Access control system with blockchain network and smart contract

摘要

The present invention relates to a blockchain network and an access control system with a smart contract using the same. The access control system using the access control system including the blockchain network to verify the user′s authentication information for the user′s access request and manage an access control record comprises: a user terminal requesting a door access approval by a user; a system server checking an access authority from the received authentication information of the user according to the access request of the user terminal, and when the access request is approved, providing an approval signal to a door control device and storing an access record of the user; a blockchain network storing a hash value of the access record of the user received from the system server; and a manager terminal requesting the access control record to be viewed with the administrator authentication information to the system server, and receiving and confirming the access control record from the system server. Thus, the present invention can minimize the size of data stored on the blockchain and reduce costs.