JP7519519B1 - Information processing device and information processing method - Google Patents

Abstract

[Problem] To provide an information processing device and method for processing information related to tokens stored on a blockchain. [Solution] In an information processing system S, an information processing device 1 has a token acquisition unit 133 that acquires a unique token that a first user holds on a first blockchain and indicates the characteristics of the first user, a condition acquisition unit 134 that acquires transfer conditions associated with a received token that the first user wishes to transfer from a second blockchain that associates and stores a received token indicating a right to receive a product or service with a transfer condition that varies according to the unique token indicating the characteristics of the transfer destination user in order to transfer the received token between users, and a determination unit 135 that determines an application condition to be applied when transferring the received token from a second user holding the received token to the first user based on the relationship between the unique token of the first user and the transfer condition. [Selected Figure] Figure 2

Description

The present invention relates to an information processing device and an information processing method for processing information related to tokens stored on a blockchain.

Patent document 1 describes a technology for trading tokens on a blockchain by transferring coins, which are electronic currency, in exchange for transferring a token (e.g., an electricity token) containing specified content.

JP 2022-167763 A

A token issuer may transfer a token to a user with certain characteristics under certain conditions (discount sale, priority sale, etc.). Previously, when tokens were allowed to be freely transferred between users, there was a problem in that the token issuer could not impose conditions for transferring tokens between users.

The present invention has been made in consideration of these points, and aims to make it possible to impose conditions on the transfer of tokens stored on the blockchain between users.

The information processing device of the first aspect of the present invention has a token acquisition unit that acquires a unique token that is a unique token held by a first user on a first blockchain and that indicates the characteristics of the first user and is issued by a specified issuer; a condition acquisition unit that acquires the transfer conditions associated with the received token that the first user wishes to transfer from a second blockchain that associates and stores a received token that indicates the right to receive a product or service and a transfer condition for transferring the received token between users, the transfer condition varying depending on the unique token that indicates the characteristics of the transfer destination user; and a determination unit that determines the application conditions to be applied when transferring the received token from a second user who holds the received token to the first user based on the relationship between the unique token of the first user acquired by the token acquisition unit and the transfer conditions.

The information processing device may further include a token management unit that, in response to receiving a request from the issuer of the received token to the second user for issuance of the received token, causes the second blockchain to issue the received token associated with the transfer conditions.

The transfer conditions may indicate whether the receiving token can be transferred to the first user depending on whether the first user holds a particular unique token.

The transfer condition may indicate that the receiving token may be transferred to the first user on the condition that the first user holds a unique token indicating that the first user has a specified characteristic or a unique token issued by a specified issuer.

The transfer condition may indicate that the receiving token may be transferred to the first user on the condition that the first user holds a unique token issued by a specified institution indicating that the first user has been identified.

The transfer condition may indicate a price for transferring the receiving token to the first user, which may differ depending on whether the first user holds a particular unique token.

The transfer conditions may indicate that part or all of the difference between the price at which the second user receives the transfer of the receiving token and the price for transferring the receiving token to the first user will be returned to the issuer of the receiving token.

The determination unit may determine the application conditions based on the relationship between the unique token of the first user and the unique token of the second user and the transfer conditions.

The information processing device may further include a reception unit that receives, from the first user, a designation of a disclosure token, which is a unique token to be disclosed to others, from among the unique tokens of the first user, and the token acquisition unit acquires the disclosure token designated by the first user, and the determination unit may determine the application condition based on the relationship between the disclosure token acquired by the token acquisition unit and the transfer condition.

The information processing device may further include a reception unit that receives, from the first user, a designation of a disclosure partner to whom the unique token is to be disclosed, and the determination unit may determine the application condition based on the relationship between the unique token of the first user and the transfer condition, on the condition that the second user is the disclosure partner.

The information processing device may further include a display control unit that displays the application conditions on an information terminal used by the first user before the first user receives the transfer of the received token from the second user.

The issuer of the first user's unique token may be different from the issuer of the received token.

The token acquisition unit acquires a unique token that is held on the first blockchain by the second user who holds the received token and that indicates characteristics of the second user issued by a specified issuer, and the information processing device may further have a token management unit that prohibits the second user from using the received token on condition that the second user's unique token does not satisfy a usage condition previously associated with the received token.

The holder of the unique token in the first blockchain is the first user, and changing the holder of the unique token from the first user to another user on the first blockchain may not be permitted.

The information processing method of the second aspect of the present invention includes the steps of: acquiring a unique token that is a unique token held by a first user on a first blockchain and that indicates the characteristics of the first user, the unique token having been issued by a specified issuer; acquiring transfer conditions associated with the received token that the first user wishes to transfer from a second blockchain that associates and stores a received token indicating the right to receive a product or service with a transfer condition for transferring the received token between users, the transfer condition varying depending on the unique token indicating the characteristics of the transfer destination user; and determining application conditions to be applied when transferring the received token from a second user who holds the received token to the first user, based on the relationship between the unique token of the first user acquired in the step of acquiring the unique token and the transfer conditions.

The present invention has the advantage that it is possible to impose conditions on the transfer of tokens stored on the blockchain between users.

1 is a schematic diagram of an information processing system according to an embodiment. 1 is a block diagram of an information processing system according to an embodiment. FIG. 1 is a schematic diagram for explaining a unique token indicating a user's characteristics. 13 is a schematic diagram of an information terminal displaying a disclosure condition designation screen for a transfer destination user to designate disclosure conditions. FIG. 11 is a schematic diagram for explaining a process in which an information processing device issues a received token; FIG. 11 is a schematic diagram for explaining a process in which an information processing device determines an application condition. FIG. 11 is a schematic diagram of an information terminal displaying an application condition display screen for displaying application conditions. FIG. 11 is a schematic diagram for explaining a process in which an information processing device transfers a received token; FIG. 11 is a schematic diagram for explaining a process in which an information processing device allows a user to use a received token; FIG. FIG. 1 is a flowchart illustrating an exemplary information processing method executed by an information processing device according to an embodiment.

[Overview of Information Processing System S]
1 is a schematic diagram of an information processing system S according to this embodiment. The information processing system S includes an information processing device 1 and one or more information terminals 2. The information processing system S may also include other devices such as servers and terminals.

The information processing device 1 is a computer that performs processing related to information stored on the blockchain. The blockchain is constructed in the memory unit of the information processing device 1 or in the memory unit of a device different from the information processing device 1. The blockchain is constructed in the memory units of multiple devices, and the information processing device 1 may be any one of the multiple devices.

The information stored on the blockchain includes, for example, a unique token that indicates the characteristics of a user, and a receipt token that indicates the user's right to receive goods or services. The unique token is information that indicates the characteristics of the user who holds the unique token, such as a SoulBound Token (SBT). The user's characteristics include, for example, the user's personal information, the user's behavioral history, etc. The unique token is not permitted to be transferred between users on the blockchain, so it is guaranteed that it indicates the characteristics of the user who holds it.

A receiving token is information indicating the right of a user who is the holder of the receiving token to receive a specified product or service. A receiving token is, for example, information that associates information indicating a product or service to be provided to a user with information indicating whether the user has received the product or service.

A receipt token is issued on the blockchain by a specified issuer, and one of the users is stored as the holder. By presenting the receipt token to a specified store, the user can receive the goods or services indicated by the receipt token from that store.

The received token is associated in advance with transfer conditions, which are conditions for transferring the received token between users on the blockchain. The transfer conditions are conditions that vary depending on the unique token that indicates the characteristics of the user to whom the received token is to be transferred. The transfer conditions indicate, for example, that the received token can be transferred to the destination user on the condition that the destination user holds a unique token indicating that the destination user has a specified characteristic. The information processing device 1 controls whether to permit the transfer of the received token, or controls the price for the transfer of the received token, in accordance with the transfer conditions associated with the received token on the blockchain.

The unique token and the received token are stored in association with user identification information (user ID: Identifier) for identifying the user who holds the unique token, for example, by a blockchain on one or more storage units on the network. The blockchain includes multiple blocks of data, and each block includes one or more transactions indicating that the holder of the unique token or the received token has been transferred. Each block in the blockchain includes a hash value generated according to a specific rule, and the accuracy of the entire blockchain is guaranteed by checking the consistency of the hash values between blocks.

In this embodiment, the unique token is stored in a first blockchain and the received token is stored in a second blockchain. The first blockchain and the second blockchain may be a single blockchain that stores both the unique token and the received token.

The information terminal 2 is a computer used by an issuer or a user. An issuer is a person or organization that issues a unique token or a received token. A user is a person or organization that can hold a token on the blockchain. When a received token is transferred between users, the user to whom the received token is transferred is called the transfer destination user (first user), and the user from whom the received token is transferred is called the transfer source user (second user). After the received token is transferred from the transfer source user to the transfer destination user, the transfer destination user can become the new transfer source user.

The information terminal 2 is, for example, a smartphone, a tablet terminal, or a personal computer. The information terminal 2 has an operation unit such as a touch panel or a keyboard for receiving operations, and a display unit such as a liquid crystal display for displaying information. The information terminal 2 is capable of communicating with the information processing device 1 via a network.

An overview of the processing executed by the information processing system S according to this embodiment is described below. In response to a transfer destination user's desire to transfer a received token, the information processing device 1 acquires a unique token indicating the characteristics of the transfer destination user from the first blockchain. The information processing device 1 acquires transfer conditions associated with the received token from the second blockchain.

The information processing device 1 determines the application conditions to be applied when transferring the received token from the transfer source user to the transfer destination user based on the relationship between the unique token of the transfer destination user and the transfer conditions associated with the received token. The information processing device 1 causes the blockchain to change the holder of the received token, or does not cause the blockchain to change the holder of the received token, in accordance with the determined application conditions.

In this way, the information processing system S transfers the received token stored in the blockchain from the transfer source user to the transfer destination user based on the relationship between the unique token indicating the characteristics of the transfer destination user and the transfer conditions previously associated with the received token. This allows the information processing system S to impose conditions for transferring tokens stored on the blockchain between users.

[Configuration of information processing system S]
FIG. 2 is a block diagram of an information processing system S according to this embodiment. In FIG. 2, the arrows indicate the main data flows, and there may be data flows other than those shown in FIG. 2. In FIG. 2, each block indicates a functional configuration, not a hardware (device) configuration. Therefore, the blocks shown in FIG. 2 may be implemented in a single device, or may be implemented separately in multiple devices. Data may be exchanged between blocks via any means, such as a data bus, a network, or a portable storage medium.

The information processing device 1 has a communication unit 11, a storage unit 12, and a control unit 13. The information processing device 1 may be configured by connecting two or more physically separate devices by wire or wirelessly. The information processing device 1 may also be configured by a cloud, which is a collection of computer resources.

The communication unit 11 has a communication controller for transmitting and receiving data to and from the information terminal 2 via the network. The communication unit 11 notifies the control unit 13 of data received from the information terminal 2 via the network. The communication unit 11 also transmits data output from the control unit 13 to the information terminal 2 via the network.

The storage unit 12 is a storage medium including a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive, etc. The storage unit 12 stores in advance the programs to be executed by the control unit 13. The storage unit 12 may be provided outside the information processing device 1, in which case data may be exchanged between the storage unit 12 and the control unit 13 via a network.

The control unit 13 has a reception unit 131, a token management unit 132, a token acquisition unit 133, a condition acquisition unit 134, a determination unit 135, and a display control unit 136. The control unit 13 is a processor such as a CPU (Central Processing Unit), and functions as the reception unit 131, the token management unit 132, the token acquisition unit 133, the condition acquisition unit 134, the determination unit 135, and the display control unit 136 by executing a program stored in the storage unit 12.

The processing executed by the information processing system S will be described in detail below. First, the unique token indicating the characteristics of a user will be described. The unique token is information indicating the characteristics of the user who possesses the unique token.

The first blockchain prestores a unique token indicating the characteristics of each user. The user's characteristics include personal information of the user, such as gender, age, address, place of origin, occupation, memberships, family structure, and assets. The user's characteristics may also include the user's behavioral history, such as travel history, product purchase history, service contract history, and group membership history. The user's characteristics may also include medical information, such as hospital visit history, medication history, and allergy history.

The user characteristics may also include information indicating that the user has been identified. Having the user's identity verified means, for example, that a specified institution has verified the identity of the user by having the user present a certificate such as a driver's license, My Number card, or health insurance card. It is desirable for the issuer of the unique token indicating that the user's identity has been verified to be the institution that performed the identity verification for the user.

Figure 3 is a schematic diagram for explaining a unique token indicating a user's characteristics. The unique token is, for example, information that associates the issuer of the unique token with the type (also called item) of the user's characteristic and the content (also called value) of the user's characteristic. The unique token may also include the date and time of issuance of the unique token. Each user holds one or more unique tokens issued by one or more issuers on the first blockchain.

The issuer of the unique token uses the information terminal 2 to send a request for issuing a unique token to the information processing device 1 or other device. The issuance request includes the type and content of the user's characteristics and the user ID of the user. The user's characteristics are set, for example, based on information (survey, etc.) entered by the user on the information terminal 2, or information (contract information, etc.) provided by a business that manages user information. In response to the issuance request received from the issuer, the information processing device 1 or other device issues a unique token indicating the user's characteristics to the first blockchain, with the user as the holder.

The information processing device 1 or another device transmits, for example, an issuance instruction to the first blockchain to cause the first blockchain to issue a unique token that associates issuer identification information (issuer ID) for identifying the issuer that made the issuance request with the type and content of the user characteristics indicated in the issuance request, in association with the user ID indicated in the issuance request. The first blockchain generates and stores the unique token in association with the user ID in accordance with the issuance instruction transmitted by the information processing device 1 or another device. As a result, the unique token indicating the user's characteristics is stored in the first blockchain with the user as the holder.

A unique token that indicates the characteristics of a user is stored in the first blockchain with that user as the holder. The user holds a unique token that indicates the characteristics of that user on the first blockchain. In the first blockchain, it is not permitted to change the holder of a unique token that indicates the characteristics of a user from that user to another user. In other words, unique tokens are not transferable between users. This ensures that the unique token indicates the characteristics of the user who holds it.

Next, the disclosure conditions for disclosing a user's unique token to others will be described. In the information processing device 1, the reception unit 131 receives, from the transfer destination user, a specification of the disclosure conditions for disclosing the unique token owned by the transfer destination user to others. The reception unit 131 transmits, for example, display information for displaying a disclosure conditions specification screen for the transfer destination user to specify the disclosure conditions to the information terminal 2 used by the transfer destination user. The information terminal 2 displays the disclosure conditions specification screen in accordance with the display information received from the information processing device 1.

Figure 4 is a schematic diagram of an information terminal 2 displaying a disclosure condition designation screen for a transfer destination user to designate disclosure conditions. The disclosure condition designation screen includes, for example, an area for designating a disclosure partner to whom the unique token is to be disclosed, and an area for designating a disclosure token, which is a unique token to be disclosed to others. The area for designating a disclosure partner includes, for example, options representing one or more individuals or organizations that may be the transfer source user of the received token. The area for designating a disclosure token includes, for example, options representing one or more types of unique tokens held by the transfer destination user.

In response to a predetermined operation (e.g., selection of the send button) by the transfer destination user, the information terminal 2 transmits information indicating the disclosure conditions, including the disclosure partner and disclosure token specified on the disclosure condition specification screen, to the information processing device 1. In the information processing device 1, the reception unit 131 accepts the disclosure conditions indicated by the information received from the information terminal 2, and stores the accepted disclosure conditions in the storage unit 12 in association with the user ID of the transfer destination user. The reception unit 131 may also treat all partners as disclosure partners and all unique tokens as disclosure tokens without accepting specification of disclosure conditions from the transfer destination user.

Next, the process by which the information processing device 1 issues a receiving token will be described. A receiving token is information indicating the right of a user who is the holder of the receiving token to receive a specified product or service. FIG. 5 is a schematic diagram for explaining the process by which the information processing device 1 issues a receiving token.

The issuer of the received token uses the information terminal 2 to send a request to issue the received token to the information processing device 1. The issuer of the received token may be different from the issuer of the unique token of the transfer destination user. The issuer of the received token may also be the same as the issuer of the unique token of the transfer destination user.

In the information processing device 1, the reception unit 131 receives a request to issue a received token from an issuer. Here, an example is described in which the issuer issues a received token to a user who will later become the source user. The issuance request includes information indicating the goods or services to be provided by the received token, transfer conditions for transferring the received token between users, and the user ID of the source user.

The information indicating the goods or services is information indicating the contents of the goods or services that the user will receive from a specific store by presenting the receipt token to the store. The information indicating the goods or services includes, for example, the type of goods or services (such as product name) that the user will receive, and the number or amount of the goods or services.

The transfer conditions are conditions that vary according to the unique token indicating the characteristics of the transfer destination user when the receiving token is transferred from the transfer source user to the transfer destination user. The transfer conditions vary either the transferability of the receiving token or the price for transferring the receiving token according to the unique token indicating the characteristics of the transfer destination user. For example, when the transfer destination user has a specific unique token, the transfer conditions may indicate that the receiving token is transferable and a different price, or that the receiving token is transferable and the same price, or that the receiving token is not transferable. In addition, the transfer conditions may vary at least one of the following according to the unique token indicating the characteristics of the transfer destination user: the compensation returned to the issuer of the receiving token when transferring the receiving token, the content of the goods or services provided to the user, the period during which the user can receive the goods or services, the additional cost required for the user to receive the goods or services, and the benefits granted when the user receives the goods or services.

The transfer condition may indicate, for example, whether the receiving token can be transferred to the transfer destination user depending on whether the transfer destination user holds a specific unique token. In this case, the transfer condition indicates, for example, that the receiving token can be transferred to the transfer destination user if the transfer destination user holds a unique token indicating that it has a specific characteristic or a unique token issued by a specific issuer, and indicates that the receiving token is not transferable if not. This allows the information processing system S to switch whether the receiving token can be transferred depending on whether the transfer destination user holds a specific unique token.

The transfer conditions may indicate, for example, that the received token can be transferred to the transfer destination user if the transfer destination user holds a unique token issued by a specified institution indicating that the user has been authenticated, and that the received token cannot be transferred if the transfer destination user does not hold a unique token issued by a specified institution indicating that the user has been authenticated. This allows the information processing system S to switch whether or not the received token can be transferred depending on whether or not the transfer destination user has been authenticated.

The transfer condition may indicate, for example, that the received token can be transferred to the transfer destination user if the issuance date and time of the unique token held by the transfer destination user indicating that the user has been identified is within a specified period, and that the received token cannot be transferred otherwise. This allows the information processing system S to switch whether or not the received token can be transferred depending on whether the user has been identified within the specified period.

The transfer conditions may also be, for example, multiple unique tokens indicating that identity verification has been completed, and may indicate that the received token can be transferred to the transfer destination user if the transfer destination user holds multiple unique tokens issued by multiple institutions, and may indicate that the token cannot be transferred if this is not the case. This allows the information processing system S to switch whether or not the received token can be transferred depending on whether the transfer destination user has been identified by multiple institutions.

The transfer condition may be, for example, a price for transferring the receiving token to the transferee user, and may indicate a different price depending on whether the transferee user holds a specific unique token. In this case, the transfer condition may, for example, set the price lower when the transferee user holds a unique token indicating that the unique token has a specified characteristic or a unique token issued by a specified issuer than the price when the transferee user does not hold the unique token. This allows the information processing system S to apply different prices for transferring the receiving token depending on whether the transferee user holds a specific unique token.

The transfer conditions may, for example, indicate that part or all of the difference between the price at which the transfer source user receives the received token from the issuer or another user and the price for transferring the received token to the transfer destination user will be returned to the issuer of the received token. This allows the information processing system S to return the difference to the issuer or previous holder of the received token when a difference occurs between the price at which the transfer source user acquired the received token and the price for transferring it to the transfer destination user.

The transfer condition may be a condition that varies depending on the relationship between the unique token indicating the characteristics of the transfer destination user and the unique token indicating the characteristics of the transfer source user. In this case, the transfer condition indicates that the received token can be transferred to the transfer destination user when the transfer destination user and the transfer source user hold a unique token indicating that they have the same characteristics or a unique token issued by the same issuer, and indicates that the token cannot be transferred when they do not. In addition, the transfer condition may be, for example, a price lower when the transfer destination user and the transfer source user hold a unique token indicating that they have the same characteristics or a unique token issued by the same issuer than a price when the transfer destination user and the transfer source user do not hold the unique token. This allows the information processing system S to change the conditions for transferring the received token based on the relationship between the transfer destination user and the transfer source user.

The token management unit 132 transmits an issuance instruction to the second blockchain to have the second blockchain issue a received token that associates information indicating the goods or services indicated in the issuance request accepted by the reception unit 131 with the transfer conditions indicated in the issuance request accepted by the reception unit 131, and associates the received token with the user ID of the transfer source user indicated in the issuance request.

The second blockchain generates and stores the received token in association with the user ID of the transfer source user in accordance with the issuance instruction sent by the information processing device 1. The received token may further include information indicating whether the received token has been used (whether the user has received a product or service). As a result, the received token indicating the user's right to receive a product or service is stored in the second blockchain with the transfer source user as the holder.

Next, a process for determining the application conditions to be applied when the information processing device 1 transfers a received token from a transfer source user to a transfer destination user will be described. FIG. 6 is a schematic diagram for explaining the process for determining the application conditions by the information processing device 1.

In the information processing device 1, the reception unit 131 receives, from the transfer destination user, a designation of a receiving token desired to be transferred. For example, in response to an operation performed by the transfer destination user to designate one of one or more receiving tokens held by one or more transfer source users, the information terminal 2 used by the transfer destination user transmits information indicating the designated receiving token together with the user ID of the transfer destination user to the information processing device 1. The reception unit 131 accepts the receiving token indicated by the information transmitted by the information terminal 2 as the receiving token the transfer destination user wishes to transfer.

The token acquisition unit 133 acquires the disclosure conditions associated with the user ID of the transfer destination user in the memory unit 12 for the transfer destination user to disclose the unique token to others. The token acquisition unit 133 acquires, as a disclosure token, a unique token indicated by the disclosure conditions from among one or more unique tokens associated with the user ID of the transfer destination user on the first blockchain. If a specific disclosure token is not specified by the transfer destination user, the token acquisition unit 133 may treat all unique tokens held by the transfer destination user as disclosure tokens.

The condition acquisition unit 134 acquires, from the second blockchain, the transfer conditions associated with the received token that the transfer destination user wishes to transfer. The determination unit 135 determines the applicable conditions to be applied when transferring the received token from the transfer source user to the transfer destination user, based on the relationship between the disclosed token (unique token) of the transfer destination user acquired by the token acquisition unit 133 and the transfer conditions acquired by the condition acquisition unit 134.

The application conditions are conditions that are applied when transferring the receiving token to the transfer destination user, and are determined based on the relationship between the various transfer conditions described above and the disclosed token of the transfer destination user. The application conditions indicate, for example, whether the receiving token can be transferred or the price for transferring the receiving token. The application conditions may also indicate at least one of the following: the compensation to be returned to the issuer of the receiving token when transferring the receiving token, the content of the goods or services provided to the user, the period during which the user can receive the goods or services, the additional costs required for the user to receive the goods or services, and the benefits granted when the user receives the goods or services.

The determination unit 135 determines the application condition for transferring the receiving token according to the relationship between the transfer condition and the disclosure token of the transfer destination user. When the transfer destination user holds multiple disclosure tokens, the determination unit 135 may determine the application condition for each of the multiple disclosure tokens according to the disclosure token (i.e., the application condition when any one of the disclosure tokens is disclosed). The determination unit 135 may determine the application condition based on the relationship between the transfer condition and the disclosure token of the transfer destination user and the unique token of the transfer source user.

When the disclosure conditions acquired by the condition acquisition unit 134 indicate a specific disclosure partner, the determination unit 135 may determine the applicable conditions based on the relationship between the disclosure token of the transfer destination user and the transfer conditions if the source user is the disclosure partner, and may determine the applicable conditions without using the disclosure token of the transfer destination user if not. This allows the information processing system S to reflect the unique token of the transfer destination user in the conditions applied when transferring the received token, on the condition that the source user is the disclosure partner designated by the transfer destination user.

The display control unit 136 transmits display information for displaying the application conditions determined by the determination unit 135 to the information terminal 2 used by the transfer destination user before the transfer destination user receives the transfer of the received token from the transfer source user. The information terminal 2 displays an application condition display screen for displaying the application conditions according to the display information transmitted by the information processing device 1.

Figure 7 is a schematic diagram of an information terminal 2 displaying an application condition display screen for displaying application conditions. The application condition display screen includes, for example, one or more application conditions determined by the determination unit 135, and an area for selecting the application condition to be actually applied when transferring the received token. The area for selecting the application condition includes a button for selecting one or more of the application conditions. This allows the transfer destination user to check the application conditions for each unique token to be disclosed to others and select one of the application conditions before actually receiving the transfer of the received token.

Next, the process in which the information processing device 1 transfers the received token from the transfer source user to the transfer destination user will be described. FIG. 8 is a schematic diagram for explaining the process in which the information processing device 1 transfers the received token.

In response to a predetermined operation (e.g., selection of the send button) by the transfer destination user, the information terminal 2 transmits a transfer request to the information processing device 1 to transfer the received token. The transfer request includes, for example, information indicating any of the application conditions selected on the application condition designation screen. In the information processing device 1, the reception unit 131 receives the transfer request transmitted by the information terminal 2. The token management unit 132 executes processing to transfer subsequent received tokens using the application conditions indicated in the transfer request received by the reception unit 131.

The token management unit 132 may also execute a process of transferring subsequent received tokens following the determination of the application conditions by the determination unit 135, without displaying the application condition display screen on the information terminal 2. When the determination unit 135 determines multiple application conditions, the token management unit 132 may select one application condition (e.g., the application condition with the lowest price for transfer) from the multiple application conditions in accordance with a predetermined rule, and execute a process of transferring subsequent received tokens using the selected application condition.

The token management unit 132 transfers the received token from the transfer source user to the transfer destination user using the application conditions determined by the determination unit 135. For example, when the application conditions indicate that the token is transferable, the token management unit 132 transmits a change instruction to the second blockchain to change the holder of the received token from the transfer source user to the transfer destination user, and when the application conditions indicate that the token is not transferable, the token management unit 132 does not transmit a change instruction to the second blockchain. The second blockchain stores information (e.g., a transaction) that changes the holder of the received token from the transfer source user to the transfer destination user in accordance with the change instruction transmitted by the information processing device 1.

For example, when the applicable condition indicates a price for transferring the received token, the token management unit 132 sends a change instruction to the second blockchain to change the holder of the received token from the source user to the destination user and to change the holder of the consideration corresponding to the price (e.g., cryptocurrency) from the destination user to the source user. In accordance with the change instruction sent by the information processing device 1, the second blockchain stores information to change the holder of the received token from the source user to the destination user and stores information to change the holder of the consideration from the destination user to the source user.

When the applicable condition indicates that the received token is to be returned to the issuer of the received token, the token management unit 132 may send a change instruction to the second blockchain to change the holder of the consideration corresponding to part or all of the difference between the price at which the transfer source user received the received token from the issuer or another user and the price for transferring the received token to the transfer destination user from the transfer destination user to the issuer of the received token. The second blockchain stores information to change the holder of the consideration from the transfer destination user to the issuer of the received token in accordance with the change instruction sent by the information processing device 1.

In this way, the information processing system S transfers the received token from the transfer source user to the transfer destination user based on the relationship between the unique token indicating the characteristics of the transfer destination user and the transfer conditions previously associated with the received token. This allows the information processing system S to impose conditions for transferring the received token between users.

Next, a process in which the information processing device 1 allows a user to use the received token will be described. FIG. 9 is a schematic diagram for explaining a process in which the information processing device 1 allows a user to use the received token. Here, an example in which the transfer source user uses the received token will be described, but the same applies when the transfer destination user uses the received token after receiving the transfer of the received token.

In the information processing device 1, the reception unit 131 receives, from the source user, a designation of a receiving token that the source user wishes to use. For example, in response to an operation by the source user to designate one of one or more receiving tokens held by the source user, the information terminal 2 used by the source user transmits a usage request indicating the designated receiving token together with the user ID of the source user to the information processing device 1.

In the information processing device 1, the reception unit 131 receives the received token indicated in the usage request sent by the information terminal 2 as the received token that the transfer source user wishes to use. The token acquisition unit 133 acquires one or more unique tokens associated with the user ID of the transfer source user on the first blockchain.

The condition acquisition unit 134 acquires from the second blockchain the usage conditions that are pre-associated with the received token that the transfer source user wishes to use. The usage conditions are conditions for the user to use the received token, are set in advance by the issuer of the received token, and are stored in the storage unit 12. The usage conditions are, for example, conditions that are the basis of the transfer conditions, and include the transfer conditions. Furthermore, the usage conditions may be conditions different from the transfer conditions.

If the unique token of the transfer source user acquired by the token acquisition unit 133 does not satisfy the usage conditions acquired by the condition acquisition unit 134, the token management unit 132 prohibits the transfer source user from using the received token, and if the usage conditions are satisfied, the token management unit 132 permits the transfer source user to use the received token.

The display control unit 136 causes the information terminal 2 associated with the store to display information indicating that the token management unit 132 has permitted the transfer source user to use the received token. The store employee provides the transfer source user with the goods or services indicated by the received token in accordance with the information displayed on the information terminal 2 associated with the store. Thereafter, the token management unit 132 may store information indicating that the received token has been used in the second blockchain.

In response to prohibiting the transfer source user from using the received token, the token management unit 132 may refund to the transfer source user the consideration paid by the transfer source user to receive the transfer of the received token. In this case, the token management unit 132, for example, sends a change instruction to the second blockchain to change the holder of the consideration (e.g., cryptocurrency) corresponding to the price at which the transfer source user received the transfer of the received token from the issuer or another user from the issuer or another user to the transfer source user. The second blockchain stores information to change the holder of the consideration from the issuer or another user to the transfer source user in accordance with the change instruction sent by the information processing device 1. In this way, the information processing system S can enable the transfer source user to receive a refund for the consideration of the received token even if the transfer source user is unable to use the received token after possessing it.

[Flow of information processing method]
10 is a diagram showing a flowchart of an exemplary information processing method executed by the information processing device 1 according to the present embodiment. The reception unit 131 receives a designation of a reception token that the transfer destination user wishes to transfer (S11). The reception unit 131 receives information indicating the reception token that the transfer destination user wishes to transfer from, for example, the information terminal 2 used by the transfer destination user.

The token acquisition unit 133 acquires disclosure conditions for the transfer destination user to disclose the unique token to others, which are associated with the transfer destination user's user ID in the memory unit 12 (S12).

The token acquisition unit 133 acquires, as a disclosure token, a unique token indicated by the disclosure conditions from among one or more unique tokens associated with the user ID of the transfer destination user on the first blockchain (S13). If a specific disclosure token is not specified by the transfer destination user, the token acquisition unit 133 may treat all unique tokens held by the transfer destination user as disclosure tokens.

The condition acquisition unit 134 acquires from the second blockchain the transfer conditions associated with the received token that the transfer destination user wishes to transfer (S14). The determination unit 135 determines the applicable conditions to be applied when transferring the received token from the transfer source user to the transfer destination user based on the relationship between the disclosed token (unique token) of the transfer destination user acquired by the token acquisition unit 133 and the transfer conditions acquired by the condition acquisition unit 134 (S15).

The display control unit 136 causes the information terminal 2 used by the transfer destination user to display the application conditions determined by the determination unit 135 before the transfer destination user receives the transfer of the received token from the transfer source user (S16). For example, the display control unit 136 transmits display information about the application conditions to the information terminal 2, and the information terminal 2 displays the application conditions according to the display information transmitted by the information processing device 1.

The reception unit 131 receives a transfer request to transfer the received token from the transfer destination user (S17). The reception unit 131 receives a transfer request indicating any of the application conditions selected by the transfer destination user, for example, from the information terminal 2 used by the transfer destination user.

The token management unit 132 transfers the received token from the transfer source user to the transfer destination user on the second blockchain using the application conditions determined by the determination unit 135 and indicated in the transfer request accepted by the acceptance unit 131 (S18).

[Effects of the embodiment]
According to the information processing system S of this embodiment, the information processing device 1 switches whether or not to transfer the received token from the transfer source user to the transfer destination user, or changes the price for transferring the received token, based on the relationship between the unique token indicating the characteristics of the transfer destination user and the transfer conditions previously associated with the received token. This allows the information processing system S to impose conditions for transferring the received token stored on the blockchain between users.

Furthermore, this invention will make it possible to contribute to Goal 9 of the United Nations' Sustainable Development Goals (SDGs), which is "Build resilient infrastructure, promote inclusive and sustainable industrialization, and promote innovation."

Although the present invention has been described above using embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the invention. For example, all or part of the device can be configured by distributing or integrating functionally or physically in any unit. In addition, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effect of the new embodiment resulting from the combination also has the effect of the original embodiment.

S Information processing system 1 Information processing device 11 Communication unit 12 Storage unit 13 Control unit 131 Reception unit 132 Token management unit 133 Token acquisition unit 134 Condition acquisition unit 135 Determination unit 136 Display control unit 2 Information terminal

Claims (15)

A token acquisition unit that acquires a unique token that is a token held by a first user on a first blockchain and indicates a characteristic of the first user issued by a predetermined issuer;
A condition acquisition unit acquires, from a second blockchain that associates and stores a receiving token indicating a right to receive a product or service with a transfer condition for determining whether the receiving token can be transferred between users or a price for transferring the receiving token, the transfer condition varying depending on a unique token indicating the characteristics of the transfer destination user; and
A determination unit that determines an application condition to be applied to a process of transferring the receiving token from a second user who holds the receiving token to the first user based on a relationship between the unique token of the first user acquired by the token acquisition unit and the transfer condition;
A token manager that transfers the received token from the second user to the first user on the second blockchain in accordance with the applicable conditions;
An information processing device having the above configuration. The token management unit issues the received token associated with the transfer condition to the second blockchain in response to receiving an issuance request for the received token from the issuer of the received token to the second user .
The information processing device according to claim 1 . The transfer condition indicates whether the receiving token can be transferred to the first user depending on whether the first user holds a specific unique token.
3. The information processing device according to claim 1 or 2. The transfer condition indicates that the receiving token can be transferred to the first user on the condition that the first user holds a unique token indicating that the first user has a predetermined characteristic or a unique token issued by a predetermined issuer.
The information processing device according to claim 3 . The transfer condition indicates that the receiving token can be transferred to the first user on the condition that the first user holds a unique token issued by a predetermined institution indicating that the first user has been authenticated.
The information processing device according to claim 3 . The transfer condition indicates a price for transferring the receiving token to the first user, the price being different depending on whether the first user holds a specific unique token.
3. The information processing device according to claim 1 or 2. The transfer condition indicates that a part or all of the difference between the price at which the second user receives the transfer of the receiving token and the price for transferring the receiving token to the first user will be returned to the issuer of the receiving token.
The information processing device according to claim 6. The determination unit determines the application condition based on a relationship between the unique token of the first user and the unique token of the second user and the transfer condition.
3. The information processing device according to claim 1 or 2. The method further includes a reception unit that receives, from the first user, a designation of a disclosure token, which is a unique token to be disclosed to another person, from the unique tokens of the first user;
The token acquisition unit acquires the disclosure token designated by the first user,
The determination unit determines the application condition based on a relationship between the disclosure token acquired by the token acquisition unit and the transfer condition.
3. The information processing device according to claim 1 or 2. The method further includes a reception unit that receives, from the first user, a designation of a disclosure partner to which the unique token is to be disclosed,
The determination unit determines the application condition based on a relationship between the unique token of the first user and the transfer condition, on the condition that the second user is the disclosure partner.
3. The information processing device according to claim 1 or 2. The method further includes a display control unit that displays the application conditions on an information terminal used by the first user before the first user receives the transfer of the receiving token from the second user.
3. The information processing device according to claim 1 or 2. the issuer of the first user's unique token is different from the issuer of the receiving token;
3. The information processing device according to claim 1 or 2. The token acquisition unit acquires a unique token that is a token held on the first blockchain by the second user who holds the received token, the unique token being issued by a predetermined issuer and indicating a characteristic of the second user;
The token management unit prohibits the second user from using the received token on the condition that the unique token of the second user does not satisfy a usage condition previously associated with the received token .
The information processing device according to claim 1 . The holder of the unique token in the first blockchain is the first user, and changing the holder of the unique token from the first user to another user on the first blockchain is not permitted;
3. The information processing device according to claim 1 or 2. The processor executes
Obtaining a unique token that is a token held by a first user on a first blockchain, the unique token being issued by a given issuer and indicating a characteristic of the first user;
A step of acquiring transfer conditions associated with the received token that the first user wishes to transfer from a second blockchain that associates and stores a received token indicating a right to receive a product or service with transfer conditions for determining whether the received token can be transferred between users or the price for transferring the received token, the transfer conditions varying depending on a unique token indicating the characteristics of the transfer destination user;
A step of determining an application condition to be applied to a process of transferring the receiving token from a second user who holds the receiving token to the first user based on a relationship between the unique token of the first user acquired in the step of acquiring the unique token and the transfer condition;
transferring the receiving tokens from the second user to the first user on the second blockchain in accordance with the applicable conditions;
An information processing method comprising the steps of:

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