Method for paying cost of iot device based on blockchain and merkle tree structure related thereto, and server, service providing terminal, and digital wallet using the same

Patent metadata

Field	Value
Publication number	US-2022083993-A1
Application number	US-202117535170-A
Country	US
Kind code	A1
Filing date	Nov 24, 2021
Priority date	May 10, 2017
Publication date	Mar 17, 2022
Grant date	—

Abstract

A method of a payment for an Internet of Things (IoT) device is provided. The method includes steps of: a payment supporting server (a) on condition that the payment supporting server has registered certificates of the IoT device, a service providing device, and a digital wallet in a first blockchain, manages their transaction IDs, has registered a representative hash value in a second blockchain, manages their transaction IDs, and manages link information between the IoT device and the digital wallet, confirming validity of a billing transaction, and (b) acquiring identification information on the digital wallet; and (c) paying the billing detail using the digital wallet, registering its payment result in the first blockchain, registering in the second blockchain, if one anchoring condition is satisfied, a first representative hash value, and transmitting the payment result to the service providing device, the IoT device, and the digital wallet.

First claim

What is claimed is:

1 . A method of a payment for an Internet of Things (IoT) device, comprising steps of:
(a) performing, by a digital wallet of a user, on condition that a payment supporting server (I) has registered a certificate of the IoT device, a certificate of a service providing device and a certificate of the digital wallet in a first blockchain database, and manages their corresponding first, second and third blockchain transaction IDs of the certificate of the IoT device, the certificate of the service providing device and the certificate of the digital wallet registered in the first blockchain database, and (II) has registered each of representative hash values calculated by using (II-1) each of specific hash values acquired by applying a hash function to each of the certificates and (II-2) each of at least one neighboring hash values which is each of at least one hash values of each of at least one other transactions registered in the first blockchain database in one of anchoring conditions, in a second blockchain database, and manages their corresponding fourth, fifth and sixth blockchain transaction IDs of the representative hash values registered in the second blockchain database, processes of (i) acquiring identification information on the IoT device from the IoT device in response to a link-connection requesting signal from a user device, and displaying a confirmation requesting signal on whether a link between the IoT device and the digital wallet as a payer therefor is to be established on the user device, (ii) transmitting, when a link-connection instructing signal on the link is acquired from the user device, a link-connection requesting transaction to the payment supporting server, wherein the link-connection requesting transaction includes identification information on the digital wallet, the identification information on the IoT device and a signature value for identification acquired by signing the identification information on the IoT device with the certificate of the digital wallet, to thereby allow the payment supporting server to (1) verify the IoT device corresponding to the identification information on the IoT device included in the link-connection requesting transaction, (2) connect the link when the IoT device is determined as valid, (3) register link information on the link in the first blockchain database and manage its corresponding first link-info blockchain transaction ID of the link information registered in the first blockchain database, (4) (4-1) register in the second blockchain database, when one of the anchoring conditions is satisfied, a fourth representative hash value calculated by using (i) a fourth specific hash value acquired by applying the hash function to the link information and (ii) its corresponding at least one neighboring hash value, (4-2) manage its corresponding second link-info blockchain transaction ID of the fourth representative hash value registered in the second blockchain database, and (4-3) transmit the link information to at least one of the IoT device and the digital wallet; and (b) performing, by the digital wallet, when a confirmation requesting transaction on a billing detail corresponding to the identification information on the digital wallet is acquired from the payment supporting server, processes of (i) displaying a confirmation requesting signal for the billing detail through a display of the user device, and (ii) transmitting, when a confirming signal of the user on the billing detail is acquired from the user device, a confirming transaction including the identification information on the digital wallet and a signature value for verification acquired by signing a value for verification with the certificate of the digital wallet to the payment supporting server, to thereby instruct the payment supporting server to (I) verify the confirming transaction, and (II) transmit amount of the billing detail to a fund source server corresponding to the digital wallet or determine an advance payment prepared for the IoT device to be used, when the confirming transaction is determined as valid, wherein the confirmation requesting transaction is generated at the payment supporting server via acquiring the identification information on the digital wallet corresponding to the identification information on the IoT device included in a billing transaction for the IoT device retrieved from the first blockchain database by referring to the link information, in response to the billing transaction which additionally includes the billing detail, a signature value for billing acquired by signing the billing detail with the certificate of the service providing device and the identification information on the service providing device acquired from the service providing device, and wherein the confirmation requesting transaction further includes the billing detail, the identification information on the digital wallet and the value for verification, wherein, the anchoring conditions include at least one of (i) a condition that one or more transactions related to the payment for the IoT device are created a certain number of times, (ii) a condition that a certain amount of time is elapsed, (iii) a condition that a block is created in the first blockchain database, and (iv) a condition that has at least one of characteristics of services.

2 . The method of claim 1 , before the step of (b), further comprising steps of:
(b01) performing, by the digital wallet, processes of acquiring the identification information on the IoT device from the IoT device by referring to a registering signal for the advance payment from the user device, and of displaying a confirmation requesting signal for registration of the advance payment through the display of the user device; and (b02) transmitting, by the digital wallet, when a registration confirming signal of the advance payment is acquired from the user device, a registration requesting transaction including the identification information on the digital wallet, the identification information on the IoT device, information on a registration request for the advance payment and a signature value for request acquired by signing the information on the registration request with the certificate of the digital wallet to the payment supporting server, to thereby instruct the payment supporting server to (I) verify the registration requesting transaction, (II) register the advance payment for the IoT device by approving payment for the information on the registration request by using the digital wallet corresponding to the identification information on the digital wallet included in the registration requesting transaction when the registration requesting transaction is determined as valid, (III) register a result of an advance payment registration in the first blockchain database, and manage its corresponding first payment-info blockchain transaction ID of the result registered in the first blockchain database, and (IV) register in the second blockchain database, when one of the anchoring conditions is satisfied, a third representative hash value calculated by using (IV-1) a third specific hash value acquired by applying the hash function to the result of the advance payment registration and (IV-2) its corresponding at least one neighboring hash value, and manage its corresponding second payment-info blockchain transaction ID of the third representative hash value registered in the second blockchain database, and (V) transmit the result of the advance payment registration to at least one of the IoT device and the digital wallet.

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 us

Assignees

• Coinplug Inc

Inventors

• Uhr Joon Sun
• Hong Jay Wu

Classifications

• G06F16/27

  Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor · CPC title

• H04L9/3265

  using certificate chains, trees or paths; Hierarchical trust model · CPC title

• G06Q20/3674 Primary

  involving authentication · CPC title

• G06Q20/3825

  Use of electronic signatures · CPC title

• G06Q20/14 Primary

  specially adapted for billing systems · CPC title