METHOD FOR SETTLING EXPENSE ON IoT DEVICE THROUGH BLOCKCHAIN DATABASE AND MERKLE TREE STRUCTURE INTERLOCKING WITH BLOCKCHAIN DATABASE AND SERVER, SERVICE PROVIDING TERMINAL, AND USER DIGITAL WALLET USING SAME

摘要

The present invention provides a method for settling expense on an IoT device. The method comprises the steps of: (a) registering a certificate of an IoT device, a certificate of a service providing terminal, and a certificate of a user electronic wallet in a first block chain database; (b) supporting a settlement support server to obtain identification information of the user electronic wallet from the first block chain database; and (c) using a payment means of the user electronic wallet to make payment for a billing history.;COPYRIGHT KIPO 2018