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Construction of Information Resource Security Sharing Model Based on Digital Library Alliance Chain

��[Purpose/significance] In view of the information island appearing in the development process of digital library, an attempt is made to construct a new type of digital library information resource security sharing model, break down the direct barriers between resource owners and demanders, and improve the current situation of resource sharing in digital libraries.[Method/process] Using the blockchain alliance chain technology, the paper constructs the information resource security sharing model based on the digital library alliance chain, and discusses the basic structure, technical means, functional requirements, sharing mechanism and other contents of the model. Then it analyzes its characteristics and advantages.[Result/conclusion] The digital library information resource security sharing model constructed in this paper has the characteristics of high security, good interoperability and good operational efficiency, which can effectively solve the problem of information island and promote the safe sharing of information resources.