KR-20260065795-A - Method for providing a blockchain network-based second-hand device trading service and second-hand trading service server device

KR20260065795AKR 20260065795 AKR20260065795 AKR 20260065795AKR-20260065795-A

Abstract

A service server device providing a second-hand trading service based on a blockchain network system, comprising: one or more memories storing instructions for performing a predetermined operation; The present invention provides a server device for providing a second-hand trading service, comprising a processor configured to execute the instructions and connected to one or more of the above-mentioned memories to be operable, wherein the processor generates a first smart contract to issue a token associated with a device, verifies the management data when management data of the device is shared from a first user terminal, generates and transmits a transaction to the blockchain network system to record the management data of the device in a block for the token of the blockchain network system, and when a request to verify the management data of the device is received from a second user terminal, transmits a transaction requesting data to the blockchain network system, receives a query result of the data from the blockchain network system and transmits it to the second user terminal, and when a purchase request for the device is received from the second user terminal, transmits the purchase request for the device to the first user terminal, and when the purchase request is established, generates a second smart contract to transfer the token from the blockchain account of the first user terminal holding the token to the blockchain account of the second user terminal to purchase the device.

Inventors

박병선
피찬호

Assignees

엘지전자 주식회사

Dates

Publication Date: 20260511
Application Date: 20230904

Claims (10)

In a service server device providing a second-hand trading service based on a blockchain network system, One or more memories storing instructions for performing a predetermined operation; and a processor connected to the one or more memories to be operable and configured to execute the instructions, comprising The above processor is, Create a first smart contract to issue a token linked to the device, and When management data of the device is shared from the first user terminal, the management data is verified, and a transaction is generated and transmitted to the blockchain network system, and the management data of the device is recorded in the block for the token of the blockchain network system. When a request to verify management data of the device is received from the second user terminal, a transaction requesting data is transmitted to the blockchain network system, and the result of querying the data is received from the blockchain network system and transmitted to the second user terminal. When a purchase request for the device is received from the second user terminal, the purchase request for the device is transmitted to the first user terminal, and A server device providing a second-hand trading service characterized by generating a second smart contract that transfers the token from the blockchain account of a first user terminal holding the token to the blockchain account of a second user terminal purchasing the device when the above purchase request is established.
In paragraph 1, The above token is, A server device providing a second-hand trading service characterized by including an NFT and issuing it upon the first use of the device in a form mapped with the unique information of the device.
In paragraph 1, Sharing the management data of the above device is, A first route directly shared from the above device having communication capabilities; A server device providing a used goods trading service, further comprising a second route shared from a service center terminal that maintains the above device.
In paragraph 3, The management data of the device shared through the first route above is, A server device providing a second-hand trading service characterized by including at least one of the usage frequency, actual usage time, and usage period of the above device.
In paragraph 3, The management data of the device shared through the above second route is, A server device providing a used goods trading service characterized by including a periodic diagnosis or repair history of the above-mentioned device.
In a method for providing a second-hand trading service based on a blockchain network system, A step of requesting device ownership authentication and token generation associated with the device at a first user terminal; When ownership authentication of the above device is completed, a step of transmitting a request for token generation associated with the above device from the seller terminal to the used goods trading service server; A step of receiving the token creation request from the above-mentioned used goods trading service server and creating a first smart contract that issues a token linked to the device to the blockchain account of the first user terminal in the above-mentioned blockchain network system; A step of issuing a token associated with the device according to the first smart contract; The step of the first user terminal sharing the management data of the device with the used goods trading service server; The above-mentioned second-hand trading service server verifies the management data of the device and records the management data of the device in a block for a token associated with the device; and A step in which a second user terminal checks the management data history of the device through the used goods trading service server and purchases the device; A method for providing a second-hand trading service characterized by including
In paragraph 6, The above token is, A method for providing a second-hand trading service characterized by including an NFT and issuing it at the time of the first use of the device in a form mapped with the unique information of the device.
In paragraph 6, A first route step in which the above-mentioned device having a communication function directly shares the management data of the above-mentioned device with a used goods trading service server; A second route step in which a service center terminal maintaining the above device shares management data of the above device; and The above-mentioned used goods trading service server performs the step of recording the management data of the shared device in a block for a token associated with the device; A method for providing a second-hand trading service characterized by further including
In paragraph 8, The management data of the device shared through the first route is, A method for providing a second-hand trading service characterized by including at least one of the usage frequency, actual usage time, and usage period of the above-mentioned device.
In paragraph 8, The management data of the device shared through the second route above is, A method for providing a used goods trading service characterized by including a periodic diagnosis or repair history of the above-mentioned device.

Description

Method for providing a blockchain network-based second-hand device trading service and second-hand trading service server device **Method for providing a blockchain network-based second-hand device trading service and second-hand trading service server device** The present invention relates to a method for providing a blockchain network-based second-hand device trading service and a second-hand trading service server device. More specifically, the invention relates to a service that allows verification of the device's management data history during second-hand trading by recording the device's management data in a block of an NFT linked to the device on a blockchain network. The size of the second-hand market was 25 trillion won in 2022, and it is growing rapidly every year, with the market size expected to reach 43 trillion won by 2025. With the growth of the second-hand market, terms related to second-hand trading, such as "second hand" and "resale," are gaining attention, and there is a growing trend emphasizing the significance of second-hand trading as a form of conceptual consumption and a contribution to environmental sustainability. In line with the era of high inflation, the second-hand market is expected to expand in scale and globalize due to advancements in information technology, thereby having a significant socio-economic impact. However, due to an incomplete system, the current second-hand trading market continues to face various problems, including fraud. Typical second-hand trading platforms effectively remain at the level of providing an online space to verify the information of sellers and buyers; as transactions rely on mutual trust between the parties, fraud cases continue to rise, and the market is limited to transactions such as direct sales. However, the blockchain technology of the present invention is a technology that provides reliable management records of used goods even without an intermediary, and can safely perform transactions by replacing intermediaries through a consensus process among multiple individuals and storing the verified content in a ledger with a blockchain structure. Blockchain is a data tamper-proof technology based on distributed computing, in which managed data is stored in a distributed data storage environment based on chain-like links created using a P2P method, preventing any arbitrary modification by anyone and allowing anyone to view the results of changes. As a change list recording continuously changing data across all participating nodes, blockchain is designed to make arbitrary manipulation by the operators of the distributed nodes impossible. FIG. 1 is a diagram illustrating a blockchain network according to an embodiment of the present invention. FIG. 2 is a flowchart of an operation performed by a service server according to an embodiment of the present invention. FIG. 3 is a configuration diagram of a used goods trading service system and a blockchain network system according to one embodiment of the present invention. FIG. 4 is an example diagram of linking a physical asset device and an NFT in a method for providing a second-hand trading service according to one embodiment of the present invention. FIG. 5 is an example diagram of sharing management data history to an NFT connected to a physical device according to one embodiment of the present invention. FIG. 6 is an example diagram of an NFT viewer provided by a second-hand trading service server according to one embodiment of the present invention. FIG. 7 is a block diagram of a used goods trading service server according to one embodiment of the present invention. In relation to the description of the drawings, the same or similar reference numerals may be used for identical or similar components. Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are given the same reference number, and redundant descriptions thereof will be omitted. The suffixes "module" and "part" for components used in the following description are assigned or used interchangeably solely for the sake of ease of drafting the specification, and do not inherently possess distinct meanings or roles. Furthermore, in describing the embodiments disclosed in this specification, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions could obscure the essence of the embodiments disclosed in this specification. In addition, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included. Terms including ordinal numbers, such as f