Patent ID: 11961057
Assignee: CPLABS, INC.
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 5:
6. The system of claim 4, wherein the user device is further configured to:
(i-01) acquire the identification information on the IoT device from the IoT device by referring to a link-disconnection requesting signal from the user device, and of displaying a confirmation requesting signal for disconnecting the link through the display of the user device; and
(i-02) transmit a disconnection requesting transaction including the identification information on the digital wallet, the identification information on the IoT device and a signature value for request acquired by signing the identification information on the IoT device with the certificate of the digital wallet to the payment supporting server;
the payment supporting server is further configured to:
verify the IoT device corresponding to the identification information on the IoT device included in the disconnection requesting transaction;
disconnect the link when the IoT device is determined as valid;
register disconnection information in the first blockchain database, and manage a corresponding first link-disconnection blockchain transaction ID of the disconnection information registered in the first blockchain database;
register in the second blockchain database, when one of the anchoring conditions is satisfied, a fifth representative hash value calculated by using a fifth specific hash value acquired by applying the hash function to the disconnection information and a corresponding at least one neighboring hash value, and manage a corresponding second disconnection-info blockchain transaction ID of the fifth representative hash value registered in the second blockchain database; and
transmit the disconnection information to at least one of the IoT device and the digital wallet.