METHOD FOR APPROVING THE USE OF CREDIT CARD BY USING TOKEN ID BASED ON BLOCKCHAIN AND MERKLE TREE STRUCTURE RELATED THERETO AND SERVER USING THE SAME

摘要

The present invention relates to a method for approving usage of a card by using a token ID, which can minimize the risk of exposing card information, comprising: a step (a) of acquiring a push token ID or a data message, and requesting a user terminal for an authentication for order data or supporting another device to request the same; a step (b) of managing third and fourth block chain transaction IDs; and a step (c) of managing fifth and sixth block chain transaction IDs, and transmitting approval result information to at least one of a service providing terminal and the user terminal, or supporting another device to transmit the same.