JP2025026788A - Apparatus, method and program for providing a camera application to an NFT holder - Google Patents

Abstract

An apparatus, method, and program for providing a camera application to an NFT holder are provided.
[Solution] In a system in which a mobile terminal used by an NFT holder communicates with a first device, a second device, a blockchain network, and a storage via an IP network, the method includes the mobile terminal receiving a module for a camera application, transmitting a request to connect a software wallet, receiving URLs of images linked to each of a plurality of NFTs associated with a public address managed by the wallet from a blockchain network in which the public address is recorded, acquiring a plurality of images by accessing the received plurality of URLs, and displaying at least some of the images on the camera application. In response to the holder of the NFT selecting one of the images, it becomes possible to capture video using the image as a camera frame.
[Selected figure] Figure 2

Description

The present invention relates to an apparatus, method, and program for providing a camera application to NFT holders.

NFTs (Non-Fungible Tokens) are being used in fields such as art and games as a means of giving scarcity to digital content, and because scarcity is technically guaranteed, they are also being used in a variety of services as a means of proving the rights of holders, such as memberships and admission tickets. As one example, the applicant is providing a service that promotes regional revitalization by adopting NFTs linked to digital art associated with local governments as gifts in return for hometown tax donations, making it possible to offer benefits to holders.

Though the use of NFTs is progressing, opportunities for holders to realize the benefits of owning NFTs are still limited.

The present invention was made in consideration of these problems, and its objective is to provide a device, method, or program therefor that gives NFT holders a new experience that can be obtained by holding those NFTs.

To achieve this objective, a first aspect of the present invention is a method for providing a camera application to a holder of one or more NFTs, comprising the steps of: a mobile terminal of the holder receiving a program for the camera application; connecting a software wallet selected by the holder to the camera application; receiving, after connecting the software wallet, one or more storage locations of one or more images linked to at least one of the one or more NFTs associated with the public address, from a blockchain network in which a public address selected by the holder is recorded, the public address being managed by the software wallet; acquiring the one or more images from the one or more storage locations; displaying at least one of the one or more images on the camera application; and enabling video capture using the image selected by the holder as a camera frame.

A second aspect of the present invention is the method of the first aspect, in which the mobile terminal is a smartphone.

A third aspect of the present invention is the method of the first or second aspect, in which the blockchain network is an EVM-compatible network.

A fourth aspect of the present invention is a method according to any one of the first to third aspects, wherein the one or more NFTs are issued using a contract address for the camera application.

A fifth aspect of the present invention is a method according to any one of the first to fourth aspects, in which the software wallet is a wallet selected by the holder.

A sixth aspect of the present invention is a method according to any one of the first to fifth aspects, in which the public address is an address selected by the holder.

A seventh aspect of the present invention is a method according to any one of the first to sixth aspects, in which the program is a module that the mobile terminal receives from the first device.

The eighth aspect of the present invention is the method of the seventh aspect, in which the connection of the software wallet is performed by sending a request to a second device, different from the first device, to connect the software wallet to the camera application.

A ninth aspect of the present invention is a method according to any one of the first to eighth aspects, in which the one or more images include an image depicting an event or a tourist attraction.

A tenth aspect of the present invention is a method according to any one of the first to ninth aspects, in which the display includes displaying, on the camera application, an image associated with one or more NFTs associated with the public address that satisfies a predetermined condition.

An eleventh aspect of the present invention is a method according to any one of the first to tenth aspects, in which the one or more storage locations are each a URL on a distributed storage device that includes a hash value of each image.

The twelfth aspect of the present invention is a method according to any one of the first to eleventh aspects, in which the image used as the camera frame can be changed from the screen on which the image can be captured.

A thirteenth aspect of the present invention is a method according to any one of the first to twelfth aspects, in which the display includes sorting based on the holder's past selections.

In addition, a fourteenth aspect of the present invention is a program for causing a mobile terminal of a holder of one or more NFTs to execute a method for providing the holder with a camera application, the method including the steps of receiving a program for the camera application, connecting a software wallet selected by the holder to the camera application, receiving one or more storage locations of one or more images linked to at least one of the one or more NFTs associated with the public address from a blockchain network in which the public address selected by the holder is recorded, the public address being managed by the software wallet after the software wallet is connected, acquiring the one or more images from the one or more storage locations, displaying at least one of the one or more images on the camera application, and enabling video capture using the image selected by the holder as a camera frame.

A fifteenth aspect of the present invention is a mobile terminal for providing a camera application to a holder of one or more NFTs, which receives a program for the camera application, connects a software wallet selected by the holder to the camera application, and after connecting the software wallet, receives one or more storage locations of one or more images linked to at least one of the one or more NFTs associated with the public address, which is a public address managed by the software wallet and recorded in a blockchain network in which the public address selected by the holder is recorded, retrieves the one or more images from the one or more storage locations, and displays at least one of the one or more images on the camera application, enabling video capture using the image selected by the holder as a camera frame.

According to one aspect of the present invention, a software wallet installed on a mobile terminal 100 is connected to a camera application running on the mobile terminal 100 used by the holder of one or more NFTs, and an image selected by the holder from one or more images linked to one or more NFTs associated with a public address managed by the software wallet is made available as a camera frame for taking video, thereby providing the holder with a new experience that can be obtained by holding an NFT.

FIG. 1 illustrates a system according to an embodiment of the present invention. FIG. 2 is a flow diagram of a method for providing a camera application according to an embodiment of the present invention. FIG. 13 is a diagram showing an example of a wallet connection screen in the camera application according to the embodiment of the present invention. FIG. 11 is a diagram showing an example of an NFT list screen in a camera application according to one embodiment of the present invention. FIG. 11 is a diagram showing an example of a shooting screen in a camera application according to an embodiment of the present invention.

The following describes in detail an embodiment of the present invention with reference to the drawings.

Figure 1 shows a system according to one embodiment of the present invention. A mobile terminal 100 used by an NFT holder communicates with a first device 110, a second device 120 different from the first device 110, a blockchain network 130, and storage 140 via an IP network such as the Internet. The blockchain network 130 includes multiple nodes, and the mobile terminal 100 communicates with any of the nodes.

The mobile terminal 100 includes a communication unit 101 such as a communication interface, a processing unit 102 such as a processor or CPU, and a storage unit 103 including a storage device or storage medium such as a memory or hard disk, and can be configured by executing a program for performing each process or operation in at least one processor of the processing unit 102. The mobile terminal 100 can be a portable device such as a smartphone or tablet that can be connected to an IP network by wireless communication. The program may include one or more programs, and can be recorded on a computer-readable storage medium to form a non-transient program product. The program can be stored in the storage unit 103, and instructions included in the program can be executed in at least one processor of the processing unit 102, and can also be transmitted from the first device 110 to the mobile terminal 100 as described below.

First, the mobile terminal 100 receives a module for a camera application from the first device 110 (S201). FIG. 3 shows an example of a screen 300 displayed in a web browser running on the mobile terminal 100 when the module is executed on the mobile terminal 100. The module can be written in JavaScript (registered trademark) language, for example. An example of a camera application provided using a web browser will be described below, but a native application may also be installed on the mobile terminal 100. In this case, the mobile terminal 100 receives the native application from the first device 110 in advance. In either case, the mobile terminal 100 only needs to receive a program for the camera application from the first device 110.

Next, the mobile terminal 100 transmits a request to a second device 120 different from the first device 110 to connect the software wallet to the camera application (S202). The software wallet must be installed on the mobile terminal 100 and its public address must be registered. The software wallet may be a native application or a plug-in for a web browser.

For example, in the example of screen 300 shown in FIG. 3, in response to the user of the mobile terminal 100 clicking or tapping a button labeled "Connect Wallet," a selection screen for the wallet to be connected may be displayed on the display screen of the mobile terminal 100, and a request may be made to the second device 120 providing the wallet connection service to connect the wallet selected by the user to the camera application. Here, "connecting" a wallet means that the application to be connected is able to view the public address and data associated therewith managed in the wallet to be connected.

Then, the mobile terminal 100 receives a notification from the second device 120 via the first device 110, if necessary, that the connection has been successful (S203). Here, an example is described in which the wallet connection service provided by the second device 120 is used, but other methods may be used as long as the software wallet installed on the mobile terminal 100 can be connected to the camera application. Also, instead of the second device 120 notifying the user that the connection has been successful, the software wallet may notify the camera application on the mobile terminal 100, and no explicit notification may be given.

After connection, the mobile terminal 100 receives, from the blockchain network 130 where the public address managed by the software wallet is recorded, one or more URLs of one or more images included in the metadata of at least one of the one or more NFTs associated with the public address (S204-S205). Although the term URL is used, any information indicating a storage location on an IP network will suffice. The blockchain network 130 can be an Ethereum (trademark) blockchain network or an EVM-compatible network.

Specifically, as an example, a contract address capable of issuing NFTs targeted by a camera application is stored in the camera application, and the number n of NFTs issued using that contract address is obtained using the web3.js method tokenSupply(). If the tokenid that identifies an NFT is incremented from 0, it is possible to check which public address holds each NFT by calling the method ownerOf(tokenid) for tokenids 0 to n-1. An NFT identified by a tokenid whose return value from the method ownerOf(tokenid) matches a public address managed by a software wallet connected to the camera application can be identified as an NFT associated with that public address. Then, for each NFT identified in this way, the method tokenURI(tokenid) can be called to find the URL of the image included in the metadata of that NFT.

The URL of the image linked to the NFT associated with the public address managed by the software wallet may be obtained by storing an association between multiple NFT identifiers, such as tokenids, and the URL of the image linked to the NFT identified by each NFT identifier in a storage device or storage medium accessible by the mobile terminal 100, and referencing this.

The mobile terminal 100 can access the received URL or URLs to obtain the images stored in those URLs (S206 to S207). The metadata for each NFT is, for example, JSON format data, and includes the URL of the image, and may further include the name and description of the image. The URL can be a URL that includes an identifier of the content in the distributed storage. If the identifier is a hash value of the image, if there is tampering after the NFT is issued, the hash value will not match the identifier, making it possible to verify whether or not there has been tampering. An example of an image that can be obtained is an image that includes one or more people or buildings.

Then, as shown in the list screen 400 of FIG. 4, at least a part of the acquired image or images is displayed on a camera application (S208), and when the NFT holder, who is the user of the mobile terminal 100, selects one of the images, it becomes possible to shoot video using that image as a camera frame (S209). Here, displaying at least a part of the acquired image or images includes displaying them as previews such as thumbnails corresponding to the images. Furthermore, the display may be performed after rearranging the images based on the NFT holder's past selections to reflect the NFT holder's preferences. In the example of the shooting screen 500 shown in FIG. 5, it is possible to take photos, but it may also be possible to shoot videos. Furthermore, it may be possible to change the image used as the camera frame from the screen where shooting is possible.

In this way, by connecting a software wallet installed on the mobile terminal 100 to a camera application running on the mobile terminal 100 used by the holder of one or more NFTs, and enabling the holder to take video using an image selected by the holder from one or more images linked to one or more NFTs associated with a public address managed by the software wallet as the camera frame, the holder can be given a new experience that can be obtained by holding an NFT due to the rarity of the NFT to which the image is linked. By linking collected NFTs to the familiar act of explaining photos or videos, the benefits of holding NFTs can be realized, increasing interest in NFTs.

The image displayed on the camera application may be an image linked to one or more NFTs associated with the public address that satisfy certain conditions. For example, by displaying an image on the camera application as an image that can be selected only at a certain location or date and time, the value of the experience given to the holder of the NFT linked to the image can be increased. Examples of such images include images representing events such as fireworks or festivals, and images representing tourist attractions. Furthermore, of the displayed images, only images linked to one or more NFTs associated with the public address that satisfy certain conditions may be selectable.

Please note that in the above embodiments, unless there is a statement of "only" such as "based only on", "depending only on", or "only in the case of", it is assumed in this specification that additional information may be taken into consideration. As an example, please note that the statement "do b when a" does not necessarily mean "do b always when a" or "do b immediately after a" unless expressly stated. Furthermore, the statement "each a constituting A" does not necessarily mean that A is composed of multiple components, but includes the case where the component is singular.

For the avoidance of doubt, even if there is an aspect of a method, program, terminal, device, server, or system (hereinafter "method, etc.") that performs an operation different from that described in this specification, each aspect of the present invention is directed to an operation identical to any of the operations described in this specification, and the existence of an operation different from that described in this specification does not cause the method, etc. to fall outside the scope of each aspect of the present invention.

REFERENCE SIGNS LIST 100 Mobile terminal 101 Communication unit 102 Processing unit 103 Memory unit 110 First device 120 Second device 130 Blockchain network 140 Storage 300 Connection screen 400 List screen 500 Photography screen

Claims (15)

1. A method for providing a camera application to a holder of one or more NFTs, the method comprising:
receiving a program for the camera application;
connecting said holder's selected software wallet to said camera application;
After connecting the software wallet, receiving one or more storage locations of one or more images linked to at least one of the one or more NFTs associated with the public address from a blockchain network on which a public address managed by the software wallet is recorded;
acquiring the one or more images from the one or more storage locations;
displaying at least one of the one or more images on the camera application;
and enabling the holder to take a video using the image selected by the holder as a camera frame. 2. The method of claim 1 ,
The mobile terminal is a smartphone. 3. The method according to claim 1 or 2,
The blockchain network is an EVM compatible network. 4. A method according to any one of claims 1 to 3, comprising:
The one or more NFTs were issued using a contract address for the camera application. 5. A method according to any one of claims 1 to 4, comprising:
The software wallet is a wallet selected by the holder. 6. A method according to any one of claims 1 to 5, comprising:
The public address is an address chosen by the holder. 7. A method according to any one of claims 1 to 6, comprising:
The program is a module that the mobile terminal receives from a first device. 8. The method of claim 7,
The connection of the software wallet is performed by sending a request to a second device, different from the first device, to connect the software wallet to the camera application. 9. A method according to any one of claims 1 to 8, comprising:
The one or more images include an image depicting an event or a tourist attraction. 10. The method according to any one of claims 1 to 9,
The display includes displaying an image linked to one or more NFTs associated with the public address that meets certain conditions on the camera application. 11. A method according to any one of claims 1 to 10, comprising:
Each of the one or more storage locations is a URL on a distributed storage system that includes a hash value of each image. 12. A method according to any one of claims 1 to 11, comprising:
The image used as the camera frame can be changed from the screen on which photography can be performed. 13. A method according to any one of claims 1 to 12, comprising:
The display includes sorting based on the holder's past selections. A program for causing a mobile terminal of a holder of one or more NFTs to execute a method for providing the holder with a camera application, the method comprising:
receiving a program for the camera application;
connecting said holder's selected software wallet to said camera application;
After connecting the software wallet, receiving one or more storage locations of one or more images linked to at least one of the one or more NFTs associated with the public address from a blockchain network on which a public address managed by the software wallet is recorded;
acquiring the one or more images from the one or more storage locations;
displaying at least one of the one or more images on the camera application;
and enabling the holder to take a video using the image selected by the holder as a camera frame. A mobile terminal for providing a camera application to a holder of one or more NFTs,
receiving a program for the camera application;
connecting said holder's selected software wallet to said camera application;
After connecting the software wallet, receive one or more storage locations of one or more images linked to at least one of the one or more NFTs associated with the public address managed by the software wallet from a blockchain network in which the public address is recorded, and obtain the one or more images from the one or more storage locations;
At least one of the one or more images is displayed on the camera application, allowing the owner to take video using the image selected by the owner as a camera frame.