Abstract: With the block-chain technology rising to the national strategy,the application of block-chain in various industries has gradually emerged,including the construction of college credit system.Their characteristic such as the decentralization of the block-chain,traceability,and the authenticity,and transparency coincides with the application of block-chain technology to the construction of college credit files.It is conducive to enhance the integrity of college readers and consciously reduce or eliminate dishonesty.This paper puts forward the data structure storage model based on the application of block-chain in the construction of college credit archives.It elaborates on the content of readers'borrowing integrity,performance integrity and academic integrity,and analyzes the entry of block-chain technology and its specific steps.The digital signature technology that can protect private data during data transmission is also studied to solve the credit authentication problem of the sender and receiver of the data.All these results would provide example for the integration of college credit files into the social credit system.

Key words: block-chain；colleges and universities；library；integrity；credit