rules with algorithm programs. As long as the common algorithm programs are trusted, mutual trust can be established and a "technical endorsement" trust mechanism can be established.