KR20210032168A - Apparatus and method for managing electronic receipt based on block chain - Google Patents

Abstract

The present invention relates to a block chain-based electronic receipt management device and to a method thereof. The device includes a memory and a processor electrically connected to the memory. When the payment performed between a payment terminal and a payment approval server is approved, the processor generates a new electronic receipt transaction block based on payment history information from the payment terminal, adds the electronic receipt new transaction block to an electronic receipt main block chain, and generates an electronic receipt change transaction block to add the electronic receipt change transaction block to an electronic receipt derived block chain derived from the electronic receipt new transaction block, whenever the payment is changed by the payment approval server after the new electronic receipt transaction block is added.

Description

Blockchain-based electronic receipt management device and method {APPARATUS AND METHOD FOR MANAGING ELECTRONIC RECEIPT BASED ON BLOCK CHAIN}

The present invention relates to an e-receipt management technology, and more particularly, a blockchain-based e-receipt management capable of storing and managing e-receipt and e-receipt change information generated according to payment and payment changes based on a blockchain. It relates to an apparatus and a method.

In the blockchain, small data called'blocks' as managed data are stored in a distributed data storage environment based on a chain-type connection created based on the P2P method, so that no one can arbitrarily modify them, and anyone can view the results of changes. It is a data deficit prevention technology based on distributed computing technology that can be done. This is fundamentally a form of distributed data storage technology. It is a change list that records continuously changing data in all participating nodes, and is designed to prevent arbitrary manipulation by the operator of the distributed node.

Blockchain technology is used for cryptocurrency systems such as bitcoin or for storing transaction records of financial institutions, and recently, it is also used for electronic document management and original verification. It is possible to induce participation in the blockchain network through technology that can manage electronic receipts using blockchain technology.

Korean Patent Publication No. 10-2018-0085570 (2018.07.27) relates to an apparatus and method for managing data using a block chain, and a block chain formed by a plurality of node terminals to synchronize and store data, and the The device that manages the storage, inquiry, and deletion of data in the blockchain is a main control unit that controls the management of data by transmitting a chain command for managing the block chain and a data command for managing the data to the node terminal, and the chain command. Blockchain storage in which empty space has been removed according to the block size limit of the file system, including the DB management unit that stores the created chain information in the chain table and stores the mapping information of data and transactions saved by the data command in the mapping table. Since data is stored in an area, it is possible to provide an apparatus and method for managing data using a block chain that enables efficient data storage in preparation for a storage area.

Korean Patent Laid-Open Publication No. 10-2019-0036948 (2019.04.05) relates to a data management system and method in a blockchain. In a node that manages data in a blockchain, the blockchain is the first It includes a block chain and a second block chain that stores hash information of data stored in the first block chain, and the first block chain and the second block chain manage data by interworking with each other to manage the data itself in the block chain. It can provide a data management system and method in a blockchain that can store and delete data.

Korean Patent Publication No. 10-2018-0085570 (July 27, 2018) Korean Patent Publication No. 10-2019-0036948 (2019.04.05)

An embodiment of the present invention is to provide a block chain-based electronic receipt management device and method capable of storing and managing electronic receipts and electronic receipt change information generated according to payment and payment changes based on a block chain.

An embodiment of the present invention is to provide a block chain-based electronic receipt management apparatus and method for reliably managing an electronic receipt generated based on payment details information whenever payment is approved.

An embodiment of the present invention is to provide a block chain-based electronic receipt management device and method that manages to easily check the electronic receipt change transaction according to the payment change.

Among embodiments, the block chain-based electronic receipt management apparatus includes a memory and a processor electrically connected to the memory, and the processor receives payment details information from the payment terminal when payment performed between the payment terminal and the payment approval server is approved. On the basis of creating a new electronic receipt transaction block, adding the new electronic receipt transaction block to the electronic receipt main blockchain, and each time the payment is changed by the payment approval server after the new electronic receipt transaction block is added An e-receipt change transaction block is created, and the e-receipt change transaction block is added to the e-receipt-derived block chain derived from the e-receipt new transaction block.

The processor receives the user's payment details information from the payment terminal, generates an electronic receipt based on the payment details information, generates a hash code for a specific area of the electronic receipt, and converts the electronic receipt into a hash code. It is possible to create a new transaction block for an electronic receipt by encryption.

The processor may generate a new electronic receipt transaction block including block identification information, block generation time, block-related information including a hash code, and electronic receipt information issued by a new transaction.

The processor may generate a new e-receipt transaction block including a hash code of at least a part of the e-receipt new transaction block added immediately before in the e-receipt main block chain.

When the payment is changed by the payment approval server after the new electronic receipt transaction block is added, the processor generates an electronic receipt change transaction block, searches for the new e-receipt transaction block in the e-receipt main block chain, and the The e-receipt change transaction block can be added to the e-receipt-derived block chain derived from the searched e-receipt new transaction block.

The processor may search for a new transaction block of the electronic receipt of payment matching the authorization number of the change transaction using payment authorization information uniquely issued by the payment authorization server as a search key.

The processor uses the e-receipt new transaction block from which the e-receipt-derived blockchain is derived as a root block, and the e-receipt change transaction block first generated in the e-receipt-derived blockchain contains at least some hash codes of the root block. I can.

The processor may generate an electronic receipt change transaction block including a hash code of at least a part of the electronic receipt change transaction block generated immediately before in the electronic receipt derivative block chain.

Among embodiments, the blockchain-based electronic receipt management method comprises the steps of generating a new electronic receipt transaction block based on payment details information from the payment terminal when payment performed between a payment terminal and a payment approval server is approved, the electronic receipt Adding a new transaction block to the electronic receipt main block chain, generating an electronic receipt change transaction block whenever the payment is changed by the payment approval server after the new electronic receipt transaction block is added, and the electronic receipt And adding the electronic receipt change transaction block to the electronic receipt-derived block chain derived from the new receipt transaction block.

The step of generating a new electronic receipt transaction block includes receiving payment details information from the payment terminal whenever the payment is approved by the payment approval server, and generating a new electronic receipt transaction block based on the payment details information. It may include steps.

The step of adding the e-receipt change transaction block includes searching for a new e-receipt transaction block in the e-receipt main blockchain, and adding the e-receipt change transaction block to an e-receipt-derived blockchain derived from the retrieved e-receipt new block. It may include the step of.

The disclosed technology can have the following effects. However, since it does not mean that a specific embodiment should include all of the following effects or only the following effects, it should not be understood that the scope of the rights of the disclosed technology is limited thereby.

Blockchain-based electronic receipt management apparatus and method according to an embodiment of the present invention can easily and conveniently manage electronic receipts and electronic receipts change according to payment and payment changes based on a block chain.

Blockchain-based electronic receipt management device and method according to an embodiment of the present invention stores an electronic receipt generated based on payment details information each time payment is approved by adding a block of the electronic receipt main block chain, thereby storing the electronic receipt. Receipts can be trusted and can be easily searched and viewed.

Blockchain-based electronic receipt management device and method according to an embodiment of the present invention is a block of an electronic receipt-derived blockchain that is connected to the main blockchain of the electronic receipt whenever payment is changed by a payment authorization server. By adding and storing, it is possible to easily check the e-receipt change transaction such as cancellation, return, and exchange of existing transactions.

1 is a diagram illustrating a block chain-based electronic receipt management system according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a physical configuration of the electronic receipt management apparatus in FIG. 1.
3 is a block diagram showing functional elements of the processor in FIG. 2.
4 is a flowchart illustrating a process of managing an electronic receipt performed by the processor in FIG. 2.
FIG. 5 is a diagram illustrating an embodiment of an electronic receipt management process performed through the electronic receipt management device of FIG. 1.
6 is an exemplary diagram of a block chain for managing electronic receipts according to an embodiment.

Since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all or only such effects, the scope of the present invention should not be understood as being limited thereto.

Meanwhile, the meaning of terms described in the present application should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when it is mentioned that a component is "directly connected" to another component, it should be understood that there is no other component in the middle. On the other hand, other expressions describing the relationship between components, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" refer to implemented features, numbers, steps, actions, components, parts, or It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

In each step, the identification code (e.g., a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step has a specific sequence clearly in the context. Unless otherwise stated, it may occur differently from the stated order. That is, each of the steps may occur in the same order as the specified order, may be performed substantially simultaneously, or may be performed in the reverse order.

The present invention can be implemented as computer-readable code on a computer-readable recording medium, and the computer-readable recording medium includes all types of recording devices storing data that can be read by a computer system. . Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tapes, floppy disks, and optical data storage devices. Further, the computer-readable recording medium is distributed over a computer system connected through a network, so that computer-readable codes can be stored and executed in a distributed manner.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be construed as having meanings in the context of related technologies, and cannot be construed as having an ideal or excessively formal meaning unless explicitly defined in the present application.

1 is a diagram illustrating a block chain-based electronic receipt management system according to an embodiment of the present invention.

Referring to FIG. 1, a block chain-based electronic receipt management system 100 may be implemented including a user terminal 110, a payment terminal 130, a payment approval server 150, and an electronic receipt management device 170. have.

The user terminal 110 may correspond to a computing device capable of receiving an electronic receipt related to payment of a user who has purchased an item or provided a service at at least one affiliated store, and can receive at least an electronic receipt related to change including payment cancellation. I can. Here, the user terminal 110 may be implemented as a smartphone, a laptop computer, or a computer, but is not limited thereto, and may be implemented as various devices such as a tablet PC. The user terminal 110 may be connected to the payment terminal 130, the payment approval server 150, and the electronic receipt management device 170 through a network.

The user terminal 110 may determine whether to consent to issuance of the electronic receipt, and when consent to issuance of the electronic receipt is granted, may receive the electronic receipt. After payment is approved, the user terminal 110 may receive an electronic receipt related to payment approval from the payment approval server 150 or the electronic receipt management device 170. In one embodiment, the user terminal 110 may receive an electronic receipt and output an electronic receipt whenever payment is approved according to a new transaction. The user terminal 110 may receive a notification of the electronic receipt change transaction whenever payment changes according to a change in an existing transaction.

The payment terminal 130 may correspond to a POS (Point of Sale) terminal provided for payment and payment cancellation at an affiliated store that sells goods or provides services, and is not limited thereto, but is not limited to cash payment, card payment, and convenience. It may be implemented as a computing device capable of performing payment using a payment method presented by a user, such as payment or mobile payment, and performing payment cancellation. In one embodiment, the payment terminal 130 requests payment approval according to the user's payment information to the payment approval server 150, and when information indicating that payment approval has been completed is received from the payment approval server 150, the payment terminal 130 transmits payment related information. It can be delivered to the electronic receipt management device 170. Here, when payment is approved, the payment terminal 130 may transmit payment detail information including at least the user's purchase amount to the electronic receipt management device 170.

In one embodiment, the payment terminal 130 may request the payment approval server 150 to change payment according to the user's transaction cancellation. The payment terminal 130 can query the transaction details of the electronic receipt change according to the payment change from the electronic receipt management device 170 before requesting the payment change to the payment approval server 150 and prevent the transaction cancellation from being doubled. I can. The electronic receipt change transaction details inquiry according to the payment change may be performed by the payment approval server 150.

The payment approval server 150 may include a general-purpose computer, a laptop, a data server, etc. that calculate various data to perform payment approval for the user's payment information. In one embodiment, the payment approval server 150 may include a card company server, a mobile payment server, or a simple payment server, but is not limited thereto, and a value added network (VAN) company server or a payment gateway (PG) for electronic payment. ), etc. may be included. The payment approval server 150 completes payment approval and transmits information indicating that payment approval is completed to the payment terminal 130 when approval for payment information according to the user's product payment or service provision is requested from the payment server 130. I can. Here, the payment information may include product information, service information, or amount, etc. input or selected in the payment terminal 130 in relation to a product purchased by the user or a service provided to the user.

In one embodiment, the payment approval server 150 may issue payment matching information to the payment terminal 130 after payment approval. Here, the payment matching information may include an authorization number or an authorization key. The payment approval server 150 includes the affiliate store name, affiliate store address, affiliate store contact information, payment time, payment amount, payment matching information (eg, approval number, approval key, etc.), and user identification information (eg, user ID, name, contact information, etc.). ) Can be stored in the payment approval history information. The payment approval server 150 may request an electronic receipt to the electronic receipt management device 170 and provide an electronic receipt to the user terminal 110.

In one embodiment, the payment approval server 150 may perform a payment change processing in response to a payment change request from the payment terminal 130 and transmit the payment change to the electronic receipt management device 170 whenever the payment is changed. have. The payment approval server 150 may provide payment change details information to the electronic receipt management device 170.

The electronic receipt management device 170 may provide an electronic receipt to the user terminal 110 and may be implemented as a server corresponding to a computer or program capable of managing electronic receipt change transactions. The electronic receipt management device 170 may be connected to the user terminal 110, the payment terminal 130, and the payment approval server 150 through a network, and may exchange information.

In one embodiment, the electronic receipt management device 170 may provide an electronic receipt and manage the electronic receipt based on a block chain. The electronic receipt management device 170 may generate an electronic receipt by receiving the user's payment details information from the payment terminal 130 and provide the generated electronic receipt to the payment approval server 150 or the user terminal 110. have. The electronic receipt management device 170 may generate a new electronic receipt transaction block whenever payment is approved, and may generate an electronic receipt change transaction block whenever payment is changed. The e-receipt management device 170 may manage by adding a new e-receipt transaction block to the e-receipt main block chain and adding the e-receipt change transaction block to the e-receipt-derived blockchain. The e-receipt management device 170 can manage the e-receipt main blockchain while updating the payment change with a derivative blockchain.

In one embodiment, the electronic receipt management apparatus 170 may be implemented including a processor, a memory, a user input/output unit, and a network input/output unit, which will be described in more detail with reference to FIG. 2.

FIG. 2 is a block diagram illustrating a physical configuration of the electronic receipt management apparatus in FIG. 1.

Referring to FIG. 2, the electronic receipt management apparatus 170 may include a processor 210, a memory 230, a user input/output unit 250, and a network interface 270.

The processor 210 can execute each procedure for managing the electronic receipt according to the payment approval and change performed between the payment terminal 130 and the payment approval server 150 based on the blockchain, and is read throughout the process. The created or created memory 230 may be managed, and a synchronization time between the volatile memory and the nonvolatile memory in the memory 230 may be scheduled. The processor 210 can control the overall operation of the electronic receipt management device 170, and is electrically connected to the memory 230, the user input/output unit 250, and the network input/output unit 270 to control data flow between them. can do. The processor 210 may be implemented as a CPU (Central Processing Unit) of the electronic receipt management device 170.

The memory 230 is implemented as a nonvolatile memory such as a solid state disk (SSD) or a hard disk drive (HDD), and may include an auxiliary storage device used to store all data necessary for the electronic receipt management device 170, and , A main memory device implemented as a volatile memory such as random access memory (RAM).

The user input/output unit 250 may include an environment for receiving a user input and an environment for outputting specific information to a user. For example, the user input/output unit 250 may include an input device including an adapter such as a touch pad, a touch screen, an on-screen keyboard, or a pointing device, and an output device including an adapter such as a monitor or a touch screen. In one embodiment, the user input/output unit 250 may correspond to a computing device connected through a remote connection, and in such a case, the electronic receipt management device 170 may be performed as a server.

The network input/output unit 270 includes an environment for connecting to an external device or system through a network, for example, a local area network (LAN), a metropolitan area network (MAN), a wide area network (WAN), and a VAN ( Value Added Network) may include an adapter for communication.

3 is a block diagram showing functional elements of the processor in FIG. 2.

Referring to FIG. 3, the processor 210 includes a new transaction block generation unit 310, a change transaction block generation unit 330, an electronic receipt block chain unit 350, an electronic receipt management unit 370, and a control unit 390. Can include.

When the payment performed between the payment terminal 130 and the payment approval server 150 is approved, the new transaction block generation unit 310 may generate a new electronic receipt transaction block based on the payment details information from the payment terminal 130. The payment detail information may include at least the user's purchase amount, and may further include at least one of a payment date and time, a product name, a quantity, a product type, an affiliate store name, an affiliate store address, an affiliate store contact information, and a payment method.

The new transaction block generation unit 310 may generate a new electronic receipt transaction block whenever payment is approved. The new transaction block generation unit 310 may receive the user's payment details information from the payment terminal 130 and generate an electronic receipt based on the payment details information. The new transaction block generation unit 310 may generate a new transaction block for the electronic receipt by generating a hash code for a specific area of the electronic receipt and encrypting the electronic receipt with a hash code. In one embodiment, the new transaction block generator 310 may generate a hash code for all or a selected part of the electronic receipt, and the hash code may be determined in various ways. The e-receipt new transaction block may include block-related information and e-receipt information issued by the new transaction. The block-related information may include block identification information, block generation time, and hash code, and other information may be additionally included. The block identification information may mean identification information that can be distinguished from other electronic receipt new transaction blocks. The block creation time may mean information on the generation time of the corresponding e-receipt new transaction block, and the order of connection of the e-receipt new transaction block may be determined using the block creation time. The block hash code corresponds to the summary of the e-receipt and enables efficient management and verification of e-receipts. The e-receipt information corresponds to information that is not based on other information, and may be information on an e-receipt issued by a new transaction. The electronic receipt information may include payment details information and payment matching information. The payment details information may include detailed information of the electronic receipt item, for example, merchant information such as merchant name, address, and contact information, product name, quantity, amount, transaction date, and payment method. The payment matching information may correspond to a payment identification code, for example, an approval number that is uniquely issued by the payment approval server 150 after payment is completed.

The change transaction block generation unit 330 may generate an electronic receipt change transaction block whenever payment is changed by the payment approval server 150. In one embodiment, the change transaction block generation unit 330 may generate an electronic receipt change transaction block based on payment change detail information from the payment approval server 150. The e-receipt change transaction block may include block-related information and e-receipt change information based on the e-receipt information. Block-related information may include block identification information, block generation time, and hash code. The block identification information may mean identification information that can be distinguished from other electronic receipt change transaction blocks. The block generation time may mean information on the generation time of the corresponding electronic receipt change transaction block, and the order of connection of the electronic receipt change transaction block may be determined using the block generation time. The block hash code manages the change of the electronic receipt according to the change of payment and enables verification of the change of payment. The e-receipt change information may be information on changing e-receipt information issued by an existing transaction. For example, the electronic receipt change information may be information on cancellation, exchange, return, abnormality and error of an existing transaction.

The e-receipt block chain unit 350 may include an e-receipt main block chain in which the e-receipt new transaction block is connected in a time series, and an e-receipt-derived block chain derived from the e-receipt new transaction block.

The e-receipt block chain unit 350 may form a main e-receipt block chain by connecting two new e-receipt transaction blocks. In the e-receipt main block chain, a plurality of e-receipt new transaction blocks can be sequentially connected. Here, the e-receipt main block chain may mean a set of blocks in which a plurality of e-receipt new transaction blocks are connected in one dimension. The e-receipt block chain unit 350 connects an e-receipt new transaction block in the e-receipt main block chain with the e-receipt new transaction block created immediately before in the e-receipt main blockchain. In this case, any one electronic receipt new transaction block may be connected by including the hash value of the newly created electronic receipt new transaction block. The e-receipt new transaction block may be connected by including the hash code of the e-receipt new transaction block generated immediately before in the block-related information.

The e-receipt block chain unit 350 may form an e-receipt-derived blockchain derived from the e-receipt main blockchain. The e-receipt-derived blockchain includes a root block and at least one connection block connected thereto. The root block is a block included in the main e-receipt blockchain, and is the block from which the e-receipt-derived blockchain begins. The at least one connection block is an electronic receipt change transaction block, and the electronic receipt change transaction block may be connected in proportion to the number of payment changes for one electronic receipt. Here, the e-receipt-derived block chain may mean a set of connected blocks by deriving the e-receipt change transaction blocks into an e-receipt new transaction block that is connected to the e-receipt main block chain. The e-receipt block chain unit 350 is connected to the e-receipt change transaction block created immediately before any one e-receipt change transaction block in the e-receipt-derived blockchain. In this case, any one electronic receipt change transaction block may be connected by including a hash value of the electronic receipt change transaction block generated immediately before for the same transaction. The e-receipt change transaction block may be connected by including a hash code of the e-receipt change transaction block generated immediately before the block-related information.

The e-receipt management unit 370 adds a new e-receipt transaction block generated every time payment is approved to the e-receipt main block chain, and adds an e-receipt change transaction block generated every time payment is changed in the e-receipt new transaction block. Derivative e-receipts You can manage e-receipts in addition to the derivative blockchain. The e-receipt management unit 370 may search for a new e-receipt transaction block in the e-receipt main block chain when payment is changed by the payment approval server 150 after the e-receipt new transaction block is added. The e-receipt management unit 370 may add the e-receipt change transaction block to the e-receipt-derived block chain derived from the searched e-receipt new transaction block. The electronic receipt management unit 370 may use the payment approval information uniquely issued by the payment approval server 150 as a search key to search for a new electronic receipt transaction block of payment matching the approval number of the change transaction. The e-receipt management unit 370 may add the e-receipt change transaction block to the connected e-receipt-derived block chain using the retrieved e-receipt new transaction block as a root block.

The control unit 390 controls the overall operation of the processor 210, and between the new transaction block generation unit 310, the change transaction block generation unit 330, the electronic receipt block chain unit 350, and the electronic receipt management unit 370. You can manage control flow or data flow.

FIG. 4 is a flowchart illustrating a block chain-based electronic receipt management process performed by the processor in FIG. 2.

Referring to FIG. 4, the processor 210 may generate a new electronic receipt transaction block based on payment details information from the payment terminal 130 when payment performed between the payment terminal 130 and the payment approval server 150 is approved. Yes (step S410).

The processor 210 may add a new electronic receipt transaction block to the electronic receipt main block chain (step S430).

The processor 210 may generate an electronic receipt change transaction block whenever payment is changed by the payment approval server 150 after the new electronic receipt transaction block is added (step S450).

The processor 210 may search for a new e-receipt transaction block in the e-receipt main blockchain and add the e-receipt change transaction block to the e-receipt-derived blockchain derived from the retrieved e-receipt new transaction block (step S470).

FIG. 5 is a diagram illustrating an embodiment of a block chain-based electronic receipt management process performed through the electronic receipt management device in FIG. 1.

Referring to FIG. 5, when a user purchases a product or service, a user may request a payment by presenting a payment method for payment of a purchase amount to a seller, and may convey an intention to consent to issuance of an electronic receipt.

The payment terminal 130 may request payment approval from the payment approval server 150 for the user's purchase amount and payment method-related information, and the payment approval server 150 may perform payment approval processing. The payment approval server 150 may transmit an approval number for identifying payment approval details to the payment terminal 130 after approving the payment of the purchase amount using the user's payment method.

After payment is completed, the payment terminal 130 may determine whether or not the user agrees to issue an electronic receipt, and if there is no consent, output a paper receipt and provide it to the user. The payment terminal 130 may process a request for issuing an electronic receipt when the user agrees to issue an electronic receipt. That is, the payment terminal 130 may transmit payment detail information including at least the user's purchase amount to the electronic receipt management device 170 to process an electronic receipt issuance request.

When payment details information is received from the payment terminal 130, the electronic receipt management apparatus 170 may generate an electronic receipt based on the payment details information. Here, the electronic receipt may be generated in the same form as the paper receipt including the user's purchase details. The electronic receipt management device 170 may provide the generated electronic receipt to the user terminal 110 through the payment approval server 150 or directly to the user terminal 110.

The electronic receipt management device 170 may generate a new electronic receipt transaction block for a new transaction approved for payment. The electronic receipt management device 170 may add a new electronic receipt transaction block to the main electronic receipt block chain, and manage newly issued electronic receipt blocks using the block chain.

On the other hand, the user may request the seller to change the payment when a reason for changing payment such as cancellation, return, or exchange occurs for the purchased product or service. The payment terminal 130 may transmit the user's payment change request to the payment approval server 150 to perform payment change processing. The payment approval server 150 may transmit the payment change details information to the electronic receipt management device 170 after the payment change is completed.

When the payment change history information is received, the electronic receipt management device 170 creates an electronic receipt change transaction block based on the payment change history information, and adds the electronic receipt change transaction block to the electronic receipt derivative block chain derived from the new electronic receipt transaction block. can do. The e-receipt management device 170 is derived from at least one e-receipt including one e-receipt main block chain in which newly generated e-receipt blocks are connected in the order of creation and an e-receipt change transaction block generated by a change of an existing transaction Blockchain can be formed, and it can be used to manage the provision and cancellation of e-receipts.

6 is an exemplary view showing the form of an electronic receipt block chain formed in the electronic receipt management apparatus according to an embodiment.

6, the block chain-based electronic receipt management device 170 according to an embodiment generates a new electronic receipt transaction block (M-Block #n, n is a natural number including 0) whenever payment is approved. The electronic receipt new transaction block can include block information and e-receipt information. The e-receipt new transaction blocks may be connected in the order of creation time to form the e-receipt main blockchain 500. The e-receipt new transaction block may include a hash code of at least a portion of a block immediately preceding the e-receipt main block chain 500. Here, the e-receipt new transaction block (M-Block #0) refers to the block created for the first time.

Blockchain-based electronic receipt management device 170 according to an embodiment may generate an electronic receipt change transaction block (S-Block #m, m is a natural number) whenever payment is changed, and the electronic receipt change transaction block May include block information and e-receipt change information. The e-receipt change transaction block may be added to the e-receipt-derived blockchain 600 derived from the e-receipt new transaction block. Here, the e-receipt new transaction block to which the e-receipt-derived blockchain 600 is connected means the root block of the e-receipt-derived blockchain 600.

Blockchain-based electronic receipt management device and method according to an embodiment can manage payment changes for electronic receipts using a blockchain, and store and manage electronic receipt change information generated according to payment changes through the blockchain. can do.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can do it.

100: Blockchain-based electronic receipt management system
110: user terminal 130: payment terminal
150: payment approval server 170: electronic receipt management device
210: processor 230: memory
250: user input/output unit 270: network input/output unit
310: new transaction block generation unit 330: change transaction block generation unit
350: Electronic Receipt Blockchain Department 370: Electronic Receipt Management Department
390: control unit
500: e-receipt main blockchain
600: e-receipt-derived blockchain

Claims (11)

A memory and a processor electrically connected to the memory,
The processor is
When the payment performed between the payment terminal and the payment approval server is approved, a new electronic receipt transaction block is created based on the payment details information from the payment terminal,
Add the new electronic receipt transaction block to the e-receipt main blockchain,
After the e-receipt new transaction block is added, the e-receipt change transaction block is created whenever the payment is changed by the payment approval server, and the e-receipt is changed to the e-receipt-derived blockchain derived from the e-receipt new transaction block. To add a transaction block
Blockchain-based electronic receipt management device.
The method of claim 1, wherein the processor
Receiving the user's payment details information from the payment terminal,
Create an electronic receipt based on the payment details information,
Generate a hash code for a specific area of the e-receipt,
A block chain-based electronic receipt management device, characterized in that the electronic receipt is encrypted with a hash code to generate a new electronic receipt transaction block.
The method of claim 2, wherein the processor
Block chain-based electronic receipt management device, characterized in that it generates a new electronic receipt transaction block including block identification information, block creation time, block-related information including a hash code, and electronic receipt information issued by a new transaction.
The method of claim 3, wherein the processor
A block chain-based electronic receipt management device, characterized in that for generating a new electronic receipt transaction block including a hash code of at least a part of the electronic receipt new transaction block added immediately before in the e-receipt main block chain.
The method of claim 1, wherein the processor
When the payment is changed by the payment approval server after the new e-receipt block is added, an e-receipt change transaction block is created, and the e-receipt new transaction block is searched in the e-receipt main block chain, and the retrieved e-receipt A block chain-based electronic receipt management device, characterized in that the electronic receipt change transaction block is added to an electronic receipt derived block chain derived from a new transaction block.
The method of claim 5, wherein the processor
Blockchain-based electronic receipt management device, characterized in that the electronic receipt new transaction block of payment matching the approval number of the change transaction is searched by using payment approval information uniquely issued by the payment approval server as a search key.
The method of claim 5, wherein the processor
The e-receipt new transaction block from which the e-receipt-derived block chain is derived is used as a root block, and the e-receipt change transaction block first generated in the e-receipt-derived block chain includes a hash code of at least a portion of the root block. Blockchain-based electronic receipt management device.
The method of claim 5, wherein the processor
A block chain-based electronic receipt management device, characterized in that for generating an electronic receipt change transaction block including a hash value of at least a part of the electronic receipt change transaction block generated immediately before in the electronic receipt derivative block chain.
Generating a new electronic receipt transaction block based on payment details information from the payment terminal when payment performed between the payment terminal and the payment approval server is approved;
Adding the e-receipt new transaction block to the e-receipt main block chain;
Generating an electronic receipt change transaction block whenever the payment is changed by the payment approval server after the new electronic receipt transaction block is added; And
Blockchain-based electronic receipt management method comprising the step of adding the e-receipt change transaction block to an e-receipt-derived blockchain derived from the e-receipt new transaction block.
The method of claim 9, wherein the step of creating a new transaction block for the electronic receipt
Receiving payment detail information from the payment terminal whenever the payment is approved by the payment approval server; And
And generating a new electronic receipt transaction block based on the payment details information.
The method of claim 9, wherein the step of adding the electronic receipt change transaction block
Searching for a new electronic receipt transaction block in the e-receipt main block chain; And
And adding the e-receipt change transaction block to an e-receipt-derived blockchain derived from the searched e-receipt new block.

Images