JP7277812B2 - Programs, information processing devices and computer systems - Google Patents

Description

The present invention relates to a program, an information processing device, and a computer system.

Conventionally, game media such as avatars are associated with other game media such as clothes and accessories to be worn on the game media, and the appearance of the game media is changed. A display technique is known (see Patent Document 1). In addition, with this technique, the changed appearance can be further changed by synthesizing text information input by the player (for example, the content to be spoken by the avatar).

JP 2018-108202 A

Here, in recent years, in games using blockchain technology, NFT (Non-Fungible Token), which defines value media including game media such as game items and characters, in other words, NFT value media are distributed between users. may be traded at The value of the NFT value medium to be traded may change depending on the appearance and other conditions. For this reason, the state of NFT value media can be an important trading point. However, the above-described conventional technology only changes the state such as the appearance of the value medium by associating it with information input from other value media or players. There is room for improvement.

The present disclosure provides a program, an information processing device, and a computer system that can improve interest in changing the state of NFT value media.

The first aspect comprises a computer comprising:
A first non-fungible token (first NFT) defining a first value medium and a second non-fungible token (second NFT) defining a second value medium are respectively associated with a first user. means of association,
a first receiving means for receiving a request from the first user to associate the first NFT and the second NFT;
second associating means for associating the first NFT and the second NFT in response to the request;
a first change means for changing the state of the first value medium based on the second value medium defined by the second NFT;
Third associating means for releasing the association with the first user and associating the first NFT and the second NFT with a second user;
second receiving means for receiving a request from the second user to cancel the association between the first NFT and the second NFT;
releasing means for releasing the association between the first NFT and the second NFT in response to the request;
functioning as second changing means for changing the state of the first value medium in response to the cancellation;
It's a program.

Also, in the first aspect, the third associating means
On the condition that the first NFT and the second NFT are associated, the first NFT and the second NFT are collectively associated with the second user,
If the first NFT and the second NFT are not associated, allow the first NFT to be associated with the second user alone, while restricting the second NFT from being associated with the second user alone can do.

Also, in the first aspect, the second association means associates the first NFT and the second NFT without requiring payment of consideration, and associates the first NFT and the second NFT. and/or to be allowed to cancel.

Also, in the first aspect, the third association means allows the first NFT to be associated with the second user alone, regardless of whether the first NFT and the second NFT are associated. Together, it may allow the second NFT to be solely associated with the second user.

Also, in the first aspect, the second association means associates the first NFT and the second NFT, and releases the association between the first NFT and the second NFT, subject to payment of consideration. at least one of

Further, in the first aspect, the third association means cancels the association with the first user for the first NFT and/or the second NFT on the condition that the second user pays for the purchase, associate with a second user;
The second association means associates the first NFT and the second NFT on the condition that the second user pays for the association,
The releasing means can release the association between the first NFT and the second NFT on condition that the second user pays for the cancellation.

Further, in the first aspect, the first association means associates attached information indicating that each of the first NFT and the second NFT is associated with the first user on the first platform with the first user. ,
The third associating means may associate, with the second user, transaction information indicating that each of the first NFT and the second NFT has been associated with the second user on the second platform.

Further, in the first aspect, in the first platform, a first purchase price is set for each of the first NFT and the second NFT for associating the first NFT and the second NFT with the first user. , the first purchase consideration is paid to a purchase source different from the first user and the second user;
The first association means, on the first platform, on the condition that the first purchase consideration for each of the first NFT and the second NFT has been paid to the purchase source, the first NFT and the second NFT associate with the first user;
The second association means, on the second platform, on the condition that the second purchase consideration set between the first user and the second user is paid, the first NFT and the second NFT respectively can be disassociated from the first user and associated with the second user.

In the first aspect, the second association means pays the purchaser a collection charge collected by the purchaser from the first purchase price, Each of the first NFT and the second NFT can be disassociated from the first user and associated with the second user on the condition that one purchase consideration is paid to the first user.

The second aspect is
A first non-fungible token (first NFT) defining a first value medium and a second non-fungible token (second NFT) defining a second value medium are respectively associated with a first user. an association unit;
a first reception unit that receives a request from the first user to associate the first NFT and the second NFT;
A second associating unit that associates the first NFT and the second NFT in response to the request;
a first changing unit that changes the state of the first value medium based on the second value medium defined by the second NFT;
A third association unit that releases the association with the first user and associates the first NFT and the second NFT with a second user;
a second reception unit that receives a request from the second user to release the association between the first NFT and the second NFT;
A release unit that releases the association between the first NFT and the second NFT in response to the request;
a second changing unit that changes the state of the first value medium in response to the cancellation;
It is a server device.

The third aspect is
A first non-fungible token (first NFT) defining a first value medium and a second non-fungible token (second NFT) defining a second value medium are respectively associated with a first user. an association unit;
a first reception unit that receives a request from the first user to associate the first NFT and the second NFT;
A second associating unit that associates the first NFT and the second NFT in response to the request;
a first changing unit that changes the state of the first value medium based on the second value medium defined by the second NFT;
A third association unit that releases the association with the first user and associates the first NFT and the second NFT with a second user;
a second reception unit that receives a request from the second user to release the association between the first NFT and the second NFT;
A release unit that releases the association between the first NFT and the second NFT in response to the request;
a second changing unit that changes the state of the first value medium in response to the cancellation;
computer system.

According to the present disclosure, a program, an information processing device, and a computer system that can improve interest in changing the state of NFT value media are provided.

1 is a block diagram showing the configuration of a platform system in this embodiment; FIG. It is a figure for explaining the outline of the platform system in this embodiment. It is a figure for explaining the outline of the platform system in this embodiment. It is a figure which shows an example of the data structure of the platform system in this embodiment. 4 is a sequence diagram showing a series of operations of the game system in this embodiment; FIG. 4 is a sequence diagram showing a series of operations of the game system in this embodiment; FIG. It is a figure for explaining the outline of the platform system in this embodiment.

A platform system 1 according to an embodiment of the present disclosure (hereinafter also referred to as "this embodiment") will be described with reference to the drawings.

<Description of platform system>
The platform system 1 is one aspect of a computer system, and is a system that provides a platform for issuing value media related to games and distributing them. A value medium related to a game is defined (represented) by digital data, and may be defined by, for example, a Non-Fungible Token (hereinafter also referred to as “NFT”). In this embodiment, an example will be described in which the value medium is the game medium, and the NFT defining the value medium is the NFT defining the game medium. However, the value medium according to the present invention and the NFT defining the value medium are not intended to be limited to these.

A digital trading card defined by NFT (hereinafter also simply referred to as "digital card" or "card") according to this embodiment, that is, a digital trading card converted to NFT is also referred to as "NFT trading card". In addition, hereinafter, the NFT that defines the game content is also referred to as “game content NFT” or simply “NFT”.

A “game medium” is an element related to a game. Game media include, for example, digital cards, names of characters used as player characters, items (weapons, armor, tools) used by the player characters in the virtual game space, and the like.

An image associated with a game medium (value medium), such as when the game medium is a digital card, is also called a "medium image". A media image may be displayed as part of a digital card, for example. Also, the medium image includes, for example, a game image showing at least a part of the game progressed by the player's operation, and a real information image showing a real event in which the game was played.

In the platform system 1, as primary distribution, a company that operates the platform system 1, a game operating company, or a retailer can sell NFTs such as NFT trading cards online. Hereinafter, the environment (for example, operating environment such as hardware and software) for realizing primary distribution in the platform system 1 is also referred to as "first platform". In addition, in the platform system 1, as secondary distribution, the sold NFTs can be bought and sold in transactions between users. Hereinafter, the environment for realizing secondary distribution in the platform system 1 will also be referred to as a "second platform".

In the platform system 1, the user can combine other game media and change the state of the combined game media. Also, in the platform system 1, the user can disassemble a plurality of combined game media. Hereinafter, changing the state of game media by combining or disassembling a plurality of game media is also referred to as “customization”.

The state of the game medium is, for example, the appearance of the game medium (image of the game medium), parameters, sound, or the like. In the platform system 1, by combining a plurality of game media, it is possible to change the image of the game media and output sound from the game media.

The game according to the present embodiment is, for example, a competitive game progressed by operations of a plurality of players, and is so-called e-sports. However, the game according to the present embodiment is not intended to be limited to this.

As shown in FIG. 1, the platform system 1 is composed of a server device 2 and a plurality of user devices 5 . In the platform system 1, a server device 2 and a plurality of user devices 5 are connected via a communication network 6 so as to be able to communicate with each other.

The server device 2 is an information processing device used by an operator who operates the platform system 1 (hereinafter also referred to as "system operator"). The server device 2 realizes an EC server for selling NFTs to users and a function of managing NFT transactions between users by executing a predetermined program.

The user device 5 is an information processing device used by a user. The user device 5 may be a general-purpose terminal device such as a smart phone or laptop, or may be a device dedicated to the platform system 1 . The user device 5 provides the user with a UI for trading value media by executing a predetermined program. The predetermined program may be, for example, an application program dedicated to the platform system 1 (hereinafter also referred to as a "trading card application"), or a web browser commonly provided in the information processing apparatus. The user device 5 receives (more specifically, downloads and installs) a trading card application from the server device 2 or an application store via the communication network 6, for example. The trading card app may have a wallet function for storing and managing NFTs owned by users, for example.

In the platform system 1, account information including user identification information and a password is assigned to each user for user account authentication. This account information is transmitted from the user device 5 to the server device 2 at the time of login from the trading card application or web browser, and the server device 2 executes account authentication processing. After account authentication, mutual communication between the server device 2 and the user device 5 becomes possible. After logging in, when the user device 5 receives data necessary for NFT trading card transactions from the server device 2, the user device 5 outputs images and sounds of the NFT trading cards to the display and the speaker based on the user's operation.

Here, with reference to FIG. 2, an example of changing the state of game media in the platform system 1 will be described.

As shown in FIG. 2, in the platform system 1, a user can use game media such as a card C1 (denoted as "card NFT (body)" in FIG. 2) and card parts P that constitute an NFT trading card to operate a game. It can be purchased at the official shop operated by the company. This official shop is one of the online shop services realized by the first platform.

In the first platform, for each of the first NFT that defines the card C1 and the second NFT that defines the card part P, consideration for associating the first NFT and the second NFT with the user (hereinafter also referred to as "first purchase consideration") ) is set. The second NFT is a different type of NFT from the first NFT, and may be usable in association with the first NFT, for example. The first purchase consideration is the consideration paid by the user, who is a consumer, to purchase the game content from the game operating company or the like at the official shop, that is, the consideration for the BtoC transaction. Also, the first purchase price is paid to a purchaser (seller) such as a system operator, a game operator, or a retailer, who is different from the first user and the second user.

Specifically, on the first platform, the user selects the game content displayed on the screen of the website (EC site) provided by the server device 2 or the official shop of the trading card app, which the user wishes to purchase. Select and instruct purchase (hereinafter also referred to as "purchase instruction"), and associate (give) the purchased game content to the user according to this purchase instruction. Further, when the user purchases the game media at the official shop, the user pays the first purchase price to the game management company or the like that sells the game media at the official shop.

The card C1 is the body and body of the NFT trading card. The card C1 can constitute an NFT trading card by itself. The data defining card C1 is the NFT. That is, the card C1 is an NFT game medium. The card C1 is one aspect of the first game content, and the NFT of the card C1 is one aspect of the first NFT that defines the first game content.

The card parts P are parts that constitute the NFT trading card. The data defining card part P is also NFT. That is, the card parts P are also NFT game media. The card parts P are, for example, a frame P1 (indicated as “card frame” in FIG. 2) that decorates the frame of the NFT trading card, and a signature part P2 (in FIG. 2, "player signature"), seal parts P3 (represented as "sticker" in FIG. 2), etc. that indicate the seal of the team to which the professional e-sports player belongs, the seal of the game character, etc. . The signature part P2 and the seal part P3 can be freely arranged at various locations on the image of the NFT trading card. The card part P is, in other words, a game medium that can customize the card C1. The card part P is one aspect of the second game content, and the NFT of the card part P is one aspect of the second NFT that defines the second game content.

In this example, it is assumed that the user has purchased the first NFT of the card C1, the second NFT of the frame P1, and the second NFT of the signature part P2.

In the platform system 1, the user can associate the first NFT of the purchased card C1 with the second NFT of the frame P1 and the second NFT of the signature part P2 that are also purchased. By associating in this way, the user can decorate (so-called decorate) the card C1 with the frame P1 and the signature part P2. In other words, the user can combine the frame P1 and the signature part P2 with the card C1.

Specifically, first, the user requests the server device 2 to associate the second NFT of the frame P1 with the first NFT of the card C1. The server device 2 associates the second NFT of the frame P1 with the first NFT of the card C1 in response to this association request. The server device 2 changes the appearance, which is one of the states of the card C1, based on the frame P1 in which the NFTs are associated with each other in this manner. That is, the server device 2 changes the image of the card C1 to an image bordered by the frame P1 based on the frame P1. Next, the user makes a request to associate the second NFT of the signature part P2 with the first NFT of the card C1. The server device 2 associates the first NFT of the card C1 with the first NFT of the signature part P2 in response to this association request. The server device 2 further changes the appearance of the card C1 based on the signature parts P2 in which the NFTs are associated with each other in this way. The card C1 whose appearance has been changed based on the frame P1 and the signature image P1 is referred to as a customized card C1'. The server device 2 generates an image of the customized card C1' in which the card C1 is decorated with the frame P1 and the signature parts P2, and causes the user device 5 to display the image of the customized card C1'.

In the platform system 1, the user can further change the appearance decorated with the frame P1 and the signature parts P2 in the customization card C1'. For example, the user can remove the decoration of the signature part P2 from the customized card C1'. Specifically, the user requests the server device 2 to release the association between the first NFT of the card C1 and the second NFT of the signature part P2 (hereinafter also referred to as a "release request"). The server device 2 cancels the association between the first NFT of the card C1 and the second NFT of the signature part P2 in response to this cancellation request. The server device 2 changes the appearance of the customization card C1' in response to this cancellation. That is, in response to this cancellation, the server device 2 causes the user device 5 to display the image of the customized card C1'' with the signature part P2 removed from the image of the customized card C1'. The second NFT of the removed (released) signature part P2 can be associated again with the first NFT of the card C1, or can be associated with the first NFT of another card body.

According to the above configuration, the platform system 1 allows the user to freely change the state of the card body of the NFT trading card based on the frame, signature parts, etc. by associating or dissociating the NFT. Since the value of an NFT trading card may change depending on its state, when changing the state of the NFT trading card, the user will find it more interesting to use originality and ingenuity to increase the value and search for popular designs. be able to. Therefore, the platform system 1 can improve interest in changing the state of NFT game media.

Here, an example of transactions between users in the platform system 1 will be described with reference to FIG.

As shown in FIG. 3, in the platform system 1, as secondary distribution, the first user can sell (resell) a card purchased from an official shop or a customized card to the second user. In this example, the system operator mediates transactions between users. The second platform of the platform system 1 realizes an NFT marketplace that enables electronic commerce of such NFTs between users.

On the second platform, the consideration paid by the second user from the first user to the second user to purchase the game content defined by NFT (hereinafter also referred to as "second purchase consideration") is between the first user and the second user is set by The second purchase consideration is the consideration paid for purchasing the NFT between users (consumers), that is, the consideration for CtoC transactions. According to such a configuration, a central administrator such as a system operator or a game operator does not unilaterally set the value of NFT, but can be set by consensus between the first user and the second user. Therefore, it is possible to set the value more in line with the user who conducts the transaction.

In such transactions between users, the platform system 1 can collect fees such as transaction brokerage fees and copyright fees for sold cards. Hereinafter, these fees collected in transactions between users on the platform system 1 are also collectively referred to as "collected fees". Note that the server device 2 may set the collection fee based on, for example, the sales price of a transaction object such as an NFT trading card. For example, the server device 2 may set and collect the amount calculated by multiplying the sales price of the NFT trading card by a predetermined multiplication rate (for example, 30%) as the amount of the collected fee.

The mode of selling the NFT trading card from the first user to the second user is, for example, (1) selling the card itself (indicated as "elementary NFT" in FIG. 3) as it is, (2) selling a customized card, Various modes are possible, such as (3) selling a plurality of cards together (selling in bulk), (4) selling a set of cards using images of the top 4 matches at e-sports competitions. be.

In the platform system 1, as secondary distribution, the first user is restricted from selling the second NFT of the card part P to the second user as a single unit (transferring the second NFT to the second user). For example, the platform system 1 may prohibit the sale of the second NFT of the card part P itself, or may set an upper limit on the number of sales (number of transfers) of the second NFT of the card part P. The upper limit of the number of sales of the second NFT of the card part P may differ for each type of card part P, for example. Further, for example, the upper limit of the number of sales of the seal part P3 (for example, up to 3 times) may be set smaller than the upper limit of the number of sales of the frame part P1 (for example, up to 100 times).

For example, as in the above example, when setting the collection fee to an amount obtained by multiplying the selling price of the transaction object by a predetermined multiplication rate, if the card part P alone is included in the transaction object, the card itself and the customized card can be compared. Therefore, the collection fee may be low. According to the above configuration, it is possible to limit the inclusion of the single card part P in transactions, thereby preventing the collection fee from becoming low.

<Structure of server device>
Returning to FIG. 1, the description continues. The hardware configuration and functional configuration of the server device 2 will be described below.

The server device 2 has a network interface 21 , a storage section 22 and a control section 23 . Network interface 21 and storage unit 22 are electrically connected to control unit 23 via bus 29 .

The network interface 21 is communicably connected to each user device 5 via a communication network 6 such as the Internet and LAN.

The storage unit 22 is a device that stores programs and data, such as a main storage device, an auxiliary storage device, or an external storage device. The storage unit 22 includes, for example, an HDD (Hard Disk Drive), a RAM (Random Access Memory), a ROM (Read Only Memory), and an SSD (Solid State Drive). The storage unit 22 stores various programs including part of the programs according to the present embodiment, as well as various data such as a user DB 221 and a token DB 222 .

A program according to this embodiment can be stored in a storage medium. The storage medium storing the program may be a non-transitory computer readable medium. The non-temporary storage medium is not particularly limited, but may be a storage medium such as a USB memory or CD-ROM, for example.

The user DB 221 contains card identification information (card number and serial number) that identifies the NFT owned by the user, the balance of the electronic value that can be used in the platform system 1, for each user identification information of the user who plays the game. , attribute information indicating user attributes, etc. are stored in association with each other. Henceforth, these information are also generically called "user information." Here, “electronic value” may be, for example, digital currency (electronic money or crypto assets (virtual currency)).

In the token DB 222, for each NFT number and serial number of NFTs distributed in the platform system 1, parameters, date and time of issue (date and time of issue), seller (issuer), total number of issues, current owner, transaction history, etc. are associated and stored. Here, "NFT number" is a number indicating the type of NFT. A “serial number” is a unique number assigned to each NFT issued in the same type of NFT. Further, in the case of an unsold NFT, the token DB 222 may store unique digital data itself associated with each serial number that defines the NFT, that is, the game content. The NFT may include at least one of an electronic certificate proving its authenticity and an electronic certificate proving its current owner. Then, when sold to the user, this NFT may be moved (transmitted) to the user device 5 and deleted from the trading card DB 222 . Henceforth, these information are also generically called "NFT information."

The “parameters” are, for example, strength, attack power, defense power, physical strength (HP), intelligence, skill level, skill type, rank, or rarity of game media such as NFT trading cards.

The control unit 23 is composed of a microcomputer including a CPU and a semiconductor memory, and is a processing unit ( processor, etc.). The control unit 23 can realize various functions in the server device 2 by executing the programs stored in the storage unit 22 .

The control unit 23 functions as an information processing unit 231, a collation unit 232, a reception unit 233, an association unit 234, a change unit 235, and a cancellation unit 236 by executing various programs.

―Information processing means―
The information processing means 231 transmits and receives various data to and from each user device 5 . The main data received by the information processing means 231 include requests for display information, various requests according to user operations (for example, requests for designation of digital cards, requests for drawing lots for gacha, requests for payment when purchasing a digital card, etc.). ), user information, NFT information (including the NFT itself), and the like. Main data transmitted by the information processing means 231 include a trading card application, NFT information, and the like. Further, the information processing means 231 may generate display information for displaying NFT trading cards or the like on the user device 5 via a website or a trading card application, for example.

- Verification means -
The verification unit 232 uses the user identification information received from the user device 5 to authenticate the user account.

- Reception means -
The accepting means 233 accepts various selections, instructions, requests, or the like from the user. For example, when a first user purchases a first NFT or a second NFT sold at an official shop, the reception unit 233 receives a purchase instruction of the first NFT or the second NFT from the first user.

-First Receiving Means-
The accepting means 233 may include a first accepting means 2331 . The first accepting means 2331 accepts a request to associate the first NFT and the second NFT from the first user. The first accepting unit 2331 accepts, for example, a request to associate the card C1 and the card part P from the first user. In other words, the first accepting means 2331 accepts a request from the first user to combine the card parts P with the card C1.

-Second Receiving Means-
The accepting means 233 may include a second accepting means 2332 . The second accepting unit 2332 accepts a request from the second user to release the association between the first NFT and the second NFT. In other words, the second accepting unit 2332 accepts a request to disassemble the combined card C1 and card part P from the second user.

-Associating Means-
The associating means 234 associates the user with the NFT or between the NFTs in accordance with the request from the user received by the receiving means 233 .

-First association means-
The associating means 234 comprises a first associating means 2341 . The first associating means 2341 associates the first NFT defining the first game content and the second NFT defining the second game content with the first user. In other words, the first associating means 2341 gives the first NFT and the second NFT to the first user. The first associating means 2341, for example, associates the first NFT defining the card C1 and the second NFT defining the card part P with the first user in response to the purchase instruction from the first user. In addition, at the time of this association, the first association means 2341 uses the payment method specified by the first user (for example, withdrawal from a bank account, payment by electronic value, etc.) as a consideration for this association (first purchase Consideration) may be processed for settlement of payment.

The first association means 2341, for example, on the first platform, generates or acquires information indicating that each of the first NFT and the second NFT is associated with the first user (hereinafter also referred to as "grant information"), and this grant Information may be associated with the first user. Specifically, the first associating means 2341 may associate the user information of the first user and the additional information and store them in the storage unit 22 .

The first association means 2341 associates the first NFT and the second NFT with the first user, for example, on the first platform, on the condition that the first purchase consideration for each of the first NFT and the second NFT has been paid to the purchase source. may According to such a configuration, it is possible to require a consideration when a user purchases an NFT in primary distribution.

-Second association means-
The associating means 234 comprises a second associating means 2342 . The second associating means 2342 associates the first NFT and the second NFT according to the request from the user received by the first receiving means 2331 . The second association means 2342 generates information indicating that the first NFT and the second NFT are associated (hereinafter also referred to as “customization information”), and generates the first game medium defined by the first NFT and the second game medium defined by the second NFT. The game content is stored in the storage unit 22 in association with at least one of the two game media.

The second associating means 2342, for example, allows at least one of associating the first NFT and the second NFT, and releasing the association between the first NFT and the second NFT, without requiring payment of consideration. may The second associating means 2342, for example, associates the first NFT of the card C1 with the second NFT of the card part P, in other words, requires payment for combining the card part P with the card C1. may be allowed without On the other hand, the second associating means 2342, for example, cancels the association between the first NFT of the card C1 and the second NFT of the card part P, in other words, disassembles the card C1 and the card part P, and pays for it. May be allowed without need.

According to such a configuration, the user can associate the first NFT with the second NFT and cancel the association without worrying about payment. For example, the user can freely customize the NFT trading card by combining the card C1 with the card parts P or by disassembling the combined card C1 and the card parts P without paying a consideration. Therefore, it is possible to provide a user-friendly platform system that facilitates association between the first NFT and the second NFT and release of this association.

The second association means 2342, for example, on the second platform, on the condition that the second purchase consideration set between the first user and the second user is paid, for each of the first NFT and the second NFT, the second It may be disassociated with one user and associated with a second user. According to such a configuration, in the secondary distribution, it is possible to require a consideration for trading NFTs between users.

The second association means 2342, for example, pays the purchaser the collection charge collected by the purchaser from the first purchase consideration, and pays the first purchase consideration minus the collection charge to the first user. As a condition, each of the first NFT and the second NFT may be disassociated with the first user and associated with the second user. According to such a configuration, since collection fees such as brokerage fees and copyright fees are deducted from the first purchase price, the fees can be reliably collected in transactions between users.

-Third association means-
The associating means 234 comprises a third associating means 2343 . The third associating means 2343 releases the association with the first user and associates the first NFT and the second NFT associated with the first user with the second user. In other words, the third associating means 2343 transfers each of the first NFT and the second NFT from the first user to the second user. The third associating means 2343 may perform processing for payment and settlement of consideration for the cancellation and association (transfer) by the settlement method specified by the second user at the time of the cancellation and association.

For example, when the first NFT of the card C1 and the second NFT of the frame part P1 owned by the first user are sold from the first user to the second user, the third association means 2343 to associate these NFTs with the second user. In other words, the third associating means 2343 transfers each of the first NFT of card C1 and the second NFT of frame part P1 from the first user to the second user.

The third associating means 2343 may collectively associate the first NFT and the second NFT with the second user, for example, on condition that the first NFT and the second NFT are associated. The third associating means 2343 collectively associates the first NFT of the card C1 and the second NFT of the frame part P1 owned by the first user, for example, with the condition that these NFTs are associated with the customized card C1. '' may be associated with the second user.

For example, if the first NFT and the second NFT are not associated, the third association means 2343 allows the first NFT to be associated with the second user alone, while the second NFT is associated alone with the second user. may be restricted. The third associating means 2343, for example, when the first NFT of the card C1 owned by the first user and the second NFT of the frame part P1 are not associated, in other words, when these NFTs are individually separated , the association (transfer) of the first NFT of the card C1 alone to the second user may be allowed, and the association of the second NFT of the card part P alone may be restricted.

According to the above configuration, the third associating means 2343, compared to the first NFT of the card C1, which can constitute an NFT trading card by itself, for the card part P that cannot constitute an NFT trading card by itself certain trading limits may apply.

For example, as in the above example, when setting the collection fee to an amount obtained by multiplying the selling price of the transaction object by a predetermined multiplication rate, if the card part P alone is included in the transaction object, the card itself and the customized card can be compared. Therefore, the collection fee may be low. According to the above configuration, the third associating means 2343 can restrict the single card part P to be included in the transaction object, so it is possible to prevent the collection fee from becoming low.

For example, the third association means 2343 generates or acquires information (hereinafter also referred to as "transaction information") indicating that each of the first NFT and the second NFT is associated with the second user on the second platform, and the second Associate with a user. The transaction information is, in other words, information indicating the history of transactions between users for each NFT. Specifically, the third associating means 2343 may associate the user information of the second user and the transaction information and store them in the storage unit 22 and/or the user device 5 . According to such a configuration, the transaction information of this NFT can be retrieved from the second user who is the latest owner of the NFT.

<Additional Information, Customized Information and Transaction Information>
Here, with reference to FIG. 4, an example of grant information, customization information, and transaction information will be described. In this example, the NFT information includes grant information, customization and transaction information. The NFT information uniquely identifies each NFT using the NFT number and serial number as a composite key.

(1) As shown in the portion surrounded by the two-dot chain line frame in FIG. ”) is associated with the first user, the given information indicating this association (tag of “#given” and given date and time “2021/3/1”) may be associated with the first user.

(2) As shown in the portion surrounded by the dashed frame in FIG. 4, the second associating means 2342, for example, connects the first NFT of the card C1 and the second NFT of the frame P1 (NFT number "p-1" and serial number “001”), the customization information indicating this association (the “#union” tag and the unification date and time “2021/3/3”) may be associated with the first user. Further, for example, when canceling the association between the first NFT and the second NFT, the canceling means 236 sends the customization information indicating this cancellation (tag of "# disassembly" and disassembly date and time "2021/4/5") to the first user may be associated with

(3) As shown in the portion surrounded by the dashed-dotted line frame in FIG. serial number "001") are collectively disassociated from the first user, and the transaction information ("# transfer" tag and transfer date and time) indicating that they are associated with the second user are associated with the second user. may

- Means of change -
Returning to FIG. 1, the description continues. The changing means 235 changes the state of the game media. In other words, the changing means 235 customizes the game content (combines or disassembles other game content) according to the user's operation.

- First change means -
The changing means 235 comprises a first changing means 2351 . The first changing means 2351 changes the state of the first game content based on the second game content defined by the second NFT associated with the first NFT. The first changing means 2351 changes the appearance of the card C1, for example, based on the signature part P2. In other words, the first changing unit 2351 causes the user device 5 to display the image of the card C1 on which the image of the signature part P2 is overlaid (pasted), like the customized card C1' in FIG.

-Second change means-
The changing means 235 comprises a second changing means 2352 . The second changer 2352 changes the state of the first game medium in response to release by the releaser 236, which will be described later. The second changing means 2352 changes the state of the card C1, for example, according to the release of the association between the first NFT of the card C1 and the second NFT of the card part P. In other words, the second changing means 2352 returns the card C1 to the state before the card parts P were combined.

According to the above configuration, the second changing means 2352 can change the state of the first game content in accordance with the release of the association between the first NFT and the second NFT by the second user at the transfer destination. For example, the signature part P2 combined with the card C1 can be disassembled according to the release of the association between the first NFT defining the card C1 and the second NFT defining the signature part P2. In this way, the second changing unit 2352 can change the state of the card body of the NFT trading card by canceling the NFT association. The user can leave the card part P of the second NFT purchased from another user attached to the card C1 of the first NFT or remove it from the card C1 of the first NFT. It can also be attached to the body. Therefore, the second changing means 2352 can improve interest in changing the state of the NFT game content.

-Release means-
The canceling means 236 cancels the association between the first NFT and the second NFT in response to the cancellation request received by the second receiving means 2332 . In other words, the releasing means 236 releases the association between the first NFT of the card C1 and the second NFT of the card part P, thereby disassembling the combined card C1 and card part P. The releasing means 236 can disassemble the card C1 and the card parts P in this way.

<Operation flow of the platform system>
With reference to FIGS. 5 and 6, an example of transaction processing in primary distribution and secondary distribution in the platform system 1 and an example of processing flow and interaction of customization of the traded game contents will be described.

FIG. 5 is a sequence diagram showing the flow and interactions of processing from when the first user purchases the first NFT and second NFT as primary distribution to when the state of the first game content defined by the first NFT is changed.

As shown in FIG. 5, first, the first user device 5a receives, as a purchase instruction, a first NFT that defines a first game content and a second NFT that defines a second game content from a first user. A request to associate with one user is accepted (step st11). Next, the first user device 5a transmits this request to the server device 2 (step st12).

Next, the reception unit 233 of the server device 2 receives a request to associate the first NFT and the second NFT with the first user (step st13). Next, the first associating means 2341 associates the first NFT and the second NFT with the first user (step st14).

Next, the first association unit 2341 of the server device 2 transmits the first NFT and the second NFT associated with the first user to the first user device 5a (step st15). When the first user device 5a receives the first NFT and the second NFT, the first user device 5a outputs the image and sound of the game media respectively defined (step st16).

Next, the first user device 5a receives a request for associating the first NFT and the second NFT from the first user (step st17). Next, the first user device 5a transmits this request to the server device 2 (step st18).

Next, the first accepting means 2331 of the server device 2 accepts a request to associate the first NFT and the second NFT (step st19). Next, the second associating means 2342 associates the first NFT and the second NFT (step st20).

Next, the first changing means 2351 changes the state of the first game content based on the second game content defined by the second NFT associated with the first NFT. In this example, the first change unit 2351 changes the parameters of the first game content based on the second game content. Specifically, the first change means 2351 generates change information for reflecting the change of the parameter of the first game medium as one of the processes of changing the state of the first game medium. (Step st21). Next, the first changing means 2351 transmits the generated change information to the first user device 5a as one of the processes for changing the state of the first game medium (step st21). The first user device 5a reflects the received change information in the first NFT to change the parameters of the first game content, and outputs the first game content with the changed parameters (step st22).

FIG. 6 shows the flow and interaction of processing from when the second user purchases the first NFT and second NFT sold by the first user as secondary distribution to when the state of the first game content defined by the first NFT is changed. 4 is a sequence diagram showing actions; FIG.

As shown in FIG. 6, the first user device 5a receives a request from the first user to list the associated first NFT and second NFT on the NFT marketplace (hereinafter referred to as "listing request"). ) is accepted (step st31). In this example, it is assumed that the exhibition request includes the first NFT and the second NFT to be exhibited. Next, the first user device 5a transmits this exhibition request to the server device 2 (step st32).

Next, the accepting means 233 of the server device 2 accepts an exhibition request for the first NFT and the second NFT (step st33). The information processing means 231 of the server device 2 generates display information for exhibiting the first NFT and the second NFT in the NFT marketplace based on this exhibition request (step st34). The information processing means 231 transmits the generated display information to each of the first user device 5a and the second user device 5b (step st35). Based on the received display information, each of the first user device 5a and the second user device 5b displays the first NFT and the second NFT for sale via the website or the trading card application (step st36).

Next, the second user device 5b receives a request from the second user to associate the displayed first NFT and second NFT with the second user in order to purchase the NFT from the first user (step st37). The second user device 5b then transmits this request to the server device 2 (step st38).

Next, the reception unit 233 of the server device 2 receives a request from the second user to associate the first NFT and the second NFT with the second user (step st39). The third associating means 2343 releases the association between the first NFT and the second NFT and the first user. In response to this cancellation, the third associating means 2343 requests the first user device 5a to move the first NFT and the second NFT in order to transfer the first NFT and the second NFT to the second user (step st41 ). The first user device 5a transmits the first NFT and the second NFT to the server device 2 in response to this request (step st42). The server device 2 transmits the transmitted first NFT and second NFT to the second user device 5b (step st43). As another example of transferring the first NFT and the second NFT, the server device 2 causes the first NFT and the second NFT stored in the first user device 5a to be deleted (or invalidated), the first NFT and the second NFT may be newly generated and the generated first NFT and second NFT may be transmitted to the second user device 5b. The server device 2 associates the first NFT and the second NFT with the second user (step st44).

Next, the second user device 5b receives a request from the second user to release the association between the first NFT and the second NFT (step st45). The second user device 5b then transmits this request to the server device 2 (step st46).

Next, the second receiving means 2332 of the server device 2 receives a request to release the association between the first NFT and the second NFT from the second user (step st47). The releasing means 236 releases the association between the first NFT and the second NFT (step st48).

Next, the second changing means 2352 changes the state of the first game medium according to the release. Specifically, the second changing means 2352 further changes the parameter of the first game medium as one of the processes for changing the state of the first game medium, in other words, the first game medium by the first changing means 2351 Generate change information to return parameter changes in (Step st49). Next, the second changing means 2352 transmits the generated change information to the second user device 5b as one of the processes for changing the state of the first game medium (step st50). The second user device 5b reflects the received change information on the first NFT, further changes the parameters of the first game content (restores them to the values before the change by the first change means 2351), and changes the parameters of the first game content. A game medium is output (step st51).

To summarize the above, the control unit 23 (computer) of the server device 2 is configured to control the first non-fungible token (first NFT) defining the first game content and the second non-fungible token (first NFT) defining the second game content. A first association means 2341 for respectively associating the token (second NFT) with the first user, a first reception means 2331 for accepting a request to associate the first NFT and the second NFT from the first user, and the first NFT in response to the request and a second NFT, a first changing means 2351 for changing the state of the first game content based on the second game content defined by the second NFT, the first NFT and the second NFT, the first user A third association means 2343 for canceling the association with the second user, a second reception means 2332 for accepting a request to cancel the association between the first NFT and the second NFT from the second user, and in response to the request, the second It functions as canceling means 236 for canceling the association between the 1NFT and the second NFT, and second changing means 2352 for changing the state of the first game medium in accordance with the cancellation.

<effect>
According to the present embodiment, the user can change the state of the card body of the NFT trading card based on the frame, signature parts, etc. by associating or releasing the NFT. Since the value of an NFT trading card may change depending on its state, when changing the state of the NFT trading card, the user will find it more interesting to use originality and ingenuity to increase the value and search for popular designs. be able to. Therefore, it is possible to improve the interest in changing the state of the NFT game content.

[Variation]
Although the present invention has been described based on the above embodiments, the present invention is not limited to the above embodiments. The following cases are also included in the present invention.

[First Modification]
In the above embodiment, an example in which the game content defined by the NFT is a digital card has been described, but the game content defined by the NFT according to the present invention is not limited to this. Game media defined by NFT may be, for example, items and characters used in the game. Also, value media defined by NFT are not limited to game media. In other words, the value medium defined by NFT may be a digital card or the like that is not used in a specific game but is simply for the purpose of collection or transactions between users. In this case, a medium image is associated with the value medium defined by NFT, but game parameters and the like for use in the game are not associated.

[Second Modification]
In the above-described embodiment, in the secondary distribution of the platform system 1, an example was described in which selling the second NFT of the card part P2 alone (transferring between users) is restricted, but the NFT according to the present invention The sales mode is not limited to this. For example, in secondary distribution, it may be allowed to sell the second NFT that defines the second game content alone. Further, for example, in the case where the amount to be collected is set as the amount obtained by multiplying the sales price of the transaction object by a predetermined multiplication rate as in the example shown in the above embodiment, it is possible to sell the second NFT of the card part P alone. If allowed, the collection fee may be low. On the other hand, in the platform system 1, the NFT trading card customization fee may be collected to cover this.

Here, with reference to FIG. 7, an example of a method of collecting consideration for customization of the NFT trading card when allowing the second NFT to be sold alone in secondary distribution will be described.

As shown in FIG. 7, in the platform system 1, for example, when a card body is customized with card parts, the fee may be collected. For example, the following methods are conceivable as a method of collecting consideration for customization.
(A) Selling the game media necessary for customization (denoted as “customization item” in FIG. 7), and purchasing and owning the game media (being associated with the user). Users can customize NFT trading cards.
(a) Each time customization is performed, the user is requested to pay for the customization, and the payment for the customization is settled. The consideration for customization is, for example, the consideration for combining the card part P with the card C1 (denoted as "combination price" in FIG. 7), or the consideration for disassembling the combined card C1 and the card part P (in FIG. 7, described as “disassembly consideration”), etc.

The second associating means 2342 may allow at least one of, for example, associating the first NFT and the second NFT, and disassociating the first NFT and the second NFT, subject to payment of consideration. . Specifically, the second associating means 2342 permits associating the first NFT of the card C1 with the second NFT of the frame P1 and combining the frame P1 with the card C1, for example, on the condition that the association fee is paid. may

According to the above configuration, it is possible to collect fees for associating the first NFT and the second NFT and canceling the association. For example, it is conceivable that it is necessary to collect funds in order to operate the platform system 1 and pay the professional e-sports players posted on the NFT Trading Card. When collecting funds in this way, collection of consideration for customization of such NFT trading cards can be used as a source of funds for such funds. In particular, if allowing the second NFT to be sold separately would result in a lower collection fee, it can be used as an alternative source of funding.

The second associating means 2342 may associate the first NFT and the second NFT, for example, on the condition that the second user pays for the association. According to such a configuration, the association is premised on the payment of the consideration for associating the first NFT and the second NFT, so the association consideration can be reliably collected.

The third association means 2343, for example, regardless of whether the first NFT and the second NFT are associated, allows the first NFT to be associated with the second user alone, and allows the second NFT to be associated with the second user alone. may be allowed to associate with The third association means 2343 associates the second NFT of the signature part P2 alone with the first user even if the first NFT of the card C1 and the second NFT of the signature part P2 are not associated (even if they are not combined). may be released to allow association with the second user. In other words, the third association means 2343 can transfer (sell→purchase) the second NFT from the first user to the second user.

According to the above configuration, the third associating means 2343 can independently associate each of the first NFT and the second NFT with the second user regardless of whether the first NFT and the second NFT are associated. Therefore, since the user can transfer the second NFT alone to the second user, the NFT related to the NFT trading card can be distributed more freely in the secondary distribution. Therefore, the third associating means 2343 can promote distribution of NFTs related to NFT trading cards in secondary distribution.

The third association means 2343, for example, on the condition that the second user pays for the purchase of the first NFT and / or the second NFT (hereinafter also referred to as "purchase consideration"), the first NFT and / or the second NFT, the third It may be disassociated with one user and associated with a second user. For example, when the third association means 2343 detects that the payment for the purchase price by the second user has been completed, the first NFT and / or the second NFT is released from the association with the first user in response to this detection. and associated with the second user.

The canceling means 236 may cancel the association between the first NFT and the second NFT, for example, on condition that the second user pays for the cancellation. For example, when detecting that the second user has completed payment for the cancellation consideration, the canceling means 236 may cancel the association between the first NFT and the second NFT in response to this detection. According to such a configuration, since the cancellation is premised on payment of the compensation for canceling the association between the first NFT and the second NFT, it is possible to reliably collect the cancellation compensation.

[Third Modification]
In the above embodiment, an example in which NFTs are individually associated with users has been described, but the form of association of NFTs with users according to the present invention is not limited to this. For example, multiple NFT trading cards may be combined to generate a set of NFTs (so-called set, pack, etc.), and each set of generated NFTs may be given to the user.

The control unit 23 may function as combining means (not shown). The combining means generates a set of NFTs by combining the NFTs. A set of NFTs is, for example, a pack of the first NFT that defines the card C1, a set of the second NFT that defines the card part P, a set of the first NFT that defines the card C1 and the second NFT that defines the card part P, etc. is. For example, if there are a total of 10 games in the final league of the e-sports tournament as a pack of the final league and final round of the e-sports tournament, the combination means is the media image of each final round of the game played in each of these 10 games. may be generated by collecting ten cards C1 associated with .

[Fourth Modification]
In the above embodiment, the NFTs sold by the platform system 1 are displayed, and the user designates and purchases an NFT from among them. However, the NFT sales method according to this embodiment is not limited to this. do not have. The NFT sales method may be, for example, a lottery (so-called “gacha”) in which one or more NFTs are selected from a plurality of NFTs based on lottery conditions such as a lottery table. The NFT sales method may be, for example, a lottery (so-called “pack gacha”) in which a plurality of NFTs are selected.

The storage unit 22 may store, for example, a lottery table (not shown) used by lottery means, which will be described later. The lottery table is used when a lottery means (described later) performs a lottery generally called gacha, and includes a plurality of information about NFTs to be selected. In the lottery table, information (for example, names, parameters, etc.) about NFTs and selection ratios by lottery (so-called winning probability and provision ratio) are associated.

“Gacha” is a method in which the server device 2 selects an arbitrary NFT from a lottery table by lottery based on a predetermined selection ratio. Any NFTs selected are granted to the user. “The game media selected by the gacha is given to the user/owned by the user” means that “the game media defined by the NFT selected in the lottery process is associated with/associated with the identification information indicating the user.” is synonymous with

The first association means 2341 may, for example, execute a lottery by a lottery means and associate the NFT with the user according to the result of the lottery execution. The first association unit 2341 associates, for example, the NFT information of the NFT selected by the lottery unit and the identification information of the user who performed the operation that is the source of the lottery request in the token DB 222 . As a result, this user is given the NFT that was won as a result of this lottery (pulling the gacha).

-Lottery method-
The association means 234 may include, for example, lottery means (not shown). The lottery means executes a lottery according to a user's instruction to execute a lottery. The lottery means, for example, selects one or more NFTs by lottery based on the selection ratio of each NFT from a lottery table (not shown) stored in the storage unit 22 in response to a user's lottery instruction.

[Fifth Modification]
Although not shown in the above embodiment, distributed ledger technology (for example, blockchain technology) may be utilized in transactions between users of the second platform of the platform system 1 . For example, in the second platform, in order to distribute and manage transaction information on the user (edge) side, a plurality of user devices 5 including the first user device 5a and the second user device 5b are distributed and stored. good too. According to such a configuration, the transaction information indicating the transaction between users can be distributed to the user devices 5 and shared among the users, thereby preventing falsification of the transaction information. In addition, since transaction information is distributed and managed among users, for example, there is no need for an operator who operates a specific game to centrally manage it, and NFT trading cards can be used across various games that do not depend on a specific game operator. can do.

On the second platform, for example, the value of NFT, that is, the setting of consideration for transferring NFT between users, can be set only by users (in the above example, the first user and the second user) who make transactions to transfer NFT It may also be set based on the consensus building of a plurality of users who participate in the network of the platform system 1 .

[Other embodiments]
The various control means and processing procedures described in the above embodiments are examples, and are not intended to limit the scope of the present invention, its applications, or its uses. Various control means and processing procedures can be appropriately modified in design without changing the gist of the present invention.

The games can be action games, shooting games, role-playing games, simulation games, board games, puzzle games, etc., and can be applied to various types of games.

In the above embodiment, the server device 2 and the user devices 5 work together to function the program, but the present invention is not limited to this. All means of the program, that is, acceptance means, association means, change means, cancellation means, etc., are server device 2 alone, user device 5 alone, communication terminal alone separate from server device and user device 5, or combination of these may be provided in two devices connected to each other (for example, distributed processing in the server device 2 and the user device 5). Also, when the server device, the user device, and the communication terminal are made to function together, it is possible to appropriately change which means is made to function by which device.

Even when these other embodiments are employed, the effects of this embodiment are exhibited. Further, it is also possible to appropriately combine this embodiment with other embodiments, and other embodiments with each other.

1 platform system 2 server device 23 control unit 233 receiving means 2331 first receiving means 2332 second receiving means 234 relating means 2341 first relating means 2342 second relating means 2343 third relating means 235 changing means 2351 first changing means 2352 2 changing means 236 canceling means 5 user device

Claims (11)

the computer,
A first non-fungible token (first NFT) defining a first value medium and a second non-fungible token (second NFT) defining a second value medium are respectively associated with a first user. means of association,
a first receiving means for receiving a request from the first user to associate the first NFT and the second NFT;
second associating means for associating the first NFT and the second NFT in response to the request;
a first change means for changing the state of the first value medium based on the second value medium defined by the second NFT;
Third associating means for releasing the association with the first user and associating the first NFT and the second NFT with a second user;
second receiving means for receiving a request from the second user to cancel the association between the first NFT and the second NFT;
releasing means for releasing the association between the first NFT and the second NFT in response to the request;
functioning as second changing means for changing the state of the first value medium in response to the cancellation;
program. The third associating means is
On the condition that the first NFT and the second NFT are associated, the first NFT and the second NFT are collectively associated with the second user,
If the first NFT and the second NFT are not associated, allow the first NFT to be associated with the second user alone, while restricting the second NFT from being associated with the second user alone do,
A program according to claim 1. The second association means performs at least one of associating the first NFT and the second NFT, and releasing the association between the first NFT and the second NFT, without requiring payment of consideration. allow,
3. A program according to claim 1 or 2. The third associating means allows the first NFT to be associated with the second user alone regardless of whether the first NFT and the second NFT are associated, and the second NFT alone allowing to associate with said second user;
A program according to claim 1. The second association means allows at least one of associating the first NFT and the second NFT, and disassociating the first NFT and the second NFT, subject to payment of consideration.
5. A program according to claim 4. The third association means cancels the association with the first user and associates the first NFT and/or the second NFT with the second user on the condition that the second user pays for the purchase,
The second association means associates the first NFT and the second NFT on the condition that the second user pays for the association,
The release means releases the association between the first NFT and the second NFT on condition that the second user pays for the release.
6. A program according to claim 5. The first association means associates attached information indicating that each of the first NFT and the second NFT is associated with the first user on the first platform with the first user,
The third associating means associates transaction information indicating that each of the first NFT and the second NFT is associated with the second user on the second platform, with the second user;
A program according to claim 1. On the first platform, a first purchase price is set for each of the first NFT and the second NFT for associating the first NFT and the second NFT with the first user, and the first purchase price is is paid to a purchaser different from the first user and the second user;
The first association means, on the first platform, on the condition that the first purchase consideration for each of the first NFT and the second NFT has been paid to the purchase source, the first NFT and the second NFT associate with the first user;
The second association means, on the second platform, on the condition that the second purchase consideration set between the first user and the second user is paid, the first NFT and the second NFT respectively is disassociated from the first user and associated with the second user;
8. A program according to claim 7. The second association means pays the purchaser a collection charge collected by the purchaser from the first purchase consideration, and sends the first purchase consideration from which the collection charge has been deducted to the first user. disassociating with said first user and associating with said second user for each of said first NFT and said second NFT, provided that
9. A program according to claim 8. A first non-fungible token (first NFT) defining a first value medium and a second non-fungible token (second NFT) defining a second value medium are respectively associated with a first user. an association unit;
a first reception unit that receives a request from the first user to associate the first NFT and the second NFT;
A second associating unit that associates the first NFT and the second NFT in response to the request;
a first changing unit that changes the state of the first value medium based on the second value medium defined by the second NFT;
A third association unit that releases the association with the first user and associates the first NFT and the second NFT with a second user;
a second reception unit that receives a request from the second user to release the association between the first NFT and the second NFT;
A release unit that releases the association between the first NFT and the second NFT in response to the request;
a second changing unit that changes the state of the first value medium in response to the cancellation;
Information processing equipment. A first non-fungible token (first NFT) defining a first value medium and a second non-fungible token (second NFT) defining a second value medium are respectively associated with a first user. an association unit;
a first reception unit that receives a request from the first user to associate the first NFT and the second NFT;
A second associating unit that associates the first NFT and the second NFT in response to the request;
a first changing unit that changes the state of the first value medium based on the second value medium defined by the second NFT;
A third association unit that releases the association with the first user and associates the first NFT and the second NFT with a second user;
a second reception unit that receives a request from the second user to release the association between the first NFT and the second NFT;
A release unit that releases the association between the first NFT and the second NFT in response to the request;
a second changing unit that changes the state of the first value medium in response to the cancellation;
computer system.

Images