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

Claim 2:
3. The method of claim 1, wherein the step of (a) includes steps of:
(a01) performing, by the digital wallet, processes of acquiring 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
(a02) transmitting, by the digital wallet, when a link-disconnection instructing signal for disconnecting the link is acquired from the user device, 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;
(I) verifying, by the payment supporting server, the IoT device corresponding to the identification information on the IoT device included in the disconnection requesting transaction,
(II) disconnecting, by the payment supporting server, the link when the IoT device is determined as valid,
(III) registering, by the payment supporting server, 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,
(IV) registering, by the payment supporting server, in the second blockchain database, when one of the anchoring conditions is satisfied, a fifth representative hash value calculated by using (IV-1) a fifth specific hash value acquired by applying the hash function to the disconnection information and (IV-2) 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 (V) transmit the disconnection information to at least one of the IoT device and the digital wallet.