On April 16, China Construction Bank released a total of 21 financial technology project needs in Shenzhen, which fully stated the bank's demand direction in the Fintech field. CCB proposed that there are many problems in the process of handling and custody of the unit time deposit account opening confirmation, which frequently triggers major risk cases. The role of the confirmation book is relatively limited and there are many potential risks. For this reason, CCB proposed to realize the electronic confirmation of the unit time deposit account opening certificate. At this stage, the blockchain technology has entered the application stage. In the future, it is hoped that the blockchain technology will be used to develop blockchain verification documents, and the various risks of the unit time deposits will be controlled from the source.