JP2024038834A - Method and device for providing service for platform using blockchain-based did - Google Patents

Abstract

To provide a service to a user of a platform using a blockchain-based DID.SOLUTION: A service providing method comprises: receiving an object registration request for requesting registration of at least one object with a platform from a user terminal referring to a terminal of a user who has signed up for membership with the platform; acquiring history information related to a trading history and ownership information related to ownership of the object for which registration has been requested, and issuing a blockchain-based NFT for the at least one object; generating a blockchain-based DID for the at least one object by causing each piece of NFT information to be reflected in a structure of the blockchain-based DID so as to be classified according to preset criteria; and providing a service related to trading for the at least one object to multiple users, who have signed up for membership with the platform, by using the blockchain-based DID.SELECTED DRAWING: Figure 3

Description

The present invention relates to a service providing method and apparatus for a platform that uses a blockchain-based DID (Decentrized Identifier), and more specifically, the present invention relates to a service provision method and apparatus for a platform that uses a blockchain-based DID (Decentrized Identifier). The present invention relates to a method and apparatus for providing services to users of.

Recently, with the development of blockchain-based technology and its application to various fields, services have also become more diverse. In particular, blockchain-based technology has strengths in terms of security, and is being actively applied to service fields where security is important, such as finance. In addition, as interest in NFT (Non-fungible tokens) regarding blockchain-based technology rapidly increases, NFTs (Non-fungible tokens) are being expanded to include services that can prove ownership, copyright, and other rights and allow transactions.

In this regard, NFTs are increasingly being applied to services related to blockchain-based technology, and as a result, issues related to security and stability are becoming even more important. On the other hand, most service-related platforms apply a membership system that supports users to use the service by signing up for membership, and thereby allows users to use an ID (Identifier), which is a unique identifier issued to them. They use the service.

However, IDs, which are unique identifiers used by platforms related to services, are troublesome to manage users' personal information and there is a risk of leakage, so platforms that provide the Internet or applications do not require official certificates. However, the problem is that it is extremely troublesome for users.

An object of the present invention to solve the above-mentioned problems is to provide a method for providing services to platform users using DID in a platform operated through a blockchain-based network. It is in.

Another object of the present invention to solve the above-mentioned problems is to provide an apparatus for providing services to platform users using DID in a platform operated through a blockchain-based network. There is a particular thing.

To achieve the above object, a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention provides a service provided by a service providing device for a platform using a blockchain-based DID. The providing method includes the steps of: receiving an object registration request requesting registration of at least one object to the platform from a user terminal, meaning a terminal of a user who has subscribed to the platform; issuing a blockchain-based NFT for the at least one object by acquiring ownership information regarding ownership of the object and historical information regarding the transaction history; and adding each information of the NFT to the structure of the blockchain-based DID. generating a blockchain-based DID for the at least one object according to a predetermined standard, and membership is added to the platform using the blockchain-based DID. providing a plurality of users with services related to transactions with respect to the at least one object.

Here, the step of issuing the blockchain-based NFT includes object information, ownership information, and history information regarding at least one object that the user terminal requests to register on the platform in response to the object registration request. obtaining object information, ownership information, and history information regarding the at least one object from the user terminal and issuing a blockchain-based NFT for the at least one object; The method further includes matching ID information used by the user terminal on a platform with information regarding the blockchain-based NFT address of the at least one object and transmitting the matched information to the user terminal.

Here, the step of generating the blockchain-based DID includes dividing each piece of information included in the issued NFT so as to be classified according to the preset criteria, and generating the blockchain-based DID. generating a plurality of NFT information used for the blockchain-based DID for the at least one object by converting the plurality of NFT information to correspond to a plurality of information items regarding the blockchain-based DID; generating a DID; updating values for identification criteria for the user terminal such that the blockchain-based DID is used in the platform instead of ID information of the user terminal; transmitting a chain-based DID to the user terminal, and supporting the user terminal in the platform to use the blockchain-based DID.

Here, the step of generating the plurality of NFT information includes the step of generating first NFT information representing the content file itself for at least one object corresponding to the issued blockchain-based NFT; generating second NFT information meaning a title, an object creator, and an address information where the content file itself is stored for at least one object corresponding to a blockchain-based NFT, and the issued blockchain generating third NFT information representing the ownership information, the history information, and address information where the second NFT information is stored for at least one object corresponding to the underlying NFT;

Here, the step of generating the blockchain-based DID includes converting ID information used by the user terminal into a unique identifier item among a plurality of items related to the blockchain-based DID. a step of generating an item, and generating a second item by converting the plurality of NFT information so that it is defined and stored in an item of a DID document among a plurality of items related to a blockchain-based DID; The method includes the steps of:

Here, the unique identifier item includes a DID Scheme area where the blockchain-based DID type is defined as DID, and a DID Method area where information regarding the DID document is defined. and a DID Method-Specific Identifier in which an identifier used in the DID method area is defined.

Here, the items of the DID document are defined by dividing the contents indicated by the multiple NFT information and information regarding the blocks in which each NFT information is stored among the multiple blocks included in the blockchain-based network.

Here, the object is a sound source.

According to the present invention, a service provision method for a platform that uses a blockchain-based DID has the effect of issuing a DID, which is a unique identifier that guarantees security, reliability, and economic efficiency, to users who use the platform. In this regard, security, reliability, and economic efficiency are similarly guaranteed for information related to NFT of objects registered on the platform.

FIG. 1 is a hardware block diagram of a service providing apparatus that performs a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention. 1 is a conceptual diagram illustrating an environment in which a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention is performed; FIG. 1 is a flowchart illustrating a method for providing a service for a platform using a blockchain-based DID according to an embodiment of the present invention. 2 is a flowchart illustrating a method for issuing a blockchain-based NFT in a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention. 2 is a flowchart illustrating a method for generating a blockchain-based DID in a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention. 5 is a flowchart illustrating a method of generating NFT information in a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention. 5 is a flowchart illustrating a method of generating a plurality of items for a DID in a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention.

Since the present invention is capable of various modifications and embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, it is to be understood that this is not intended to limit the invention to any particular embodiment, but rather includes all modifications, equivalents, and alternatives falling within the spirit and technical scope of the invention. Like reference numerals are used to refer to like components throughout the discussion of the figures.

Although terms such as first, second, A, and B are used to describe various components, the components are not limited to these terms. These terms are only used to distinguish one component from another. For example, the first component may be named the second component, and similarly the second component may also be named the first component, without departing from the scope of the present invention. The term and/or includes any combination of a plurality of related listed items or a plurality of related listed items.

When a component is referred to as being "coupled" or "connected" to another component, it may be directly coupled or connected to the other component, but there may be no intervening other components. It should be understood that there may be other components. On the other hand, when a component is referred to as being "directly coupled" or "directly connected" to another component, it is to be understood that there are no intervening other components.

The terminology used in this application is merely used to describe particular embodiments and is not intended to limit the invention. A singular expression includes a plural expression unless the context clearly dictates otherwise. In this application, terms such as "comprising" or "having" are used to specify the presence of a feature, number, step, act, component, part, or combination thereof that is recited above in the specification. It is to be understood that this does not exclude the existence or possibility of the addition of one or more other features, figures, steps, acts, components, parts or combinations thereof.

Unless defined differently, all terms, including technical or scientific terms, used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. has. The same terms as defined in commonly used dictionaries should be construed to have meanings consistent with the meanings they have in the context of the relevant art, and unless explicitly defined in this application, ideally or not parsed in an overly formal sense.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 to 7).

First, the "object" described in connection with the service providing method and service providing device for a platform using blockchain-based DID according to an embodiment of the present invention refers to It refers to things that have rapidly increased in asset value and are attracting attention as investment targets.

In addition, an "object" described in connection with a service providing method and a service providing device for a platform using a blockchain-based DID according to an embodiment of the present invention refers to an "object" that is not an actual virtual space (for example, a metaverse). It preferentially refers to objects such as works of art and real estate that exist in (spaces such as the Metverse).

Furthermore, an "object" described in connection with a service providing method and a service providing device for a platform using a blockchain-based DID according to an embodiment of the present invention may refer to an "object" that is not a real virtual space (for example, an online game, etc.). It may also preferentially refer to objects such as items or contents existing in a space, etc.).

In particular, the concepts of "copyright" and "ownership" apply to the "object" described in connection with the service providing method and service providing device for a platform using blockchain-based DID according to an embodiment of the present invention. It may preferentially refer to objects such as "authored works", such as "works" such as "sound sources" and "music". In embodiments of the present invention, the "object" is preferably a "sound source".

FIG. 1 is a hardware block diagram of a service providing apparatus that performs a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention.

Referring to FIG. 1, a service providing apparatus 100 for performing a service providing method for a blockchain-based DID platform according to an embodiment of the present invention includes at least one processor for performing a service providing method. 110 and a memory 120 for storing instructions that direct at least one processor to perform at least one step.

Here, at least one processor 110 refers to a central processing unit (CPU), a graphics processing unit (GPU), or a special purpose processor on which the method according to an embodiment of the present invention is performed. do. The memory 120 and the storage device 160 each include at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory 120 may include at least one of a read only memory (ROM) and a random access memory (RAM).

In addition, the service providing apparatus 100 that performs the service providing method for a platform using a blockchain-based DID according to the present invention includes a transceiver 130 that performs communication via a wireless network. In addition, the service providing device 100 that performs the service providing method for a platform using a blockchain-based DID further includes an input interface device 140, an output interface device 150, a storage device 460, and the like. The respective components included in the server 100 are connected by a bus 170 to communicate with each other.

Here, at least one step refers to a step related to a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention, and more specifically, The method may further include steps related to a method of operating the service providing apparatus 100 to perform a service providing method for a platform that utilizes a platform.

Hereinafter, a method of using blockchain-based DID performed by a service providing apparatus 100 that performs a service providing method for a platform using blockchain-based DID according to an embodiment of the present invention described with reference to FIG. The environment regarding the service provision method for the platform will be explained in more detail with reference to FIG.

FIG. 2 is a conceptual diagram illustrating an environment in which a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention is performed.

Referring to FIG. 2, a service providing method for a platform using blockchain-based DID according to an embodiment of the present invention includes a service providing device 200, which refers to the service providing device 100 described with reference to FIG. , is performed by the user terminal 300 and the server 400, but more specifically, is performed by the leading role of the service providing device 200.

First, the service providing device 200 transmits and receives information required to perform a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention to a user terminal 300 and a server 400. The user terminal 300 and the server 400 are linked to each other based on communication so as to make a request.

On the other hand, the user terminal 300 refers to a device such as a terminal of a user who uses a service, but more specifically, it refers to a device such as a user's smart phone or PC that includes a communication function. means. In addition, when the user terminal 300 receives a request for information required to perform a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention from the service providing device 200, the user terminal 300 performs the corresponding information request. The information is transmitted to the service providing device 200.

Furthermore, the server 400 refers to a device such as a server that operates or manages a platform that utilizes the blockchain-based DID of the present invention. etc.) means a device. At this time, the service providing apparatus 200 has a function of storing and managing information generated by a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention.

Regarding this, when the server 400 receives a request for information required to perform a service providing method for a platform using a blockchain-based DID according to an embodiment from the service providing device 200, the server 400 provides the corresponding information to the service provider. The information is transmitted to the providing device 200. In addition, when the server 400 receives a request to store information generated by the service providing method for a platform using blockchain-based DID according to an embodiment of the present invention, the server 400 stores the corresponding information in the server 400. You may.

Although the service providing device 200 and the server 400 are described as being physically separated from each other, this is not necessarily the case. In other words, the service providing apparatus 200 may be included in the server 400 or may be formed in the form of a module that functions as the service providing apparatus 200 within the server 400.

Below, in the service providing apparatus 100 described with reference to FIG. 1 and the service providing apparatus 200, user terminal 300, and server 400 described with reference to FIG. 2, a blockchain-based DID according to an embodiment of the present invention will be described. A detailed description of the process of providing a service for a platform using a platform will be described in detail with reference to FIGS. 3 to 7.

FIG. 3 is a flowchart illustrating a method for providing services for a platform using a blockchain-based DID according to an embodiment of the present invention.

Referring to FIG. 3, a service providing method for a platform using blockchain-based DID according to an embodiment of the present invention is described with reference to the service providing apparatus 100 described with reference to FIG. 1 and with reference to FIG. 2. This is performed by the service providing device 200, the user terminal 300, and the server 400, but more specifically, the service providing device 100, 200 plays a leading role.

First, in step S100, the service providing apparatus receives an object registration request requesting the platform to register at least one object from a user terminal, which is a terminal of a user who has subscribed to the platform.

Specifically, the user terminal of a user who needs to register at least one object in the platform according to an embodiment of the present invention subscribes to membership through the platform server, and the ID of the user terminal used in the platform is obtained from the platform server. Receive information. Next, the user terminal transmits an object registration request requesting registration of at least one object to the service providing apparatus. Thereby, the service providing device receives an object registration request from the user terminal.

Next, the service providing device obtains ownership information regarding the ownership of the object for which registration is requested and history information regarding the transaction history, and issues a blockchain-based NFT for at least one object (S200).

Here, the specific process of acquiring ownership information regarding the ownership of an object registered by the service providing device and historical information regarding the transaction history and issuing a blockchain-based NFT for at least one object will be described below. This will be explained in more detail with reference to FIG.

FIG. 4 is a flowchart illustrating a method for issuing a blockchain-based NFT in a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention.

Referring to FIG. 4, a service providing apparatus performing a service providing method for a platform using blockchain-based DID according to an embodiment of the present invention requests a user terminal to register with the platform in response to an object registration request. S210: requesting object information, ownership information, and history information regarding at least one object.

First, the service providing device requests the platform to register at least one object as object information, which is information about a content file, a title for the object, and a creator of the object. The service providing device also requests information regarding the owner of the object and the date on which the ownership was changed as ownership information. The service providing device also requests information regarding the number of times the object has been traded and the amount of each transaction as history information.

Next, the service providing apparatus obtains object information, ownership information, and history information regarding at least one object from the user terminal, and issues a blockchain-based NFT for the at least one object (S220).

Here, the service providing device issues a blockchain-based NFT by setting it to include object information, ownership information, and history information regarding at least one object acquired from a user terminal. Specifically, object information, ownership information, and history information regarding at least one object are stored based on a plurality of blocks included in a blockchain-based network.

Next, the service providing apparatus matches ID information used by the user terminal on the platform with information regarding the blockchain-based NFT address of at least one object, and transmits the matched information to the user terminal (S230).

Specifically, the service providing device requests the platform server for ID information generated for the user terminal. Thereby, the platform server receives a request for ID information generated for the user terminal from the service providing device. Next, the platform server verifies the ID information generated for the user terminal and transmits the verified ID information to the service providing device.

Next, the service providing device receives ID information generated for the user terminal from the platform server, and matches the received ID information with the blockchain-based NFT issued for at least one object. do. Next, the service providing device transmits the matched ID information of the user terminal and the blockchain-based NFT to the user terminal.

Further, with reference to FIG. 3, a service providing device that performs a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention adds each piece of NFT information to the structure of a blockchain-based DID in advance. S300: generating a blockchain-based DID for at least one object according to the classification based on the set criteria;

Here, the service providing device generates a blockchain-based DID for at least one object by reflecting each information of the NFT in the structure of the blockchain-based DID so as to be classified according to preset criteria. The process will be explained in more detail below with reference to FIG.

FIG. 5 is a flowchart illustrating a method for generating a blockchain-based DID in a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention.

Referring to FIG. 5, a service providing device that performs a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention sets each information included in an issued NFT in advance. S310, the NFT information is divided according to the specified criteria and a plurality of pieces of NFT information used to generate a blockchain-based DID are generated.

Here, each piece of NFT information included in the NFT issued by the service providing device is divided according to preset criteria, and multiple pieces of NFT information are used to generate a blockchain-based DID. The specific process of generating .

FIG. 6 is a flowchart illustrating a method for generating NFT information in a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention.

Referring to FIG. 6, a service providing device performing a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention includes at least one object corresponding to an issued blockchain-based NFT. S311 generating first NFT information indicating the content file itself for the content file.

In detail, the first NFT information generated by the service providing device means "NFT media data" among the information related to NFT, but more specifically, the first NFT information generated by the service providing device means "NFT media data" among the information related to NFT. Refers to digital content itself.

In other words, the first NFT information generated by the service providing device is generated based on object information obtained in advance from the user terminal.

Next, the service providing device generates second NFT information, which means the title of at least one object corresponding to the issued blockchain-based NFT, the creator of the object, and the address information where the content file itself is stored. S312.

Here, the second NFT information generated by the service providing device means "NFT meta data" among the information related to NFT, but more specifically, the second NFT information is the title of the object corresponding to the issued NFT, means the description, creator, and location (eg, address, etc.) where the original digital content is stored.

In other words, the second NFT information generated by the service providing device is generated based on the object information and ownership information obtained in advance from the user terminal.

Next, the service providing device generates third NFT information, which refers to ownership information, history information, and address information where the second NFT information is stored regarding at least one object corresponding to the issued blockchain-based NFT. S313.

Here, the third NFT information generated by the service providing device means "NFT Smart Contract" among the information related to NFT, but more specifically, the third NFT information generated by the service providing device means "NFT Smart Contract" among the information related to NFT. , the date the ownership changed, the number of times the object was traded, and the amount of each transaction.

In other words, the third NFT information generated by the service providing device is generated based on object information, ownership information, and history information obtained in advance from the user terminal.

Further, with reference to FIG. 5, a service providing apparatus performing a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention converts a plurality of NFT information into a plurality of pieces of information regarding a blockchain-based DID. S320: converting the item to correspond to the item and generating a blockchain-based DID for the at least one object.

Here, the specific process of generating a blockchain-based DID for at least one object by converting a plurality of NFT information to correspond to a plurality of information items related to a blockchain-based DID in the service providing device is as follows: It will be explained in more detail below with reference to FIG.

FIG. 7 is a flowchart illustrating a method for generating a plurality of items for a DID in a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention.

Referring to FIG. 7, a service providing apparatus for performing a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention transmits ID information used by a user terminal to a plurality of ID information related to a blockchain-based DID. S321 to generate a first item by converting the items into unique identifier items.

Here, the unique identifier item meaning the first item is a DID scheme area where the blockchain-based DID type is defined as DID, a DID method area where information regarding the DID document is defined, and a DID method area. and a DID method specific identifier area in which identifiers used in the DID method are defined.

For example, the unique identifier item meaning the first item has the form "Scheme:DID Method:Did Method Specific Identifier". At this time, "Scheme" is defined as a fixed value of "did", and "DID Method" is defined as the method by which DID and DID documents are generated and updated. Defined by value.

Next, the service providing device generates a second item by converting the plurality of NFT information to be defined and stored in the item of the DID document among the plurality of items related to the blockchain-based DID (S322).

Here, the item of the DID document that means the second item is related to the contents indicated by the plurality of NFT information and the block in which each NFT information is stored among the plurality of blocks included in the blockchain-based network. information is classified and defined for each NFT information.

For example, the item of the DID document, which means the second item, is defined for each NFT information based on a method such as JSON (JavaScript Object Notation), but in addition, a cryptographic public key and DID are used for authentication. It also includes information on the method used.

Further, with reference to FIG. 5, a service providing apparatus performing a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention uses a blockchain-based DID instead of ID information of a user terminal. S330 updating the values for the identification criteria for the user terminal to be used by the platform.

Specifically, the service providing device transmits information regarding the blockchain-based DID generated for the user terminal to the platform server, thereby converting the ID generated for the user terminal into the blockchain-based DID. Ask the platform's servers to make changes and save them.

Thereby, the platform server receives information regarding the blockchain-based DID generated for the user terminal from the service providing device, and transfers the ID information generated for the user terminal to the blockchain-based DID received from the service providing device. Change to the DID of the base and save. Next, the platform server transmits a message to the service providing device informing that the blockchain-based DID for the user terminal has been saved.

Next, the service providing device receives a message from the platform server notifying that the blockchain-based DID for the user terminal has been saved, and thereby the platform server has saved the blockchain-based DID for the user terminal. I judge that. According to this method, the service providing apparatus updates the value of the identification standard for the user terminal so that the platform uses the blockchain-based DID instead of the ID information of the user terminal.

Next, the service providing apparatus transmits the blockchain-based DID for the user terminal to the user terminal, and the platform supports the user terminal to use the blockchain-based DID in step S340.

Here, the user terminal receives DID information, which is a blockchain-based DID or information related to the DID, generated for the user terminal from the service providing device. Next, the user terminal uses the blockchain-based DID or information regarding the DID received from the service providing device in place of the ID information previously received from the platform server during membership registration.

Further, with reference to FIG. 3, a service providing apparatus for performing a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention includes a service providing device that performs a service providing method for a platform using a blockchain-based DID. S400: providing a service related to a transaction for at least one object to a plurality of users;

Specifically, when a service related to a transaction is generated for the object by multiple users who have subscribed to the platform for multiple objects registered on the platform, the service providing device is configured to A blockchain-based NFT is issued based on the content, and a blockchain-based DID is updated based on the issued blockchain-based NFT.

In other words, the blockchain-based DID according to an embodiment of the present invention includes NFT information about the object, but the NFT information about the object is changed and changed based on the content of the service regarding the transaction that occurred for the object. This means that the blockchain-based DID will be updated based on the NFT information obtained.

By the above-described method, a service providing device that performs a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention provides primary ID information to a user who subscribes to the platform. In the process of generating and distributing blockchain-based NFTs and secondarily issuing blockchain-based NFTs, blockchain-based DIDs are generated and ID information is changed to DID information for use.

Accordingly, a service providing apparatus performing a service providing method for a platform using a blockchain-based DID according to an embodiment of the present invention may provide information regarding objects while a user uses a service provided through the platform. guarantee the security, reliability, and economic efficiency of services.

The method according to the present invention is embodied in the form of program instructions executed by various computer means and recorded on a computer readable medium. Computer readable media may include program instructions, data files, data structures, etc., alone or in combination. The program instructions recorded on the computer-readable medium may be those specially designed and constructed for the present invention, or may be those known and available to those skilled in the art of computer software.

Examples of computer readable media include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions may include not only machine language code, such as that produced by a compiler, but also high-level language code that is executed by a computer using an interpreter or the like. The hardware devices described above are configured to operate as at least one software module to carry out the operations of the present invention, and vice versa.

In addition, all or part of the configurations and functions of the methods and devices described above may be combined or separated.

Although the present invention has been described above with reference to preferred embodiments thereof, those skilled in the art can modify the present invention in various ways without departing from the spirit and scope of the invention as set forth in the claims below. It should be understood that modifications and changes may be made.

100: Service providing device 110: Processor 120: Memory 130: Transmitting/receiving device 140: Input interface device 150: Output interface device 160: Storage device 170: Bus 200: Service providing server 300: User terminal 400: Server

Claims (5)

A service provision method performed by a service provision device for a platform that uses a blockchain-based DID (Decentrized Identifier), the method comprising:
receiving an object registration request requesting registration of at least one object to the platform from a user terminal, which is a terminal of a user who has subscribed to the platform;
obtaining ownership information regarding the ownership of the object for which registration is requested and historical information regarding the transaction history, and issuing a blockchain-based NFT for the at least one object;
generating a blockchain-based DID for the at least one object by reflecting each piece of information of the NFT in the structure of the blockchain-based DID so as to be classified according to preset criteria;
A service providing method comprising the step of providing a service related to transactions with respect to the at least one object to a plurality of users who have subscribed to the platform using the blockchain-based DID. The step of issuing the blockchain-based NFT includes:
requesting object information, ownership information, and history information regarding at least one object requested to be registered with the platform from the user terminal in response to the object registration request;
obtaining object information, ownership information, and history information regarding the at least one object from the user terminal and issuing a blockchain-based NFT for the at least one object;
2. The method according to claim 1, further comprising the step of matching ID information used by the user terminal on a platform with information regarding a blockchain-based NFT address of the at least one object and transmitting the matched information to the user terminal. Method of providing services as described. The step of generating the blockchain-based DID includes:
dividing each piece of information included in the issued NFT so as to be classified according to the preset criteria, and generating a plurality of pieces of NFT information used to generate the blockchain-based DID;
converting the plurality of NFT information to correspond to a plurality of information items regarding the blockchain-based DID to generate a blockchain-based DID for the at least one object;
updating a value for an identification criterion for the user terminal so that the blockchain-based DID is used in the platform instead of ID information of the user terminal;
2. The method of claim 2, further comprising the step of transmitting a blockchain-based DID for the user terminal to the user terminal, and supporting the user terminal to use the blockchain-based DID on the platform. The service provision method described in. The step of generating the plurality of NFT information includes:
generating first NFT information representing the content file itself for at least one object corresponding to the issued blockchain-based NFT;
generating second NFT information representing a title for at least one object corresponding to the issued blockchain-based NFT, an object creator, and address information where the content file itself is stored;
generating third NFT information representing the ownership information, the history information, and address information where the second NFT information is stored for at least one object corresponding to the issued blockchain-based NFT; 4. The service providing method according to claim 3, further comprising: The step of generating the blockchain-based DID includes:
converting ID information used by the user terminal into a unique identifier item among a plurality of items related to blockchain-based DID to generate a first item;
generating a second item by converting the plurality of NFT information to be defined and stored in an item of a DID document among a plurality of items related to a blockchain-based DID; The service providing method according to claim 4, characterized in that:

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