DISTRIBUTED LEDGER DEVICE AND DISTRIBUTED LEDGER METHOD USING USE TIME VERIFICATION TO SHARE USER INFORMATION BASED ON BLOCK CHAIN

摘要

The present invention relates to a distributed ledger device, distributed ledger method, and transaction information broadcasting device and method using use time verification to share user information based on blockchain. A program code of a user information managing account may provide: a storage request receiving step of receiving user information storage request transaction including user information changed for a specific user in a first account within blockchain; a storage step of storing the user information based on the user information storage request transaction; a user information confirmation requesting step of receiving a user information confirming query, which is a request related to user information confirmation in a second account within the blockchain; and a user information transmitting step of transmitting the user information to the second account.;COPYRIGHT KIPO 2019