JP7058898B1 - Transaction support system, transaction support method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To issue an NFT associated with a content that can be changed. A transaction support system, a sales unit that sells the right to issue an NFT corresponding to a content, and a right storage unit that stores whether or not an NFT has been issued in association with information that identifies the content. It is characterized by including a change unit for making changes to the content for which the NFT has not been issued. [Selection diagram] Fig. 1

Description

The present invention relates to a transaction support system, a transaction support method and a program.

Patent Document 1 proposes an item trading system (see, for example, Patent Document 1).

Japanese Patent No. 6404435

It is assumed that the content associated with the NFT is fixed.

The present invention has been made in view of such a background, and an object of the present invention is to provide a technique capable of issuing an NFT associated with content that can be changed.

The main invention of the present invention for solving the above-mentioned problems is a transaction support system, in which a sales department that sells the right to issue an NFT corresponding to a content and an information that identifies the content are associated with the NFT. It is characterized by including a right storage unit for storing whether or not the NFT has been issued, and a change unit for making changes to the content for which the NFT has not been issued.

Other problems disclosed in the present application and solutions thereof will be clarified by the columns and drawings of the embodiments of the invention.

According to the present invention, it is possible to issue an NFT associated with content that can be changed.

It is a figure which shows the whole structure example of the transaction support system which concerns on one Embodiment of this invention. It is a figure which shows the hardware configuration example of management server 2. It is a figure which shows the software configuration example of management server 2. It is a figure explaining the operation of the transaction support system of this embodiment.

<Outline of the invention>
The contents of the embodiments of the present invention will be described in a list. The present invention includes, for example, the following configuration.
[Item 1]
The sales department that sells the right to issue NFTs corresponding to the contents,
A right storage unit that stores whether or not the NFT has been issued in association with the information that identifies the content.
A change part that makes changes to the content for which the NFT has not been issued, and
A transaction support system characterized by being equipped with.
[Item 2]
The transaction support system described in item 1
The change unit periodically makes changes to the content for which the NFT has not been issued.
A transaction support system featuring.
[Item 3]
The transaction support system according to item 1 or 2.
Further provided with a usage fee collection unit that collects a system usage fee from the purchaser of the right related to the content for which the NFT has not been issued.
A transaction support system featuring.
[Item 4]
The transaction support system according to any one of items 1 to 3.
The right storage unit further stores the owner of the right in association with the information that identifies the content.
Further including an NFT issuing unit that issues the NFT corresponding to the content in response to a request from the owner of the right.
A transaction support system featuring.
[Item 5]
The transaction support system described in item 4, which is the transaction support system.
In response to the request, the change unit changes the owner's name to be displayed in the content.
The NFT issuing unit issues the NFT after the change by the changing unit.
A transaction support system featuring.
[Item 6]
The transaction support system described in item 5, which is the transaction support system.
The sales department sells a first right to issue the NFT and a second right to display the owner's name on the content.
The right storage unit exercised the first right, whether or not the first right was exercised, the first owner of the first right, and the second right in association with the information specifying the content. Remember whether or not and the second owner of the second right.
The change unit changes the content to display the name of the second owner when the request specifies that the second right is to be exercised.
The NFT issuing unit issues the NFT by setting information indicating whether or not the second right can be exercised in the metadata of the NFT.
A transaction support system featuring.
[Item 7]
Steps to sell the right to issue NFTs corresponding to the content,
A step of storing whether or not the NFT was issued in association with the information that identifies the content, and
The step of making changes to the content for which the NFT has not been issued, and
A transaction support method characterized by a computer running.
[Item 8]
Steps to sell the right to issue NFTs corresponding to the content,
A step of storing whether or not the NFT was issued in association with the information that identifies the content, and
The step of making changes to the content for which the NFT has not been issued, and
A program that lets your computer run.

<Overview of the system>
FIG. 1 is a diagram showing an overall configuration example of a transaction support system according to an embodiment of the present invention. The transaction support system of the present embodiment includes a management server 2. The management server 2 is communicably connected to the user terminal 1 via a communication network. The communication network is, for example, the Internet, and is constructed of a public telephone line network, a mobile phone line network, a wireless communication path, Ethernet (registered trademark), and the like.

The management server 2 is also communicably connected to the blockchain network 3. The blockchain network 3 is composed of a plurality of nodes (computers), and can manage ledger data in a distributed manner. The distributed ledger is managed to be difficult to tamper with by the so-called blockchain mechanism. As for the distributed ledger management mechanism by the blockchain, a general one is adopted, and detailed description thereof will be omitted here. The blockchain network 3 can be constructed by, for example, Ethereum.

Tokens (Ethereum tokens) that can be issued by a blockchain network 3 such as Ethereum include fungable tokens and non-fungible tokens (non-fungible tokens: NFT). NFTs are tokens that have no substitutability, unlike fungible tokens. NFTs can have a unique value that distinguishes them from other NFTs. Therefore, the NFT has a unique identifier (NFT-ID) for distinguishing it from other NFTs. An NFT is, for example, a token issued in accordance with the ERC (Ethereum Request for Comments) 721 standard. NFTs that comply with the ERC721 standard are also referred to as NFT-721 tokens. In this embodiment, as an example, it is assumed that the NFT is an NFT-721 token. NFTs can be traded on the blockchain network 3 as well as fungable tokens. The NFT transaction history is recorded in the blockchain network 3. In the distributed ledger of the blockchain network 3, the owner (owner) of the NFT and the ownership history are also recorded.

The transaction support system of the present embodiment is an NFT transaction issued based on images (including still images and moving images) and digital contents such as characters and items used in games (hereinafter, also simply referred to as contents). It is intended to support. In the transaction support system of the present embodiment, the content is not simply sold as an NFT, but is sold with a benefit value including the right to issue an NFT corresponding to the content (hereinafter referred to as an NFT conversion right). The user can issue an NFT corresponding to the content based on the purchased NFT conversion right and trade the issued NFT.

In the present embodiment, the benefit value includes an NFT conversion right, a right to record as the first owner in the NFT (hereinafter referred to as a list right), and a right to put a name in the content (hereinafter referred to as a display right). .) And shall be included. As will be described later, in this embodiment, the content before the NFT is issued can be updated by the system. In addition, the name of the user who owns the display right and exercises the display right can be displayed on the content.

The management server 2 may be a general-purpose computer such as a workstation or a personal computer, or may be logically realized by cloud computing.

<Management server>
FIG. 2 is a diagram showing a hardware configuration example of the management server 2. The configuration shown in the figure is an example, and may have other configurations. The management server 2 includes a CPU 201, a memory 202, a storage device 203, a communication interface 204, an input device 205, and an output device 206. The storage device 203 stores various data and programs, such as a hard disk drive, a solid state drive, and a flash memory. The communication interface 204 is an interface for connecting to the communication network 3, for example, an adapter for connecting to Ethernet (registered trademark), a modem for connecting to a public telephone network, and a wireless communication device for performing wireless communication. , USB (Universal Serial Bus) connector for serial communication, RS232C connector, etc. The input device 205 is, for example, a keyboard, a mouse, a touch panel, a button, a microphone, or the like for inputting data. The output device 206 is, for example, a display, a printer, a speaker, or the like that outputs data. Each functional unit of the management server 2, which will be described later, is realized by the CPU 201 reading a program stored in the storage device 203 into the memory 202 and executing the program, and each storage unit of the management server 2 is the memory 202 and the storage device 203. Is realized as part of the storage area provided by.

FIG. 3 is a diagram showing a software configuration example of the management server 2.
The management server 2 includes a sales unit 211, an NFT issuing unit 212, a transaction processing unit 213, a change unit 214, a usage fee collection unit 215, a product storage unit 231 and a right storage unit 232, a sales period storage unit 233, and a minimum transaction amount storage unit. 234.

The product storage unit 231 stores information (hereinafter referred to as product information) regarding a sales target (content having a benefit value or a benefit value attached; hereinafter referred to as a product). The sales target can be a combination of the right to acquire the content and the benefit value of the acquired content. The product information can include the number of units sold, the selling price, the content price, the NFT conversion right price, the list right price, the display right price, and the like in association with the product ID that identifies the product.

The selling price is the price of the product, that is, the price of the product with the benefit value attached to the content. The content price is the price of the content. The NFT conversion right price is the price of the NFT conversion right included in the product. The list right price is the price of the list right included in the product. The display right price is the price of the display right included in the product.

The right storage unit 232 stores information indicating the state of the right related to the content (hereinafter referred to as right information). That is, the right storage unit 232 can store whether or not the NFT corresponding to the content has been issued (whether or not the NFT conversion right has been exercised) in association with the content. Further, the right storage unit 232 can store whether or not the user is set as the first owner (whether or not the list right is exercised) in the NFT corresponding to the content in association with the content. Further, the right storage unit 232 can store whether or not the display right has been exercised for the content in association with the content. Further, the right storage unit 232 can store the user of the owner who owns these rights (benefit value). The right information stored in the right storage unit 232 includes a user ID indicating a user having a product (the above right), a product ID specifying the product, a purchase date and time of the product, and an NFT in association with the content ID specifying the content. It may include an NFT flag indicating whether or not the conversion right has been exercised, a listing flag indicating whether or not the listing right has been exercised, and a display flag indicating whether or not the display right has been exercised.

The sales period storage unit 233 stores the sales period of the product. The sales period storage unit 233 stores the sales period of the product in association with the product ID. The sales period storage unit 233 can also store the sales period in association with the content ID.

The minimum transaction amount storage unit 234 sets the minimum transaction amount of the NFT. The minimum transaction amount storage unit 234 can store the minimum price at the time of transaction of the NFT issued in association with the content related to the product in association with the product ID.

In addition, the product information, the right information, the sales period, and the minimum are provided in the blockchain network 3 by providing all or a part of the product storage unit 231, the right storage unit 232, the sales period storage unit 233, and the minimum transaction amount storage unit 234. All or part of the transaction amount may be managed by the distributed ledger.

The sales unit 211 sells a product including a benefit value including an NFT conversion right for issuing an NFT corresponding to the content. In the present embodiment, the product includes the content and the benefit value, and the benefit value includes the NFT conversion right, the list right, and the display right. In addition, only a part of these may be included in the product. The sales unit 211 can sell the product as so-called primary distribution. When a plurality of products are sold, the sales unit 211 may transmit a list of products to the user terminal 1. The sales unit 211 can also perform a billing process related to the selling price of the product to the user who considers the product. A general known method can be used for the billing process.

The sales unit 211 can sell the product in response to the reception of the product purchase application request from the user terminal 1. A product ID can be specified in the application request. For each of the designated contents, the sales unit 211 includes a content ID indicating the content, a user ID indicating the user of the sales destination, a product ID indicating the product, a fake NFT flag, and a fake listing flag. , The right information including the fake display flag can be created and registered in the right storage unit 232.

The NFT issuing unit 212 issues an NFT corresponding to the content (certifying the owner of the content) in response to a request from the owner of the NFT conversion right. Information indicating the content (content ID) may be set in the request. When the NFT flag corresponding to the content ID specified in the request is false, the NFT issuing unit 212 can issue the NFT corresponding to the content in the blockchain network 3. Information that identifies the content and information that identifies the owner (owner) are set in the NFT to be issued.

If a user different from the user who purchased the product is specified in the request and the listing flag corresponding to the specified content ID is false, the NFT issuing unit 212 considers the specified user as the owner. It may be set in the meta information of the NFT to be issued.

When the display right of the content is exercised, the NFT issuing unit 212 can include the hash value or the like of the content in the NFT metadata so that the change of the content can be detected. If the display right of the content has been exercised, the content itself may be included in the NFT. Further, when the content change history is managed, information that specifies a specific version of the content may be set in the NFT metadata.

The NFT issuing unit 212 can issue the NFT after the content is changed by the changing unit 214, which will be described later. Further, the NFT issuing unit 212 may issue the NFT by setting information indicating whether or not the display right can be exercised in the NFT metadata.

The NFT issuing unit 212 can send the issued NFT to the wallet of the user who is the owner. Further, when the NFT issuing unit 212 issues the NFT, the NFT issuing flag and the listing flag of the right information corresponding to the content corresponding to the NFT can be truly updated. Further, the NFT issuing unit 212 may truly update the display flag of the right information when the possibility of exercising the display right is not set in the NFT metadata.

The transaction processing unit 213 processes NFT transactions between users including the purchaser. The transaction processing unit 213 performs processing related to so-called secondary distribution. For example, when the NFT is transferred, the transaction processing unit 213 can issue a transaction in the blockchain network 3 to set the transferee user as the owner of the NFT. The transaction processing unit 213 can issue a transaction in response to a transfer request transmitted from the user terminal 1. In the transfer request, information specifying the NFT, a user ID indicating the transfer source user (which may be a transfer source user ID, an account name or a wallet address), and a user ID indicating the transfer destination user (transfer destination). User ID), transfer price, etc. may be included. The transaction processing unit 213 may charge the transferee user for the transfer price (a fee may be added), and may deduct the transfer price (a fee may be deducted) for the transferor user. ) Can be processed. Further, the transaction processing unit 213 can move the NFT from the wallet of the transfer source user ID to the wallet of the transfer destination user ID.

The change unit 214 makes changes to the content for which the corresponding NFT has not been issued. The change unit 214 can periodically make changes to the content for which the NFT has not been issued. The change unit 214 searches for the right information stored in the right storage unit 232 for which the NFT conversion flag indicating that the NFT conversion right is not exercised is set, and is included in the searched right information. The content indicated by the content ID can be changed. The right storage unit 232 is omitted, and the change unit 214 scans the blockchain managed by the blockchain network 3 among the sold contents, and the NFT associated with the contents cannot be found. It may be specified and the specified content may be changed.

The change unit 214 can change the content according to the instruction from the system operator or the instruction from the seller or the distributor of the content according to the preset rule.

For example, the changing unit 214 can change the pose of the character appearing in the content according to the passage of time. For example, the change unit 214 can add and / or change the costumes and items of the characters appearing in the content according to the passage of time. The change unit 214 can reduce the quality of the content over time. For example, the changing unit 214 can lower the resolution of the video or audio, add noise, lower the contrast of the video, and change the color of the video.

The change unit 214 can make changes reversibly or irreversibly. When making a reversible change, for example, the sales unit 211 may sell the right to undo the change. In this case, it is possible to include in the rights information whether or not the right to undo the change has been exercised. The change unit 214 may undo the change in response to a request from the current owner of the right. For example, a change history storage unit for storing the change history may be provided, and a specification of when to return to the content may be accepted.

The change unit 214 can be changed so that the name of the owner is displayed in the content, for example. This may, for example, list the user's name in the end roll of the video content, set the user's name to the name of the character in the video, or incorporate the user's name in the dialogue displayed in the video. be able to. Further, the change unit 214 can change the content so that the name of the owner of the display right is displayed when the request specifies that the display right is to be exercised. In the present embodiment, whether or not the NFT conversion right, the list right, and the display right corresponding to the content are exercised shall be managed by the right information storage unit 232 as a whole in association with the user, but the display right shall be. A display right storage unit may be separately provided to manage whether or not the exercise has been exercised in association with the user and the NFT. Further, when the display flag of the right information is false and the NFT conversion flag is true, and the issued NFT is set with information for which the display right is not exercised (false display flag), the change unit 214 Can issue a transaction to truly set the display flag of the NFT, with the content modified to display the name of the owner of the NFT.

The usage fee collection unit 215 can collect the system usage fee to the purchaser of the right related to the content for which the NFT has not been issued. The usage fee collection unit 215 may also collect the system usage fee for the content issued by the NFT. The usage fee collection unit 215 may collect, for example, a usage fee different from that of the content for which the NFT has not been issued, for the content for which the NFT has been issued. The usage fee collection unit 215 may collect the usage fee only for the content whose display right has not been updated. The usage fee collection unit 215 can collect usage fees on a regular basis (for example, every predetermined period such as one day or one month). The usage fee collection unit 215 can collect the usage fee so as to be higher or lower depending on the elapsed time from the purchase date and time. The usage fee collection unit 215 can collect usage fees in legal tender or virtual currency. In addition, payment of the usage fee may be accepted by prepaid points or the like. The description of the usage fee collection process will be omitted assuming that a general billing process is used.

<Operation>
FIG. 4 is a diagram illustrating the operation of the transaction support system of the present embodiment.

The management server 2 sells the product (S301). A product is a content to which a benefit value such as an NFT conversion right, a display right, and a list right is attached. The management server 2 changes the content (S304) when the request for NFT conversion is not accepted (S302: NO) and when the content change is instructed (S303: YES). The content change instruction may be, for example, set in advance by a rule, an instruction from a content seller or a distributor may be received, or a request for exercising a display right may be received.

On the other hand, when the request for NFT conversion is received (S302: YES), the management server 2 uses the name of the user recorded in the right information when the exercise of the display right is specified (S305: YES). The content is changed so as to be displayed (S306). The management server 2 issues an NFT corresponding to the content (S307).

As described above, according to the transaction support system of the present embodiment, it is possible to make changes to the content before the issuance of the NFT, and it is possible to prevent the content from being changed after the display right is exercised.

Although the present embodiment has been described above, the above embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention also includes an equivalent thereof.

For example, the change unit 214 may make changes to the content by the owner of the NFT achieving the event conditions specified by the system operator. The event condition may be, for example, payment of a system usage fee.

Further, when the content can be changed, the change unit 214 may change the content after receiving permission for the change from the owner of the NFT.

1 User terminal 2 Management server 3 Blockchain network

Claims (8)

The sales department that sells the right to issue NFTs corresponding to digital contents,
A right storage unit that stores whether or not the NFT corresponding to the digital content has been issued in association with the information that identifies the digital content.
A change unit that identifies the digital content for which the NFT has not been issued with reference to the right storage unit, and makes changes to the specified digital content, and a change unit.
A transaction support system characterized by being equipped with. The transaction support system according to claim 1.
The change unit periodically makes changes to the digital content for which the NFT has not been issued.
A transaction support system featuring. The transaction support system according to claim 1 or 2.
Further provided with a usage fee collection unit that collects a system usage fee from the purchaser of the right relating to the digital content for which the NFT has not been issued.
A transaction support system featuring. The transaction support system according to any one of claims 1 to 3.
The right storage unit further stores the owner of the right in association with the information that identifies the digital content.
Further including an NFT issuing unit that issues the NFT corresponding to the digital content in response to a request from the owner of the right.
A transaction support system featuring. The transaction support system according to claim 4.
In response to the request, the change unit changes the owner's name to be displayed on the digital content.
The NFT issuing unit issues the NFT after the change by the changing unit.
A transaction support system featuring. The transaction support system according to claim 5.
The sales department sells the first right to issue the NFT and the second right to display the owner's name on the digital content.
The right storage unit exercises the first right, whether or not the first right is exercised, the first owner of the first right, and the second right in association with the information specifying the digital content. Remember whether or not you did, and the second owner of the second right.
The change unit changes the digital content to display the name of the second owner when the request specifies that the second right is to be exercised.
The NFT issuing unit issues the NFT by setting information indicating whether or not the second right can be exercised in the metadata of the NFT.
A transaction support system featuring. Steps to sell the right to issue NFTs for digital content,
A step of storing in the rights storage unit whether or not the NFT corresponding to the digital content has been issued in association with the information specifying the digital content, and
A step of identifying the digital content for which the NFT has not been issued with reference to the rights storage unit, and making changes to the specified digital content.
A transaction support method characterized by a computer running. Steps to sell the right to issue NFTs for digital content,
A step of storing in the rights storage unit whether or not the NFT corresponding to the digital content has been issued in association with the information specifying the digital content, and
A step of identifying the digital content for which the NFT has not been issued with reference to the rights storage unit, and making changes to the specified digital content.
A program that lets your computer run.

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