KR20230061869A - Used car platform server apparatus operated based on blockchain-based refueling history information and operating method of said apparatus - Google Patents

Abstract

One aspect of the present invention discloses a method of operating a used car platform server providing refueling history information. The method includes the steps of receiving vehicle information related to used car transactions from a user terminal, acquiring fuel-related transaction information corresponding to the vehicle information from a blockchain (the fuel-related transaction information is (recorded on the blockchain in conjunction with payment) and providing gas-related transaction information corresponding to the vehicle information to the user terminal, wherein the gas-related transaction information is actual payment information and a target of a fueling action. The vehicle information to be matched and recorded on the blockchain.

Description

Used car platform server device operated based on blockchain-based refueling history information and method of operating the device

The present invention relates to a used car platform server device, and more particularly, to a system for providing oil transaction information together with used car vehicle information.

In modern society, automobiles are not just a means of transportation, but are also used as a means of representing one's social and economic position. Accordingly, automobiles have a high property value.

Cars with such high property value are stolen every year due to crime, and in the used car market, there are false sales that deceive and trade cars with accident records as if they were normal cars, or sell cars that are not actually sold. there is. In particular, recently, various fuel additives such as Cerox have been sold, and among them, there are many low-quality ones, so there is a need to accurately check the type of fuel used in the car and information on whether it is genuine in the used car market. .

Conventional technology for recording history related to vehicles utilizes a vehicle identification number to implement anti-theft and also utilizes a performance record inspection unit to prevent accident history from being hidden. However, in the case of the vehicle identification number, it is difficult for car owners to check the hidden vehicle identification number, so it is difficult to use it because they do not know their vehicle identification number well. However, since it does not record all information of the vehicle, there is a problem that the refueling history cannot be clearly preserved.

An object according to one aspect of the present invention for solving the above problems is to provide a system that blocks the possibility of forgery and alteration of information traded in relation to fueling and records transaction information generated in real time by block chaining.

According to an aspect of the present invention for achieving the above object, a method of operating a used car platform server providing refueling history information includes receiving vehicle information related to used car transaction from a user terminal, refueling corresponding to the vehicle information Acquisition of related transaction information from a blockchain (the gas-related transaction information is recorded on the blockchain in association with payment for a gas-fueling act) and the gas-related transaction information corresponding to the vehicle information to the user Including the step of providing to a terminal, the fueling-related transaction information may be recorded on the blockchain by matching actual payment information with vehicle information that is a target of a fueling action.

The step of receiving vehicle information related to used car transaction from the user terminal may include uploading vehicle information for selling used cars in the user terminal of the used car seller.

The step of receiving vehicle information related to a used car transaction from a user terminal may include inputting vehicle information for a used car purchase in a user terminal of a used car buyer.

The providing of the vehicle information and corresponding fueling-related transaction information to the user terminal may include providing the vehicle information uploaded for sale of the used car and the fueling-related transaction information together.

Based on the information related to the driving distance of the vehicle and the transaction information related to fueling, a result of determining the reasonableness of the driving distance relative to the fueling amount may be obtained and provided to the user terminal.

The determination result may include a result of whether the genuine oil type was used in correspondence with the fuel oil type.

The method may further include recording payment information related to the used car transaction on the blockchain in response to payment for the used car transaction using the vehicle information.

The used car transaction-related payment information may be matched with the vehicle information and the fueling-related transaction information and recorded on the blockchain.

The transaction information related to the fueling can be recorded in the block chain in real time as soon as the actual payment occurs.

The transaction information related to refueling includes distribution information of oil to be refueled, and the distribution information uploads at least one of refining process-related information and distribution process-related information on a blockchain by an oil refinery terminal or an oil distributor terminal. can be provided by

According to another aspect of the present invention for achieving the above object, a used car platform server device for providing fueling history information receives vehicle information related to used car transactions from a user terminal, and provides fueling related transaction information corresponding to the vehicle information A processor for acquiring from a blockchain and providing fuel-related transaction information corresponding to the vehicle information to the user terminal, and a memory for storing instructions related to the operation of the processor, the fuel-related transaction information , is recorded on the blockchain in conjunction with payment for fueling, and the fueling-related transaction information can be recorded on the blockchain by matching actual payment information with vehicle information that is a target of fueling.

According to the used car platform server device for providing refueling history information of the present invention, reliability of accumulated information related to refueling is ensured and actively utilized in used car transactions, thereby providing reliable information to both sellers and buyers.

1A is a conceptual diagram showing a system to which a blockchain-based refueling history recording method is applied according to an embodiment of the present invention;
Figure 1b is a conceptual diagram for explaining the process of recording the distribution process from crude oil import to gas station on the block chain in the system of Figure 1a;
2 is a conceptual diagram showing an authentication process using a decentralized ID (DID);
3 is a detailed flow chart showing the process from block chain-based gas reservation to payment in more detail;
4 is a conceptual diagram specifically showing gas payment information and vehicle information recorded in a block chain;
5 is a flowchart showing an algorithm that guarantees the rationality of the driving distance compared to the refueling amount;
6 is a block diagram showing the configuration of a device for executing a blockchain-based refueling history recording method according to an embodiment of the present invention;
7 is a conceptual diagram for explaining a linkage function with a server device that provides a used car trading platform service by utilizing a blockchain-based refueling history record according to an embodiment of the present invention;
8 is a view showing a refueling history information search screen provided by the used car platform server of FIG. 7 .

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, without departing* from the scope of the present invention, a first element may be termed a second element, and similarly, a second element may also be termed a first element. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. In order to facilitate overall understanding in the description of the present invention, the same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

1 is a conceptual diagram illustrating a system to which a blockchain-based refueling history recording method according to an embodiment of the present invention is applied. As shown in FIG. 1, the fueling history recording system according to an embodiment of the present invention includes a gas station terminal 110, a fueling platform server 120, a fueling vehicle user terminal 130, and a blockchain system 140. can do.

Referring to FIG. 1 , a fueling vehicle user terminal 130 may make a fueling reservation in advance using a fueling reservation application provided by a fueling platform server 120 . Here, the fueling vehicle user terminal 130 may include a computing device such as a smart phone, a personal digital assistant (PDA), or a laptop. At this time, vehicle-related information (vehicle owner-related information may also be provided), such as vehicle number and vehicle model, may be provided to the service platform server 120 .

The fueling platform server 120 is a server that provides platform services related to fueling reservations, and provides reserved fueling services for a plurality of users. The server 120 provides not only personal information, gas-related payment information, and related discount information (coupons, points, and other member benefits-related information) of individual members who have subscribed to the service, but also store information, company information, and payment information of gas station member companies. Line information and the like are stored in the database. The fueling platform server 120 may interoperate with a proxy server (not shown) disposed in the store. The fueling platform server 120 provides fueling reservation information to the terminal 110 of the gas station for which fueling is reserved. The fueling reservation information includes information on which fueling is scheduled at which gas station, at what time, and how much fueling is scheduled. That is, gas station identification information, fueling device identification information, fueling amount information, oil type information, fuel price information, payment amount information, and/or fueling time information are included.

After refueling reservation, when the reserved time arrives, the vehicle visits the corresponding gas station, refuels from the gas station terminal 110, and proceeds with payment. Here, the gas station terminal 110 includes a refueling device disposed in a gas station and/or a payment terminal for refueling. Then, the gas station terminal 110 provides the payment details to the gas platform server 120 . At this time, the gas platform server 120 may upload the payment details to the blockchain system 140 in real time. When uploading, fueling payment details information may be uploaded to the blockchain 140 by matching with vehicle information by referring to fueling reservation information.

In the embodiment of FIG. 1, it is assumed that a fueling reservation is made in advance using the fueling platform server 120, but according to another embodiment of the present invention, it is possible to store fueling details using a blockchain without a fueling reservation do. That is, the gas platform server 120 does not provide a reservation order service, but simply operates as a server that plays a role in connection with the block chain, and provides gas payment information and vehicle information from the gas station terminal 110 and the gas vehicle user terminal 130. It can be acquired and provided to the blockchain system 140.

According to another embodiment of the present invention, without the gas platform server 120 itself, the gas station terminal 110 and the gas vehicle user terminal 130 directly match gas-related payment information as well as vehicle information to a blockchain system ( 140) can be stored. That is, when a gas related payment occurs, the gas station terminal 110 provides payment information to the blockchain system 140. At this time, the gas station terminal 110 may request vehicle information to the user terminal 130 or directly input the fueling user to secure the vehicle information and record it in the blockchain system 140 together with the payment information. there is. In another example, when the gas station terminal 110 stores gas payment information and transmits it to the user terminal, the user terminal 130 that receives it records the vehicle information in association with the gas payment information in the blockchain system 140. By controlling, it is possible to accumulate and record corresponding vehicle information and corresponding refueling information in the blockchain system 140 .

FIG. 1B is a conceptual diagram for explaining a process of recording a distribution process from crude oil importation to a gas station in the system of FIG. 1A on a blockchain.

Referring to FIG. 1B , an oil refinery 150 supplies refined oil to a gas station 110 through a processing facility while importing crude oil. At this time, the refined oil may be distributed through the oil distributor 160. In particular, as for the oil refinery 150, there are four major oil refineries such as SK Energy, GS Caltex, Hyundai Oilbank, and S-Oil. Therefore, in the refinery of a specific oil company 150, information indicating that the oil is of a certain origin may be recorded in the blockchain system 140. In addition, information on which oil refinery was performed and how much oil was secured through the refining process can be recorded on the blockchain system 140 . For example, refined oil types such as kerosene 300L, light oil 200L, gasoline 100L, etc. and the corresponding amount of oil can be recorded.

Then, the refined oil is provided to the oil distributor 160 . At this time, the oil distributor 160 records on the block chain system 140 which oil and how much was obtained from which oil company 150 and which gas station 110 it provided. In addition, the identification information of the distribution company may also be recorded on the blockchain system 140. Through this process, the entire distribution process of the gasoline, diesel, etc. that finally reached the gas station 110 was obtained from which country of origin, through which refinery company's refinery, and through which oil distributor it reached its gas station, block block It can be checked and checked through the chain system 140. This has the effect of confirming the transparency of the distribution process on the oil refinery side and enabling consumers to trust it.

This fuel distribution information or oil distribution information (origin information, refining process information, distribution process information, etc.) is recorded along with fuel transaction-related information (or included in fuel transaction information) and is verifiable information when a user requests it. .

According to an additional embodiment of the present invention, it is possible to issue and manage non-fungible tokens (NFTs) in relation to the distribution of oil. NFT is a virtual asset created by grafting blockchain technology, and the token has a characteristic of having a unique recognition value of a target product (oil in the embodiment of the present invention). In particular, the ownership and transaction history of the NFT-applied oil remains on the blockchain so that a specific person can claim and secure ownership, and the original can be proven through a unique value that cannot be forged or altered.

More specifically, the oil refiner 150 (or other distributor), which distributes the first oil in Korea, is the number of distributions authorized by the government (eg, the Ministry of Commerce, Industry and Energy and/or Korea National Oil Corporation) at the time of the first oil distribution. As many NFTs (Non-Fungible Tokens) can be issued. For example, if oil is 100 liters, 100 NFTs can be issued in units of 1 liter, which is the minimum unit.

The NFTs issued in this way may be simultaneously delivered to an intermediate distributor as much as the distribution volume while going through distribution stages, such as the distributor 160 . NFTs can be held through personal electronic wallets of intermediary distributors.

And, at the final stage of distribution, when purchasing oil to refuel a vehicle, the corresponding NFT can be delivered to the final consumer (the owner of the fueling vehicle), and the consumer can store it in their electronic wallet. In this way, the blockchain main network can be configured as an NFT-based system. In other words, oil-related transaction details can be recorded on the blockchain in a manner in which NFTs are transferred and stored.

2 is a conceptual diagram illustrating an authentication process using a decentralized ID (DID).

Referring to FIG. 2 , a gas station operator 220 and a vehicle owner 230 may receive services provided by a gas platform server 240 by registering a DID from an identification authority 210 and receiving identity authentication, respectively. Chain system 250 is also accessible. However, it does not necessarily have to be operated with DID. However, DID can be applied to minimize exposure of personal information, and can be generated with some of personal information.

First, in order to register a DID document, the terminals of the identity authentication authority 210, gas station operator 220, and vehicle owner 230 each use a public key infrastructure (PKI)-based key pair (private key and public key). (including public key) is created, the private key is stored in the electronic wallet of the corresponding terminal, and a DID document is generated using the public key, and then stored in the blockchain 250. Basically, a DID document contains information related to the identity subject, how this information can be verified, a set of public keys for the DID, a set of authentication protocols, and a set of service endpoints that can communicate or interact with the entity. can include One of the advantages of DID is that since DIDs are created and managed by individuals themselves, they can manage not to include information that they deem unnecessary or do not want to disclose. The DID document stored in the blockchain 250 can be shared with the related companies and related organizations described above through the blockchain network. The blockchain 250 stores the Revocation Registry that includes DID documents and information for revocation of identity verification.

According to an embodiment of the present invention, in order to record a fueling history and/or make a fueling reservation based on a blockchain that is more reliable and secure, the vehicle owner 230 may include vehicle-related information in the DID document. Through this, upon identity authentication, information related to the individual identity subject and vehicle information corresponding thereto may be included, and the information may be matched with personal identity information and processed not only for identity authentication but also for refueling reservations later.

After each vehicle owner 230 of the identity authentication authority 210 registers a DID document in the blockchain, the vehicle owner 230 receives a VC from the identity authentication authority 210 . To this end, the vehicle owner 230 transmits the identity authentication request to the identity authentication authority 210 . The identity authentication request may include the user's personal information. Personal information is information that can identify a user, and may include information such as a resident registration number, phone number, address, name, and the like. Additionally, according to an embodiment of the present invention, as information related to personal information and/or a vehicle to be fueled, driver's license number, license plate number, vehicle type, refueling type, year, vehicle color, etc. can provide information. Additionally, payment information (credit card number, related account information, etc.) related to the vehicle owner 230 may also be provided. This may be delivered by executing an application of the user terminal.

The server of the identity authentication authority 210 receiving the request from the terminal of the vehicle owner 230 checks whether the identity information is correct based on the identity information provided by the vehicle owner 230 . The identity authentication authority 210 can basically verify only information related to personal personal information and issue identity authentication information (VC), but for more enhanced vehicle-related security, driver's license-related information and vehicle information are combined with personal information After matching and confirming that the vehicle related to the identity is correct, identity authentication information (VC) can be issued. At this time, the identity verification information (VC) is digitally signed using the private key of the identity verification authority 210 and delivered.

Additionally, the gas station operator 220 may also perform identity authentication with the identity authentication authority 210 . To this end, the identity authentication request is transmitted to the identity authentication authority 210 . At this time, personal information of the gas station operator 220 and/or information related to the gas station (gas station location, gas space/area, number of vehicles that can be refueled, rates, policies, etc.) are transmitted together. The identity authentication authority 210 compares the personal information and/or gas station-related information of the gas station operator 220 with the information it possesses to determine if they match, and if they match, the identity authentication information (VC) of the gas station operator 220 is provided to the terminal of the gas station operator 220.

The vehicle owner 230 who has received identity verification (VC) creates a Verifiable Presentation (VP) (which can be called a 'submission document') for online gas reservation, and uses it to create a fueling platform ( 240). Then, log in to the platform 240 through the registered ID and password, and reserve a refueling space and time. At this time, the submission document (VP) may be composed of at least a part of the identification information (VC) and a digital signature. The digital signature uses the private key of the user's DID. A Submission (VP) (which may be called a 'Verification Expression') represents one or more Identity (VC) data and is packaged in such a way that the ownership of the data can be verified. Multiple identity verification (VC) may be included. The direct provision of identity verification (VC) can also be a kind of identity verification expression (VP). A data type derived from VC that can be verified cryptographically, but does not contain a VC, can also be a VP. The identity verification expression (VP) is preferably generated in a form that discloses at least some of the characteristics of the identity verification (VC) or satisfies a derived predicate requested by the verifier.

On the other hand, according to an embodiment of the present invention, the identity authentication expression (VP) as described above includes the identity authentication information (VC) issued by the identity authentication authority (210). As described above, the identity verification expression (VP) is signed and delivered using the private key of the user DID. Also, additionally, vehicle information of a vehicle to be reserved for fueling may be included in the identity verification expression (VP). The vehicle information includes at least some of information capable of specifying a fueled vehicle, such as vehicle number, vehicle type, fuel type, and the like. If the identity authentication authority 210 matches and confirms vehicle information with personal information and then issues identity verification (VC), when reserving gas with the vehicle used for identity verification (VC), the above vehicle information is used as an identity It may not be separately included in the authentication expression (VP).

The provider of the gas reservation platform 240 verifies whether the user is himself based on the identity information (which may also include vehicle information) included in the submission document VP provided from the user terminal 230 . At this time, the digital signature values included here are verified. Here, the digital signature value may include a digital signature of the vehicle owner 230 and a digital signature of the identity authentication authority 210 . To do this, the corresponding DID document is fetched from the blockchain 250. Since the DID document includes the public key of the vehicle owner 230 and the public key of the identification authority 210, signature values can be verified using these public keys. In addition, to check whether the VC included in the submitted document (VP) has already been revoked, it is verified whether there is a VC ID issued in the Revocation List. If the issued VC ID exists in the corresponding list, the submitted document (VP) is invalidated because it was submitted based on a revoked certificate. If all of the above verification procedures pass, the server associated with the parking space reservation platform 240 permits the user terminal 230 to access the parking space reservation service.

The gas station operator 220 provides the received identification information (VC) and gas station related information to the gas reservation platform 240 . The gas reservation platform 240 checks the identity of the gas station operator 220 and/or information related to the gas station based on the DID document on the blockchain 250 (also checks the Revocation Registry), and if there is no problem, the gas station operator 220 permits access to services related to the gas reservation platform.

3 is a detailed flowchart showing the process from block chain-based gas reservation to payment in more detail.

A gas station operator uploads gas station information on a gas reservation platform. The information belongs to non-blockchain information and can be provided in the form of information on a normal internet communication network. This information may include the location of the gas station, the type of oil handled, the current oil price by oil type, the conditions of use, the number of available fueling devices and the available time.

A fueling vehicle user accesses the parking reservation platform. Then, the gas station operator reads the gas station information uploaded on the platform.

The fueling vehicle user selects a gas station having an available fueling device at the location and time of the gas station he/she wants to fuel from among a plurality of uploaded gas station information, and requests a reservation for a fueling time and amount of fuel.

If the gas reservation is made without a hitch, the gas vehicle user pays the gas price calculated by considering the oil price set by the gas station operator and/or the platform fee. However, payment does not necessarily have to be made at the time of reservation. It may also be possible to pay directly at the gas station.

The gas reservation platform registers the above payment details as transaction information in the blockchain. At this time, the transaction information may include payment details (including fuel related information) and vehicle information. Information included in payment history information and vehicle information will be described in detail with reference to FIG. 4 .

When the above payment procedure is completed, the gas reservation platform notifies the gas station operator that the reservation for gas is confirmed.

After refueling reservation, when the scheduled refueling time arrives, the fueling vehicle user visits a gas station with the vehicle and refuels. After refueling, if refueling is scheduled, refueling information is provided to the refueling reservation platform. The fueling reservation platform registers fueling information in the block chain by matching it with payment history information and vehicle information. Then, the fueling completion message is provided to the terminal of the fueling vehicle user.

In another example, when refueling a vehicle, it is common to refuel only as reserved, but in some cases this is not the case. At this time, a separate payment may be made for the additional refueling amount. Alternatively, in the case of on-site payment, payment is also made at the gas station. When a payment is made at a gas station, payment information is generated, and the gas station terminal can immediately encrypt it and record it in the block chain. Alternatively, the payment information can be transmitted to the gas reservation platform, and the payment information can be encrypted in real time on the gas reservation platform and recorded in the block chain.

Additionally, when a fueling vehicle user cancels a fueling reservation and wants a refund, he/she may transmit a refund request to a refund system within the fueling reservation platform. The refund system checks the refund information requested by the gas vehicle user. At this time, it interlocks with the receipt issuance system in the gas reservation platform to check the details of the cancellation of the reservation by the consumer and performs the refund function according to the refund policy. That is, the payment is canceled and a cancellation receipt is issued accordingly. In addition, the details of the cancellation are delivered to the gas station operator so that they can take necessary action. Such refund-related details are also recorded in the blockchain system, and invalidation of previously issued gas-related use rights is performed. Then, the refund system delivers the issued cancellation receipt to the consumer.

4 is a conceptual diagram specifically illustrating gas payment information and vehicle information recorded on a blockchain.

Referring to FIG. 4, gas payment information registered in the blockchain through a server, a gas station, and/or a user terminal is related to oil price information, oil type information, gas flow amount information, gas station information, refinery company information, payment amount information, and coupon use. information may be included. This may include gas oil distribution history information obtained from a gas station terminal. The oil price information may be oil price information per liter at the time of refueling. The oil type information indicates information such as whether it is premium gasoline, general gasoline, light oil, or fuel supplement. The refueling amount information indicates how many liters of refueling the user has refueled, and the payment amount information indicates a payment amount when reserving refueling or paying for refueling. Gas payment information includes at least two or more of the above information.

In addition, the vehicle information matched and recorded in the block chain together with gas payment information includes vehicle identification information and related driving information. This may include vehicle model, license plate number, driving distance information, driving route information, vehicle owner personal information, displacement information, fuel economy information, and the like. It is preferable that at least two or more of the above information be included.

5 is a flowchart illustrating an algorithm for ensuring rationality of driving distance against refueling flow rate.

Referring to FIG. 5, the fueling platform server may obtain vehicle information and fueling information together from the blockchain system. The server calculates the driving distance against the amount of fuel. This is calculated based on the first refueling time and the second refueling time, and can be calculated with reference to the refueling amount and driving distance between the two time points (S510). Then, the calculated result value has the form of a fuel consumption value. Then, the server compares this with the previously stored conformance verification model (S520). The suitability verification model consists of comprehensive fuel efficiency data considering fuel type, vehicle type, basic fuel economy, and engine displacement. Here, the driving route may be further considered. For example, even when driving with the same vehicle model and the same oil type, fuel efficiency is not high when driving in the city due to the existence of traffic lights, but in the case of highway driving, there are not many cases of stopping and fuel efficiency is improved. In addition, fuel efficiency is also lowered in areas with heavy traffic congestion. The suitability verification model according to an embodiment of the present invention is a model that infers an appropriate fuel consumption value through machine learning using a plurality of factors as a learning data set. The training data set may be composed of (vehicle type, basic fuel efficiency, engine displacement, oil type, driving route and corresponding driving distance). The server sets a reference range by adding a predetermined offset value to the comprehensive data obtained as the result of the above model, and determines whether the previously calculated result value is included within the reference range. As a result of the judgment, if it is within the standard range, it is appropriate, which may mean that genuine and appropriate oil types are used. If it is out of the standard range, it can be determined that a poor oil type or an oil type containing a lot of bad fuel additives was used. The server outputs these results (S530). When outputting, this information can be provided to the user terminal. In another example, the determination result may be matched with vehicle information and fueling information and recorded on the blockchain.

In another example, the rationality assurance algorithm may also be executed in a user terminal through an app provided by the server.

6 is a block diagram showing the configuration of a device for executing a block chain-based refueling history recording method according to an embodiment of the present invention. As shown in FIG. 6, the user terminal, the gas platform server, and the gas station operator terminal (or payment terminal) may include a communication unit 710, a processor 720, a memory 630, and an input/output module 640. there is.

Referring to FIG. 6 , the communication unit 610 is a component that communicates with an external device through a wired and/or wireless network. The communication unit 610 may include an antenna and/or a communication processor.

The processor 620 is a component that executes the function of an individual device and executes a program or application related to the function.

In particular, the processor 620 of the user terminal basically includes key pair and DID generation and management functions. The processor 620 may include a DID document module that generates a user's DID, stores it in a key storage, and generates a DID document using a public key of a key pair.

In addition, the user terminal, the gas platform server, and the gas station operator terminal include a blockchain module. The above devices have authority to access blockchain nodes and may have functions of generating, reading, and writing information in the blockchain.

The processor 620 of the user terminal may include a module for generating a submission document (which may be referred to as a 'credential expression'). The credential expression generation module may generate a credential expression (VP: Verifiable Presentation) by adding the signature of the credential owner to the credential (VC) signed by the credential issuer (identity certification authority server).

In the case of a user terminal, the processor 620 includes an authentication module for authenticating that the processor 620 is a user of the user terminal device. The authentication module may be a module that performs authentication through fingerprint, iris authentication, and/or personal information (or password) authentication. Using the identity authentication module as described above, it is possible to authenticate that the person corresponding to the VC of the user having authority related to reserved gas service.

In the case of a main platform server, the processor 620 includes a verification module and can authenticate a user from a credential expression transmitted from a user terminal. In addition, gas station operators can also be authenticated.

The processor 620 of the gas platform server may include a module for providing gas reservation-related information, a receipt issuance module, and a refund module. In addition, it includes a function of calculating the driving distance against the fuel flow rate, a function of executing the suitability verification module, and a function of outputting the suitability result by comparing the two values.

Basically, the processors 620 of individual devices are connected to the memory 630 through a signal line, and execute programs stored in the memory 630.

The memory 630 is a storage device that stores instructions related to programs to be executed by the processor 620 and data processed by the processor 620 .

In particular, the memory 630 of the user terminal and/or the parking space lender terminal may include an electronic wallet 632, in which a key pair generated in relation to the DID and issued identification data and reservation fuel It may store gas tickets, etc. The key pair is stored in the key storage, and the identification information is stored in the VC storage.

The input/output module 640 includes information input means such as a keyboard and mouse, and information output means such as a monitor, TV, and touch screen.

7 is a conceptual diagram for explaining a function of linking with a server device that provides a used car trading platform service by utilizing a blockchain-based refueling history record according to an embodiment of the present invention.

Referring to FIG. 7 , a fueling platform server 710 may exchange information with a used car platform server 720 . At this time, information related to refueling may be directly exchanged. Alternatively, information can be shared using the blockchain 730. The used car platform server 720 may also have access rights to the blockchain system 730, and may use this to access various information recorded by the fueling platform server 710. That is, various vehicle information and/or fueling information described in FIG. 4 may be obtained through the blockchain 730. Then, the information acquired through the blockchain 730 can be used in the platform service for trading used cars. This will be described in more detail with reference to FIG. 8 .

8 is a view showing a refueling history information search screen provided by the used car platform server of FIG. 7 .

Referring to FIG. 8 , the used car platform server provides used car information to a plurality of users and provides a platform service for buying and selling used cars. At this time, as the used vehicle information, vehicle model, year, mileage, insurance premium, and the like may be provided.

According to an embodiment of the present invention, refueling history information may be additionally provided. In addition, this fueling history information is information that is recorded directly on the blockchain immediately after fueling transaction, payment terminal, fueling platform server, and/or vehicle user's terminal, and is highly secure. In other words, since it is recorded on the blockchain in conjunction with payment, it has a much higher reliability than information created by a specific user and uploaded to the server. In addition, at this time, oil distribution information may also be provided to the user by being included in the refueling history information. Moreover, since the information is managed in conjunction with the NFT, the NFT delivery process can also be checked on the blockchain.

In one example, a used car seller may upload his or her vehicle to a used car platform server. When the vehicle is uploaded, the used car platform server provides fueling information (including fuel distribution information) related to the vehicle on a blockchain based on the information of the vehicle. ) is acquired and uploaded to a website for selling used cars. Then, the buyer of a used car can see what kind of oil the car has been refueled with, what kind of oil it has been refueling with, how much mileage it has traveled, and the like, and can determine whether the genuine type of oil has been used. And, the overall condition of the vehicle can be estimated.

In another example, the used car platform server may obtain suitability verification result information according to the driving distance compared to the fueling amount determined by the fueling platform server directly and / or through the block chain, as in the method of the embodiment of FIG. 5 . In addition, the corresponding result can be displayed along with vehicle information and refueling information of the used car.

According to an embodiment of the present invention, the used car platform server can also secure the authority to read and write blockchain-related information through the DID-based VC. That is, both users for selling used cars and users for purchasing used cars must acquire VC from an identity authentication authority based on DID and register it in the service operated by the used car platform server. After the user is authenticated, the user can use a service for selling and/or purchasing a used car.

In addition, the used car platform server can match payment information related to used car transactions with vehicle information and record it on the blockchain. This can be matched with fueling information and vehicle information and recorded on the blockchain.

Although it has been described with reference to the drawings and examples, it does not mean that the scope of protection of the present invention is limited by the drawings or examples, and those skilled in the art can understand the spirit of the present invention described in the following claims. And it will be understood that the present invention can be variously modified and changed without departing from the scope.

Claims (11)

In the operating method of the used car platform server providing refueling history information,
Receiving vehicle information related to used car transaction from a user terminal;
Obtaining gas-related transaction information corresponding to the vehicle information from a blockchain, wherein the gas-related transaction information is recorded on the blockchain in association with payment for fueling; and
Providing fuel related transaction information corresponding to the vehicle information to the user terminal,
The method of operating a used car platform server that provides fueling history information, wherein the fueling-related transaction information is recorded on the blockchain by matching actual payment information with vehicle information that is a target of fueling. According to claim 1,
The step of receiving vehicle information related to used car transaction from a user terminal includes uploading vehicle information for selling used cars in a user terminal of a used car seller. According to claim 2,
The step of receiving vehicle information related to a used car transaction from a user terminal includes the step of inputting vehicle information for a used car purchase at a used car buyer's user terminal. According to claim 2 or 3,
Providing the vehicle information and the corresponding fueling related transaction information to the user terminal,
A method of operating a used car platform server that provides refueling history information, comprising providing vehicle information uploaded for sale of the used car and transaction information related to fueling. According to claim 1,
A method of operating a used car platform server that provides refueling history information by obtaining a determination result on the rationality of the mileage versus refueling amount based on the information related to the mileage of the vehicle and the transaction information related to refueling, and providing the result to the user terminal. According to claim 5,
The method of operation of a used car platform server providing refueling history information, wherein the determination result includes a result of whether a genuine oil type was used in correspondence with the fueled oil type. According to claim 1,
A method of operating a used car platform server that provides refueling history information, further comprising recording payment information related to a used car transaction on the blockchain in response to payment for a used car transaction using the vehicle information. According to claim 7,
The used car transaction-related payment information is matched with the vehicle information and the fueling-related transaction information and recorded on the blockchain. According to claim 1,
A method of operating a used car platform server that provides refueling history information, wherein the transaction information related to refueling is recorded in a blockchain in real time as soon as an actual payment occurs. According to claim 1,
The transaction information related to refueling includes distribution information of oil to be refueled,
The distribution information is provided by uploading at least one of refining process-related information and distribution process-related information on a blockchain by an oil refinery terminal or an oil distributor terminal. In the used car platform server device providing refueling history information,
Receiving vehicle information related to used car transactions from a user terminal, obtaining fuel related transaction information corresponding to the vehicle information from a blockchain, and providing fuel related transaction information corresponding to the vehicle information to the user terminal processor; and
Including a memory for storing instructions related to the operation of the processor,
The fueling-related transaction information is recorded on the blockchain in conjunction with payment for fueling,
The used car platform server device for providing fueling history information, wherein the fueling-related transaction information is recorded on the blockchain by matching actual payment information with vehicle information that is a target of fueling.

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