KR20190133521A - A program for processing information - Google Patents

Abstract

According to an embodiment of the present invention, a program for processing information is stored in a medium to execute functions of: accessing a blockchain network; receiving information user authentication information and proof providing transaction request information; identifying a usage limit code corresponding to the proof providing transaction request information from transaction ledger data shared through the blockchain network; sharing a verification processing request corresponding to a proof providing transaction based on the usage limit code and the information user authentication information; and receiving proof information from the blockchain network by using verification result information corresponding to the verification processing request. According to the present invention, it is possible to prevent illegal actions from occurring due to leakage of an anonym.

Description

Information processing program {A PROGRAM FOR PROCESSING INFORMATION}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program for processing information, and more particularly to a program for processing purpose-related information on a blockchain network.

With the development of IT technology, anyone of all ages can use various services based on the Internet regardless of place.

In other words, it sells civil services and goods such as financial services such as bank transfer or stock trading by accessing a server operated by a bank or a securities company, and obtains various documents such as resident registration copies by accessing a server operated by a government agency. It is now possible to receive services in various industries such as e-commerce services such as purchasing goods by connecting to a server, and resume or certification verification service to apply for a company in real time through the Internet.

Using various services in various industries, various proof documents are also provided through the Internet.

However, the proof documents generally contain personal information, and in order to protect such personal information, it is necessary to install a certificate of electronic information for the purpose of verifying the identity of the user, and for the purpose of forgery and forgery of the document, or to prevent the denial of the transaction. It is true that it is very uncomfortable.

On the other hand, a blockchain network is a technology for constructing a distributed database, in which one transaction book can be shared through nodes connected to the network, and the transaction book is preserved by a blockchain that is verified and formed by an unspecified number of nodes. Can be. Such a transaction book is continuously shared and verified and preserved by all of the node terminals connected to the network, so that forgery of the transaction book is prevented by the majority of nodes that wish to maintain the transaction system.

However, such blockchain-based trading technology is based on the anonymity that anyone can join and participate in, and limiting this may impair system stability. Therefore, it is very vulnerable in protecting personal information. exist.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, while allowing the registration and provision of proof information through the blockchain network, while providing a use designation process for the protection of personal information, while maintaining system stability. Provides a process for registering and providing use-specific proof information to prevent social side effects caused by leaking proof information to anonymous persons, and verifies the proof information based on this through the blockchain network The purpose is to provide a program for processing information that can be processed.

The program according to an embodiment of the present invention for solving the above problems, the function to connect to the blockchain network, the function of receiving information user authentication information and proof-providing transaction request information, and the proof-providing transaction A function of identifying a usage restriction code corresponding to the request information from transaction book data shared through the blockchain network, and a verification processing request corresponding to the proof-providing transaction based on the usage restriction code and the information user authentication information. And sharing the attestation information from the blockchain network by using the sharing function and the verification result information corresponding to the verification processing request.

According to an embodiment of the present invention, by generating a usage restriction code corresponding to the usage information, and sharing proof information including the usage restriction code on the blockchain network, providing proof information while maintaining system stability. It can prevent social side effects and illegal activities caused by the leakage of anonymous persons during transactions.

Further, in accordance with the verification of the proof information including the use restriction code, the authentication information of the information user can be verified during the provision transaction of the proof information, so that it is provided only to the provider specified at the time of registration of the proof information, or limited. Nodes connected on a blockchain network can be distributedly verified so that they cannot be traded with a single provider.

1 is a conceptual diagram schematically showing an entire system according to an embodiment of the present invention.
2 is a block diagram illustrating in more detail a sharer terminal according to an embodiment of the present invention.
3 to 5 are flowcharts illustrating in more detail a method for processing proof information according to an embodiment of the present invention.
6 illustrates block chain data according to an embodiment of the present invention.
7 and 8 are exemplary diagrams for describing a terminal interface according to an exemplary embodiment of the present invention.
9 is a flowchart illustrating a usage restriction code generation method according to an embodiment of the present invention.
10 is a block diagram illustrating in more detail an information user terminal according to an embodiment of the present invention.

The following merely illustrates the principles of the invention. Therefore, those skilled in the art, although not explicitly described or illustrated herein, can embody the principles of the present invention and invent various devices that fall within the spirit and scope of the present invention. Furthermore, all conditional terms and embodiments listed herein are in principle clearly intended for the purpose of understanding the concept of the invention and are not to be limited to the specifically listed embodiments and states. Should be.

In addition, it is to be understood that all detailed descriptions, including the principles, aspects, and embodiments of the present invention, as well as listing specific embodiments, are intended to include structural and functional equivalents of these matters. In addition, these equivalents should be understood to include not only equivalents now known, but also equivalents to be developed in the future, that is, all devices invented to perform the same function regardless of structure.

Thus, for example, the block diagrams herein should be understood to represent a conceptual view of example circuitry embodying the principles of the invention. Similarly, all flowcharts, state transitions, pseudocodes, and the like are understood to represent various processes performed by a computer or processor, whether or not the computer or processor is substantially illustrated on a computer readable medium and whether the computer or processor is clearly shown. Should be.

In addition, the explicit use of terms presented in terms of processor, control, or similar concept should not be interpreted exclusively as a citation to hardware capable of running software, and without limitation, ROM for storing digital signal processor (DSP) hardware, software. (ROM), RAM, and non-volatile memory are to be understood to implicitly include. Other hardware for the governor may also be included.

The above objects, features, and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram schematically showing an entire system according to an embodiment of the present invention.

As shown in FIG. 1, the proof information registration and provision transaction system according to an embodiment of the present invention may be connected to one or more sharer terminals 100, 200, 300,... It can be composed of a blockchain mesh network formed by.

Each sharer terminal may comprise a communication module for connecting to the blockchain network for registration and sharing of proof information. The blockchain network may be implemented as a wired network such as a local area network (LAN), a wide area network (WAN), or a value added network (VAN). In addition, blockchain networks include mobile radio communication networks, satellite networks, Bluetooth, Wireless Broadband Internet (Wibro), High Speed Downlink Packet Access (HSDPA), Wi-Fi, and Long Term (LTE). Evolution) and the like can be implemented in any kind of wireless network. If necessary, the blockchain network may be a mixed network of wired and wireless.

Each sharer terminal may register account information according to its node connection to transaction book data of proof information shared in a cloud manner through a network. When the registration or provision transaction of proof information is required, each sharer terminal can propagate registration or provision transaction information of proof information to be recorded in the transaction book data to each sharer terminal.

According to the corresponding mutual verification process, for example, when the approval from the node terminal of a certain ratio or more is processed, the transaction book data is updated and the information is shared, so that the registration or provision transaction of proof information is processed. Can be.

Here, the transaction book data includes a block chain having a structure in which a plurality of blocks are sequentially connected in a generation order such that the current block includes a hash value for a block previously generated for each block corresponding to a predetermined time or unit. block chain) data can be linked.

Accordingly, the forgery verification of the transaction history and the proof information of the transaction book data can be easily processed according to the hash value verification of the blockchain. To this end, each sharer terminal may provide computing power to perform arithmetic and verification processing to calculate the hash value of the next block, and obtain a corresponding compensation.

The security stability of such a blockchain can be formed by system participation of sharers sharing data. Accordingly, the proof information block including the registration or provision of transaction information of the proof information between each sharer terminal connected to the blockchain network may be sequentially stored, and the hash value for the forgery prevention may be sequentially blockchained. Transaction verification (work proof) processing may be performed distributed in each sharer terminal.

On the other hand, the proof information user terminal 10 may be limitedly connected to the blockchain network, the information user terminal 10 for the proof information shared through the blockchain network through the blockchain network registration of the authentication information Information service can be provided. That is, although the blockchain network connection of the certificate information user terminal 10 is possible, provision of shared distributed transaction book data and provision of pre-registered certificate information may be limitedly performed according to verification and payment processing. .

To this end, the information user terminal 10 may register the authentication information on the blockchain network at the time of access, and may be provided with the authentication information-based proof information request and proof information providing transaction service. In addition, the proof information user terminal 10 may pay a user for registering the proof information with a predetermined blockchain network-based cryptocurrency for downloading the proof information.

FIG. 2 is a block diagram illustrating a sharer terminal in detail according to an embodiment of the present invention. The sharer terminal 100 accesses such a blockchain-based network system to store blockchain-based transaction book data as described above. The identification information used can be processed.

The sharer terminal 100 according to the embodiment of the present invention includes a control unit 130, a communication unit 120, a user input unit 140, a memory 150, a proof information processing unit 160, and a usage restriction code generation unit 110. It includes.

The communication unit 120 may include one or more modules that enable communication between the terminal 100 and the blockchain network. For example, the communication unit 120 may include a mobile communication module, a wireless internet module, a short range communication module or a wired communication module.

The user input unit 140 may include one or more interface modules for receiving a user input.

Here, the user input unit 140 may receive the trader's proof registration information, and may receive the node information and the proof information of the provider for registration based on the blockchain network.

Here, the proof information may include original proof information and proof verification information processed by the proof information processing unit 160. The proof original information may include document file information obtained by the proof information processing unit 160 in advance, and the proof verification information may include hash information hashed in response to the document file information. Accordingly, the proof original information may be shared with the proof verification information on the blockchain network to ensure primary forgery prevention.

In addition, the user input unit 140 according to an embodiment of the present invention may receive the usage information indicating the designation or limitation of the provider of the proof information. According to an embodiment of the present invention, it is to perform the registration and provision transaction of the use-specific proof of identification information to prevent the leakage or side effects of personal information to an unauthorized person by anonymity, use restriction code generation unit When the usage information is input, 110 generates a usage restriction code corresponding to the usage information.

The controller 130 may control the overall operation of the common sharer terminal 100 and may provide storage and processing of distributed authentication information received from the blockchain network.

In addition, when the proof information is input, the controller 130 may provide the processing of the proof information for requesting registration of the proof information or approval of a provision transaction to the blockchain network.

In particular, when the usage restriction code corresponding to the proof information is generated in the usage restriction code generation unit 110, the controller 130 shares proof information including the usage restriction code on the blockchain network. According to the corresponding approval result, the proof information may be updated in the transaction book data.

When the use-specific proof information is registered in this way, the use or provider according to the authentication information of the information user terminal 10 may be restricted in the transaction providing proof information to the information user terminal 10 connected to the blockchain network. .

To this end, the sharer terminals according to an embodiment of the present invention share the proof information providing transaction request including the usage restriction code from the account of the information user terminal 10 for the proof information on the blockchain network. If so, one or more other node terminals connected to the blockchain network may distribute the verification process for the proof information providing transaction to the information user terminal 10.

Accordingly, when the other node terminals having the same verification result information according to the verification process exist in the blockchain network for a predetermined ratio or more, the transaction history based on the verification result information is approved and shared on the blockchain network. The transaction book data may be updated normally, and the proof information may be provided to the information user terminal 10 normally.

The process for the registration process and the verification process may be pre-registered in the form of a code such as SMART CONTRACT in the transaction book data shared on the blockchain network, and thus forgery may be prevented.

Accordingly, the sharer terminal 100 processes the verification information provided to the information user terminal 10 in accordance with the verification of the proof information including the usage restriction code, thereby providing the transaction only to a predetermined provider. It is possible to provide a proof information processing method and apparatus capable of distributed verification processing by nodes connected on a blockchain network such that it cannot be traded to a provider for a limited or limited use.

3 to 5 are flowcharts illustrating in more detail a method for processing proof information according to an embodiment of the present invention.

First, FIG. 3 illustrates an operation of the first sharer terminal 100. First, the sharer terminal 100 accesses a blockchain network and registers node information (S1001).

The node information may include, for example, account information of a sharer connected through the first sharer terminal 100. The account information is an encryption key pre-issued for the account registration of the sharer, and the public key information of the sharer. It may include.

The first sharer terminal 100 receives sharer node information, proof information, and usage information (S1003).

Thereafter, the first sharer terminal 100 generates a usage restriction code corresponding to the usage information through the usage restriction code generation unit 110 (S1007).

When the usage restriction code is generated and a password corresponding to the identification information is received, the first sharer terminal 100 generates identification registration information including the usage restriction code through the control unit 130 (S1009). ).

Thereafter, the first sharer terminal 100 shares the generated certificate registration information on the blockchain network through the communication unit 120 (S1011), and the shared certificate information is verified and approved from other nodes. The approval of the proof registration transaction may be processed by updating the blockchain generated according to the approval of the one or more ratio nodes and the transaction book data corresponding thereto (S1015).

On the other hand, Figure 4 is for explaining the processing operation for receiving the proof information of the information user terminal 10, the information user terminal 10 information user authentication information and proof request information to receive the proof information; Receive the input (S2001).

Here, the information user terminal 10 is a terminal of the person who wants to receive proof information through the blockchain network and submits it to another person, a terminal of a company or a human resources manager who needs proof information of a specific person, a server of a financial institution, or the like. This may be illustrated, and by accessing the block chain network by inputting authentication information corresponding to each terminal node and performing corresponding authentication. Authentication may be performed in various ways such as personal authentication, authority authentication, email authentication, etc. The present invention is not limited thereto.

On the other hand, the usage restriction code may include provider restriction information or provider specification information corresponding to the authentication information. This will be described later in more detail.

The information user terminal 10 then shares the verification processing request based on the usage restriction code and the information user authentication information on the blockchain network (S2005), and obtains verification result information from the blockchain network (S2007).

For example, the verification result information may indicate whether authentication information of the information user terminal 10 exists in a block shared in advance through the blockchain network, and whether the authentication information is associated with the usage restriction code. .

In order to process the verification result, the information user terminal 10 may request distributed verification processing to one or more node terminals connected to the blockchain network, and thus, when verification processing of a predetermined ratio or more of the blockchain network is confirmed. This can be obtained as verification result information and recorded in transaction book data. Here, the verification result information may include flag information (true or false) indicating whether to verify.

When the verification result is found to be true, that is, for example, when the authentication information of the information user terminal 10 is identified as a business operator designated by the usage restriction code or as a business operator not limited by the usage restriction code, the information user terminal 10 may share proof-providing information including verification result information and a usage restriction code on the blockchain network (S2009). However, if the verification result is false, the information user terminal 10 may output a message indicating the failure of the transaction request itself.

Thereafter, if the shared proof providing transaction information is approved, the information user terminal 10 may check the transaction approval result corresponding to the blockchain generation of the proof providing information according to the update of the transaction book data (S2011). The proof information in which the result is confirmed may be provided to the information user terminal 10 from the distributed and stored transaction book data of the blockchain network (S2013).

Meanwhile, FIG. 5 illustrates an operation of the third sharer terminal 300 to provide distributed verification processing. First, the third sharer terminal 300 restricts the use from the verification processing request shared from the information user terminal 10. Identifies a code (S3001).

The third sharer terminal 300 obtains authentication information of the information user terminal 10 node corresponding to the usage restriction code from the blockchain transaction book data (S3003).

Here, the authentication information may be pre-registered on the blockchain network, and the authentication information corresponding to the information user terminal 10 node is personal information such as social security number information, mobile phone number information, card number information, or temporary code information. For example, job information, business name information, business status information, business status information, registration number information, taxation type information, and current status information may be exemplified as company information. May be exemplified.

Then, the information user terminal 10 generates a verification result according to the authentication information and the usage restriction code matching (S3005).

Here, the usage restriction code may include at least one of a usage specification index and a usage restriction index.

For example, the use restriction code may include a use designation index for designating at least one of a type or a target of the authentication information, whereby the use of the proof information may be designated as a specific purpose, user or enterprise. have.

In addition, the usage restriction code may include a usage restriction index for restricting at least one of the type or object of the authentication information. Accordingly, the use of the proof information is limited to excluding a specific purpose, user or company. Can be.

In addition, the third sharer terminal 300 may propagate the verification result information through the blockchain transaction book data (S3007).

Here, the verification result information may include a verification flag for indicating that the verified proof information providing transaction.

Accordingly, the transaction book data update process according to the approval of the verification result information may be performed in the third sharer terminal 300 and the terminals connected to the blockchain network including the same (S3009).

In addition, the third sharer terminal 300 may obtain a compensation corresponding to the verification result processing (S3011).

This is a reward provision process according to the provision of computing power for distributedly performing verification processing of proof-of-providing use matching, wherein the blockchain network-based cryptocurrency is provided from a cryptocurrency pool or a separate reward coin or point is provided. Processing may be exemplified.

6 illustrates blockchain data according to an embodiment of the present invention.

Referring to FIG. 6, all verification and transaction details performed in the blockchain network for a predetermined time period are stored in one block, and proof registration transaction information of each transaction history stored in the block is converted into a hash. Sharer address (public key 1), usage restriction code and proof information. In addition, the proof-providing transaction information may include an information user address (public key 2), authentication information, usage restriction code, verification result information, and the like.

This proof of transaction information is automatically generated a new block after a certain time, the generated block includes a hash value of the previously generated block. For example, a hash value of a specific block may mean a value obtained by converting a header of the block to a hash.

That is, block 2 contains the hash value (Hash 1) of the previously generated block 1, block 3 contains the hash value (Hash 2) of the block 2, blocks are generated while being sequentially connected as such, block n Contains the hash value of this block n-1.

Since the most recently generated block n contains information related to all previously generated blocks, only one block may not be forged, and thus it may be impossible to forge by modifying all blocks.

In addition, a predefined transaction process, a usage restriction process, and a verification process may be included in the initial block in generating the blockchain data. Accordingly, forgery of the transaction process itself is also impossible.

On the other hand, the transaction book data is updated and stored corresponding to the most recently generated block n, so that all terminals in the blockchain network can be distributed and shared.

7 and 8 are exemplary diagrams for describing a terminal interface according to an exemplary embodiment of the present invention.

Referring to FIG. 7, the sharer terminal 100 according to an embodiment of the present invention, through the interface 101, registrant information (AAA), certificate subject document information (certificate.PDF), for registration of proof information, And use restriction or use designation information corresponding to the proof information.

Accordingly, the sharer terminal 100 processes the usage restriction code generation for the usage restriction or designation through the usage restriction code generation unit 110, thereby approving the transaction for the usage restriction or designated usage transaction in the blockchain network. You can ask to share the information and confirm the approval result.

Here, the usage restriction or designation may include index information for designating or restricting the information user terminal 10.

In addition, the use restriction or designation according to the embodiment of the present invention may be extended to form various conditions. For example, the interface 101 may provide an input interface for more specifically designating a provider in correspondence with proof information to be registered.

For example, the user may input a use designation index for designating a specific individual, a specific company, a specific business type, a business type, a business name, etc. as a designated provider for the proof information registered by the user through the sharer terminal 100.

In addition, a user may input a usage restriction index for restricting a specific individual, a specific company, a specific industry, a business type, a business name, etc. as a limited provider for the proof information registered by the user through the sharer terminal 100.

The use designation index and the use restriction index may be input in combination, and the use restriction code generation unit 110 may generate a use restriction code according to a combination of the use designation index and the use restriction index.

In addition, referring to FIG. 8, the information user terminal 10 according to an exemplary embodiment of the present invention may first receive mobile phone authentication information as personal authentication information and complete authentication through the transaction interface 11. In addition, the public key information (BBB) of the information user (recipient) and the target document information (certificate.PDF) corresponding to the proof provider (AAA) may be input.

Accordingly, the information user terminal 10 may request usage restriction verification according to the input of authentication information, and receive proof information according to the verification result through the blockchain network.

9 is a flowchart illustrating a usage restriction code generation method according to an embodiment of the present invention.

Referring to FIG. 9, when the usage restriction or designation information input from the user input unit 140 is input, the usage restriction code generation unit 110 allocates an index corresponding to the input usage information.

In addition, the usage restriction code generation unit 110 receives the counter information setting information corresponding to the usage information from the user input unit 140 (S4003).

Thereafter, the usage restriction code generation unit 110 generates a usage restriction code by using the assigned index and counter information (S4005).

As described above, the usage restriction code may include restriction code or designation code information corresponding to preset usage information, and may further include counter information that can be deducted according to the number of provided transactions.

Such use restriction code may include, for example, an individual's social security code, mobile phone authentication code, and e-mail authentication code corresponding to a restriction identification code, corporate code, business item code, business status code, business name code, taxation code, etc. And a personal identification code, a mobile phone authentication code, an email authentication code, an enterprise code, a business code, a business code, a business name code, and a tax of a person corresponding to a designated identification code. It may be generated based on the whether code and the counter code, or a complex code to which the designation and the restriction are simultaneously applied may be generated according to each combination of the codes.

As such, the usage code table for applying the usage restriction code may be stored in the memory 150 in advance, and the usage restriction code generation unit 110 may generate code information using the table. In addition, the usage code table may be provided in the form of a download in advance in the transaction book data on the blockchain network.

10 is a block diagram showing in more detail the configuration of the information user terminal 10 according to an embodiment of the present invention.

As described above, the information user terminal 10 is a terminal of the person who wants to receive the proof information through the blockchain network and submits it to another person, a terminal of a company or a human resources manager who needs proof information of a specific person, or a financial institution. A server, etc. may be exemplified. By inputting authentication information corresponding to each terminal node and performing corresponding authentication, the server may be connected to the blockchain network, and payment processing for acquiring authentication information may be performed. Authentication may be performed in various ways such as personal authentication, authority authentication, email authentication, etc. The present invention is not limited thereto. In addition, the payment process may include cryptographic transaction processing to the cryptocurrency management node or proof information provider terminal 100.

Referring to FIG. 10, the information user terminal 10 according to an embodiment of the present invention may include a control unit 11, a user input unit 14, a communication unit 12, a memory 15, and a certificate information obtaining unit 16. ), The processes corresponding to the flowchart shown in FIG. 4 described above may be sequentially processed.

First, the control unit 11 controls the general operation of the general information user terminal 10, accesses the blockchain network, receives distributed authentication information of the information provider according to input of authentication information, and provides storage and output processing. can do.

The communication unit 12 may include one or more modules that enable communication between the information user terminal 10 and the blockchain network. For example, the communication unit 12 may include a mobile communication module, a wireless internet module, a short range communication module or a wired communication module.

The user input unit 14 may include one or more interface modules for receiving user input.

Here, the user input unit 14 inputs proof request information including authentication information that is pre-input or registered for receiving proof information to the information user terminal 10 and proof identification information for requesting proof information. I can receive it. Here, the authentication information may include usage information indicating the designation or restriction of the provider of the certificate information, and may further include payment information of the cryptocurrency based on the blockchain network. In addition, the usage information may include a usage restriction code, and the usage restriction code may include provider restriction information or provider specification information corresponding to the authentication information.

The proof information obtaining unit 16 processes the usage restriction code from the blockchain network with respect to the proof request information, the authentication confirmation of the authentication information, the processing confirmation of the payment information, and the verification of the proof information. The received proof information can be received, and the received proof information can be output through one or more output media.

As described above, the proof information may include proof original information and proof verification information, the proof original information may include document file information, and proof proof information corresponds to the document file information. It may include hashed hash information.

When the use-specific proof information is registered in this way, the use or provider according to the authentication information of the information user terminal 10 may be restricted when providing proof information to the information user terminal 10 connected to the blockchain network. The verification information according to the usage restriction code is distributed and the transaction information is approved in the blockchain network, and whether or not the forgery is sufficiently verified from the verification result information.

According to this embodiment of the present invention, without the need for a separate central server, by registering and providing service of the verifiable proof information can be verified, it is possible to prevent social side effects of information leakage according to the provider in advance while maintaining anonymity It is possible to provide a certificate authentication service providing system.

The above-described methods according to an embodiment of the present invention can be produced as a program for execution on a computer. In addition, the program may be stored in a computer-readable recording medium. Examples of the computer-readable recording medium may include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device. have.

The computer readable recording medium can be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. In addition, functional programs, codes, and code segments for implementing the method can be easily inferred by programmers in the art to which the present invention belongs.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

Claims (1)

Access to a blockchain network;
Receiving information user authentication information and proof-providing transaction request information;
Identifying a usage restriction code corresponding to the proof-providing transaction request information from the transaction book data shared through the blockchain network;
A function of sharing a verification processing request corresponding to the proof-providing transaction based on the usage restriction code and the information user authentication information; And
And receiving the proof information from the blockchain network using the verification result information corresponding to the verification processing request.

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