Method and system for managing token on blockchain network

Abstract

According to an aspect of the present invention, a method for managing a token on a blockchain network is provided, the method comprising the steps of: allowing transmission of cryptocurrency held by a user from a first wallet of the user to a second wallet corresponding to the cryptocurrency; allowing transmission of identification information of the cryptocurrency deposited in the second wallet to a token management solution linked to the second wallet; on the basis of the identification information, allowing the token management solution to issue a token having a predetermined association with the cryptocurrency deposited in the second wallet; and allowing the token to be transmitted from the token management solution to a wallet designated by the user.

Description

Method and system for managing tokens in a blockchain network

[0001] The present invention relates to a method and system for managing tokens in a blockchain network.

[0002] In the field of blockchain technology, a stablecoin refers to a cryptocurrency pegged to fiat currency or real assets. A prime example of a stablecoin is USDT, which is pegged to the US dollar, the legal tender of the United States.

[0003] However, conventional stablecoins were implemented only to be linked to fiat currency or real assets, and not to existing cryptocurrencies such as Bitcoin and Ethereum.

[0004] Due to this relationship, there were limitations in resolving problems that arose when using previously issued cryptocurrencies directly on blockchain networks, such as slow transaction processing speeds and difficulties in applying them to newly developed projects, using conventional stablecoins.

[0005] The purpose of the present invention is to solve all of the problems of the above-mentioned prior art.

[0006] In addition, another purpose of the present invention is to enable the issued cryptocurrency and the corresponding token to be used complementarily on a blockchain network by issuing a new type of token linked to the issued cryptocurrency.

[0007] A representative configuration of the present invention to achieve the above purpose is as follows.

[0008] According to one aspect of the present invention, a method for managing tokens in a blockchain network is provided, comprising the steps of: allowing a cryptocurrency held by a user to be transferred from a first wallet of the user to a second wallet corresponding to the cryptocurrency; allowing identification information of the cryptocurrency deposited in the second wallet to be transferred to a token management solution linked to the second wallet; allowing the token management solution to issue a token having a predetermined association with the cryptocurrency deposited in the second wallet based on the identification information; and allowing the token to be transferred from the token management solution to a wallet designated by the user.

[0009] According to another aspect of the present invention, a system for managing tokens in a blockchain network is provided, comprising: a first transfer management unit for transferring cryptocurrency held by a user from a first wallet of the user to a second wallet corresponding to the cryptocurrency; a second transfer management unit for transferring identification information of the cryptocurrency deposited in the second wallet to a token management solution linked to the second wallet; an issuance management unit for causing the token management solution to issue a token having a predetermined association with the cryptocurrency deposited in the second wallet based on the identification information; and a third transfer management unit for transferring the token from the token management solution to a wallet designated by the user.

[0010] In addition, a non-transitory computer-readable recording medium recording another method for implementing the present invention, another system, and a computer program for executing the method are further provided.

[0011] According to the present invention, by issuing a new type of token linked to an already issued cryptocurrency, the already issued cryptocurrency and the token can be used complementarily on a blockchain network.

[0012] FIG. 1 is a diagram schematically illustrating the configuration of an entire system for managing tokens in a blockchain network according to one embodiment of the present invention.

[0013] FIG. 2 is a drawing detailing the internal configuration of a management system according to one embodiment of the present invention.

[0014] FIG. 3 is a diagram exemplarily showing a process for issuing a token according to one embodiment of the present invention.

[0015] FIG. 4 is a diagram exemplarily showing a process of withdrawing cryptocurrency according to one embodiment of the present invention.

[0016] FIG. 5 is a diagram exemplarily showing a process in which tokens are issued and cryptocurrency is withdrawn according to one embodiment of the present invention.

[0017] <Explanation of symbols>

[0018] 100: Communications network

[0019] 200: Node

[0020] 300: Management System

[0021] 310: Transmission Management Department

[0022] 320: Issuance Management Department

[0023] 330: Withdrawal Management Department

[0024] 340: Communications Department

[0025] 350: Control Unit

[0026] The following detailed description of the present invention refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention, while different from each other, are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be modified and implemented from one embodiment to another without departing from the spirit and scope of the present invention. Furthermore, it should be understood that the positions or arrangements of individual components within each embodiment may also be modified without departing from the spirit and scope of the present invention. Accordingly, the following detailed description is not to be taken in a limiting sense, and the scope of the present invention is to be construed to encompass the scope of the claims and all equivalents thereof. Like reference numerals in the drawings represent the same or similar elements throughout the several aspects.

[0027] Hereinafter, various preferred embodiments of the present invention will be described in detail with reference to the attached drawings so that a person having ordinary skill in the art to which the present invention pertains can easily practice the present invention.

[0028] Composition of the entire system

[0029] FIG. 1 is a diagram schematically illustrating the configuration of an entire system for managing tokens in a blockchain network according to one embodiment of the present invention.

[0030] As illustrated in FIG. 1, the entire system according to one embodiment of the present invention may include a communication network (100), a node (200), and a management system (300).

[0031] First, the communication network (100) according to one embodiment of the present invention can be configured regardless of the communication mode such as wired communication or wireless communication, and can be configured with various communication networks such as a local area network (LAN), a metropolitan area network (MAN), and a wide area network (WAN). Preferably, the communication network (100) referred to herein may be the well-known Internet or the World Wide Web (WWW). However, the communication network (100) is not necessarily limited thereto, and may include at least a portion of a well-known wired or wireless data communication network, a well-known telephone network, or a well-known wired or wireless television communication network.

[0032] For example, the communication network (100) may be a wireless data communication network that implements conventional communication methods such as WiFi communication, WiFi-Direct communication, Long Term Evolution (LTE) communication, 5G communication, Bluetooth communication (including Bluetooth Low Energy (BLE) communication), infrared communication, ultrasonic communication, etc., at least in part.

[0033] Next, a node (200) according to one embodiment of the present invention is a contact point or connection point that can communicate with another node (200) through a communication network (100), and may be a concept including a physical node such as a server, computer, laptop, smart phone, tablet PC, etc. (i.e., a digital device equipped with memory means and equipped with a microprocessor to have computational capabilities) or a logical node such as an application, program module, virtual machine, etc. (i.e., a virtual node).

[0034] According to one embodiment of the present invention, a node (200) may include a management system (300) described below in the form of a program module, such as an application or widget. Furthermore, such program modules may be downloaded from an external application distribution server (not shown) or an external system (not shown).

[0035] Meanwhile, a blockchain network according to one embodiment of the present invention may be a network in which information to be stored on the network is jointly verified by a plurality of nodes (200) participating in the network, and the verified information is recorded and shared on the network, thereby ensuring the integrity and reliability of the recorded information without relying on an authorized third party. For example, such a blockchain network may be a network that has at least some characteristics similar to those of conventional blockchain networks such as Ethereum, Binance Smart Chain, NiktoNet, etc. In addition, according to one embodiment of the present invention, such a blockchain network may be a concept that includes various types of blockchain networks, such as a private blockchain network, a public blockchain network, or a hybrid network of a private blockchain and a public blockchain.

[0036] Additionally, in a blockchain network according to one embodiment of the present invention, cryptocurrencies may be circulated. For example, in a blockchain network according to one embodiment of the present invention, previously issued cryptocurrencies such as Bitcoin (BTC) and Ethereum (ETH) may be circulated, and additional cryptocurrencies referred to as gearing tokens may be issued and circulated. For convenience of explanation, only previously issued cryptocurrencies such as Bitcoin (BTC) and Ethereum (ETH) will be referred to as cryptocurrency (COIN), and gearing tokens will be referred to as tokens (GT).

[0037] Next, the management system (300) according to one embodiment of the present invention may perform the following functions: (a) a function of allowing a cryptocurrency (COIN) held by a user to be transferred from the user's first wallet to a second wallet corresponding to the cryptocurrency (COIN), (b) a function of allowing identification information of the cryptocurrency (COIN) deposited in the second wallet to be transferred to a token management solution linked to the second wallet, (c) a function of allowing the token management solution to issue a token (GT) having a predetermined correlation with the cryptocurrency (COIN) deposited in the second wallet based on the above identification information, and (d) a function of allowing the token (GT) to be transferred from the token management solution to a wallet designated by the user. According to one embodiment of the present invention, the above functions of the management system (300) may be performed based on at least one consensus algorithm operating on a blockchain network.

[0038] The configuration and function of the management system (300) according to the present invention will be described in detail below. Meanwhile, although the management system (300) has been described as above, such description is exemplary, and it is obvious to those skilled in the art that at least some of the functions or components required for the management system (300) may be realized within the node (200) or an external system (not shown) or included in the node (200) or an external system, as necessary. For example, a user may use an application including at least some of the functions of the management system (300) according to the present invention through his / her node (200), or may access a website that provides at least some of the functions of the management system (300) according to the present invention by using the node (200), thereby enabling management of a token (GT) according to the present invention.

[0039] Configuration of the management system

[0040] Hereinafter, the internal configuration and functions of each component of the management system (300) that performs important functions for implementing the present invention will be examined with reference to FIGS. 2 to 5.

[0041] FIG. 2 is a drawing showing in detail the internal configuration of a management system (300) according to one embodiment of the present invention.

[0042] As illustrated in FIG. 2, a management system (300) according to one embodiment of the present invention may include a transmission management unit (310), an issuance management unit (320), a withdrawal management unit (330), a communication unit (340), and a control unit (350). Here, the transmission management unit (310) may include a first transmission management unit (311) to a sixth transmission management unit (316). According to one embodiment of the present invention, at least some of the transmission management unit (310), the issuance management unit (320), the withdrawal management unit (330), the communication unit (340), and the control unit (350) of the management system (300) may be program modules that communicate with an external system (not illustrated). These program modules may be included in the management system (300) in the form of an operating system, an application program module, or other program modules, and may be physically stored in various known memory devices. Additionally, these program modules may be stored in a remote storage device capable of communicating with the management system (300). Meanwhile, these program modules include, but are not limited to, routines, subroutines, programs, objects, components, data structures, etc. that perform specific tasks or execute specific abstract data types, as described below, according to the present invention.

[0043] First, let us look at the process of issuing a token (GT) by the management system (300) with reference to FIG. 3.

[0044] FIG. 3 is a drawing exemplarily showing a process of issuing a token (GT) according to one embodiment of the present invention.

[0045] In step S110, the first transfer management unit (311) according to one embodiment of the present invention can cause the cryptocurrency (COIN) held by the user to be transferred from the user's first wallet (A) to the second wallet (B) corresponding to the cryptocurrency (COIN).

[0046] According to one embodiment of the present invention, the second wallet (B) may be composed of multiple wallets, and each cryptocurrency (COIN) may correspond to a different second wallet (B). For example, assuming that the second wallet (B) is composed of a 2-1 wallet (B1) to a 2-n wallet (Bn) (where n is a natural number greater than or equal to 2), Bitcoin (BTC) may correspond to the 2-1 wallet (B1), and Ethereum (ETH) may correspond to the 2-2 wallet (B2). In this manner, each cryptocurrency (COIN) may correspond to a plurality of second wallets (B).

[0047] In step S120, the second transfer management unit (312) according to one embodiment of the present invention can cause identification information (e.g., information on the type and quantity of cryptocurrency (COIN)) of cryptocurrency (COIN) deposited in the second wallet (B) to be transmitted to a token management solution (C) linked to the second wallet (B). Here, the token management solution (C) may be configured in the form of a program module, such as components included in the management system (300), and may perform functions such as supporting the issuance of tokens (GT) or the withdrawal of cryptocurrency (COIN) based on the issued tokens (GT). The token management solution (C) may be included outside the management system (300), but all or part of it may also be included within the token management system (300).

[0048] Meanwhile, according to one embodiment of the present invention, the token management solution (C) may be composed of multiple tokens, similar to the second wallet (B), and the token management solutions (C) linked to each second wallet (B) may be different. For example, assuming that the token management solution (C) is composed of the first token management solution (C1) to the n-th token management solution (Cn) (where n is a natural number greater than or equal to 2), the 2-1 wallet (B1) may be linked to the first token management solution (C1), and the 2-2 wallet (B2) may be linked to the second token management solution (C2). In this manner, each second wallet (B) may be linked to the token management solution (C) composed of multiple tokens.

[0049] In step S130, the issuance management unit (320) according to one embodiment of the present invention can cause the token management solution (C) to issue a token (GT) having a predetermined association with the cryptocurrency (COIN) deposited in the second wallet (B) based on the identification information of the cryptocurrency (COIN).

[0050] Specifically, according to one embodiment of the present invention, the relationship between the cryptocurrency (COIN) deposited in the second wallet (B) and the token (GT) may include a relationship in which the quantity of the token (GT) is directly proportional to the quantity of the cryptocurrency (COIN) deposited in the second wallet (B) at a predetermined ratio. That is, the issuance management unit (320) according to one embodiment of the present invention may cause the token management solution (C) to issue tokens (GT) in an amount directly proportional to the quantity of the cryptocurrency (COIN) deposited in the second wallet (B) at a predetermined ratio. However, it should be noted that the above-described relationship does not necessarily include only the above-mentioned direct proportional relationship, and various relationships may be included within the scope that can achieve the purpose of the present invention.

[0051] Meanwhile, the issuance management unit (320) according to one embodiment of the present invention can, during the process of issuing a token (GT), include information about at least one of a second wallet (B) in which cryptocurrency (COIN) is deposited and a token management solution (C) that has been decided to issue the token (GT) as unique information of the token (GT).

[0052] For example, if Bitcoin (BTC) held by a user is transferred from the user's first wallet (A) to a second-first wallet (B1) corresponding to Bitcoin (BTC), and identification information of the Bitcoin (BTC) deposited in the second-first wallet (B1) is transferred to a first token management solution (C1) linked to the second-first wallet (B1), and the first token management solution (C1) decides to issue a token (GT), the token (GT-BTC; or may be referred to as BTGT) issued by the first token management solution (C1) may include information regarding at least one of the second-first wallet (B1) and the first token management solution (C1).

[0053] For another example, if Ethereum (ETH) held by a user is transferred from the user's first wallet (A) to a second-second wallet (B2) corresponding to Ethereum (ETH), and identification information of the Ethereum (ETH) deposited in the second-second wallet (B2) is transferred to a second token management solution (C2) linked to the second-second wallet (B2), and the second token management solution (C2) decides to issue a token (GT), the token (GT-ETH; or may be referred to as ETGT) issued by the second token management solution (C2) may include information regarding at least one of the second-second wallet (B2) and the second token management solution (C2).

[0054] Meanwhile, according to one embodiment of the present invention, in addition to the above information, the unique information of the token (GT) may further include various information, such as the association relationship described above (i.e., the association relationship between the cryptocurrency (COIN) deposited in the second wallet (B) and the token (GT).

[0055] In step S140, the third transfer management unit (313) according to one embodiment of the present invention can cause the issued token (GT) to be transferred from the token management solution (C) to a wallet designated by the user. Here, the wallet designated by the user may include the user's first wallet (A), but is not necessarily limited to the first wallet (A).

[0056] Next, with reference to Fig. 4, we will examine the process of withdrawing cryptocurrency (COIN) by the management system (300).

[0057] FIG. 4 is a diagram exemplarily showing a process of withdrawing cryptocurrency (COIN) according to one embodiment of the present invention.

[0058] In step S210, the fourth transfer management unit (314) according to one embodiment of the present invention can refer to the unique information of the token (GT) deposited in the first wallet (A) to transfer the token (GT) from the first wallet (A) to the token management solution (C) corresponding to the token (GT).

[0059] For example, the fourth transfer management unit (314) according to one embodiment of the present invention may refer to the fact that the unique information of the corresponding token (GT; or GT-BTC) includes information about the 2-1 wallet (B1) or information about the first token management solution (C1), and may cause the corresponding token (GT; or GT-BTC) to be transferred to the first token management solution (C1).

[0060] For another example, the fourth transfer management unit (314) according to one embodiment of the present invention may refer to the fact that the unique information of the corresponding token (GT; or GT-ETH) includes information about the second-second wallet (B2) or information about the second token management solution (C2), and cause the corresponding token (GT; or GT-ETH) to be transferred to the second token management solution (C2).

[0061] In step S220, the fifth transmission management unit (315) according to one embodiment of the present invention can cause the token management solution (C) to transmit unique information of the token (GT) to a second wallet (B) linked to the token management solution (C).

[0062] Specifically, according to one embodiment of the present invention, the token management solution (C) can extract unique information of a token (GT) received from a first wallet (A) and transmit only the extracted unique information to a second wallet (B) linked to the token management solution (C).

[0063] For example, the first token management solution (C1) can extract unique information of a token (GT-BTC) received from the first wallet (A) and transmit only the extracted unique information to the second-first wallet (B1) linked to the first token management solution (C1).

[0064] For another example, the second token management solution (C2) can extract unique information of a token (GT-ETH) received from the first wallet (A) and transmit only the extracted unique information to the second-second wallet (B2) linked to the second token management solution (C2).

[0065] In step S230, the withdrawal management unit (330) according to one embodiment of the present invention can cause cryptocurrency (COIN) to be withdrawn from the second wallet (B) based on the unique information transmitted from the token management solution (C).

[0066] Specifically, the withdrawal management unit (330) according to one embodiment of the present invention can allow cryptocurrency (COIN) to be withdrawn from the second wallet (B) by referring to the relationship included in the unique information, that is, the relationship between the cryptocurrency (COIN) and the token (GT) deposited in the second wallet (B).

[0067] For example, if the relationship between the cryptocurrency (COIN) deposited in the second wallet (B) and the token (GT) is such that the quantity of the token (GT) is directly proportional to the quantity of the cryptocurrency (COIN) deposited in the second wallet (B) at a predetermined ratio, the withdrawal management unit (330) according to one embodiment of the present invention can cause the cryptocurrency (COIN) to be withdrawn from the second wallet (B) in an amount corresponding to the quantity of the token (GT) transferred to the token management solution (C) according to the ratio.

[0068] In step S240, the sixth transfer management unit (316) according to one embodiment of the present invention can cause the cryptocurrency (COIN) for which withdrawal has been completed to be transferred from the second wallet (B) to a wallet designated by the user. Here, the wallet designated by the user may include the user's first wallet (A), but is not necessarily limited to the first wallet (A).

[0069] Meanwhile, the sixth transfer management unit (316) according to one embodiment of the present invention can cause the token management solution (C) to burn all tokens transferred from the first wallet (A) in response to cryptocurrency (COIN) being transferred from the second wallet (B) to a wallet designated by the user.

[0070] Next, with reference to Fig. 5, we will examine the overall process of issuing tokens (GT) and withdrawing cryptocurrency (COIN) by the management system (300).

[0071] FIG. 5 is a diagram exemplarily showing a process in which a token (GT) is issued and a cryptocurrency (COIN) is withdrawn according to one embodiment of the present invention.

[0072] Referring to Figure 5, the token (GT) issuance process and cryptocurrency (COIN) withdrawal process described with reference to Figures 3 and 4 can be comprehensively understood. According to one embodiment of the present invention, the cryptocurrency (COIN) withdrawal process can also be understood as a process that is performed in reverse order to the token (GT) issuance process.

[0073] Meanwhile, referring to the dashed-dotted arrow shown in the upper part of FIG. 5, during the process of issuing a token (GT), (1) causing the token management solution (C) to issue a token (GT) having a predetermined correlation with the cryptocurrency (COIN) deposited in the second wallet (B) based on the identification information of the cryptocurrency (COIN) (step S130 in FIG. 3) and (2) causing the token (GT) whose issuance is completed to be transferred from the token management solution (C) to a wallet designated by the user (step S140 in FIG. 3) may be performed based on a first contract concluded between nodes (200) of the blockchain network. This first contract may be implemented so that the contents of the contract are fully executed within the blockchain network.

[0074] In addition, referring to the dotted arrow shown at the bottom of FIG. 5, during the withdrawal process of cryptocurrency (COIN), the process of referencing the unique information of the token (GT) deposited in the first wallet (A) to transfer the token (GT) from the first wallet (A) to the corresponding token management solution (C) (step S210 in FIG. 4) may be performed based on a second contract concluded between nodes (200) of the blockchain network. This second contract may be implemented so that at least part of the contract's content is executed outside of the blockchain network (e.g., an external system).

[0075] Meanwhile, the communication unit (340) according to one embodiment of the present invention can perform a function that enables data transmission and reception from / to the transmission management unit (310), the issuance management unit (320), and the withdrawal management unit (330).

[0076] In addition, the control unit (350) according to one embodiment of the present invention can perform a function of controlling the flow of data between the transmission management unit (310), the issuance management unit (320), the withdrawal management unit (330), and the communication unit (340). That is, the control unit (350) according to the present invention can control the flow of data from / to the outside of the management system (300) or the flow of data between each component of the management system (300), thereby controlling the transmission management unit (310), the issuance management unit (320), the withdrawal management unit (330), and the communication unit (340) to perform their own functions.

[0077] The embodiments of the present invention described above may be implemented in the form of program commands that can be executed through various computer components and recorded on a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, etc., either singly or in combination. The program commands recorded on the computer-readable recording medium may be specially designed and configured for the present invention or may be known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specifically configured to store and execute program commands, such as ROMs, RAMs, and flash memories. Examples of program commands include not only machine language codes generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc. Hardware devices may be changed into one or more software modules to perform processing according to the present invention, and vice versa.

[0078] Although the present invention has been described above with specific details such as specific components and limited examples and drawings, these are provided only to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and those with ordinary knowledge in the technical field to which the present invention pertains can make various modifications and changes based on this description.

[0079] Therefore, the idea of ​​the present invention should not be limited to the embodiments described above, and not only the scope of the patent claims described below but also all scopes equivalent to or equivalently modified from the scope of the patent claims are considered to fall within the scope of the idea of ​​the present invention.

Claims

1. A method for managing tokens in a blockchain network, (a) a step for transferring cryptocurrency held by a user from the user's first wallet to a second wallet corresponding to the cryptocurrency; (b) a step for transmitting the identification information of the cryptocurrency deposited in the second wallet to a token management solution linked to the second wallet; (c) a step for causing the token management solution to issue a token having a predetermined association with the cryptocurrency deposited in the second wallet based on the identification information, and (d) a step of causing the token to be transferred to a wallet designated by the user in the token management solution; method.

2. In paragraph 1, The above relationship includes a relationship in which the quantity of the token is directly proportional to the quantity of the cryptocurrency deposited in the second wallet. method.

3. In paragraph 1, In the step (c), information about at least one of the second wallet in which the cryptocurrency is deposited and the token management solution that has decided to issue the token is included in the token as unique information of the token. method.

4. In paragraph 1, The token management solution issuing a token having a predetermined association with the cryptocurrency deposited in the second wallet based on the identification information and the token is transferred from the token management solution to a wallet designated by the user, which is performed based on a first contract concluded between nodes of the blockchain network. method.

5. In paragraph 4, The above first contract is implemented so that the contents of the contract are fully executed within the blockchain network. method.

6. In paragraph 1, (e) a step of transferring the token deposited in the first wallet to the token management solution from the first wallet by referring to the unique information of the token deposited in the first wallet; (f) a step for the token management solution to transmit the unique information of the token to the second wallet linked to the token management solution; (g) a step for withdrawing the cryptocurrency from the second wallet based on the unique information; and (h) further comprising a step of transferring the withdrawn cryptocurrency from the second wallet to a wallet designated by the user. method.

7. In paragraph 6, In step (h), in response to the withdrawal of the cryptocurrency from the second wallet to the wallet designated by the user, the token management solution burns the token. method.

8. In paragraph 6, Referring to the unique information of the token deposited in the first wallet, the token deposited in the first wallet is transferred from the first wallet to the token management solution, which is performed based on a second contract concluded between nodes of the blockchain network. method.

9. In paragraph 8, The above second contract is implemented so that at least part of the contract's contents are executed outside the blockchain network. method.

10. A non-transitory computer-readable recording medium recording a computer program for executing the method according to paragraph 1.

11. A system for managing tokens in a blockchain network. A first transfer management unit that transfers cryptocurrency held by a user from the user's first wallet to a second wallet corresponding to the cryptocurrency; A second transfer management unit that transmits the identification information of the cryptocurrency deposited in the second wallet to a token management solution linked to the second wallet; An issuance management unit that causes the token management solution to issue a token having a predetermined association with the cryptocurrency deposited in the second wallet based on the above identification information, and A third transfer management unit that allows the token to be transferred to a wallet designated by the user in the token management solution. System.

12. In paragraph 11, The above relationship includes a relationship in which the quantity of the token is directly proportional to the quantity of the cryptocurrency deposited in the second wallet. System.

13. In paragraph 11, The issuance management unit ensures that information regarding at least one of the second wallet in which the cryptocurrency is deposited and the token management solution that has decided to issue the token is included in the token as unique information of the token. System.

14. In paragraph 11, The token management solution issuing a token having a predetermined association with the cryptocurrency deposited in the second wallet based on the identification information and the token is transferred from the token management solution to a wallet designated by the user, which is performed based on a first contract concluded between nodes of the blockchain network. System.

15. In paragraph 14, The above first contract is implemented so that the contents of the contract are fully executed within the blockchain network. System.

16. In paragraph 11, A fourth transfer management unit that refers to the unique information of the token deposited in the first wallet to transfer the token deposited in the first wallet from the first wallet to the token management solution; A fifth transfer management unit that causes the token management solution to transfer unique information of the token to the second wallet linked to the token management solution; A withdrawal management unit that allows the cryptocurrency to be withdrawn from the second wallet based on the unique information, and Further comprising a sixth transfer management unit that allows the withdrawn cryptocurrency to be transferred from the second wallet to a wallet designated by the user. System.

17. In paragraph 16, The sixth transfer management unit causes the token management solution to burn the token in response to the withdrawal of the cryptocurrency from the second wallet to the wallet designated by the user. System.

18. In paragraph 16, Referring to the unique information of the token deposited in the first wallet, the token deposited in the first wallet is transferred from the first wallet to the token management solution, which is performed based on a second contract concluded between nodes of the blockchain network. System.

19. In paragraph 18, The above second contract is implemented so that at least part of the contract's contents are executed outside the blockchain network. System.

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