"China Finance", the 21st issue of 2019, issued the article "Proactively responding to the challenges of opening up banks" by Ma Zhitao, deputy governor and chief information officer of Weizhong Bank. The article said that banks can quickly build chain cooperation through cutting-edge blockchain technology to improve the connection efficiency of multiple partners. At present, the FISCO BCOS alliance chain open source platform jointly developed by Weizhong Bank and other gold chain alliances has realized the “group architecture” function. In the ecology of a certain type of business, there are often different blockchain books due to different specific partners. This function allows each participant to quickly select the data sharing and consensus process for the corresponding ledger according to the needs of the business relationship. It makes the construction of the chain as simple and fast as building a chat group, greatly improving the connection efficiency. At the same time, the participating parties can truly achieve peer-to-peer and transparent cooperation through the alliance chain, and the rights, privacy and security are guaranteed, and the trust cost and operation management cost in the cooperation process are also greatly reduced.