CERTIFICATE ISSUANCE SYSTEM BASED ON BLOCKCHAIN TECHNOLOGY AND CONTROL METHOD THEREOF

摘要

The present invention relates to a blockchain technology-based document issuance system and, more particularly, to a system for issuing an electronic document. The electronic document issuance system includes: a main blockchain including a plurality of main nodes; a sub blockchain including a plurality of sub nodes; a certificate request server requesting certificate issuance; and a certificate issuance server generating a certificate in response to the issuance request from the certificate request server. The certificate issuance server transmits a first transaction on the generation of the certificate to a first main node. The main blockchain transmits the first transaction received by the first main node to the sub blockchain. The certificate request server transmits a validation query of the first transaction to a first sub node.