Distributed Ledger Device and Distributed Ledger Method for Sharing User Information using Blockchain

摘要

The present invention relates to a distributed ledger device for sharing user information based on a blockchain, a distributed ledger method thereof, a transaction information broadcast device and a method thereof. To this end, the distributed ledger method comprises: a storage request receiving step of receiving a user information storage request transaction including user information which is changed with regard to a specific user at a first account in a blockchain; a storage step of storing the user information based on the user information storage request transaction; a user information check request step of receiving a user information check query which is a request related to user information check at a second account in the blockchain; and a user information transmitting step of transmitting the user information from the second account.