Abstract: This paper explores the construction method of college credit bank based on blockchain technology. On the basis of investigation, this paper summarizes the common problems in the operation of credit banks in colleges and universities, such as low efficiency of credit certification and conversion, weak coordination ability of multiple entities, and puts forward the method of applying blockchain technology to build credit banks. The results show that distributed ledger technology, smart contract technology and time stamp technology in blockchain play an important role in the construction of college credit bank, which provides convenience for the recording, authentication and conversion of learning results. The research shows that it is feasible to apply blockchain technology to build college credit bank.

Key words: Blockchain technology, Credit bank, Smart contracts, Certification of learning outcomes, Multiple subjects, Side chain data structure