KR102349401B1 - System for trading user-defined currency based on blockchain and operating method thereof - Google Patents

Abstract

A blockchain-based user-defined currency trading system that can safely trade user-defined currencies is provided. A blockchain-based user-defined currency transaction system according to an embodiment of the present invention configures a peer-to-peer (P2P)-based blockchain network, and distributes and manages blockchain data in which a plurality of blocks are connected in a chain form A plurality of blockchain nodes that record transaction data for a user-defined currency defined based on virtual currency using the block-chain data and the block-chain network work together to provide a transaction service for the user-defined currency It may include a service providing server that

Description

A blockchain-based user-defined currency trading system and its operating method {System for trading user-defined currency based on blockchain and operating method thereof}

The present invention relates to a blockchain-based user-defined currency transaction system and a method of operating the system. More specifically, it relates to a transaction system that provides a secure transaction service for a user-defined currency defined based on virtual currency on a block chain, and a method of operating the system.

Blockchain is a data management technology in which continuously increasing data is recorded in a specific unit of block, and each node constituting a peer-to-peer (P2P) network manages the block as a chain-type data structure. Or, it means the data itself composed of the chain-type data structure. At this time, blockchain data composed of a chain-type data structure is operated in the form of a distributed ledger at each node without a central system.

Each block chain node constituting the block chain network manages blocks in the data structure shown in FIG. 1 . Here, in each block, a hash value for the previous block is recorded, and the previous block can be referenced through the hash value. Accordingly, as blocks are accumulated, forgery and falsification of the transaction data recorded in the block becomes difficult, and the reliability of the transaction data recorded in each block is improved.

Currently, various systems have been proposed that provide transaction services for virtual currency issued and circulated through a block chain by using the advantages of the above-described block chain technology. A representative virtual currency trading system is the Bitcoin (bitcoin) system.

The Bitcoin system performs UTXO (unspent transaction output) verification for each transaction to prevent double spending problems and provide secure transaction services. For example, when the transaction data 10 as shown in FIG. 2 is received, whether the owner information of the UTXO recorded in the input unit 11 matches the payer, and the sum of the UTXO recorded in the input unit 11 is output Verification as to whether or not it is greater than the sum of UTXOs recorded in parts 13 and 15 is performed at each blockchain node. Through this, users using the Bitcoin system are guaranteed the stability and reliability of transactions.

On the other hand, the open asset protocol is one of the representative derivative technologies to increase the usefulness of virtual currency traded through the block chain. As shown in FIG. 3 , the open asset protocol is located in the overlay layer 23 of the blockchain protocol layer 21, and various types of user definitions are based on virtual currency (or native assets) issued through the blockchain. It is an asset issuance technology that defines and issues currency (or custom assets).

When the open asset protocol is applied to the Bitcoin system, as shown in FIG. 4 , user-defined currency (e.g. points, stocks, etc.) can be traded using the Bitcoin transaction 30 as it is.

However, since the user-defined currency defined and issued through the open asset protocol is made in the form of an overlay on the virtual currency, even if UTXO verification is performed, the safety of transactions with the user-defined currency is not guaranteed. Therefore, in order to provide safe transaction services, a separate mechanism for performing transaction validation such as double payment of user-defined currency is required in the user-defined currency transaction system, separate from the UTXO verification performed by the blockchain itself. For example, a separate transaction verification application that validates the transaction for a user-defined currency needs to be provided.

However, adding a separate transaction verification application to the custom currency transaction system is an approach that does not utilize the core elements of blockchain technology, which is a technology to ensure transaction safety. In addition, since a new transaction verification application is required every time a user-defined currency is newly defined, it can be a significant constraint in expanding the blockchain-based user-defined currency transaction service.

Korea Patent Publication No. 2016-0150278 (published on December 29, 2016)

The technical problem to be solved by the present invention is to provide a blockchain-based user-defined currency transaction system that provides a secure transaction service for user-defined currency defined based on virtual currency on the block chain.

Another technical problem to be solved by the present invention is to provide a blockchain-based user-defined currency transaction system that provides a secure transaction service for the user-defined currency without a separate application that verifies the transaction for the user-defined currency. .

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above technical problem, a block chain-based user-defined currency transaction system according to an embodiment of the present invention constitutes a peer-to-peer (P2P) based block chain network, and a plurality of blocks are in the form of a chain Distributed management of blockchain data connected by It may include a service providing server that provides a transaction service for the definition currency. In this case, the transaction data may include information on the first amount of money of the user-defined currency to be traded and information about the second amount of money of the virtual currency to be traded.

In an embodiment, the user-defined currency may be defined through an open asset protocol.

In an embodiment, when the transaction for the user-defined currency is processed, the transaction for the virtual currency may be processed together, and the value of the first amount of money and the value of the second amount of money may be the same.

In an embodiment, the verification of the transaction data may be performed through a first verification step of verifying whether the value of the first amount of money matches the value of the second amount of money.

In one embodiment, the plurality of block chain nodes include a block generating node that generates (mining) a new block added to the block chain data, wherein in response to the block generating node generating the new block, A set amount of new virtual currency is issued, and in response to the new virtual currency being issued, a new user-defined currency having the same value as the new virtual currency may be issued.

In an embodiment, the user-defined currency includes a first user-defined currency and a second user-defined currency, and the service providing server provides a transaction service for the first user-defined currency and the second user-defined currency. provided that, when the second user-defined currency of the 4-1 monetary amount is issued, the virtual currency of the 4-2 monetary amount is used, the value of the 3-1 monetary amount and the value of the 3-2 monetary amount may be the same, and the value of the 4-1 money amount may be the same as the value of the 4-2 money amount.

In one embodiment, the service providing server, in response to the purchase request of the user-defined currency received from the user's terminal, comprising a service request processing unit for processing the purchase request through the block chain network, the purchase request In the processing for, the first blockchain node among the plurality of blockchain nodes responds to the purchase processing request received from the service request processing unit, and user-defined the amount of user-defined currency that corresponds to the purchase request among the previously issued user-defined currencies. A first processing step of transferring money to the user's electronic wallet and a second processing step of recording the transaction data of the first processing step in the block chain data may be performed.

In order to solve the above technical problem, a block chain-based point type currency transaction system according to another embodiment of the present invention constitutes a P2P (peer-to-peer) based block chain network, and a plurality of blocks are in the form of a chain Distributed management of blockchain data connected by A service providing server that provides a transaction service for the point type currency by interworking with a plurality of block chain nodes and the block chain network, wherein the issued point type currency is a designated electronic wallet until the user's charging request is processed , and data according to the issuance of the point type currency may be recorded in the block chain data.

According to the present invention described above, when the user-defined currency of the first amount of money is issued, virtual currency having the same value as the first amount of money is used. In addition, whenever the user-defined currency is traded, the virtual currency is also operated to be traded together. Accordingly, when the blockchain's own function that performs validation (e.g. UTXO validation) for virtual currency transactions is performed, the validity of transactions for user-defined currency is also automatically verified.

In addition, as the transaction for the user-defined currency is automatically verified, there is an effect that a safe transaction service is provided to the user without an additional verification application. In addition, there is an effect of reducing the human cost and time cost required for the development of the verification application.

In addition, since an additional verification application is not required, the scalability and usability of the blockchain-based transaction service can be greatly improved.

In addition, user-defined currency can be linked with real money, and transaction services such as purchase, accumulation, and withdrawal of user-defined currency can be provided based on block chain. Accordingly, the usefulness of the user-defined currency is improved, the stability of the transaction service is guaranteed as transactions are performed through the block chain, and user convenience can also be improved.

Effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a diagram for explaining the structure of block chain data that can be referenced in some embodiments of the present invention.
2 is a diagram illustrating a structure of transaction data for virtual currency that can be referenced in some embodiments of the present invention.
3 and 4 are diagrams for explaining an open asset protocol that can be referenced in some embodiments of the present invention.
5 is a block diagram of a user-defined currency transaction system based on a block chain according to an embodiment of the present invention.
6A and 6B are diagrams illustrating the structure of transaction data for user-defined currency that may be referenced in some embodiments of the present invention.
7 is a flowchart of a transaction data verification method according to an embodiment of the present invention.
8 to 10 are diagrams for explaining an example of using a plurality of user-defined currencies according to an embodiment of the present invention.
11 is a block diagram illustrating a service providing server, which is one component of a blockchain-based user-defined currency transaction system.
12 is a block diagram illustrating a user terminal, which is a component of a blockchain-based user-defined currency transaction system.
13 and 14 are diagrams for explaining a process in which point charging is processed among types of transactions performed in a user-defined currency transaction system according to an embodiment of the present invention.
15 and 16 are diagrams for explaining a process in which point accumulation is processed among types of transactions performed in a user-defined currency transaction system according to an embodiment of the present invention.
17 and 18 are diagrams for explaining a process in which point withdrawal is processed among types of transactions performed in a user-defined currency transaction system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular. The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase.

As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Prior to the description of the present specification, some terms used in the present specification will be clarified.

In this specification, block chain data is data maintained by each block chain node constituting a block chain network, and means data in which at least one block is configured as a chain-type data structure. When the data recorded in each block is transaction data, the block chain data can be used as a distributed ledger. However, the type of data recorded in each block may vary. Refer to FIG. 1 for the structure of the block chain data.

In this specification, a blockchain network refers to a P2P-structured network composed of a plurality of blockchain nodes operating according to a blockchain algorithm.

In this specification, a block chain node means a subject that configures a block chain network and maintains and manages block chain data based on a block chain algorithm. The blockchain node may be implemented as a single computing device, but may also be implemented as a virtual machine or the like. When implemented as a virtual machine, a plurality of blockchain nodes may exist on a single computing device.

As used herein, a block generating node means a node that generates a new block through mining among the block chain nodes constituting the block chain network.

In the present specification, virtual currency refers to electronic money that is transacted online without a real thing in a broad sense. Virtual currency in a narrow sense refers to electronic money issued through mining on a block chain, such as, for example, Bitcoin, and may be used interchangeably with terms such as native asset in the technical field.

In this specification, the user-defined currency means money defined by a user based on the virtual currency. For example, the user-defined currency may be a currency defined by an operator of a transaction service using an open asset protocol. For reference, in the virtual currency and/or the user-defined currency, the term “money” may be used in a comprehensive sense including not only a currency as an exchange means but also an asset to be traded. For example, the user-defined currency may include point-type money such as points and mileage, and financial assets such as stocks and bonds in addition to real money. The user-defined currency may be used interchangeably with terms such as custom assets in the technical field.

In this specification, the open asset protocol refers to an asset issuance technology that issues user-defined currency based on virtual currency on the blockchain. The open asset protocol may be used interchangeably with terms such as a colored coin in the art.

In this specification, permission may be understood as a comprehensive concept including authentication (authentication) and authorization (authorization).

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, for convenience of understanding, in some embodiments of the present invention to be described later, it is assumed that the virtual currency is Bitcoin and the user-defined currency is a point (e.g. membership point). However, the scope of the present invention is not limited to a specific type of virtual currency or user-defined currency.

5 is a block diagram of a user-defined currency transaction system based on a block chain according to an embodiment of the present invention.

Referring to FIG. 5 , the blockchain-based user-defined currency transaction system may be configured to include a service providing server 100 , a blockchain network 200 , and user terminals 300 and 400 . However, this is only a preferred embodiment for achieving the object of the present invention, and it goes without saying that some components may be added or deleted as needed. In addition, it should be noted that each component of the user-defined currency transaction system shown in FIG. 5 represents functionally distinct functional elements, and at least one component may be implemented in a form that is integrated with each other in an actual physical environment. do. For example, the service providing server 100 and the user terminals 300 and 400 may also be implemented as one block chain node constituting the block chain network 200 . Hereinafter, each component of the user-defined currency trading system will be described.

In the user-defined currency transaction system, the service providing server 100 is a computing device that provides a transaction service for user-defined currency through the block chain network 200 . Here, the computing device may be a notebook computer, a desktop computer, a laptop computer, etc., but is not limited thereto, and may include all types of devices equipped with calculation means and communication means. However, in order to process a number of transaction requests, the service providing server 100 may be preferably implemented as a high-performance server computing device.

According to an embodiment of the present invention, the service providing server 100 provides a transaction service including various transaction types such as point purchase, accumulation, and point withdrawal to the user. In this embodiment, the user may purchase points using real money, and withdraw the purchased points back to the original real money. According to the present embodiment, by interlocking the user-defined currency with real money, the usefulness and value of the user-defined currency can be further improved. In addition, the user may purchase a product by using the points as currency, and thus the user's convenience may also be improved. A detailed description of the present embodiment will be described later with reference to FIGS. 13 to 18 .

In the user-defined currency transaction system, the blockchain network 200 is a P2P-structured network composed of a plurality of blockchain nodes. The block chain nodes constituting the block chain network 200 perform operations such as block creation, propagation, verification, and recording based on the block chain algorithm. In addition, each blockchain node maintains the same blockchain data.

Each blockchain node verifies the validity of the transaction (e.g. UTXO verification) for the virtual currency recorded together with the transaction data according to the blockchain algorithm whenever transaction data in which the transaction details of user-defined currency are recorded are received.

According to an embodiment of the present invention, when each of the blockchain nodes verifies the validity of the transaction for the virtual currency, the validity of the transaction for the user-defined currency can also be verified. For example, if double payment of virtual currency is verified through UTXO verification, double payment of user-defined currency may also be verified. To this end, the blockchain network 200 according to the embodiment of the present invention may operate according to the following rules.

The first rule is that when the user-defined currency of the first amount of money is issued, the virtual currency of the second amount of money is used, and the value of the first amount of money and the value of the second amount of money are the same. According to an embodiment, marking may be performed on a predetermined first virtual currency used when the first user-defined currency is issued. The marking means that it is used for issuance of the first user-defined currency, and when the first user-defined currency is later traded, the marked first virtual currency may be traded together. However, according to an embodiment, it may be implemented so that a predetermined second virtual currency, not the first virtual currency used for issuance, is traded together when the first user-defined currency is traded. Hereinafter, for convenience of understanding, it is assumed that the values of the user-defined currency and the virtual currency are 1:1 and will be described. That is, it is assumed that the amount of user-defined currency issued and the amount of virtual currency used for issuance are the same. In addition, in some embodiments of the present invention, the fact that the first amount of money of the user-defined money and the second amount of virtual currency are the same may include the meaning that the monetary value of the first amount of money and the monetary value of the second amount of money are the same. can

According to the first rule, for example, a predetermined amount of satoshi (virtual currency) may be issued in advance, and 100 points (user-defined currency) may be issued using 100 satoshis from among the previously issued satoshis. Or, conversely, if a specific block generating node succeeds in mining and 100 Satoshi is issued, 100 points may also be issued. Here, the issued user-defined currency may be stored in the system electronic wallet existing on the transaction system. The system electronic wallet may be understood as a place where the issued user-defined currency is stored until purchased by the user, and may be implemented in any manner.

The second rule is that when a transaction for user-defined currency is processed, a transaction for virtual currency is also processed together. For example, when a transaction in which the first user pays 100 points to the second user is processed, a transaction in which the first user pays 100 satoshi to the second user is also processed.

Through the first rule and the second rule, the blockchain network 200 determines the total amount of user-defined currency issued (or total issuance value) and the total amount of virtual currency used for issuance of user-defined currency (or total monetary value). ) is kept the same, and transactions for user-defined currency and virtual currency of the same amount (or monetary value) are always processed together. Accordingly, when the validity of the transaction for the virtual currency is verified, the validity of the transaction for the user-defined currency may also be automatically verified. A more detailed description of how verification of a transaction for user-defined currency is performed on the blockchain network 200 will be described later with reference to FIGS. 6A to 7 .

According to an embodiment of the present invention, the blockchain network 200 may be a permission-based blockchain network. That is, the block chain network 200 may be a network configured by participation of only authorized block chain nodes. Here, the permission-based blockchain network may be used interchangeably with terms such as a private blockchain network in the technical field, but may refer to the same meaning. According to this embodiment, since participation of unspecified nodes is excluded, excessive proof of work required for block generation is not required, and a more secure transaction service can be provided.

In the above-described embodiment, permission verification may be performed for each of the user area, the block chain node area, and the block generation node area of the block chain application service in order to configure the block chain network based on the permission. Hereinafter, the permission verification method performed in each area will be briefly described.

In the case of the user area of the blockchain application service, authentication and/or authority management for service users may be performed. For example, access control may be performed through an access control list (ACL) at the API level, or permission verification for a corresponding user may be performed using a user's electronic signature used for a transaction request.

In the case of the blockchain node area, verification can be performed using the permission information (e.g. permission information recorded in the configuration file) pre-stored in each node at the time each blockchain node starts up to participate in the blockchain network. Here, the permission information may be information controlled by a predetermined management device or periodically updated according to an embodiment. Alternatively, mutual permission verification between nodes may be performed when each blockchain node sets up peer-to-peer communication with other blockchain nodes. In this case, mutual permission verification may be performed using, for example, permission information stored on the blockchain data (e.g., a white list including permissioned blockchain node information, etc.). When permission information is stored on the block chain data, there may be an effect of preventing forgery and falsification of permission information. The permission information may be, for example, information set by a predetermined management device.

In the case of the block generation node region, permission verification for a new block may be performed. For example, each blockchain node can only add new blocks created by block generating nodes whose permission has been verified to the blockchain data. In this case, the verification of the permission may be performed in the same manner as the verification method of the block chain node area. Alternatively, permission verification for the new block may be performed by forcing the block generating node to record its electronic signature in the new block when generating a new block, and other blockchain nodes verify the electronic signature.

For reference, in the above-described embodiment, since the goodness of the block generating node greatly affects the reliability of the block chain network, the second permission verification criterion of the block generating node rather than the first permission which is the permission verification criterion of the block chain node The permission may be set to a higher permission.

In the user-defined currency transaction system, the user terminals 300 and 400 are terminals used by the user to use the transaction service provided by the service providing server 100 . A user who becomes either one of the transaction parties may transact the user-defined currency stored in his/her electronic wallet through the user terminals 300 and 400 . For example, the user charges points through payment of real money through the user terminals 300 and 400 , purchases a predetermined product using points stored in the electronic wallet, or redeems the stored points with real money You can use transaction services such as withdrawing to A detailed description thereof will be described later with reference to FIGS. 13 to 18 .

For reference, in the present specification, when a user using a user-defined currency transaction service is an operator of a store, and the user's terminal is used for a store, the user's terminal may be referred to as a store terminal. Hereinafter, when one of the transaction parties is an operator of a store, it is assumed that the user terminal 400 is used as a terminal for a store.

In the user-defined currency transaction system, each component constituting the block chain-based user-defined currency transaction system can communicate through a network. Here, the network includes all types of wired/wireless networks such as a local area network (LAN), a wide area network (WAN), a mobile radio communication network, and a Wibro (Wireless Broadband Internet). can be implemented.

So far, a user-defined currency transaction system based on a block chain according to an embodiment of the present invention has been described with reference to FIG. 5 . Next, a method of verifying transaction data performed in the user-defined currency transaction system will be described in detail with reference to FIGS. 6A to 7 . The verification method may be performed, for example, by each block chain node constituting the block chain network 200 .

6A and 6B are diagrams illustrating the structure of transaction data for a user-defined currency based on Bitcoin, and FIG. 7 is an exemplary flowchart of a transaction data verification method.

6A and 6B, the transaction data 40 recorded in each block of block chain data includes a meta unit 41, an input unit 43, and an output unit 45, and the meta unit 41 includes ASSET ID indicating the type of user-defined currency used for the transaction and ASSET AMOUNT information indicating the transaction amount of the user-defined currency are included. The input unit 43 and the output unit 45 include the UTXO information of Bitcoin.

For a more detailed example, in the case of a transaction 50 in which Hong Gil-dong (payer) pays 100 points to Kim Gap-sun (recipient), information “100” of the amount of money traded in the meta unit 51 is included, and the input unit 53 includes UTXO information of Bitcoin connected to the points held by Gil-dong Hong, and UTXO information generated as a result of the transaction is included in the output unit 55.

Then, as shown in FIGS. 6B and 7, whether the monetary amount information of the points recorded in the meta unit 51 and the UTXO information, which is the Bitcoin money information recorded in the output unit 55, match (that is, the monetary value) is the same), a first verification step (S150) may be performed, and a second verification step (S170) of UTXO information indicating the amount of bitcoin held by the payer may be performed. Alternatively, a third verification step of whether the total value of previously issued points and the total value of bitcoins used for issuing points match may be performed. When the validity of the transaction is verified according to the above-described verification step, whether the points are double paid may also be automatically verified. According to the above-described first and second rules, when a transaction for a first amount of user-defined currency is processed on the blockchain network 200, a transaction for virtual currency of a second amount of money having the same value as the first amount of money is performed This is because they are linked and processed.

In this way, depending on whether the currency value of the traded user-defined currency matches the currency value of the traded virtual currency, the validity of the transaction for the user-defined currency can be verified without a separate transaction verification application. That is, in the user-defined currency transaction system according to the embodiment of the present invention, since the core elements of the block chain are used as it is, there is no need to add a separate transaction verification application, and thus, transaction service scalability can be easily provided. .

For example, the user-defined currency trading system according to an embodiment of the present invention may provide a transaction service for a plurality of user-defined currencies without additional components. This will be described in more detail with reference to FIGS. 8 to 10 .

8 is a diagram for explaining an example of providing a transaction service for a plurality of user-defined currencies defined according to a business use case.

Referring to FIG. 8 , a plurality of user-defined currencies 65a to 65c linked to virtual currency (e.g. Bitcoin, Ether) on the blockchain 69 through the open asset protocol 67 may be defined. For example, the operator of the transaction system defines the user-defined currency 65a to 65c to indicate different types of points, such as points for charging points, points for rewards, and points for marketing, respectively, or points for domestic use, points for Americas, It can be defined to point to points that are distinguished by region, such as points for China. This may be defined in various forms by the operator according to the business use cases 61a and 61b, and may be defined in any form.

In this embodiment, when each user-defined currency 65a to 65c is issued, virtual currency having the same value may be used. For example, if the monetary value of each user-defined currency and virtual currency is the same, the first user-defined currency is defined as points for domestic use, and the second user-defined currency is defined as points for US use, 1,000 points for domestic use are 1,000 virtual currency may be used to be issued, and 100 virtual currency may be used to issue 100 American points.

Through this, the type of user-defined currency is diversified due to the expansion of the business use case, and even if the unit value of each user-defined currency is different, transaction verification is possible according to the block chain protocol, so the scalability of the system is greatly improved can be

Meanwhile, as described above, the user-defined currency issued in conjunction with the virtual currency may be stored in the system electronic wallet until there is a purchase request from the customer. When a plurality of user-defined currencies are defined, the system electronic wallet may be implemented as an electronic wallet 70 for integrated management of a plurality of user-defined currencies, as shown in FIG. 9 . Alternatively, as shown in FIG. 10, it may be implemented as an electronic wallet that manages each user-defined currency as a separate electronic wallet (81 to 85).

According to an embodiment, when each user-defined currency is managed separately, the system electronic wallet may be implemented in the structure of a hierarchical deterministic wallet (HD-Wallet). In this case, there is an advantage that different rights and roles can be easily granted according to the hierarchical topological relationship of each electronic wallet.

So far, an example of providing a transaction service for a plurality of user-defined currencies has been described with reference to FIGS. 8 to 10 . Hereinafter, the configuration and operation of each component constituting the blockchain-based user-defined currency transaction system according to an embodiment of the present invention will be described with reference to FIGS. 11 and 12 .

11 is a block diagram illustrating the service providing server 100, which is one component of the user-defined currency transaction system.

Referring to FIG. 11 , the service providing server 100 may include a service request processing unit 110 , an authentication processing unit 130 , a communication unit 150 , and a control unit 170 . However, only the components related to the embodiment of the present invention are illustrated in FIG. 11 . Accordingly, those skilled in the art to which the present invention pertains can see that other general-purpose components other than the components shown in FIG. 11 may be further included. In addition, it should be noted that each of the components of the service providing server 100 shown in FIG. 11 represents functionally separated functional elements, and at least one component may be implemented in a form that is integrated with each other in an actual physical environment. do.

Looking at each component, the service request processing unit 110 processes various transaction requests for user-defined currency received from the user terminal 300 and/or the store terminal 400 through the block chain network 200 . A detailed description thereof will be described later with reference to FIGS. 13 to 18 .

The authentication processing unit 130 processes all authentication-related functions such as member registration and login for a user who uses a transaction service for user-defined currency. The login method may be implemented in any manner, such as password-based login or certificate-based login.

The communication unit 150 provides a data communication function with each component constituting the user-defined currency transaction system. To this end, the communication unit 150 may include a wired Internet module, a mobile communication module, or a wireless communication module.

The control unit 170 controls the overall operation of each component of the service providing server 100 . The control unit may include a central processing unit (CPU), a micro processor unit (MPU), a micro controller unit (MCU), or any type of processor well known in the art. Also, the controller may perform an operation on at least one application or program for executing the method according to the above-described embodiments of the present invention.

Meanwhile, although not shown in FIG. 11 , the service providing server 100 may be configured to further include a storage unit (not shown). The storage unit (not shown) may non-temporarily store one or more computer programs for performing various operations of the service providing server 100 , member information, authentication information, and the like. The storage unit (not shown) is a nonvolatile memory such as a read only memory (ROM), an erasable programmable ROM (PROM), an electrically erasable programmable ROM (EEPROM), a flash memory, a hard disk, a removable disk, or a technical field to which the present invention pertains It may be configured to include a computer-readable recording medium in any form well known in .

Next, with reference to FIG. 12 , the user terminal 300 which is one component of the user-defined currency transaction system will be described.

Referring to FIG. 12 , the user terminal 300 may include an authentication processing unit 310 , an electronic wallet 330 , a communication unit 350 , a display unit 370 , and a control unit 390 . However, only the components related to the embodiment of the present invention are illustrated in FIG. 12 . Accordingly, one of ordinary skill in the art to which the present invention pertains can know that other general-purpose components other than the components shown in FIG. 12 may be further included. In addition, it is noted that each component of the user terminal 100 shown in FIG. 12 represents functional elements that are functionally separated, and that at least one component may be implemented in a form that is integrated with each other in an actual physical environment. .

Looking at each component, the authentication processing unit 310 provides various authentication functions required to perform a user-defined currency transaction. For example, when a transaction service request is made, the authentication processing unit 310 processes the input user's electronic signature in conjunction with the service providing server 100 .

The electronic wallet 330 is a block chain application that stores user-owned user-defined currency and/or virtual currency, and provides a transaction service to the user by interworking with the block chain network 200 and/or the service providing server 100 .

The communication unit 350 provides a data communication function with each component constituting the user-defined currency transaction system. To this end, the communication unit 350 may include a wired Internet module, a mobile communication module, or a wireless communication module.

The display unit 370 displays a transaction progress status, a barcode or QR code used for a transaction, and the like. To this end, the display unit 370 may be configured to include an output device such as a monitor or a touch screen.

The controller 390 controls the overall operation of each component of the user terminal 300 . The control unit may include a central processing unit (CPU), a micro processor unit (MPU), a micro controller unit (MCU), or any type of processor well known in the art. Also, the controller may perform an operation on at least one application or program for executing the method according to the above-described embodiments of the present invention.

Meanwhile, although not shown in FIG. 12 , the user terminal 300 may be configured to further include an input unit (not shown) and a storage unit (not shown).

The input unit (not shown) receives various types of inputs from the user to perform a transaction service for user-defined currency. To this end, the input unit (not shown) may be configured to include an input device such as a keyboard, a mouse, or a touch screen.

The storage unit (not shown) may non-temporarily store one or more computer programs for performing various operations of the user terminal 100 . The storage unit (not shown) is a nonvolatile memory such as a read only memory (ROM), an erasable programmable ROM (PROM), an electrically erasable programmable ROM (EEPROM), a flash memory, a hard disk, a removable disk, or a technical field to which the present invention pertains It may be configured to include a computer-readable recording medium in any form well known in .

For reference, the store terminal 400 may also be implemented in a configuration similar to that of the user terminal 300 . However, in the store terminal 400, the authentication processing unit 310 is excluded, or the electronic wallet 330 is implemented as an electronic wallet for stores and an electronic wallet for rewards, and some components are added or excluded as necessary. can be composed of

Up to now, each component of the devices 100 and 300 described with reference to FIGS. 11 and 12 is software or hardware such as a field programmable gate array (FPGA) or an application-specific integrated circuit (ASIC). ) can mean However, the above components are not meant to be limited to software or hardware, and may be configured to be in an addressable storage medium or configured to execute one or more processors. A function provided in the above components may be implemented by a more subdivided component, or may be implemented as a single component that performs a specific function by combining a plurality of components.

So far, with reference to FIGS. 11 and 12 , the configuration and operation of the service providing server 100 and the user terminal 300 constituting the blockchain-based user-defined currency transaction system have been briefly reviewed. Hereinafter, with reference to FIGS. 13 to 18 , an operation of processing various types of transactions in a blockchain-based user-defined currency transaction system according to some embodiments of the present invention will be described. For convenience of understanding, it is assumed that the user-defined currency is points.

13 and 14 are diagrams for explaining a process in which point charging is processed among types of transactions performed in a user-defined currency transaction system according to an embodiment of the present invention.

Point charging (or purchase) refers to a transaction type in which a user pays a predetermined real currency and purchases points equal to the value paid from an operator.

Referring to FIG. 13 , the service providing server 100 receiving the point recharge request from the user terminal 300 checks the payment result such as real account or card payment, and according to the payment result, the block chain network 200 Through the process, the predetermined points are transferred from the system electronic wallet to the user electronic wallet. A detailed processing process for this is shown in FIG. 14 .

Referring to FIG. 14, first, points are issued in the block chain network 200, and the issued points are stored in the system electronic wallet (S210, S220). For example, as virtual currency is issued through mining of block generating nodes, the same amount of points may be issued. The issuance record of points is recorded in the distributed ledger, which is blockchain data.

Next, when a point charging request is received from the user terminal 300 (S230), the service providing server 100 requests the block chain network 200 to process the point charging (S240). Then, the block chain nodes constituting the block chain network 200 verify and process the transaction in which the user transfers points from the system electronic wallet to the electronic wallet, and record the transaction in the block (S250, S280). When the requested transaction is processed, the processing completion is notified to the service providing server 100 (S260), and the service providing server 100 notifies the point charging completion to the user terminal 300 (S270).

Next, with reference to FIGS. 15 and 16 , a process for accumulating points will be described.

Point accumulation refers to a type of transaction that provides a reward according to a user's purchase of goods and/or services as points. For example, it may be viewed as a transaction type indicating a case in which points are accumulated at a predetermined rate as a user purchases a product with points or real money at an affiliated store.

Referring to FIG. 15 , the service providing server 100 receiving the point accumulation request from the store terminal 400 processes a predetermined point to be transferred from the store electronic wallet to the user's electronic wallet through the block chain network 200 . do. The points for accumulation stored in the store electronic wallet may be points purchased in advance by the store operator. However, according to an embodiment, the point accumulation may be performed by transferring the points stored in the system electronic wallet to the user's electronic wallet without the operator of the store purchasing the points in advance.

According to an embodiment, the points for accumulation may be defined as a separate user-defined currency different from the general points. In this case, the store terminal 400 may be configured to include an electronic wallet for stores storing general points and an electronic wallet for rewards storing points for accumulation, respectively, and in the electronic wallet for rewards, the user's electronic wallet Points for accumulation may be transferred to

16 illustrates a processing process in which points for accumulation purchased by the store operator are accumulated in the user's electronic wallet as the user purchases goods and/or services.

Referring to FIG. 16 , first, in response to a purchase request for points for accumulation received from the store terminal 400 , a purchase process for the points for accumulation is performed ( S310 to S360 ). This is similar to the user's point purchase processing process, and a detailed description thereof will be omitted.

Next, when the store terminal 400 receives payment information for goods and/or services from the user terminal 300 ( S370 ), it transmits a point accumulation request to the service providing server 100 ( S380 ).

In response to the earning request, the service providing server 100 requests the processing of point accumulation through the block chain network 200 (S390), and the points for accumulation are transferred from the store electronic wallet to the user's electronic wallet (S400) ), the point accumulation is completed by recording the transaction details in the distributed ledger (S440).

Next, a process in which point withdrawal is processed will be described with reference to FIGS. 17 and 18 .

Point withdrawal refers to a type of transaction in which the points purchased by the user are converted back into real money. For example, through the point withdrawal, the user may receive points purchased in real money through a real money dispenser linked to the service providing server 100 in real money. Hereinafter, it is assumed that the real money dispenser is an automatic teller machine (ATM) device.

Referring to FIG. 17 , the service providing server 100 receiving the point withdrawal request from the user terminal 300 transmits a payment request to the ATM 500 , and deduction processing for points through the block chain network 200 is performed. request to be done. A detailed processing process for this is shown in FIG. 18 .

Referring to FIG. 18 , the service providing server 100 receiving the point withdrawal request from the user terminal 300 first checks the user's point balance through the block chain network 200 ( S510 to S540 ). Through the result of checking the balance, the service providing server 100 determines whether withdrawal is possible, and notifies the determination result to the user terminal 300 ( S550 ), and only when withdrawal is possible, the subsequent process is performed.

Next, the service providing server 100 authenticates the ATM 500 that will pay real money to the user. For example, the user checks the authentication information (eg password, QR code) delivered by the service providing server 100 to the ATM 500 , and transmits the authentication information to the service providing server 100 through the user terminal 300 . By transferring, authentication for the ATM 500 may be performed (S560 to S600). However, depending on the embodiment, the authentication method for the ATM may vary freely.

When the authentication of the ATM 500 is completed, authentication of the user terminal 300 and electronic signature processing for the corresponding withdrawal transaction may be performed (S610 to S630). The authentication of the user terminal may be performed in any manner.

When the authentication for the user terminal 300 and the electronic signature processing for the withdrawal transaction are completed, the service providing server 100 transmits a request for payment of real money to the ATM 500 (S650), and the user uses the ATM (500) You will be paid in real money as much as the points deducted from (S660).

When the payment processing completion is notified (S670), the service providing server 100 requests that the user's point deduction transaction be processed through the block chain network 200 (S680). For example, the point deduction may be performed in such a way that points are transferred from the user's electronic wallet to the system electronic wallet (S690).

So far, with reference to FIGS. 13 to 18 , the operation of processing various types of transactions in a blockchain-based user-defined currency transaction system according to some embodiments of the present invention has been described.

As described above, the user-defined currency is linked with the real currency, and transaction services such as purchase, accumulation, and withdrawal of the user-defined currency can be provided based on the block chain. Accordingly, the usefulness of the user-defined currency is improved, the stability of the transaction service is guaranteed as transactions are performed through the block chain, and user convenience can also be improved.

The concept of the present invention described with reference to FIGS. 5 to 18 may be implemented as computer-readable codes on a computer-readable medium. The computer-readable recording medium may be, for example, a removable recording medium (CD, DVD, Blu-ray disk, USB storage device, removable hard disk) or a fixed recording medium (ROM, RAM, computer-equipped hard disk). can The computer program recorded on the computer-readable recording medium may be transmitted to another computing device through a network such as the Internet and installed in the other computing device, thereby being used in the other computing device.

Although acts are shown in a particular order in the drawings, it should not be understood that the acts must be performed in the specific order or sequential order shown, or that all illustrated acts must be performed to obtain a desired result. In certain circumstances, multitasking and parallel processing may be advantageous. Moreover, the separation of the various components in the embodiments described above should not be construed as necessarily requiring such separation, and the program components and systems described may generally be integrated together into a single software product or packaged into multiple software products. It should be understood that there is

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. can understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (17)

Configures a peer-to-peer (P2P) based block chain network, distributes and manages block chain data in which multiple blocks are connected in a chain form, and uses the block chain data to define a user-defined currency based on virtual currency a plurality of blockchain nodes that record transaction data for and
In conjunction with the block chain network, including a service providing server that provides a transaction service for the user-defined currency,
When the transaction for the user-defined currency is processed, the transaction for the virtual currency is processed together,
The transaction data is
Information on the first amount of money of the user-defined currency to be traded, information about the second amount of virtual currency to be traded, and information about the amount of money held by the payer who pays the virtual currency,
The verification of the transaction data is
a first verification step of verifying whether the value of the first monetary amount matches the value of the second monetary amount; and
Performed through a second verification step of verifying the value of the money held by the payer in order to prevent double payment,
Blockchain-based custom currency trading system. According to claim 1,
When the user-defined currency of the third monetary amount is issued, the virtual currency of the fourth monetary amount is used;
characterized in that the value of the third amount of money and the value of the fourth amount of money are the same,
Blockchain-based custom currency trading system. According to claim 1,
The user-defined currency is characterized in that defined through an open asset protocol (open asset protocol),
Blockchain-based custom currency trading system. delete delete According to claim 1,
The verification of the transaction data is
characterized in that it is performed through a third verification step of further verifying whether the total issued value of the previously issued user-defined currency matches the total value of the virtual currency used for the issuance of the user-defined currency,
Blockchain-based custom currency trading system. delete According to claim 1,
The plurality of blockchain nodes are
A block generating node that generates (mining) a new block added to the block chain data,
In response to the block generating node generating the new block, a preset amount of new virtual currency is issued,
In response to the issuance of the new virtual currency, a new user-defined currency of the same value as the new virtual currency is issued,
Blockchain-based custom currency trading system. According to claim 1,
The user-defined currency is
a first user-defined currency and a second user-defined currency;
The service providing server,
Provide a transaction service for the first user-defined currency and the second user-defined currency,
When the first user-defined currency of the 3-1 monetary amount is issued, the virtual currency of the 3-2 monetary amount is used;
When the second user-defined currency of the 4-1 monetary amount is issued, the virtual currency of the 4-2 monetary amount is used,
The value of the 3-1 money amount is the same as the value of the 3-2 money amount,
It is characterized in that the value of the 4-1 money amount and the value of the 4-2 money amount are also the same,
Blockchain-based custom currency trading system. 10. The method of claim 9,
The previously issued first user-defined currency and the previously issued second user-defined currency are stored in the designated e-wallet until the user's purchase request is processed,
The first user-defined currency is stored in a first electronic wallet, and the second user-defined currency is stored in a second electronic wallet different from the first electronic wallet,
Blockchain-based custom currency trading system. According to claim 1,
The service providing server,
In response to a purchase request for user-defined currency received from a user's terminal, comprising a service request processing unit for processing the purchase request through the block chain network,
The processing of the purchase request is,
In response to a purchase processing request received from the service request processing unit, a first blockchain node among the plurality of blockchain nodes sends an amount of user-defined currency corresponding to the purchase request among previously issued user-defined currency. characterized in that it is performed through a first processing step of transferring to an electronic wallet and a second processing step of recording the transaction data of the first processing step in the block chain data,
Blockchain-based custom currency trading system. Configures a peer-to-peer (P2P) based blockchain network, distributes and manages blockchain data in which a plurality of blocks are connected in a chain form, and uses the blockchain data to define virtual currency and the virtual currency based a plurality of blockchain nodes that issue the point-type currency and record transaction data for the virtual currency and the point-type currency; and
In conjunction with the block chain network, including a service providing server that provides a transaction service for the point type currency,
The issued point type currency is stored in a designated electronic wallet until the user's charging request is processed, and data according to the issuance of the point type currency is recorded in the block chain data,
When the transaction for the point type currency is processed, the transaction for the virtual currency is processed together,
The transaction data is
Information on the first amount of money of the point type currency to be traded, information about the second amount of virtual currency to be traded, and information on the amount of money held by the payer who pays the virtual currency,
The verification of the transaction data is
a first verification step of verifying whether the value of the first monetary amount matches the value of the second monetary amount; and
Performed through a second verification step of verifying the value of the money held by the payer in order to prevent double payment,
Blockchain-based point-type currency trading system. 13. The method of claim 12,
The service providing server,
In response to the point-type currency purchase request received from the user's terminal, confirm the payment result of real money for the purchase of the point-type currency, and process the purchase request for the point-type currency through the block chain network including a service request processing unit;
The processing of the purchase request is,
A first block chain node among the plurality of block chain nodes responds to a purchase processing request received from the service request processing unit, and from among the point type currency stored in the designated electronic wallet, an amount of point type currency corresponding to the purchase request characterized in that it is performed through a first processing step of transferring to the user's electronic wallet and a second processing step of recording the transaction data of the first processing step in the block chain data,
Blockchain-based point-type currency trading system. 13. The method of claim 12,
The service providing server,
A service request processing unit that is received from the terminal of the store and responds to a request for accumulation of point-type currency to a designated user as a payee, and processes the request for accumulation of the point-type currency through the block chain network,
The processing of the above accumulation request,
A first block chain node among the plurality of block chain nodes responds to the deposit request received from the service request processing unit, and points type currency in an amount corresponding to the deposit request among the point type money stored in the electronic wallet of the store. characterized in that it is performed through a first processing step of transferring to the designated user's electronic wallet and a second processing step of recording the transaction data of the first processing step in the block chain data,
Blockchain-based point-type currency trading system. 13. The method of claim 12,
The service providing server,
In response to a request for withdrawal of point type currency received from a user's terminal, a service request processing unit for processing the request for withdrawal of point type currency through the block chain network and real money dispenser,
The processing of the withdrawal request is
A first step in which the service request processing unit checks the amount of point-type currency stored in the user's electronic wallet through the block chain network and determines whether the withdrawal request can be processed;
When the service request processing unit can process the withdrawal request as a result of the determination, the service request processing unit transmits a payment request for the amount of real money corresponding to the withdrawal request to the real money dispenser, and receives the processing result of the payment request Step 2 and
The service request processing unit, in response to receiving the processing result, is performed through a third step of processing the request for deduction of the point type currency through the block chain network through the block chain network,
The third step is
A first block chain node among the plurality of block chain nodes responds to a request for deduction of point type currency received from the service request processing unit, and an amount corresponding to the withdrawal request among point type currency stored in the user's electronic wallet Step 3-1 of transferring the point-type currency of , to the designated electronic wallet, and a 3-2 processing step of recording the transaction data of step 3-1 in the block chain data,
Blockchain-based point-type currency trading system. 13. The method of claim 12,
The plurality of blockchain nodes are
A block generating node that generates (mining) a new block added to the block chain data,
In response to the block generating node generating the new block, a preset amount of new virtual currency is issued,
In response to the issuance of the new virtual currency, the same amount of new point type currency as the new virtual currency is issued, and the issued new point type currency is stored in the designated electronic wallet,
Blockchain-based point-type currency trading system. delete

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