The present application relates to a
blockchain-based cross-border trade
electronic document storage and
verification method and
system, relating to the field of data storage based on
blockchain, the
system comprises: an account management module for establishing a plurality of unified
authentication trusted accounts through a plurality of
blockchain nodes and managing permissions; a document checking module for receiving an upload request of the unified
authentication trusted account, determining the category of the
electronic document according to the uploaded
electronic document, checking the electronic document, and determining the secret level of the electronic document; a document management module for storing the electronic document to the blockchain through a
smart contract according to the category and secret level of the electronic document; and a
document retrieval module for receiving a
document retrieval request initiated by the unified
authentication trusted account, querying the target electronic document, and feeding back, which has the advantages of realizing
electronic filing and management of the document, reducing the use of paper documents, improving
management efficiency, and reducing the risk of document loss.