JP2022013271A - Non-alternative token management system - Google Patents

Abstract

To provide a distribution platform of a non-alternative token for which a preparation of a wallet, a management of a private key and a payment of service charges of network such as gas are not required.SOLUTION: In a system 1, non-alternative token ownership transfer guarantee information which guarantees to a user who hopes to transact digital content, a legal right to transfer the ownership of a non-alternative token being managed by a first address on a block chain to a second address as a transfer destination on the basis of an issue condition of the non-alternative token corresponding to a digital content recorded in the block chain or a legal right to issue the non-alternative token to the second address on the basis of the issue condition is imparted to a user account identifying the user. In a transaction of the digital content, on the basis of the non-alternative token ownership transfer guarantee information, a change of information on the digital content corresponding to the non-alternative token is recorded in storage means that is different from the block chain.SELECTED DRAWING: Figure 1

Description

There is an application for exception of loss of novelty

The present invention relates to a management system for non-fungible tokens.

In recent years, cryptographic asset transactions using blockchain technology have become widespread. In addition, a mechanism for trading digital assets such as in-game characters and items as non-fungible tokens using blockchain technology is spreading.

Patent No. 66566628

In cryptographic asset transactions, users who trade cryptographic assets need to manage private keys and prepare wallets. It is also necessary to pay a fee called gas to the person who approves the transaction in the transaction of crypto assets. Also, in the transaction of non-fungible tokens, the above-mentioned burden on the user was indispensable.

An object of the present invention is to provide a distribution platform for non-fungible tokens that does not require payment of network fees such as wallet preparation, private key management, and gas.

[1]
The ownership of the non-fungible token managed by the first address on the blockchain is transferred to the transfer destination based on the issuance conditions of the non-fungible token corresponding to the digital content recorded in the blockchain. The legal right to transfer to the second address on the blockchain or the legal right to issue the non-fungible token to the second address based on the issuance conditions is desired to trade the digital content. Non-fungible token ownership transfer guarantee information granting means that grants non-fungible token ownership transfer guarantee information that guarantees to the user to the user account that identifies the user, and
At the time of trading the digital content, based on the non-fungible token ownership transfer guarantee information, the change of the information about the digital content corresponding to the non-fungible token is recorded in a storage means different from the blockchain. A non-fungible token management system equipped with one information registration means.

[2]
A purchase request information acquisition means for acquiring purchase request information of digital contents corresponding to a non-fungible token owned by a user and managed by a first address on the blockchain from a user terminal used by the user.
A means for calculating the total revenue, which calculates the total revenue of the digital content at a predetermined date and time based on the revenue information from the transaction of the digital content.
A purchase application that displays information on the calculated total revenue of the digital content on the display screen of the user terminal and prompts the user whether or not he / she wants to purchase the digital content by setting a predetermined purchase application period. Period setting means and
After the purchase application period has elapsed, a provisional purchase price calculation means for calculating the provisional purchase price of the digital content based on the total revenue of the digital content and the desired number of purchases of the digital content, and
A purchase cancellation period setting means for displaying information on the calculated provisional purchase price of digital content on the display screen of the user terminal together with a predetermined purchase cancellation period.
A final purchase price calculation means for calculating the final purchase price of the digital content based on the total revenue of the digital content and the desired number of purchases of the digital content after the purchase cancellation period has elapsed.
A non-fungible token management system comprising a purchase means for performing a purchase process of the digital content after the lapse of the purchase cancellation period based on the calculated final purchase price of the digital content.

[3]
Based on the issuance conditions of the non-fungible token corresponding to the digital content recorded in the blockchain, the ownership of the non-fungible token managed by the first address on the blockchain is transferred to the transfer destination. A user who wishes to trade the digital content with the legal right to transfer to the second address on the blockchain or to issue the non-fungible token to the second address based on the issuance conditions. The non-fungible token ownership transfer guarantee information granting means for granting the non-fungible token ownership transfer guarantee information to the user account that identifies the user,
The first method of recording information about the digital content corresponding to the non-fungible token in a storage means different from the blockchain based on the non-fungible token ownership transfer guarantee information at the time of trading the digital content. Information registration method and
A purchase request information acquisition means for acquiring purchase request information of digital contents corresponding to a non-fungible token owned by the user and managed by the first address from a user terminal used by the user.
A means for calculating the total revenue, which calculates the total revenue of the digital content at a predetermined date and time based on the revenue information from the transaction of the digital content.
A purchase application that displays information on the calculated total revenue of the digital content on the display screen of the user terminal and prompts the user whether or not he / she wants to purchase the digital content by setting a predetermined purchase application period. Period setting means and
After the purchase application period has elapsed, a provisional purchase price calculation means for calculating the provisional purchase price of the digital content based on the total revenue of the digital content and the desired number of purchases of the digital content, and
A purchase cancellation period setting means for displaying information on the calculated provisional purchase price of digital content on the display screen of the user terminal together with a predetermined purchase cancellation period.
A final purchase price calculation means for calculating the final purchase price of the digital content based on the total revenue of the digital content and the desired number of purchases of the digital content after the purchase cancellation period has elapsed.
A non-fungible token management system comprising a purchase means for performing a purchase process of the digital content after the lapse of the purchase cancellation period based on the calculated final purchase price of the digital content.

According to the present invention, it is possible to provide a distribution platform for non-fungible tokens that does not require payment of network fees such as cryptocurrency wallet preparation, private key management, and gas.

It is a figure which shows an example of the structure of the non-fungible token management system of this invention. It is a figure which shows an example of the structure of the non-fungible token management server provided in the non-fungible token management system of this invention. (A) It is a figure which shows an example of the functional structure of the information registration means provided in the non-fungible token management server. (B) It is a figure showing an example of the functional structure of the digital content sales management means provided in the non-fungible token management server. (C) It is a figure which shows an example of the functional structure of the non-fungible token management means provided in the non-fungible token management server. (D) It is a figure which shows an example of the functional structure of the digital content purchase management means provided in the non-fungible token management server. It is a figure which shows an example of the digital contents information which can be purchased which is displayed on a user terminal. It is a figure which shows an example of the digital contents list information displayed on a user terminal. (A), (b), and (c) are all diagrams showing an example of a display screen of a user terminal when digital contents are transferred to an external wallet. Both (a) and (b) are diagrams showing an example of a display screen of a user terminal when digital contents are sent to another user's account. It is a figure which shows an example of the display screen of the user terminal at the time of reflecting the digital content purchased in the secondary distribution system in the non-fungible token management system of this invention. (A) It is a figure showing an example of the purchase application form of the digital content displayed on a user terminal. (B) Following FIG. 9A, it is a diagram showing an example of a display screen for selecting a digital content desired to be purchased. (C) Following FIG. 9B, it is a diagram showing an example of a display screen after selecting the digital content to be purchased. (A) It is a figure showing an example of the purchase confirmation form displayed on the user terminal. (B) It is a figure showing an example of the display screen of the purchase completion. It is a figure which shows an example of the ranking information displayed on a user terminal. It is a 1st non-fungible token management processing flow diagram by this invention. It is a 2nd non-fungible token management processing flow diagram by this invention. It is a 3rd non-fungible token management processing flow diagram by this invention. It is a 4th non-fungible token management processing flow diagram by this invention. It is a 5th non-fungible token management processing flow diagram by this invention. It is a sixth non-fungible token management processing flow diagram by this invention.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the accompanying drawings. The non-fungible token management system of the present embodiment is a system for trading digital contents as non-fungible tokens. As an example, the non-substitutable token management system 1 shown in FIG. 1 includes a non-substitutable token management server 2 and a plurality of user terminals 3A, 3B, 3C, ... ”), A secondary distribution system 4 for digital content, and a distributed database 6 (hereinafter, the database is referred to as“ DB ”in this embodiment) that manages the distribution of digital content using a blockchain. There is. The non-fungible token management server 2 and the user terminal 3 are connected to each other so as to be able to communicate with each other via the communication network 5. The user terminal 3 and the secondary distribution system 4 are connected to each other so as to be able to communicate with each other via the communication network 5.

The blockchain used in the non-fungible token management system 1 of the present embodiment has a contract function, and for example, a blockchain such as Ethereum can be adopted. Further, the blockchain of the present embodiment is constructed in the distributed DB 6, and is managed by each of the non-fungible token management server 2, the user terminal 3, and the secondary distribution system 4.

The digital content used in the non-fungible token management system 1 of the present embodiment is issued as a non-fungible token. In this embodiment, as an example, a card representing a character of a work such as a manga or an animation, or a special privilege for the work is used as digital content. In addition, game characters, items used in games, video works, etc. can also be adopted as digital contents as long as they are issued as non-fungible tokens.

Further, in the present embodiment, (1) the name of the digital content such as the title of the work and the type of the digital content written in the blockchain as a smart contract, (2) the maximum number of digital contents to be issued, (3) the image data and the like. Individuals, including creators, publishers commissioned by creators, or individuals based on non-substitutable token issuance rules, such as metadata links to define the individuality of non-substitutable tokens such as symbols and attributes, etc. Content data acquired from a content provider such as a corporation is processed into digital content by the operator who operates the non-substitutable token management service according to the present embodiment, and the digital content is designated by the operator as a non-substitutable token. The operator reserves the right to issue or issue any address on the blockchain in advance to the first address. In addition, a non-fungible token for digital content created by the creator or the like may be issued by the operator to an address managed by the operator or an address designated by the user.

The first address is a public key created by a public key cryptosystem and paired with a private key. In the present embodiment, the address is created by the operator using the private key and is managed by the non-fungible token management service according to the present embodiment, or is an address on the blockchain created in advance by the user.

The user terminal 3 is a personal computer used by a user who wishes to trade digital contents by using the non-substitutable token management service according to the present embodiment and supports the creation of a work related to the digital contents. It is a terminal such as a tablet or a smartphone. The user terminal 3 accesses the non-fungible token management server 2, accesses the non-fungible token management service according to the present embodiment or the secondary distribution system 4, and uses a web browser for using the secondary distribution service of digital contents. I have. Further, an application program for trading non-fungible tokens is installed in the user terminal 3 through a user interface with the non-fungible token management server 2 or the secondary distribution system 4.

Although not shown, the user terminal 3 composed of a computer includes an arithmetic processing unit composed of a CPU or the like to process and perform various data, a main storage unit for storing various data such as a main memory, and a liquid crystal display or the like. It is equipped with an information output unit, an information input unit such as a touch panel, and a communication unit for transmitting and receiving various types of information.

The secondary distribution system 4 is a system composed of one or a plurality of computers, and can sell the digital contents purchased by the user in the non-substitutable token management service according to the present embodiment, and purchases the sold digital contents. It is a system that provides a possible external market.

The non-fungible token management server 2 is a server device composed of one or a plurality of computers. The non-fungible token management server 2 is managed by an operator who operates a transaction of digital contents by the non-fungible token management service according to the present embodiment.

As shown in FIG. 2, the non-substitutable token management server 2 includes information transmission / reception means 7, control means 8, storage means 9, information registration means 14, digital content sales management means 15, non-substitutable token management means 16, and digital. It includes a content purchase management means 17 and an evaluation information creation means 18.

The information transmission / reception means 7 transmits / receives information to / from the user terminal 3.

The control means 8 is composed of a CPU or the like, includes an arithmetic processing unit that processes and calculates various data, and a main storage unit that stores various data such as a main memory, and is provided with a non-substitutable token management server 2. Control information processing by each means.

The storage means 9 is a storage area accessible from an application deployed on the non-fungible token management server 2, such as internal storage. In the present embodiment, the storage means 9 stores the user information 10, the non-fungible token ownership transfer guarantee information 11, and the content information 12, and a purchase price adjustment pool 13 for adjusting the purchase price of the digital content is constructed. ing.

The user information 10 is information that identifies a user who uses the non-fungible token management service according to the present embodiment, such as a user account. A user's account is associated with digital content owned by the user, its quantity, ranking information, and the like.

The non-fungible token ownership transfer guarantee information 11 is based on the terms of use between the user and the operator when the user purchases digital contents by using the non-fungible token management service according to the present embodiment. "Transfer the ownership of the non-fungible token managed by the first address on the blockchain to any address on the blockchain to which it is transferred, or the operator has the right to issue it" to the user's account. Information that grants the legal right to issue a non-fungible token to any address on the blockchain. In the present embodiment, as an example, when the digital content is purchased, the transfer of ownership of the digital content is not recorded in the blockchain, and the address of the operator on the blockchain, which is the first address, is arbitrarily displayed on the blockchain. The right to transfer ownership of the non-fungible token to the address of is legally guaranteed.

The transfer destination address is a public key that is created by a public key cryptosystem and is paired with a private key. In the present embodiment, the transfer destination address is set as the second address, and the address or user created by the operator using the private key and managed in the non-fungible token management service according to the present embodiment is in advance. It is an address on the blockchain that is being created.

In the present embodiment, the content information 12 is digital content in which a character of a work such as a manga or an animation is represented on a card. In addition, the content information 12 can include information for participating in a project corresponding to each work, such as access rights to the community for works related to digital contents and acquisition of limited contents.

The purchase price adjustment pool 13 is an area for recording revenue information of digital contents because the digital content purchase management means 17, which will be described later, executes a total revenue calculation process, a provisional purchase price calculation process, and a final purchase price calculation process for each digital content. Is.

The information registration means 14 registers various information in the storage means 9 and registers various information in the blockchain. As shown in FIG. 3, the information registration means 14 of the present embodiment includes a first information registration means 14a and a second information registration means 14b.

The first information registration means 14a records in the storage means 9 a change in information about the digital content corresponding to the non-fungible token based on the non-fungible token ownership transfer guarantee information 11 at the time of transaction of the digital content. Perform the processing.

The second information registration means 14b records in the blockchain that the ownership of the non-fungible token managed by the first address is transferred to the second address to be transferred when the digital content is traded. Perform the processing.

The digital content sales management means 15 prompts the user terminal 3 to perform various operations through a user interface with the user terminal 3, and manages the sale of digital content based on various information input from the user terminal 3. The non-substitutable token management server 2 is made to function as a means. As shown in FIG. 3, the digital content sales management means 15 of the present embodiment includes a sales means 15a, a payment means 15b, and a selling price adjusting means 15c.

The selling means 15a acquires the purchase request information of the digital content from the user terminal 3 and transmits the list information of the digital contents that can be purchased to the user terminal 3 together with the selling price and the selling period (FIG. 12-S102, FIG. 12-S102). S103). In the present embodiment, as shown in FIG. 4, the selling means 15a shifts the display screen of the user terminal 3 from a predetermined home screen to a digital content purchasing screen, and digital content representing characters of works such as cartoons and animations on a card. A digital content purchase form 19 including purchaseable digital content list information, selling price, and purchaseable period, which is a set of 20 plurality of types, is displayed on the display screen of the user terminal 3, and the user terminal 3 is urged to purchase or not. In the form shown in FIG. 4, as an example, 5 random characters out of 100 types of character cards can be purchased as a set for the work AAA, and 3 types of character cards (digital) are represented among the 100 types of character cards. The contents 20A, 20B, 20C) are displayed on the display screen of the user terminal 3. In addition, the purchaseable period, selling price, and remaining number of purchases are also displayed.

The user selects the digital content to be purchased on the digital content purchase form 19 displayed on the display screen of the user terminal 3 (FIG. 12-S104).

The payment means 15b acquires payment processing request information for the digital content 20 desired to be purchased from the user terminal 3 and performs predetermined payment processing (FIG. 12-S105). For example, the payment means 15b acquires the user's credit card information from the user terminal 3, performs a predetermined authentication process, and performs a payment process for the digital content 20 related to the purchase.

In the present embodiment, the selling price of the digital content 20 is set as a fixed price, but the selling price may be adjusted. In this case, the selling price adjusting means 15c performs a process of adjusting the selling price of the digital content 20 according to the transaction volume of the digital content 20. For example, the selling price adjusting means 15c adjusts the selling price of the digital content 20 based on the remaining number of available purchases at a predetermined timing during the purchaseable period of the digital content 20 shown in FIG. Therefore, depending on the remaining number of digital contents 20 that can be purchased, the selling price at the end of the available period is set to be higher or lower than the selling price at the beginning of the available period.

The non-fungible token management means 16 prompts the user terminal 3 to perform various operations on the digital content 20 owned by the user through the user interface with the non-fungible token creation means and the user terminal 3, and the user terminal. The token management server 2 is made to function as a means for managing non-fungible tokens for the digital content 20 held by the user based on various information input from 3. In the present embodiment, as shown in FIG. 3, the non-fungible token management means 16 includes the non-fungible token creating means 16a, the non-fungible token ownership transfer guarantee information giving means 16b, the display control means 16c, and the first. It is provided with a transfer means 16d, a second transfer means 16e, a third transfer means 16f, a non-fungible token ownership transfer confirmation means 16 g, and a delivery means 16h.

The non-substitutable token creating means 16a is written in the blockchain as a smart contract (1) the name of the digital content such as the title of the work and the type of the digital content, (2) the maximum number of digital contents to be issued, and (3) the image. The content information 12 stored in the storage means 9 is not based on the issuance rule of the non-substitutable token such as a metadata link for defining the individuality of the non-substitutable token such as data, a symbol, an attribute, etc. Performs the process of creating substitutability tokens. In this embodiment, the created non-fungible token is issued to the operator's address, which is the primary address. Further, the non-fungible token creating means 16a records the issuance information of such a non-fungible token in the blockchain (FIG. 12-S101).

The non-fungible token ownership transfer guarantee information granting means 16b takes ownership of the non-fungible token for the digital content 20 managed by the first address on the blockchain based on the payment processing by the payment means 15b. , The non-fungible token ownership transfer guarantee information 11 that guarantees the user to move to the second address on the blockchain to be the transfer destination is given to the user account (FIG. 12-S106). In the present embodiment, the non-fungible token ownership transfer guarantee information granting means 16b grants the non-fungible token ownership transfer guarantee information 11 to the user account, for example, 100 types of the work AAA sold in FIG. If the user purchases one set of 5 random cards from the above character cards and the payment is completed, the user will own the randomly selected character card, but the transfer of ownership of the character card will not be possible. It is not recorded in the blockchain, and the user purchased from the operator's address on the blockchain, which is the first address, to the second address on the blockchain to be transferred according to the terms of use between the user and the operator. It legally guarantees the right to transfer ownership of the non-fungible token for Digital Content 20.

Along with the above processing, the non-fungible token ownership transfer guarantee information granting means 16b records the issued non-fungible token ownership transfer issuance guarantee information 11 in the storage means 9 (FIG. 12-S107). Further, the first information registration means 14a changes the owner of the digital content 20 (change from the operator to the user) or the digital content 20 owned by the user with respect to the user information 10 recorded in the storage means 9. Record the quantity of (FIG. 12-S107). Further, the first information registration means 14a records information on the profit from the sale of the digital content 20 in the purchase price adjustment pool 13 (FIG. 12-S107). Further, the first information registration means 14a updates information such as the remaining number of digital contents 20 for the content information 12 recorded in the storage means 9 (FIG. 12-S107).

Based on the non-fungible token ownership transfer guarantee information 11, the display control means 16c corresponds to the non-fungible token while retaining the ownership of the non-fungible token by the operator, and the digital purchased by the user. A process of displaying the content 20 on the display screen of the user terminal 3 is performed (FIG. 12-S108). In the present embodiment, as shown in FIG. 5, the display control means 16c displays the character cards (digital contents 20A, 20B) purchased by the user for the work AAA on the display screen of the user terminal 3 as the digital content list information 21. In this case, the ownership of the digital contents 20A and 20B purchased by the user is transferred to the purchased user by the processing by the first information registration means 14a described above in the storage means 9. On the blockchain, the operator holds the issue right, and issues to the second address of the transfer destination specified by the purchasing user.

The first transfer means 16d, the second transfer means 16e, and the third transfer means 16f are non-fungible tokens from the user terminal 3 having a user account to which the non-fungible token ownership transfer guarantee information 11 is given. The non-fungible token management server 2 is a means of acquiring the ownership transfer request information and transferring the ownership of the non-fungible token from the first address on the blockchain to the second address specified by the user. To work.

The first transfer means 16d acquires the transfer request information of the non-fungible token for the digital content 20 owned by the user from the user terminal 3 having the user account to which the non-fungible token ownership transfer guarantee information 11 is given. Then, from the address managed by the operator on the blockchain, which is the first address, to the specific address on the blockchain specified by the user, which is the second address of the transfer destination, the non-transfer request information is related to the above. Performs the process of transferring the substitute token.

In the present embodiment, the move-out destination address, which is the second address of the move-out destination, is input in the move-out destination address setting form 22 displayed on the user account confirmation screen as shown in FIG. 6A from the predetermined home screen. To. The user can input the address created in advance by the user as the second address in the move-out destination address setting form 22.

The first transfer means 16d displays a transfer form 23 as shown in FIG. 6B on the display screen of the user terminal 3 from a predetermined home screen, and is a transfer target from the digital contents 20 owned by the user. Prompts the user terminal 3 to select the digital content 20 (FIGS. 13-S201, S202).

The user selects the digital content 20 desired to move out in the move-out form 23 displayed on the display screen of the user terminal 3 (FIGS. 13-S203).

When the digital content 20 to be transferred is selected in the transfer form 23 shown in FIG. 6B, the first transfer means 16d uses the transfer confirmation form 24 as shown in FIG. 6C on the user terminal 3. It is displayed on the display screen and prompts the user terminal 3 to confirm the move-out (FIG. 13-S204).

The user selects the move-out confirmation on the move-out confirmation form 24 displayed on the display screen of the user terminal 3 (FIG. 13-S205).

The first transfer means 16d accepts the confirmation of the move-out from the user terminal 3 in the move-out confirmation form 24 shown in FIG. 6 (c), and the second move-out address setting form 22 input in the move-out destination address setting form 22 shown in FIG. 6 (a). The non-fungible token for the digital content 20 to be transferred is transferred to the address from the address managed by the operator, which is the first address. Here, the address managed by the operator means the address of the operator or the address of the user used in the non-fungible token management service of the present embodiment.

By the processing by the first transfer means 16d, the user sells the digital content 20 held in the non-fungible token management service of the present embodiment to, for example, the external market in the secondary distribution system 4, and the secondary distribution market. In 4, it is possible to make a transaction with another user.

Along with the above processing, the first information registration means 14a updates the quantity of the digital content 20 held by the user with respect to the user information 10 recorded in the storage means 9 (FIG. 13-S206). As a result, in the digital content list information 21 shown in FIG. 5, the digital content 20 related to the transfer is deleted. Further, the first information registration means 14a updates the quantity of the digital contents 20 with respect to the content information 12 recorded in the storage means 9 (FIG. 13-S206). Further, the second information registration means 14b records the transfer of ownership of the digital content 20 owned by the user on the blockchain (FIG. 13-S207).

The second transfer means 16e acquires the non-fungible token transmission request information for the digital content 20 owned by the user from the user terminal 3 having the user account to which the non-fungible token ownership transfer guarantee information 11 is given. Then, the process of sending the non-fungible token related to the sending request information from the sending user account to the user account of another user of the sending destination is performed.

In the present embodiment, the second transfer means 16e displays the delivery form 25 as shown in FIG. 7A on the display screen of the user terminal 3 from the predetermined home screen, and the digital content 20 owned by the user. The user terminal 3 is prompted to select the digital content 20 to be sent from among the digital contents (FIGS. 14-S301 and S302).

The user selects the digital content 20 to be sent in the delivery form 25 displayed on the display screen of the user terminal 3 (FIG. 14-S303).

When the digital content 20 to be sent is selected in the delivery form 25 shown in FIG. 7 (a), the second transfer means 16e displays the destination confirmation form 26 as shown in FIG. 7 (b) at the user terminal 3. Is displayed on the display screen of, and prompts the user terminal 3 to input the destination information such as the user name, user account, etc. to be the destination.

The user inputs the destination information of the digital content 20 in the destination confirmation form 26 displayed on the display screen of the user terminal 3 (FIG. 14-S303).

The second transfer means 16e accepts the input of the destination information from the user terminal 3 in the destination confirmation form 26 shown in FIG. 7 (b), and the digital to be sent to the account of another user related to the destination information. The non-fungible token for the content 20 is sent from the sender's user account (FIG. 14-S304).

By the processing by the second transfer means 16e, the user can donate the digital content 20 possessed by the non-fungible token management service of the present embodiment to another user.

Along with the above processing, the first information registration means 14a changes the owner of the digital content 20 (change from one user to another user) with respect to the user information 10 recorded in the storage means 9. And, the quantity of the digital contents 20 owned by the user is updated (FIG. 14-S305).

The third transfer means 16f acquires the upload destination address request information of the non-fungible token for the digital content 20 owned by the user from the user terminal 3, and from the user's address on the block chain which is the first address. , The process of uploading the non-fungible token for the digital content owned by the user to the second address managed by the operator on the blockchain of the non-fungible token management service of the present embodiment designated by the user is performed. As the first address, an address created in advance by the user can be used.

In the present embodiment, the third transfer means 16f displays the upload destination address 27 as shown in FIG. 8 on the display screen of the user terminal 3 from the predetermined home screen (FIGS. 15-S401, S402). For example, the user accesses the secondary distribution system 4 and uploads the digital content held in the secondary distribution system 4 to the user account in the non-substitutable token management service of the present embodiment, so that is shown in FIG. The upload destination address 27 is input to request the blockchain to perform the upload process. As a result, the digital content to be uploaded is sent to the upload destination address 27 (FIG. 15-S403).

The non-fungible token ownership transfer confirmation means 16g is a second address from the user's address on the blockchain, which is the first address, and is a block of the non-fungible token management service of the present embodiment specified by the user. It is confirmed that the ownership of the non-fungible token for the digital content held by the user in the secondary distribution system 4 has been transferred to the upload destination address on the chain (FIG. 15-S404).

By the processing by the third transfer means 16f, the user can hold the digital content held at the first address in the non-fungible token management service of the present embodiment.

Along with the above processing, the first information registration means 14a updates the quantity of the digital content 20 held by the user with respect to the user information 10 recorded in the storage means 9 (FIG. 15-S405).

The delivery means 16h is an address owned by the user and managed by the operator on the blockchain, which is the first address, from the user terminal 3 having the user account to which the non-fungible token ownership transfer guarantee information 11 is given. The non-fungible token corresponding to the digital content 20 to be destroyed is obtained from the first address by acquiring the destruction request information of the digital content 20 corresponding to the non-fungible token issued to the third. Performs the process of sending to an address whose private key is unknown on the blockchain, which is the address of. In the present embodiment, the sending means 16h prompts the user terminal 3 to select whether or not to discard the digital content 20 and to select the digital content 20 to be discarded in the digital content list information 21 displayed on the user terminal 3 shown in FIG. (FIGS. 16-S501, S502).

The user selects the digital content 20 desired to be discarded in the digital content list information 21 displayed on the user terminal 3 (FIG. 16-S503).

The first information registration means 14a changes the owner of the digital content 20 (change from the user to the operator) and the quantity of the digital content 20 held by the user with respect to the user information 10 recorded in the storage means 9. Is updated (FIG. 16-S504).

The sending means 16h corresponds to the digital content 20 to be destroyed from the address managed by the operator on the blockchain, which is the first address, based on the destruction request information of the digital content 20 acquired from the user terminal 3. The non-fungible token is sent to the third address, the address whose private key is unknown on the blockchain. This process will destroy the non-fungible token. In the present embodiment, the address whose private key is unknown is a public key whose private key is difficult to identify, and is a 0x0 address. Since it is virtually impossible to back-calculate the private key from this public key, no one can use the non-fungible token sent to the public key.

Along with the above processing, the second information registration means 14b is a non-fungible token corresponding to the digital content 20 to be destroyed from the address managed by the operator on the blockchain, which is the first address. Is sent to the third address, the address whose private key is unknown on the blockchain, and is recorded in the blockchain (FIG. 16-S505).

The digital content purchase management means 17 prompts the user terminal 3 to perform various operations through the user interface with the user terminal 3, and manages the purchase of the digital content 20 based on various information input from the user terminal 3. The non-substitutable token management server 2 is made to function as a means of doing so. As shown in FIG. 3, the digital content purchase management means 17 of the present embodiment includes a purchase request information acquisition means 17a, a total revenue calculation means 17b, a purchase application period setting means 17c, a provisional purchase price calculation means 17d, and a purchase cancellation period setting. The means 17e, the final purchase price calculation means 17f, and the purchase means 17g are provided.

The purchase request information acquisition means 17a is on the blockchain, which is the first address owned by the user for each work from the user terminal 3 having the user account to which the non-fungible token ownership transfer guarantee information 11 is given. A process of acquiring the purchase request information of the digital content 20 corresponding to the non-fungible token issued to the address managed by the operator is performed (FIG. 17-S602). In the present embodiment, the purchase request information acquisition means 17a displays the purchase application form 28 as shown in FIG. 9A on the display screen of the user terminal 3 from a predetermined home screen, and the user holds the purchase request information 17a on the user terminal 3. It prompts the presence or absence of purchase of the digital content 20 and the selection of the digital content 20 to be purchased (FIG. 17-S603). Alternatively, in the digital content list information 21 displayed on the display screen of the user terminal 3 shown in FIG. 9B, the purchase request information acquisition means 17a presses the "card purchase" selection button or the like to display the digital content 20 on the user terminal 3. Prompts for the presence or absence of purchase, and transitions the display screen to the purchase application form 28 shown in FIG. 9 (c).

The user selects the digital content 20 desired to be purchased from the digital content list information 21 displayed on the display screen of the user terminal 3 shown in FIG. 9B (FIG. 17-S604).

The total profit calculation means 17b performs a process of calculating the total profit of the digital content 20 at a predetermined date and time based on the profit information from the transaction of the digital content 20. In the present embodiment, as an example, the total revenue calculation means 17b calculates the amount obtained by multiplying the revenue of the digital content 20 for each work recorded in the purchase price adjustment pool 13 by a predetermined ratio on the nth day of each month. Calculated as the total revenue of the digital content 20 (FIG. 17-S601).

The purchase application period setting means 17c displays information on the calculated total profit of the digital content 20 on the display screen of the user terminal 3, and determines whether or not the user wants to purchase the digital content 20 by a predetermined purchase application. Perform processing that encourages you with a period. In the present embodiment, the purchase application period setting means 17c displays the total revenue 29 of the digital content 20 calculated by the revenue total calculation means 17b in the purchase application form 28 shown in FIGS. 9A and 9C every month. Display for viewing by users after the date. Further, the purchase application period setting means 17c displays the purchase application period (n + 5 days) 30 on the purchase application form 28 shown in FIGS. 9A and 9C, and purchases the digital content 20 on the user terminal 3. Prompt the selection of the presence / absence and the digital content 20 to be purchased.

The purchase application period setting means 17c ends the acceptance of the purchase application for the digital content 20 after the purchase application period 30 ends (FIG. 17-S605).

After the purchase application period 30 has elapsed, the provisional purchase price calculation means 17d performs a process of calculating the provisional purchase price of the digital content 20 based on the total revenue 29 of the digital content 20 and the desired number of purchases of the digital content 20. In the present embodiment, the provisional purchase price calculation means 17d calculates the amount obtained by dividing the total revenue 29 by the number of purchase applications as the provisional purchase price of the digital content 20 after the purchase application period (n + 5 days) 30 has elapsed. (FIG. 17-S606).

The purchase cancellation period setting means 17e performs a process of displaying the calculated information about the provisional purchase price of the digital content 20 on the display screen of the user terminal 3 together with the predetermined purchase cancellation period. In the present embodiment, the purchase cancellation period setting means 17e displays the purchase confirmation form 31 as shown in FIG. 10A on the display screen of the user terminal 3, and in the purchase confirmation form 31, the provisional purchase price calculation means 17d is used. The calculated provisional purchase price 32 of the digital content 20 is displayed (FIG. 17-S607). Further, the purchase cancellation period setting means 17e displays the purchase cancellation period (n + 7 days) 33 on the purchase confirmation form 31 shown in FIG. 10 (a). If the purchase of the digital content 20 by the user is canceled, the purchase process is not performed and the process ends (FIG. 17-S608-Y).

The final purchase price calculation means 17f determines the final purchase price of the digital content 20 based on the total revenue 29 of the digital content 20 and the desired number of digital contents 20 after the purchase cancellation period 33 has elapsed. calculate. In the present embodiment, the final purchase price calculation means 17f digitally obtains the amount obtained by dividing the total revenue 29 by the number of purchase applications after the purchase cancellation period 33 has elapsed after the purchase cancellation period (n + 7 days) 33 has elapsed. Calculated as the final purchase price of the content 20 (FIG. 17-S609).

The purchasing means 17g performs a purchasing process for the digital content 20 based on the calculated final purchase price of the digital content 20 (FIG. 17-S610). After the purchase process is executed, the purchase means 17g displays information on the completion of the purchase process of the digital content 20 as shown in FIG. 10B on the display screen of the user terminal 3.

Along with the above processing, the first information registration means 14a changes the owner of the digital content 20 (change from the user to the operator) and the user owns the user information 10 recorded in the storage means 9. The quantity of the digital content 20 to be used is updated (FIG. 17-S611).

The evaluation information creating means 18 ranks between works and / or is owned by each user for each work based on the total number of digital contents 20 owned by all users for each work related to the digital content 20. Based on the number of digital contents 20 possessed, ranking among users is performed for each of the works.

In the present embodiment, the evaluation information creating means 18 is owned by all users for each work from the quantity of digital contents 20 held by the user for each work associated with the user information 10 recorded in the storage means 9. The total number of digital contents 20 owned is totaled. The evaluation information creating means 18 ranks the works based on the total number of digital contents 20 held by all users for each of the aggregated works, and creates the work ranking information 34. The evaluation information creating means 18 displays the work ranking information 34 as shown in FIG. 11 on the display screen of the user terminal 3. The work ranking information 34 shown in FIG. 11 indicates that the total number of digital contents 20 held by all users is the largest for the work AAA.

Further, in the present embodiment, the evaluation information creating means 18 is used by each user for each work from the quantity of digital contents 20 held by the user for each work associated with the user information 10 recorded in the storage means 9. The number of possessed digital contents 20 is totaled. The evaluation information creating means 18 ranks the users for each work based on the number of digital contents 20 held by each user for each of the aggregated works, and creates the user ranking information 35. The evaluation information creating means 18 displays the user ranking information 35 as shown in FIG. 11 on the display screen of the user terminal 3. In the user ranking information 35 shown in FIG. 11, for the work AAA, the work BBB, and the work CCC, the users who have a large number of digital contents 20 of each work are displayed.

In addition to the above, the evaluation information creating means 18 is a user who possesses the destroyed digital content 20 and / or the destroyed digital content 20 based on the number of the destroyed digital contents 20. It may be ranked. For example, the evaluation information creating means 18 is based on the number of digital contents 20 sent to the secret key unknown address on the blockchain, which is the third address performed by the sending means 16h of the non-substitutable token management means 16 described above. The work ranking information is created so that the work of the digital content 20 is ranked higher as the number of the digital contents 20 sent is larger, and the work is displayed on the display screen of the user terminal 3. Further, the evaluation information creating means 18 discards the digital content 20 as the number of digital contents 20 sent increases, based on the number of digital contents 20 sent by the sending means 16h of the non-substitutable token management means 16 described above. User ranking information is created so that the user who requested the above is ranked higher, and the user is displayed on the display screen of the user terminal 3.

As described above, in the present embodiment, the non-fungible token ownership transfer guarantee information granting means 16b is managed by the first address on the blockchain, or the operator holds the issuance right of the non-fungible token. Is performed to give the user account the non-fungible token ownership transfer guarantee information 11 that guarantees the user the legal right to transfer or issue to the second address on the block chain to be the transfer destination. Further, the first information registration means 14a obtains the ownership of the non-fungible token managed by the first address based on the non-fungible token ownership transfer guarantee information 11 at the time of the transaction of the digital content 20. A process of recording a change in information about the digital content 20 corresponding to the non-fungible token in the storage means 9 is performed while holding the information at one address.

By these processes, when the user purchases the digital content 20, the digital content 20 is associated with the user account, but since the ownership of the digital content 20 is not transferred to the user in the blockchain, the user is substantially. Can provide the user with the state of owning the digital content 20. Therefore, in the process in which the user purchases and holds the digital content 20 using the non-fungible token management service of the present embodiment, the user does not need to prepare the wallet, and inevitably, the management of the private key for the wallet and the management of the private key are performed. There is no need to pay for gas. It should be noted that the fact that the user owns the digital content 20 is not a description of the blockchain, but the terms of use of the non-fungible token management service of the present embodiment between the operator and the user, that is, the non-fungible token. It will be secured by the issuance guarantee information 11.

1 Non-substitutable token management system 2 Non-substitutable token management server 3 User terminal 4 Secondary distribution system 5 Communication network 6 Distributed database 7 Information transmission / reception means 8 Control means 9 Storage means 10 User information 11 Non-substitutable token ownership transfer guarantee Information 12 Content information 13 Purchase price adjustment pool 14 Information registration means 15 Digital content sales management means 16 Non-substitutable token management means 17 Digital content purchase management means 18 Evaluation information creation means 19 Digital content purchase form 20 Digital content 21 Digital content list information 22 Move-out address setting form 23 Move-out form 24 Move-out confirmation form 25 Sending form 26 Sending address confirmation form 27 Uploading address 28 Purchase application form 29 Total profit 30 Purchase application period 31 Purchase confirmation form 32 Temporary purchase price 33 Purchase cancellation period 34 Works Ranking information 35 User ranking information

Claims (11)

Based on the issuance conditions of the non-fungible token corresponding to the digital content recorded in the blockchain, the ownership of the non-fungible token managed by the first address on the blockchain is transferred to the transfer destination. A user who wishes to trade the digital content with the legal right to transfer to the second address on the blockchain or to issue the non-fungible token to the second address based on the issuance conditions. The non-fungible token ownership transfer guarantee information granting means for granting the non-fungible token ownership transfer guarantee information to the user account that identifies the user,
At the time of trading the digital content, based on the non-fungible token ownership transfer guarantee information, the change of the information about the digital content corresponding to the non-fungible token is recorded in a storage means different from the blockchain. A non-fungible token management system equipped with one information registration means. The ownership transfer request information of the non-fungible token is acquired from the user terminal having the user account to which the non-fungible token ownership transfer guarantee information is given, and the user designates the non-fungible token from the first address. A transfer means for transferring ownership of the non-fungible token to the second address,
The non-fungible token according to claim 1, further comprising a second information registration means for recording the transfer of ownership of the non-fungible token from the first address to the second address on the blockchain. Management system. The ownership transfer request information of the non-fungible token is acquired from the user terminal having the user account to which the non-fungible token ownership transfer guarantee information is given, and the user designates the non-fungible token from the first address. The non-fungible token management system according to claim 1, further comprising a non-fungible token ownership transfer confirmation means for confirming that the ownership of the non-fungible token has been transferred to the second address. The non-fungible token management system according to any one of claims 1 to 3, further comprising a selling price adjusting means for adjusting the selling price of the digital content according to the transaction volume of the digital content. A purchase request information acquisition means for acquiring purchase request information of digital contents corresponding to a non-fungible token owned by a user and managed by a first address on the blockchain from a user terminal used by the user.
A means for calculating the total revenue, which calculates the total revenue of the digital content at a predetermined date and time based on the revenue information from the transaction of the digital content.
A purchase application that displays information on the calculated total revenue of the digital content on the display screen of the user terminal and prompts the user whether or not he / she wants to purchase the digital content by setting a predetermined purchase application period. Period setting means and
After the purchase application period has elapsed, a provisional purchase price calculation means for calculating the provisional purchase price of the digital content based on the total revenue of the digital content and the desired number of purchases of the digital content, and
A purchase cancellation period setting means for displaying information on the calculated provisional purchase price of digital contents on the display screen of the user terminal together with a predetermined purchase cancellation period.
A final purchase price calculation means for calculating the final purchase price of the digital content based on the total revenue of the digital content and the desired number of purchases of the digital content after the purchase cancellation period has elapsed.
A non-fungible token management system comprising a purchase means for performing a purchase process of the digital content after the lapse of the purchase cancellation period based on the calculated final purchase price of the digital content. Based on the issuance conditions of the non-fungible token corresponding to the digital content recorded in the blockchain, the ownership of the non-fungible token managed by the first address on the blockchain is transferred to the transfer destination. A user who wishes to trade the digital content with the legal right to transfer to the second address on the blockchain or to issue the non-fungible token to the second address based on the issuance conditions. The non-fungible token ownership transfer guarantee information granting means for granting the non-fungible token ownership transfer guarantee information to the user account that identifies the user,
The first method of recording information about the digital content corresponding to the non-fungible token in a storage means different from the blockchain based on the non-fungible token ownership transfer guarantee information at the time of trading the digital content. Information registration method and
A purchase request information acquisition means for acquiring purchase request information of digital contents corresponding to a non-fungible token owned by the user and managed by the first address from a user terminal used by the user.
A means for calculating the total revenue, which calculates the total revenue of the digital content at a predetermined date and time based on the revenue information from the transaction of the digital content.
A purchase application that displays information on the calculated total revenue of the digital content on the display screen of the user terminal and prompts the user whether or not he / she wants to purchase the digital content by setting a predetermined purchase application period. Period setting means and
After the purchase application period has elapsed, a provisional purchase price calculation means for calculating the provisional purchase price of the digital content based on the total revenue of the digital content and the desired number of purchases of the digital content, and
A purchase cancellation period setting means for displaying information on the calculated provisional purchase price of digital contents on the display screen of the user terminal together with a predetermined purchase cancellation period.
A final purchase price calculation means for calculating the final purchase price of the digital content based on the total revenue of the digital content and the desired number of purchases of the digital content after the purchase cancellation period has elapsed.
A non-fungible token management system comprising a purchase means for performing a purchase process of the digital content after the lapse of the purchase cancellation period based on the calculated final purchase price of the digital content. The ownership transfer request information of the non-fungible token is acquired from the user terminal having the user account to which the non-fungible token ownership transfer guarantee information is given, and the user designates the non-fungible token from the first address. A transfer means for transferring ownership of the non-fungible token to the second address,
The non-fungible token according to claim 6, further comprising a second information registration means for recording the transfer of ownership of the non-fungible token from the first address to the second address on the blockchain. Management system. The ownership transfer request information of the non-fungible token is acquired from the user terminal having the user account to which the non-fungible token ownership transfer guarantee information is given, and the user designates the non-fungible token from the first address. The non-fungible token management system according to claim 6, further comprising a non-fungible token ownership transfer confirmation means for confirming that the ownership of the non-fungible token has been transferred to the second address. The non-fungible token management system according to any one of claims 6 to 8, further comprising a selling price adjusting means for adjusting the selling price of the digital content according to the transaction volume of the digital content. Ranking between works based on the total number of digital contents owned by all users for each work related to the digital contents, and / or the number of digital contents owned by each user for each work. The non-substitutable token management system according to any one of claims 1 to 9, further comprising an evaluation information creating means for ranking users for each of the works. Acquires the destruction request information of the digital content owned by the user and corresponding to the non-fungible token managed by the first address, and corresponds to the digital content to be destroyed from the first address. A means of sending non-fungible tokens to a third address on the blockchain,
Based on the number of the destroyed digital contents, the works related to the destroyed digital contents are ranked among the works and / or the works related to the destroyed digital contents have the destroyed digital contents. The non-substitutable token management system according to any one of claims 1 to 10, further comprising an evaluation information creating means for ranking between users.

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