KR102438846B1 - Method, device and system for providing nft asset trading service of user style information based on did - Google Patents

Abstract

According to one embodiment, provided is a method of providing NFT asset trading services of user style information based on DID performed by a device. The method comprises: a step of receiving identification information of a first user from a first user terminal when the identity of a first user is verified through the DID of the first user in the first user terminal; a step of obtaining a style history of the first user based on the identification information of the first user; a step of providing the style history of the first user to the first user terminal; a step of receiving an NFT request for a first style, which is any one of the style histories of the first user, from the first user terminal; a step of extracting first style information from the style history of the first user; a step of issuing an NFT of the first style information and generating NFT of the first style information; a step of extracting a first user identifier code from the identification information of the first user generated through the DID of the first user; a step of linking the NFT of the first style information and the first user identifier code; and a step of transmitting the NFT of the first style information and the first user identifier code to a distributed ledger of a blockchain network, and recording the first user as an owner of the first style information on a transaction block of the distributed ledger. The present invention has the effect of clearly setting the ownership relationship of the NFT based on the DID while capitalizing the style of the user into the NFT.

Description

Method, device and system for providing NFT asset trading service of DID-based user style information {METHOD, DEVICE AND SYSTEM FOR PROVIDING NFT ASSET TRADING SERVICE OF USER STYLE INFORMATION BASED ON DID}

The following embodiments relate to a technology for providing an NFT asset trading service of user style information based on DID.

Conventional digital assets such as music files and picture files are easy to copy, and it is not known who owns the original digital assets, so they have not been recognized as practically tradable assets. In contrast, a non-fungible token (NFT), which has recently been used, is a type of digital asset and refers to a specific non-fungible cryptographic digital asset currently issued by Ethereum. By storing the ownership of the digital file on the blockchain, it is made impossible for forgery and tampering, so that it is permanently preserved, and the ownership can be verified in a decentralized form. The non-fungible feature of NFT is based on the non-exchangeability of existing cryptocurrencies. Whereas existing cryptocurrencies were able to be exchanged 1:1 with other cryptocurrencies, non-fungible tokens cannot be exchanged 1:1 with non-tradable cryptocurrencies. Through this, each non-fungible token has scarcity and irreversible transaction proof is possible.

As such, NFTs have been used to prove ownership of digital assets in the metaverse, a virtual world.

Such NFT is a means to digitally tokenize existing assets such as games, art works, real estate, etc. There is an extensibility that can be

Therefore, there is a need to implement a technology that can clearly set the ownership relationship of the NFT while capitalizing the user's style as an NFT.

Korean Patent No. 10-2355550 Korean Patent No. 10-2320550 Korean Patent Publication No. 10-2021-0029702 Korean Patent Publication No. 10-2019-0142353

According to an embodiment, when the first user's identity is verified through the first user's DID in the first user terminal, the first user's identity confirmation information is received from the first user terminal, and the first user's identity is confirmed Based on the information, obtain the style history of the first user, provide the style history of the first user to the first user terminal, and from the first user terminal to the first style that is any one of the style history of the first user Receive the NFTization request, extract the first style information from the style history of the first user, issue an NFT for the first style information, generate an NFT of the first style information, and use the DID of the first user Extracts the first user identifier code from the generated identification information of the first user, connects the NFT of the first style information and the first user identifier code, and uses the distributed ledger of the blockchain network to perform the NFT and second method of the first style information 1 To provide a method, apparatus and system for providing an NFT asset transaction service of DID-based user style information, which records the first user as the owner of the first style information on the transaction block of the distributed ledger by sending a user identifier code for that purpose

Objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood from the description below.

According to an embodiment, in a method of providing an NFT asset transaction service of user style information based on DID, performed by a device, the identity of the first user is verified through the DID of the first user in the first user terminal receiving the identification information of the first user from the first user terminal, if done; obtaining a style history of the first user based on the identification information of the first user; providing the style history of the first user to the first user terminal; receiving, from the first user terminal, an NFT-ization request for a first style that is any one of the first user's style histories; extracting first style information from the style history of the first user; generating an NFT of the first style information by issuing an NFT for the first style information; extracting a first user identifier code from the identification information of the first user generated through the DID of the first user; associating the NFT of the first style information with the first user identifier code; and transmitting the NFT of the first style information and the first user identifier code to a distributed ledger of a blockchain network to record the first user as the owner of the first style information on a transaction block of the distributed ledger. A method for providing NFT asset transaction service of DID-based user style information is provided, including.

The method of providing an NFT asset transaction service of the DID-based user style information includes, after the step of recording the first user as the owner of the first style information, a purchase request for the NFT of the first style information from a second user terminal receiving; transmitting a deposit request for the first price to the second user terminal when the price for the NFT of the first style information is set as the first price; extracting a second user identifier code from the identification information of the second user generated through the DID of the second user when it is confirmed that the amount for the first price has been deposited; disconnecting the NFT of the first style information and the first user identifier code, and linking the NFT of the first style information and the second user identifier code; and sending the NFT of the first style information and the second user identifier code to the distributed ledger to record the second user as a new owner of the first style information on the transaction block of the distributed ledger. may include

In the method for providing NFT asset transaction service of DID-based user style information, after recording the first user as the owner of the first style information, a joint investment request for NFT of the first style information from a second user terminal receiving; When the price for the NFT of the first style information is set as the first price, and the investable amount of the first price is set as the second price, a deposit request for a part of the second price is sent to the second price. 2 transmitting to the user terminal; extracting a second user identifier code from the identification information of the second user generated through the DID of the second user when it is confirmed that the amount for the third price is deposited as the investment amount of the second price; further linking the NFT of the first style information with the second user identifier code; and sending the NFT of the first style information, the first user identifier code, and the second user identifier code to the distributed ledger, so as to place the first user on the transaction block of the distributed ledger as the first style information. The method may further include recording as the first owner, and recording the second user as the second owner of the first style information.

According to an embodiment, when the first user's identity is verified through the first user's DID in the first user terminal, the first user's identity confirmation information is received from the first user terminal, and the first user's identity is confirmed Based on the information, obtain the style history of the first user, provide the style history of the first user to the first user terminal, and from the first user terminal to the first style that is any one of the style history of the first user Receive the NFTization request, extract the first style information from the style history of the first user, issue an NFT for the first style information, generate an NFT of the first style information, and use the DID of the first user Extracts the first user identifier code from the generated identification information of the first user, connects the NFT of the first style information and the first user identifier code, and uses the distributed ledger of the blockchain network to perform the NFT and second method of the first style information By sending a user identifier code and recording the first user as the owner of the first style information on the transaction block of the distributed ledger, the effect of clearly establishing the ownership relationship of the NFT based on DID while capitalizing the user's style as an NFT there is

On the other hand, the effects according to the embodiments are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

1 is a diagram schematically showing the configuration of a system according to an embodiment.
2 is a flowchart illustrating a process of providing an NFT asset transaction service of user style information based on DID according to an embodiment.
3 is a flowchart illustrating a process of changing an owner through an NFT asset transaction according to an embodiment.
4 is a flowchart for explaining a process of adding an owner through a joint investment according to an embodiment.
5 is a flowchart for explaining a process of calculating an investment ratio of a joint investment according to an embodiment.
6 is a flowchart illustrating a process of setting an order of owners through an investment ratio according to an exemplary embodiment.
7 is an exemplary diagram of a configuration of an apparatus according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to a specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected” to another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

Terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are assigned the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In the description of the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

The embodiments may be implemented in various types of products, such as personal computers, laptop computers, tablet computers, smart phones, televisions, smart home appliances, intelligent cars, kiosks, wearable devices, and the like.

1 is a diagram schematically showing the configuration of a system according to an embodiment.

Referring to FIG. 1 , a system according to an embodiment may include a plurality of user terminals 100 and devices 200 capable of communicating with each other through a communication network.

First, the communication network may be configured regardless of its communication mode, such as wired and wireless, and may be implemented in various forms so that communication between a server and a server and communication between a server and a terminal are performed.

The plurality of user terminals 100 are terminals used by users, and include a first user terminal 110 used by a first user, a second user terminal 120 used by a second user, and a third user terminal used by a third user. 3 It may include a user terminal 130 and the like.

Each of the plurality of user terminals 100 may be a desktop computer, a notebook computer, a tablet, a smart phone, or the like. For example, as shown in FIG. 1 , the first user terminal 110 , the second user terminal 120 , the third user terminal 130 , etc. may be smartphones, and may be employed differently depending on the embodiment. have.

Each of the plurality of user terminals 100 may be configured to perform all or part of an arithmetic function, a storage/referencing function, an input/output function, and a control function of a typical computer. The plurality of user terminals 100 may be configured to communicate with the device 200 by wire or wireless.

Each of the plurality of user terminals 100 is connected to a web page operated by a person or group that provides a service using the device 200 , or is developed and distributed by a person or group that provides a service using the device 200 . One application can be installed. Each of the plurality of user terminals 100 may be linked with the device 200 through a web page or an application.

Each of the plurality of user terminals 100 may access the device 200 through a web page or an application provided by the device 200 .

Hereinafter, for convenience of description, the operation of the first user terminal 110 will be mainly described, but other user terminals such as the second user terminal 120 may perform the operation of the first user terminal 110 instead. to be.

The device 200 may be a self-server owned by a person or organization that provides services using the device 200, a cloud server, or a peer-to-peer (p2p) set of distributed nodes. may be The device 200 may be configured to perform all or part of an arithmetic function, a storage/referencing function, an input/output function, and a control function of a typical computer.

The device 200 may be configured to communicate with the plurality of user terminals 100 by wire or wireless, and controls the operation of each of the plurality of user terminals 100 , and displays which information on the screen of each of the plurality of user terminals 100 . You can control what is displayed.

Meanwhile, for convenience of explanation, only the first user terminal 110 , the second user terminal 120 , and the third user terminal 130 are shown in FIG. 1 among the plurality of user terminals 100 , but the number of terminals is not It may vary depending on the example. As long as the processing capacity of the apparatus 200 allows, the number of terminals is not particularly limited.

The device 200 may provide a platform for IMS (Identity Meta Style), and through the platform, manage the user's style history, NFT the user's style information, and create a marketplace for NFT asset trading. can provide

According to an embodiment, a user's style may mean a beauty style such as a user's hair, clothes, and makeup, and the user's style history is a history of the user's style change history, and style information is generated by the user's request. Each time, the generated style information may be added to the user's style history. The style information may include information generated by producing a state of a user's beauty style, such as hair, clothes, and makeup, as digital content, such as photos, videos, and images. Whenever style information is received from the plurality of user terminals 100, the device 200 may update the user's style history by adding the style information to the user's style history stored separately in the database.

For example, when the first user visits the first hairdressing salon and changes the hair shape, when the first user's hair style is photographed through the first user terminal 110 , the first user terminal 110 . includes information about the first hair salon, information on the date and time of visiting the first hair salon, information about the hair designer who made the first user's hair style, and an image generated by shooting the first user's hair style to generate first style information, and when receiving the first style information from the first user terminal 110 , the device 200 may add the first style information to the style history of the first user. In this case, the device 200 may sort the style history of the first user in the order of most recently generated style information based on the generation time of the style information.

According to one embodiment, in the distributed platform of the blockchain network, each node operates as an encrypted P2P network, and the transaction records of each asset called a so-called 'block' are connected through an encrypted hash function in the distributed ledger. , form a so-called 'blockchain' that is interconnected. Each block in the blockchain contains a transaction record of a digital asset that is authenticated through peer devices for the validity of each transaction. Encrypted and decentralized computing technologies are used to identify verification and authentication of asset transactions, and can prevent duplication of encrypted digital assets registered in the distributed platform of the blockchain network. The authenticated owner may be provided with a private key, which may point to where an asset is located on the network or indicate how a file is decrypted or reconstructed.

A fungible token that is generally used as a cryptocurrency refers to a token that can replace one token with another token. A replaceable token means that every token is not unique, and interchangeable tokens are interchangeable. Currently, the vast majority of cryptocurrencies have the potential to be exchanged, a unit of measure, or a store of value. For example, ERC-20 on the Ethereum network is a replaceable token.

On the other hand, the non-fungible token (NFT) in the present invention is a digital asset that is authenticated with a unique bit that permanently records its authenticity, and is a block that is a distributed ledger system that is the basis of cryptocurrencies such as Ethereum. stored in the chain. Although it is similar to a replaceable cryptocurrency in that it is tokenized (or assetized) using blockchain technology, cryptocurrency can be used by anyone just like real money, whereas NFT has a unique recognition value for each digital asset. Because it has, it has irreplaceable properties. Due to the nature of blockchain technology, once created, NFT cannot be deleted or forged, and ownership and transaction history are specified, so it can be used as a kind of digital certificate and certificate of ownership. For example, ERC-721 on the Ethereum network is a non-fungible token (NFT).

The device 200 may provide a transaction service between users by allowing users to be connected through the IMS platform, and may also provide a transaction service between users and affiliate stores by connecting users and affiliated stores.

The device 200 may allow access to the IMS platform only to users whose identity is confirmed through the DID. Here, DID (Decentralized Identifiers) are distributed identifiers, which distribute and manage personal information not on a central server, but on personal devices such as personal smartphones and tablets, and record only the authenticity of the information on a block chain that cannot be forged or falsified. They can prove their identity on their own without any intermediary to intervene.

That is, when the user's identity is verified through the DID, the device 200 may provide an NFT asset transaction service of style information only to the identified user.

2 is a flowchart illustrating a process of providing an NFT asset transaction service of user style information based on DID according to an embodiment.

Referring to FIG. 2 , first, in step S201 , the device 200 may receive identification information of the first user from the first user terminal 110 . Here, the identification information is information necessary to confirm the identity of the first user, and may include an identifier code assigned to the first user, and the identity of the first user may be confirmed through the identification information.

Specifically, the first user terminal 110 may perform a process of verifying the identity of the first user through the DID of the first user, and when the identity of the first user is verified through the DID of the first user, Identification information of the first user may be generated.

When the first user's identification information is generated in the first user terminal 110 , the device 200 may receive the first user's identification information from the first user terminal 110 .

In step S202 , the device 200 may acquire the style history of the first user based on the identification information of the first user. In this case, after extracting the first user identifier code from the identification information of the first user, the device 200 inquires the style history of the first user in the database using the first user identifier code, and then the retrieved first user You can acquire the style history of To this end, the database of the device 200 stores style histories divided for each user.

The first user's style history is a history of the first user's style change history, and whenever style information is generated by a first user's request, the generated style information is added to the first user's style history, and a plurality of It may include style information. Each style information may include information about a place, person, date, time, and the like that made the style, and information about an image, a video, etc. generated by shooting the style.

In step S203 , the device 200 may provide the style history of the first user to the first user terminal 110 . In this case, the device 200 may provide the first user's style histories arranged in the most recently generated order to the first user terminal 110 .

In step S204 , the device 200 may receive from the first user terminal 110 an NFTization request for the first style, which is any one of the first user's style histories. Here, the NFTization request for the first style is a request to issue and generate an NFT for the first style information, and a predetermined fee for NFT issuance may be charged when the NFTization request for the first style information is made.

In step S205 , when the NFT request for the first style is received, the device 200 may extract the first style information from the style history of the first user.

For example, the first user's style history includes first style information, second style information, third style information, and the like. When the NFT request for the first style is received, the device 200 performs the first The first style information may be extracted from the user's style history.

In step S206 , the device 200 may generate an NFT of the first style information by issuing an NFT for the first style information. In this case, the device 200 may generate the NFT of the first style information by including the identification information of the first user generated through the DID of the first user.

When generating the NFT of the first style information by issuing the NFT for the first style information, the device 200 may generate the NFT of the first style information as an encrypted digital asset.

According to one embodiment, generating an encrypted digital asset includes generating an encrypted unique digital asset code having an address, a public key and a private key pair.

According to one embodiment, the encrypted digital asset includes an identifier, which is a unique number assigned to the style information. Accordingly, encrypted digital assets can be matched one-to-one with style information.

In step S207 , the device 200 may extract the first user identifier code from the identification information of the first user generated through the DID of the first user. That is, the identification information of the first user includes the first user identifier code, and the device 200 extracts the first user identifier code from the identification information of the first user received from the first user terminal 110 . can do.

According to one embodiment, the first user identifier code means an ID code used to identify the first user in the blockchain network. The first user identifier code may include at least one of the first user's name, user ID, phone number, and email.

In step S208, the device 200 may associate the NFT of the first style information with the first user identifier code.

According to one embodiment, the connection of the NFT of the first style information and the first user identifier code is a public key and a private key in the blockchain locker of the first user, while designating the first user as the owner in the NFT of the first style information. It can mean executing a series of commands that store the key.

In step S209, the device 200 transmits the NFT of the first style information and the first user identifier code to the distributed ledger of the blockchain network, making the first user on the transaction block of the distributed ledger as the owner of the first style information can be recorded

Specifically, the device 200 transmits the first user identifier code together with the NFT of the first style information, which is a digital asset encrypted with the distributed ledger of the blockchain network. At this time, the owner of the NFT of the first style information is not designated on the transaction block of the distributed ledger. Accordingly, on the transaction block of the distributed ledger, it is recorded as a transaction record that the first user is set as the owner of the NFT of the first style information, and this transaction record can be verified through each node peer.

As described above, through the process of providing NFT asset transaction service of user style information based on DID, by inserting identification information generated based on DID to create NFT assets of style information, NFT personalization and assets Ownership relationship can be clearly set, and users can turn their style information into NFTs and turn them into assets.

3 is a flowchart illustrating a process of changing an owner through an NFT asset transaction according to an embodiment.

Referring to FIG. 3 , first, in step S301 , the device 200 may receive a purchase request for the NFT of the first style information from the second user terminal 120 . Here, the purchase request for the NFT of the first style information is a request to purchase the NFT of the first style information and change the owner to itself.

Before step S301, the second user terminal 120 may perform a process of verifying the identity of the second user through the DID of the second user, and the second user's identity is verified through the DID of the second user. In this case, identification information of the second user may be generated, and when the identification information of the second user is generated in the second user terminal 120 , the device 200 receives the second information from the second user terminal 120 . Receive user identification information.

In step S302 , the device 200 may check the first price set as the price for the NFT of the first style information. Here, the first price may be preset by the request of the first user.

In step S303 , when the price for the NFT of the first style information is set as the first price, the device 200 may transmit a deposit request for the first price to the second user terminal 120 . Here, the deposit request for the first price is a request to deposit the first price into a designated account to purchase the NFT of the first style information.

In step S304 , the device 200 may confirm that the amount for the first price has been deposited. At this time, when the device 200 requests to deposit the first price into the account of the operator who operates the device 200, if it is confirmed that the amount for the first price has been deposited by the second user into the account, the second user An amount obtained by deducting a predetermined fee from the amount for one price may be transferred to the first user's account.

In step S305 , when it is confirmed that the amount for the first price has been deposited, the device 200 may extract the second user identifier code from the identification information of the second user generated through the DID of the second user. That is, the identification information of the second user includes the second user identifier code, and the device 200 extracts the second user identifier code from the identification information of the second user received from the second user terminal 120 . can do.

According to one embodiment, the second user identifier code means an ID code used to identify the second user in the blockchain network. The second user identifier code may include at least one of the second user's name, user ID, phone number, and email.

In step S306 , the device 200 may disconnect the NFT of the first style information and the first user identifier code, and link the NFT of the first style information and the second user identifier code.

According to an embodiment, disconnecting the NFT of the first style information and the first user identifier code, and linking the NFT of the first style information and the second user identifier code, includes the NFT of the first style information as an owner. It may mean executing a series of commands to store the public key and the private key in the block chain locker of the second user while changing the designated first user to the second user.

In step S307, the device 200 transmits the NFT of the first style information and the second user identifier code to the distributed ledger of the blockchain network, making the second user on the transaction block of the distributed ledger as a new owner of the first style information can be recorded as

Specifically, the device 200 transmits the second user identifier code together with the NFT of the first style information, which is a digital asset encrypted with the distributed ledger of the blockchain network. At this time, on the transaction block of the distributed ledger, the owner of the NFT of the first style information is designated as the first user. Accordingly, on the transaction block of the distributed ledger, it is recorded as a transaction record that the owner of the NFT of the first style information is changed from the first user to the second user, and this transaction record can be verified through each node peer. have.

4 is a flowchart for explaining a process of adding an owner through a joint investment according to an embodiment.

Referring to FIG. 4 , first, in step S401 , the device 200 may receive a joint investment request for NFT of first style information from the second user terminal 120 . Here, the request for joint investment in the NFT of the first style information is a request to purchase a partial stake in order to jointly invest in the NFT of the first style information.

Before step S401, the second user terminal 120 may perform a process of verifying the identity of the second user through the DID of the second user, and the identity of the second user is verified through the DID of the second user. In this case, identification information of the second user may be generated, and when the identification information of the second user is generated in the second user terminal 120 , the device 200 receives the second information from the second user terminal 120 . Receive user identification information.

In step S402 , when the first price is set as the price for the NFT of the first style information, the device 200 may check a second price set as an investable amount among the first prices. Here, the second price may be preset by the request of the first user. For example, when the first price is set to 1 million won, the second price may be set to 490,000 won so as not to exceed 50% of the first price.

In step S403 , the device 200 may transmit a deposit request for a portion of the second price to the second user terminal 120 . Here, the deposit request for a portion of the second price is a request to deposit an amount up to the second price into a designated account in order to proceed with the joint investment in the NFT of the first style information.

In step S404 , the device 200 may confirm that the amount for the third price is deposited as the investment amount among the second prices. At this time, when the device 200 requests to deposit a portion of the second price into the account of the operator who operates the device 200 , when it is confirmed that the amount for the third price has been deposited into the account by the second user , an amount obtained by deducting a predetermined fee from the amount for the third price may be transferred to the account of the first user. For example, when the second price, which is the investment possible amount, is set to 490,000 won, the third price, which is the investment amount, may be deposited as 300,000 won.

In step S405 , when it is confirmed that the amount for the third price has been deposited, the device 200 may extract the second user identifier code from the identification information of the second user generated through the DID of the second user.

In step S406 , the device 200 may additionally associate the NFT of the first style information with the second user identifier code. At this time, since the device 200 is in a state in which the NFT of the first style information and the first user identifier code are connected, the first user identifier code and the second user identifier code are connected by connecting the second user identifier code to the first user identifier code. In the order of the identifier code, it can be linked to the NFT of the first style information.

According to an embodiment, in further linking the NFT of the first style information and the second user identifier code, only the first user is designated as the owner in the NFT of the first style information, while additionally designating the second user , it may mean executing a series of commands to store the public and private keys in the second user's blockchain locker.

In step S407, the device 200 transmits the NFT of the first style information, the first user identifier code, and the second user identifier code to the distributed ledger of the blockchain network, thereby placing the first user on the transaction block of the distributed ledger. 1 It may be recorded as the first owner of the style information, and the second user may be recorded as the second owner of the first style information. When the first user is recorded as the first owner of the first style information, the first user's stake in the first style information is recorded together, and when the second user is recorded as the second owner of the first style information, The share of the second user with respect to the first style information may be recorded together. The share of the first user may be set as a value obtained by dividing the first price by the first price after subtracting the third price from the first price, and the share of the second user may be obtained by dividing the first price by the third price. can be set to

Specifically, the device 200 transmits the first user identifier code and the second user identifier code together with the NFT of the first style information, which is a digital asset encrypted with the distributed ledger of the blockchain network. At this time, on the transaction block of the distributed ledger, the owner of the NFT of the first style information is designated as the first user. Accordingly, on the transaction block of the distributed ledger, the first user designated as the owner of the NFT of the first style information is set as the first owner, and the second user is set as the second owner as the transaction record. , these transaction records can be verified through each node peer.

5 is a flowchart for explaining a process of calculating an investment ratio of a joint investment according to an embodiment.

Referring to FIG. 5 , first, in step S501 , the device 200 may receive a joint investment request for NFT of first style information from the third user terminal 130 . At this time, with the second user already investing the third price in the NFT of the first style information, the first user is recorded as the first owner of the first style information, and the second user is the second user of the first style information It is recorded as the owner.

Before step S501, the third user terminal 130 may perform a process of verifying the identity of the third user through the DID of the third user, and the third user's identity is verified through the DID of the third user. In this case, the third user's identification information may be generated, and when the third user's identification information is generated by the third user terminal 130 , the device 200 receives the third user's identification information from the third user terminal 130 . Receive user identification information.

In step S502, the device 200 may calculate a fourth price by subtracting the third price from the second price when the third price among the second prices, which is the investable amount, is invested by the second user. have. For example, when the second price, which is an investment possible amount, is set to 490,000 won, and the third price, which is the investment amount of the second user, is confirmed to be 300,000, the fourth price may be calculated as 190,000 won.

In step S503 , the device 200 may transmit a deposit request for a portion of the fourth price to the third user terminal 130 . Here, the deposit request for a portion of the fourth price is a request to deposit an amount up to the fourth price into a designated account in order to proceed with the joint investment in the NFT of the first style information.

In step S504 , the device 200 may confirm that the amount for the fifth price is deposited as the investment amount among the fourth prices. At this time, when the device 200 requests to deposit a portion of the fourth price into the account of the operator who operates the device 200 , when it is confirmed that the amount for the fifth price has been deposited by the third user into the account , an amount obtained by deducting a predetermined fee from the amount for the fifth price may be transferred to the first user's account. For example, when the fourth price, which is an investable amount, is calculated as 190,000 won, the fifth price, which is the investment amount, may be deposited as 150,000 won.

In step S505 , when it is confirmed that the amount for the fifth price has been deposited, the device 200 may extract the third user identifier code from the identification information of the third user generated through the DID of the third user. That is, the third user's identification information includes the third user identifier code, and the device 200 extracts the third user identifier code from the third user's identification information received from the third user terminal 130 . can do.

According to one embodiment, the third user identifier code means an ID code used to identify a third user in the blockchain network. The third user identifier code may include at least one of the third user's name, user ID, phone number, and email.

In step S506 , the device 200 may calculate a first ratio that is a ratio that the third price occupies in the first price, and may calculate a second ratio that is a ratio that the fifth price occupies in the first price. That is, the device 200 may calculate the first ratio by dividing the first price by the third price, and calculate the second ratio by dividing the first price by the fifth price. In this case, the first ratio is the share of the second user with respect to the first style information, and the second ratio is the share of the third user with respect to the first style information.

6 is a flowchart illustrating a process of setting an order of owners through an investment ratio according to an exemplary embodiment.

Referring to FIG. 6 , first, in step S601 , when the first ratio and the second ratio are calculated, the device 200 may determine whether the first ratio is greater than the second ratio.

If it is determined in step S601 that the first ratio is greater than the second ratio, in step S602, the device 200 performs the NFT of the first style information, the first user identifier code, the second user identifier code, and the third user identifier code in the order can be connected to

That is, the device 200 may additionally link the NFT of the first style information and the third user identifier code. In this case, since the device 200 is in a state in which the NFT of the first style information and the first user identifier code are connected and the first user identifier code and the second user identifier code are connected, the third user identifier code is added to the second user identifier code. By concatenating the user identifier code, the first user identifier code, the second user identifier code, and the third user identifier code may be connected to the NFT of the first style information in the order.

If it is determined in step S601 that the second ratio is greater than the first ratio, in step S603 , the device 200 performs the NFT of the first style information, the first user identifier code, the third user identifier code, and the second user identifier code in the order can be connected to

That is, the device 200 disconnects the NFT of the first style information and the second user identifier code, connects the NFT of the first style information and the third user identifier code, and then connects the NFT of the first style information and the second user identifier code. 2 User identifier codes can be additionally linked. At this time, since the device 200 is in a state in which the first user identifier code and the second user identifier code are connected while the NFT of the first style information is connected to the first user identifier code, the first user identifier code and the second user identifier code are connected. After disconnecting the user identifier code, connecting the third identifier code to the first user identifier code, and connecting the second user identifier code to the third user identifier code, the first user identifier code, the third user identifier code and in the order of the second user identifier code, it may be associated with the NFT of the first style information.

In step S604, when the NFT of the first style information and the third user identifier code are additionally connected, the device 200 uses the distributed ledger of the blockchain network for the NFT of the first style information, the first user identifier code, and the second user. sending the identifier code and the third identifier code to record the first user as the first owner of the first style information and the second user as the second owner of the first style information on the transaction block of the distributed ledger; A third user may be recorded as a third owner of the first style information. When the first user is recorded as the first owner of the first style information, the first user's stake in the first style information is recorded together, and when the second user is recorded as the second owner of the first style information, When the second user's share in the first style information is recorded together, and the third user is recorded as the third owner of the first style information, the third user's share in the first style information may be recorded together. . The share of the first user may be set as a value obtained by dividing the first price by the first price after subtracting the third price from the first price, and the share of the second user may be a value obtained by dividing the first price by the third price. The first ratio may be set, and the share of the third user may be set as the second ratio, which is a value obtained by dividing the first price by the fifth price.

Specifically, the device 200 transmits the first user identifier code, the second user identifier code, and the third user identifier code together with the NFT of the first style information, which is a digital asset encrypted with the distributed ledger of the blockchain network. At this time, on the transaction block of the distributed ledger, the first owner of the NFT of the first style information is designated as the first user and the second owner is designated as the second user. Accordingly, on the transaction block of the distributed ledger, while maintaining the setting of the first user designated as the first owner for the NFT of the first style information and the setting of the second user designated as the second owner, the third user The newly established third owner is recorded as a transaction record, and this transaction record can be verified through each node peer.

In step S605, when the NFT of the first style information and the third user identifier code and the second user identifier code are additionally connected, the device 200 sends the NFT of the first style information to the distributed ledger of the blockchain network, the first user sending the identifier code, the third user identifier code and the second identifier code to record the first user as the first owner of the first style information on the transaction block of the distributed ledger, and the third user as the first owner of the first style information The second owner may be recorded, and the second user may be recorded as the third owner of the first style information.

Specifically, the device 200 transmits the first user identifier code, the third user identifier code, and the second user identifier code together with the NFT of the first style information, which is a digital asset encrypted with the distributed ledger of the blockchain network. At this time, on the transaction block of the distributed ledger, the first owner for the NFT of the first style information is designated as the first user and the second owner is designated as the second user. Accordingly, while maintaining only the setting of the first user designated as the first owner for the NFT of the first style information on the transaction block of the distributed ledger, the third user is newly set as the second owner, and the second user 3 The newly established owner is recorded as a transaction record, and this transaction record can be verified through each node peer.

On the other hand, when the first user, the second user, and the third user are registered as co-investors of the first style information, the device 200 groups the first user, the second user, and the third user to perform a team project. It can be classified as the first team for

Thereafter, the device 200 may assign a role to each of the users classified as the first team. In this case, the device 200 may assign a role to each user in consideration of a team project execution experience, NFT investment experience, preferred work, etc. for each user.

For example, if the team project is a sailing task for investment, and the first user, the second user, and the third user are classified as the first team, the device 200 may determine the first user's stake in the first style information. designates the first user as a captain according to , by designating the third user as a steerer according to the third user's share in the first style information, thereby giving the third user the helmsman role.

Thereafter, the members of the first team who wish to perform the team project may prepare to perform the team project. To this end, the device 200 may provide a virtual space for preparing to perform a team project.

For example, when the team project is a sailing task and the first team wants to perform a sailing task, the device 200 may provide a virtual space in which items necessary for sailing can be purchased before starting the sailing. At this time, in the virtual space, shops selling items such as water, food, repair kits, life preservers, and sonar are placed in the village. By purchasing items, you can prepare to work on a team project.

Thereafter, the device 200 may check whether the preparation for performing the team project is completed. In this case, when all team members belonging to the first team that want to perform the team project complete the preparation for performing the team project, the device 200 may confirm that the preparation for performing the team project is completed.

When it is confirmed that the device 200 is ready to perform the team project, the team members of the first team who want to perform the team project may perform the team project. To this end, the device 200 may provide a virtual space for performing a team project.

For example, when the team project is a sailing task, and all members of the first team are ready for the sailing task, the device 200 navigates the first team's sailing vessel in the virtual space to execute the sailing game can do.

Thereafter, the device 200 may check whether a problem situation has occurred while the first team is performing the team project.

For example, it is possible to check whether a problem has occurred due to a storm, a tsunami, etc. while the team project is a sailing task and the sailing ship of the first team is sailing.

When it is confirmed that a problem situation has occurred, the device 200 may acquire reaction information selected according to the problem situation for each user. Here, the reaction information is information indicating a reaction selected by the user in response to a problem situation.

For example, if the team project is a sailing task, and while the sailing ship of the first team is sailing, a problem situation about the risk of sinking due to a storm occurs, the device 200 may retrieve the selected reaction information from each of the members of the first team can be obtained In this case, the device 200 may obtain reaction information for each user by classifying roles assigned to each of the team members of the first team.

For example, when the role of the first user is a captain and the first user's role is a captain and warns other team members of a dangerous situation in response to the reaction of the first user performing the role of the captain in case of sinking, the first user's reaction is the first When the course of the sailing vessel is changed due to the reaction of the second user who is acquired as the user's reaction information, the role of the second user is the navigator, and the role of the navigator in case of sinking danger, the reaction of the second user is the reaction information of the second user can be obtained with

The device 200 may check whether the team project performed by the first team has ended.

According to an embodiment, the team project may be terminated when the entire team project is completed. For example, if the team project is a voyage task, the voyage task may be terminated when the voyage arrives at the destination. can be

When the device 200 determines that the team project is not finished, the team members of the team who want to perform the team project may continue to perform the team project.

When it is confirmed that the team project is finished, the device 200 may evaluate whether the task of the role assigned to each user was performed well for each situation, based on the reaction information obtained for each problem situation.

For example, if the first team has performed a team project for the navigation task, the first user is the captain in the first team, and the second user is the navigator in the first team, the device 200 is the first When the first problem situation occurs while the team is performing the team project, the 1-1 reaction information generated by the reaction of the first user acting as the captain to solve the first problem situation is obtained, and the first problem situation is solved. In order to solve the situation, it is possible to acquire 1-2 response information generated as a response of the second user serving as a navigator. Thereafter, when the second problem situation occurs while the first team performs the team project, the device 200 generates the second 2-1 generated as a response of the first user serving as the captain in order to solve the second problem situation. It is possible to acquire reaction information and acquire 2-2 reaction information generated by the reaction of the second user who serves as a navigator to solve the second problem situation.

Thereafter, when the team project being performed by the first team is finished, the device 200 performs the task of the first user who serves as the captain according to the situation based on the 1-1 reaction information and the 2-1 reaction information. It can be evaluated whether the performance was performed, and based on the 1-2 response information and the 2-2 response information, it can be evaluated whether the task of the second user serving as the navigator was performed well for each situation.

When evaluating whether the task of the device 200 or the role assigned to each user is handled well for each situation, quantitative evaluation may be performed according to how quickly and accurately reacted based on a quantitative index preset according to the type of role.

When the team project being performed by the first team is finished, the device 200 may acquire conversation information of the first team input into the chat window while the team project is being performed. To this end, a chat window may be provided for team members to exchange opinions while performing a team project.

Thereafter, the device 200 may extract the conversation information of the first user input by the first user from the conversation information of the first team.

For example, when the first user and the second user are the first team, the conversation information of the first team includes the conversation input by the first user and the conversation input by the second user, and the device 200 is the first team. Only the conversation input by the first user may be selected from the conversation information of the first team, and the conversation information of the first user may be extracted.

Thereafter, the device 200 may distinguish a word having an active meaning in the conversation of the first user based on the conversation information of the first user.

For example, if it is confirmed that “Let’s change the route to the right” in the conversation of the first user, the device 200 may “change the route”, “to the right”, and “Let’s change the route” in the conversation of the first user. can classify each word, and among the classified words, “let’s change” can be classified as a word with an active meaning.

Thereafter, the device 200 may check whether a word having an active meaning exists in the conversation of the first user within a reference time from the occurrence of the problem situation. Here, the reference time may be set differently depending on the embodiment.

For example, if the reference time is set to 10 seconds, the device 200 checks whether there is a word having an active meaning in the conversation of the first user within 10 seconds after the first problem situation occurs, and the second 2 It is possible to check whether there is a word having an active meaning in the conversation of the first user within 10 seconds after the occurrence of the problem situation.

Thereafter, the device 200 may calculate the number of problem situations in which a word having an active meaning appears within a reference time in the first user's conversation as the first number of times.

For example, a first problem situation, a second problem situation, and a third problem situation occur while performing the team project, and the device 200 actively participates in the conversation of the first user within a reference time after the first problem situation occurs. It is confirmed that there is a word having the meaning of , and it is confirmed that a word having an active meaning exists in the first user's conversation within the reference time after the occurrence of the second problem situation, and the reference time after the occurrence of the third problem situation If it is confirmed that the word having an active meaning does not exist in the first user's conversation within can be calculated.

The device 200 may distinguish a word having a passive meaning in the conversation of the first user based on the conversation information of the first user.

For example, when it is confirmed that there is “yes then” in the first user’s conversation, the device 200 may classify each word as “yes” and “then” in the first user’s conversation, and Among the words, “then” can be classified as a word with a passive meaning.

Thereafter, the device 200 may check whether a word having a passive meaning exists in the conversation of the first user within a reference time from the occurrence of the problem situation.

For example, if the reference time is set to 10 seconds, the device 200 checks whether there is a word having a passive meaning in the first user's conversation within 10 seconds after the first problem situation occurs, and the second 2 It is possible to check whether there is a word having a passive meaning in the conversation of the first user within 10 seconds after the occurrence of the problem situation.

Thereafter, the device 200 may calculate the number of problem situations in which the word having a passive meaning appears within the reference time in the first user's conversation as the second number of times.

For example, a first problem situation, a second problem situation, and a third problem situation occur while performing the team project, and the device 200 is passive in the conversation of the first user within a reference time after the first problem situation occurs. It is confirmed that there is a word having a meaning of , and it is confirmed that a word having a passive meaning exists in the first user's conversation within a reference time after the occurrence of the second problem situation, and a reference time after the occurrence of the third problem situation If it is confirmed that a word having a passive meaning in the first user's conversation within The number of times can be counted 3 times.

The device 200 may classify words having an important meaning in solving a problem situation in the conversation of the first user based on the conversation information of the first user. Here, words having an important meaning in solving a problem situation may be set differently for each problem situation.

For example, if it is confirmed that “Let’s change the route to the right” in the conversation of the first user, the device 200 may “change the route”, “to the right”, and “Let’s change the route” in the conversation of the first user. can classify each word, and among the classified words, “to the right” can be classified as a word having an important meaning.

Thereafter, the device 200 may check whether a word having an important meaning exists in the first user's conversation within a reference time from the occurrence of the problem situation.

For example, if the reference time is set to 10 seconds, the device 200 determines whether there is a word having an important meaning in the first problem situation in the conversation of the first user within 10 seconds after the first problem situation occurs. and, within 10 seconds after the occurrence of the second problem situation, whether there is a word having an important meaning in the second problem situation in the conversation of the first user may be confirmed.

Thereafter, the device 200 may calculate the number of problem situations in which the word having an important meaning in the first user's conversation appears within the reference time as the third number.

For example, a first problem situation, a second problem situation, and a third problem situation occur while performing the team project, and the device 200 removes the first problem situation from the conversation of the first user within a reference time after the first problem situation occurs. It is confirmed that a word having an important meaning in the first problem situation exists, and it is confirmed that a word having an important meaning in the second problem situation does not exist in the first user's conversation within a reference time after the second problem situation occurs, If it is confirmed that the word having an important meaning in the third problem situation does not exist in the first user's conversation within the reference time after the third problem situation occurs, since the word having an important meaning only in the first problem situation appears within the reference time , the third number of times can be calculated as 1 time.

Thereafter, the device 200 evaluates the leadership of the first user through the first number of times, evaluates the followness of the first user through the second number, and evaluates the crisis coping ability of the first user through the third number. can

For example, when a total of 10 problem situations occur in performing the team project, the device 200 evaluates the leadership of the first user as 80 points when the first number of times is 8, and the second number of times is 6 When the circuit is confirmed, the follow-up of the first user is evaluated as 60 points, and when the third number of times is confirmed as 4 times, the crisis coping ability of the first user can be evaluated as 40 points.

Through this, the device 200 may perform a qualitative evaluation on leadership, followship, and crisis coping ability through natural language processing in the user's conversation, and quantify each item to provide a visualized evaluation result to the user.

7 is an exemplary diagram of a configuration of an apparatus according to an embodiment.

The device 200 according to an embodiment includes a processor 210 and a memory 220 . The processor 210 may include at least one of the devices described above with reference to FIGS. 1 to 6 , or perform at least one method described above with reference to FIGS. 1 to 6 . A person or organization using the apparatus 200 may provide a service related to some or all of the methods described above with reference to FIGS. 1 to 6 .

The memory 220 may store information related to the above-described methods or a program in which methods to be described below are implemented. The memory 220 may be a volatile memory or a non-volatile memory.

The processor 210 may execute a program and control the device 200 . The code of the program executed by the processor 210 may be stored in the memory 220 . The device 200 may be connected to an external device (eg, a personal computer or a network) through an input/output device (not shown), and may exchange data through wired/wireless communication.

The embodiments described above may be implemented by a hardware component, a software component, and/or a combination of a hardware component and a software component. For example, the apparatus, methods and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate (FPGA). array), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions, may be implemented using one or more general purpose or special purpose computers. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For convenience of understanding, although one processing device is sometimes described as being used, one of ordinary skill in the art will recognize that the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that may include For example, the processing device may include a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as parallel processors.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiment, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

The software may comprise a computer program, code, instructions, or a combination of one or more thereof, which configures a processing device to operate as desired or is independently or collectively processed You can command the device. The software and/or data may be any kind of machine, component, physical device, virtual equipment, computer storage medium or device, to be interpreted by or to provide instructions or data to the processing device. , or may be permanently or temporarily embody in a transmitted signal wave. The software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

As described above, although the embodiments have been described with reference to the limited drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (3)

A method of providing an NFT asset trading service of user style information based on DID, performed by a device, the method comprising:
receiving identification information of the first user from the first user terminal when the identity of the first user is verified through the DID of the first user in the first user terminal;
obtaining a style history of the first user based on the identification information of the first user;
providing the style history of the first user to the first user terminal;
receiving, from the first user terminal, an NFT-ization request for a first style that is any one of the first user's style histories;
extracting first style information from the style history of the first user;
generating an NFT of the first style information by issuing an NFT for the first style information;
extracting a first user identifier code from the identification information of the first user generated through the DID of the first user;
associating the NFT of the first style information with the first user identifier code;
transmitting the NFT of the first style information and the first user identifier code to a distributed ledger of a blockchain network to record the first user as the owner of the first style information on a transaction block of the distributed ledger;
receiving a joint investment request for NFT of the first style information from a second user terminal;
When the price for the NFT of the first style information is set as the first price, and the investable amount of the first price is set as the second price, a deposit request for a part of the second price is sent to the second price. 2 transmitting to the user terminal;
extracting a second user identifier code from the identification information of the second user generated through the DID of the second user when it is confirmed that the amount for the third price is deposited as the investment amount of the second price;
further linking the NFT of the first style information with the second user identifier code;
transmit the NFT of the first style information, the first user identifier code and the second user identifier code to the distributed ledger, so as to place the first user on the transaction block of the distributed ledger as the first style information of the first style information recording as the owner and recording the second user as the second owner of the first style information;
receiving a joint investment request for NFT of the first style information from a third user terminal;
calculating a fourth price by subtracting the third price from the second price;
transmitting a deposit request for a portion of the fourth price to the third user terminal;
extracting a third user identifier code from the identification information of the third user generated through the DID of the third user when it is confirmed that the amount for the fifth price has been deposited as the investment amount among the fourth prices;
calculating a first ratio that is a ratio that the third price occupies in the first price, and calculating a second ratio that is a ratio that the fifth price occupies in the first price;
if it is determined that the first ratio is greater than the second ratio, further linking the NFT of the first style information with the third user identifier code;
When the NFT of the first style information and the third user identifier code are further linked, the NFT of the first style information, the first user identifier code, the second user identifier code, and the third user to the distributed ledger sending an identifier code to record the first user as the first owner of the first style information and the second user as the second owner of the first style information on the transaction block of the distributed ledger; recording the third user as a third owner of the first style information;
If it is determined that the second ratio is greater than the first ratio, the NFT of the first style information and the second user identifier code are disconnected, and the NFT of the first style information and the third user identifier code are released. after further linking, further linking the NFT of the first style information with the second user identifier code; and
When the NFT of the first style information and the third user identifier code and the second user identifier code are further connected, the NFT of the first style information, the first user identifier code, and the third user to the distributed ledger sending an identifier code and the second user identifier code to record the first user as the first owner of the first style information on the transaction block of the distributed ledger, and the third user as the first owner of the first style information recording as the second owner and recording the second user as the third owner of the first style information;
How to provide NFT asset trading service of DID-based user style information. The method of claim 1,
After recording the first user as the owner of the first style information,
receiving a purchase request for the NFT of the first style information from a second user terminal;
transmitting a deposit request for the first price to the second user terminal when the price for the NFT of the first style information is set as the first price;
extracting a second user identifier code from the identification information of the second user generated through the DID of the second user when it is confirmed that the amount for the first price has been deposited;
disconnecting the NFT of the first style information and the first user identifier code, and linking the NFT of the first style information and the second user identifier code; and
sending the NFT of the first style information and the second user identifier code to the distributed ledger to record the second user as a new owner of the first style information on a transaction block of the distributed ledger doing,
How to provide NFT asset trading service of DID-based user style information. delete

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