KR102628944B1 - Blockchain-based Legal Archive Authentication System and Method Using the Same - Google Patents

Abstract

The present invention is a legal data authentication system based on NFT (Non Fungible Token), which includes a personal authentication module that performs user authentication in a preset manner; A legal data input module in which legal data is input by a user whose authentication has been completed, and in which an original data assembly corresponding to the legal data is generated in a preset manner; A hash data operation module that calculates hash data for the original data assembly through a preset hash function; A token storage module that issues and stores NFT tokens based on the hash data; A blockchain storage module in which data about the NFT token is stored; A distributed storage module linked to the blockchain storage module; and an authentication performance module that performs authentication on information about the legal data; It includes a time point authentication module, wherein the authentication performance module uses an NFT token stored in the token storage module to authenticate that the legal data is legal data created before and including the time point; and an input user authentication unit that determines that the input is from an authenticated user using the personal authentication module. Provides a legal data authentication system that includes.

Description

Blockchain-based Legal Archive Authentication System and Method Using the Same}

The present invention relates to a legal data authentication system and a method of using the same.

Since the release of Bitcoin, which is based on blockchain, in 2009, blockchain has been used not only in electronic money systems such as Bitcoin, but also in platform services for smart contracts, cloud storage services, and blockchain computing services. It is applied in various fields.

Distributed Ledger, a key component of blockchain, is a core technology that makes blockchain a decentralized system, and the database that stores data such as transaction records is not owned by a centralized server, but is a blockchain network. This means that all participating nodes own and manage the same ledger.

In 2015, the Linux Foundation created the Hyper Ledger project to develop enterprise blockchain. As an open source project, companies and developers around the world voluntarily participate to build various blockchain platforms suitable for business purposes. I'm doing it. For example, various types of business data such as finance, logistics, real estate, patents, and medical can be recorded in a distributed ledger, and block generation algorithms or transaction guarantee policies suitable for the business system can be selectively set.

However, while this blockchain platform has the advantage of being able to maintain integrity in a decentralized network environment where multiple nodes use a distributed ledger, it is not suitable for maintaining integrity in a network in which a small number of nodes participate. Problems exist.

Recently, not only documents such as certificates, transcripts, certificates, and contracts (including electronic documents and printed documents) and securities such as checks, but also image files, media files, etc., have been printed or printed with forged or altered contents. It is often exercised by modifying the contents of the document. This causes loss of the victim's personal property and causes a decrease in trust in the market economic system.

In the case of private documents, signatures or seals are used to prove their authenticity, but the authenticity is confirmed after the fact through document appraisal by imitating signatures or forging seals. Even in the case of official documents, there are cases where forgery and falsification devices such as authenticity verification devices are provided using encrypted two-dimensional barcodes (e.g. QR codes), but the possibility of falsification cannot be ruled out in these as well.

In addition, it is very difficult to prove the authenticity of the author and the authenticity at the time of writing, so in most cases, the evidence is not recognized in practice. Despite their usefulness, the above documents and files are subject to many limitations when used as evidence in legal disputes (Reference: Supreme Court Judicial Policy Institute (2015), Study on the admissibility of digital evidence, Seoul: Judicial Policy Research Institute, Supreme Court Judicial Policy Research Institute (2016), Basic research on the status of evidence investigation and improvement measures for electronic information, Seoul: Judicial Policy Research Institute).

As a prior art, Korean Patent No. 10-1934444, 'Method for managing integrity data of documents and securities', is disclosed. The prior art extracts a hash value using the key information and encryption key of the document hidden in the two-dimensional barcode, compares the extracted hash value with the hash value at the bottom of the two-dimensional barcode, or extracts the hash value existing in the blockchain. This allows the integrity of the document to be proven by comparison. The key that encrypts the key information of the document is hidden within a two-dimensional barcode, making it difficult to identify with the naked eye, and the hidden encryption key is not delivered to the copy or is partially lost during the copying process. Therefore, we disclose a method for managing integrity data of documents and securities that has a low possibility of forgery and alteration and can be used to prove that they are not originals.

However, by hiding the two-dimensional barcode, the prior art can only check whether the content of the document or file itself has been forged or altered, and the user convenience of storing such documents or files is very low. Additionally, in legal disputes, no information is disclosed at all to certify the authenticity of the author or the authenticity at the time of writing.

(Patent Document 1) Korean Patent No. 10-1934444

The present invention was devised to solve the above-mentioned problems, and seeks to propose a technical basis for certifying the authenticity of the author of legal materials and the authenticity at the time of creation in legal disputes.

In addition, the present invention seeks to propose a technology that can satisfy both security and convenience by strengthening the security of legal data and facilitating the transmission of legal data to other parties by being based on NFT tokens. .

One embodiment of the present invention to solve the above problems is a legal data authentication system based on NFT (Non Fungible Token), which includes a personal authentication module that performs user authentication in a preset manner; A legal data input module in which legal data is input by a user whose authentication has been completed, and in which an original data assembly corresponding to the legal data is generated in a preset manner; A hash data operation module that calculates hash data for the original data assembly through a preset hash function; A token storage module that issues and stores NFT tokens based on the hash data; A blockchain storage module in which data about the NFT token is stored; A distributed storage module linked to the blockchain storage module; and an authentication performance module that performs authentication on information about the legal data; It includes a time point authentication module, wherein the authentication performance module uses an NFT token stored in the token storage module to authenticate that the legal data is legal data created before and including the time point; and an input user authentication unit that determines that the input is from an authenticated user using the personal authentication module. Provides a legal data authentication system that includes.

In addition, the token storage module includes an encryption unit that encrypts the original data assembly using a preset encryption key; It includes, wherein the distributed storage module shares the original data assembly in an encrypted state using a smart contract based on a blockchain storage module, and the authentication performance module uses the distributed storage module to an original confirmation unit configured to check the original data assembly shared in the storage module; It may further include, and may be set to require decryption by the user through the original confirmation unit in order to confirm the original data assembly.

In addition, the token storage module is configured to enable transfer of the previously issued NFT token between the user and other users, and when a user transmits the NFT token to another user, the NFT token is granted to the other user. As it is transmitted to the token storage module, transaction hash data for the NFT token can be newly created.

In addition, the hash data for the original data assembly is processed in a preset manner, and the preset method stores the hash data in the user terminal and generates an NFT token corresponding to the hash data through the token storage module. It is published and stored, and the original data assembly is set to be non-shared with the distributed storage module, so that the timing of the legal data can be confirmed, but the content cannot be confirmed.

In addition, the legal data authentication system includes an NFT token status check module that checks whether the original data assembly corresponding to the NFT token is stored on the distributed storage module; It further includes, wherein the NFT token status check module can provide users and third parties with information on whether to share the original data assembly on the distributed storage module in a preset manner through the token storage module.

In addition, when it is confirmed by the NFT token status confirmation module that the user has stored only hash data for the legal data on the distributed storage module, the point-in-time authentication unit of the authentication performance module stores the hash data of the user terminal. And by processing comparison of hash data on the distributed storage module in a preset manner, the point in time for the legal data can be specified.

In addition, an artificial intelligence authentication module is configured to automatically determine the party to the legal act on which the legal data is based, using an artificial intelligence model learned in a preset manner, and to recognize the authenticity of the legal data between the parties. ; It further includes, wherein the token storage module is granted to each user who has completed user authentication by the personal authentication module, and the artificial intelligence authentication module uses a text file and an image file among pre-prepared legal materials as input information. , an artificial intelligence model learning unit that generates an artificial intelligence model by learning the parties to the legal act on which the legal data is based using output information; A party identification unit that identifies parties to the legal data input into the legal data input module through the artificial intelligence model, and selects authenticated parties authenticated by the personal authentication module from among the parties; A token issuance unit configured to equally issue NFT tokens based on original data assembly corresponding to the legal data for each token storage module of the authentication party; And a token storage decision unit where the authentication party checks the original data assembly corresponding to the NFT token and inputs whether to store the NFT token in the token storage module. Including, the authentication party that has decided to store the NFT token through the token storage decision unit may be considered to acknowledge the authenticity of the legal data.

Additionally, the token issuing unit may be configured to enable the user to select at least some of the authentication parties.

Meanwhile, the present invention is a method of authenticating legal data based on NFT, comprising: (a) performing user authentication in a preset manner in a personal authentication module; (b) in the legal data input module, legal data is input by a user whose authentication has been completed, and an original data assembly corresponding to the legal data is generated in a preset manner; (c) calculating hash data for the original data assembly through a preset hash function in a hash data calculation module; (d) In the token storage module, an NFT token based on the hash data is issued and stored, and the data for the NFT token is stored in a blockchain storage module, and the original data assembly is stored in a distributed storage module. step; And (e) in the authentication performance module, using the NFT token stored in the token storage module, determining the time point and input person for the legal data; Provides a method including.

In addition, step (d) is a step of encrypting the original data assembly using a preset encryption key in the (d1) encryption unit, and sharing the original data assembly in an encrypted state in the distributed storage module. stage of becoming; Step (e) includes: (e1) confirming, in the original confirmation unit, the original data assembly shared with the distributed storage module through decryption by the user; may include.

In addition, in step (c), the hash data is stored in the user terminal, and in step (d), the address of the distributed storage module matching the NFT token is generated based on the hash data, but the original data By not sharing the assembly with the distributed storage module, it can be configured to make it possible to check the timing of the legal data, but not to check the content.

In addition, after step (d), (d2) in the NFT token status confirmation module, checking the status of whether the original data assembly corresponding to the NFT token is stored on the distributed storage module; and (d3) providing status information on whether the legal data is stored in a preset manner to users and third parties through the token storage module; It may further include.

On the other hand, the present invention relates to a legal data authentication service providing server based on NFT, a communication module; Memory where the legal data authentication service provision program is stored; It includes a processor that executes the program, wherein the processor performs user authentication in a preset manner according to execution of the program, and legal data is input by the user whose authentication has been completed, and in a preset manner. Creates an original data assembly corresponding to the legal data, calculates hash data for the original data assembly through a preset hash function, issues and stores an NFT token based on the hash data, and stores the NFT token based on the hash data. Data about the NFT token is stored in the blockchain storage module, but the original data assembly is stored in the distributed storage module, and the NFT token stored in the token storage module is used to determine the time point and input person for the legal data. Provides a server that provides legal data authentication services.

The effects of the present invention are as follows.

First, the present invention provides a structure that can certify the authenticity of the author of legal materials and the authenticity at the time of creation in legal disputes, thereby providing a technical basis for being recognized as evidence in legal disputes and widely used as evidence. There is a possible effect.

In addition, by being based on NFT tokens, the present invention can satisfy both security and convenience by strengthening the security of legal data and facilitating the transmission of legal data to other parties, and is the subject of legal data. It has application scalability in that it can be applied to all types of files regardless.

1 is a conceptual diagram of a legal data authentication system according to the present invention.
Figure 2 is a block diagram of a legal data authentication system according to the present invention.
Figure 3 is a conceptual diagram schematically showing the decryption process of the original data assembly through the authentication performance module of the present invention.
Figure 4 is a conceptual diagram schematically showing the processing process when hash data of the original data assembly of the present invention is stored in the user terminal.
Figure 5 is a conceptual diagram schematically showing the processing process of establishing the authenticity of legal data through the artificial intelligence authentication module of the present invention.
Figure 6 is a flowchart of a method using the legal data authentication system according to the present invention.
Figure 7 is an example of a logic equation for schematically explaining the process of providing the status of an NFT token using the legal data authentication system according to the present invention.
Figures 8 to 13 are examples of UI showing the state in which the legal data authentication system according to the present invention is implemented on a smartphone.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and similar parts are given similar reference numerals throughout the present application.

In this application, when a part is said to be “connected” to another part, this includes not only the case where it is “directly connected,” but also the case where it is “electrically connected” with another element in between. In addition, when a part is said to "include" a certain component, this does not mean excluding other components unless specifically stated to the contrary, but may further include other components, and one or more other features. It should be understood that it does not exclude in advance the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

As used herein, the terms “step of” or “step of” do not mean “step for.” In this application, 'part' includes a unit realized by hardware, a unit realized by software, and a unit realized using both. Additionally, one unit may be realized using two or more pieces of hardware, and two or more units may be realized using one piece of hardware.

In addition, the term 'module' refers to a unit that performs a certain function, but the module is not limited to only the above function, and in addition to the function for which the module is specified, auxiliary functions and additional functions for performing the above function are used. It is specified in advance that additional functions may be included and may be recorded in one physical memory, or may be distributed and recorded between two or more memories and recording media.

Additionally, the various techniques described herein may be implemented with hardware or software, or a combination of both as appropriate. As used herein, terms such as 'Unit', 'Module', 'Server', and 'System' also refer to computer-related entities, i.e. It can be treated as equivalent to hardware, a combination of hardware and software, software, or software at execution time.

Some of the operations or functions described herein as being performed by a terminal, apparatus, or device may instead be performed on a server connected to the terminal, apparatus, or device. Likewise, some of the operations or functions described as being performed by the server may also be performed in a terminal, apparatus, or device connected to the server. In this application, some of the operations or functions described as mapping or matching with the terminal are interpreted to mean mapping or matching the terminal's unique number or personal identification information, which is the identifying data of the terminal. It can be.

The system according to the present invention includes Personal Communication System (PCS), Global System for Mobile communications (GSM), Personal Digital Cellular (PDC), Personal Handyphone System (PHS), Personal Digital Assistant (PDA), and International Mobile Telecommunication (IMT)- 2000, CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access), Wibro (Wireless Broadband Internet) terminal, smartphone, smartpad, tablet PC All types of handheld-based wireless communication devices and computing devices such as stationary PCs and laptops can be used, and the above distributed applications are implemented in the form of computer programs and recorded on readable and writable recording media. and can be mounted on a terminal.

Additionally, the system according to the present invention is based on a network, and the network refers to a connection structure that allows information exchange between nodes such as terminals and servers. Examples of such networks include the 3rd Generation Partnership Project (3GPP) network, Long Term Evolution (LTE) network, World Interoperability for Microwave Access (WIMAX) network, Internet, Local Area Network (LAN), and Wireless LAN. (Wireless Local Area Network), WAN (Wide Area Network), PAN (Personal Area Network), Bluetooth network, satellite broadcasting network, analog broadcasting network, DMB (Digital Multimedia Broadcasting) network, WiFi, etc. It is not limited.

With reference to Figures 1 and 2, the legal data authentication system according to the present invention will be described. Since the present invention is premised on interoperability with a platform system, it can be configured to allow multiple users to access the system.

The legal data authentication system includes a personal authentication module (110), legal data input module (120), hash data operation module (130), blockchain storage module (150), distributed storage module (160), and authentication performance module (170). Includes.

The personal authentication module 110 authenticates the user in a preset manner and allows login. Due to the nature of bonds, an identity verification process is essential. Here, the login method can be any of the various authentication methods that are currently widely used. For personal authentication, the legal data authentication system of the present invention can only be used by users who have completed membership registration. The personal authentication module 110 can configure and provide an interface to enable authentication through the user's smart device, etc.

The legal data input module 120 is configured to input legal data by a user who has completed user authentication. In a preset manner, an original data assembly corresponding to legal data is created. Original data assembly refers to the collection of all information related to legal materials. For example, it is structured to include all information related to legal data, such as the original file of the legal data, the author of the legal data, the person entering the legal data, the time of input of the legal data, and the time of creation of the legal data. In terms of data structure, the original data assembly is composed of preset divided formations, and matching legal materials can be arranged in each divided formation.

The hash data operation module 130 is a module that calculates hash data for the original data assembly through a preset hash function. Designers can select a hash function optimized for the present invention and can customize and apply known hash functions. By the hash data operation module 130, unique hash data matching the chat window is derived. In the present invention, hash data generation can be achieved through various encryption algorithms such as MD5 (MessageDigest algorithm 5) and SHA (Secure Hash Algorithm).

The token storage module 140 issues a blockchain-based token corresponding to the original data assembly, and is configured to record transaction hash data (TxHash) for the token. Information about these tokens is stored in the blockchain storage module 150 and is on-chain in block form. Tokens issued from the token module 140 may be composed of NFT tokens based on NFT (Non Fungible Token), smart contract technology (Solidity) based on Ethereum (ERC-20, ERC-721), and decentralization. IPFS (InterPlanetary File System) and IPDB (InterPlanetary DataBase) technologies, which are distributed file storage technologies to implement the web (Web 3.0), can be applied.

The distributed storage module 140 is configured to share data about the NFT token, including chat data assembly, in an encrypted or non-encrypted state. Unlike the user account module, this can be viewed or confirmed by the user or a third party. To this end, the distributed storage module is configured to be connected to the user account module, and the inquiry history of the distributed storage module can be separately recorded and managed. If data about the NFT token is shared in an encrypted state on the distributed storage module 140, a process of decrypting it is required. In other words, users who know the encryption key can access it, but third parties are not allowed access (disclosure). This is also to prevent secondary forgery and alteration.

The distributed storage module 160 can be understood as IPFS (InterPlanetary File System). In general, IPFS is a faster, more secure and open network realized through peer-to-peer communication of nodes without a centralized server. Unlike the conventional HTTP Web, which has fatal consequences when a large server is disconnected, in IPFS the ecosystem remains stable even if several nodes are disconnected. It can deliver high-capacity files quickly and efficiently (BitSwap), and it can also be used efficiently as storage because it can detect duplicates of files. Additionally, file version management (Git) is possible. Even in situations where smooth access to the mainstream Internet is not possible, the IPFS ecosystem is maintained. In IPFS, each file can consist of multiple blocks, and each block has a unique name expressed as hash data. IPFS stores the names of all files in the database, excludes duplicates of the same file, and tracks the information of each file. Each node stores only the files it is interested in, and through indexing information, it is possible to know who is storing which files. A high-level P2P network can be realized without a centralized server by each node participating in the network managing its own hash table, and this is called distributed hash table (DHT) technology. When searching for a file, a hash table is used, and each node, not the central system, functions to map names to values. In IPFS, the content itself is searched. The content itself acts as an address, and is called ‘content-addressed’. Therefore, if you find the content name in the hash table, you can find out the node that holds the content.

Meanwhile, the token storage module 140 further includes an encryption unit 142.

The encryption unit 142 encrypts the original data assembly using a preset encryption key. At this time, the distributed storage module 160 is designed to share the original data assembly in an encrypted state using a smart contract based on a blockchain storage module. Through the uri address of the NFT token, anyone can access the original data assembly shared in the distributed storage module 160, in order to protect the personal information of parties related to legal data. At this time, it is desirable that the key value of the original data assembly is given only to the person entering the legal data.

In addition, the token storage module 140 is configured to enable transmission of the previously issued NFT token between the user and other users, and when the user transmits the NFT token to another user, the NFT token is granted to the other user. As it is transmitted to the token storage module 140, transaction hash data for the NFT token is newly created.

In other words, it is different from conventional technology in that when granting permission to view data related to legal documents to another person, permission is granted through transmission of an NFT token rather than sharing the key value. There is a very high risk of key values being leaked or hacked, so to strengthen the security of legal materials, viewing rights are granted based on NFT tokens.

The authentication module 170 performs the function of authenticating the original data assembly matching the NFT token in a preset manner. The authentication module 170 may be configured to be activated when an authentication request is made by a user after issuing an NFT token. In this process, billing may be performed to the user through a billing department (not shown). The billing department is configured to link with the user's account at a pre-set financial institution based on an open API (open application programming interface), thereby improving the user's payment convenience. The user's account may include not only a financial institution, but also the user's cryptocurrency account, and billing and payment may be made using a predetermined cryptocurrency.

At this time, a smart contract function based on blockchain technology can be used, so a certain algorithm can be implemented in the cryptocurrency account itself. Additionally, digital currency based on CBDC (Central Bank Digital Currency) may be applied to the account. If this digital currency is applied in the future, it will be able to facilitate international bond transactions and make payments simpler than in a much more advanced form than currently.

Referring to FIG. 3, the authentication module 170 includes a point-in-time authentication unit 174 and an input user authentication unit 176.

The point-in-time authentication unit 174 uses the NFT token stored in the token storage module 140 to perform the function of authenticating that the legal data was created before and including the above-mentioned time point. For example, if the relevant legal data is entered into the present inventor's system at 2021.07.08 17:37 and on-chained on the blockchain storage module 150, the time of creation of the legal data is at least before 2021.07.08 17:37. You can see that it is. Accordingly, in a legal dispute, if the time of preparation of the legal materials becomes an issue, based on the NFT token, blockchain storage module 150, and distributed storage module 160, the time of preparation of the legal materials is at least 2021.07.08 17:37 A technical basis is established to recognize that it was before.

The input user authentication unit 176 uses the personal authentication module 110 to determine that the input is from an authenticated user. In other words, it certifies that the user authenticated by the personal authentication module 110 has entered the relevant legal data.

In this way, the present invention provides a technical basis for recognizing the time of creation of the legal data and the authenticity of the inputter (or author) through the time authentication unit 174 and the inputter authentication unit 176.

The authentication performance module 170 further includes an original verification unit 172 configured to verify the original data assembly shared in the distributed storage module 160. The original confirmation unit 172 is a component necessary to check the original data assembly. As described above, the original data assembly is shared in the distributed storage module 160 in an encrypted state, and performs the function of decrypting it. . At this time, the person entering the legal data (user) can decrypt it using the given key value.

Referring to FIG. 4, the present invention includes a configuration that uses the authentication performance module 170 and the distributed storage module 160 in a specific manner.

Specifically, hash data for the original data assembly is transmitted to a user terminal (e.g., smart device, laptop, desktop, etc.) and stored, and an NFT token corresponding to the hash data is issued through the token storage module 140. Data assembly is set to be non-shared in the distributed storage module 160, meaning that the timing of legal data can be confirmed, but the content cannot be confirmed.

In other words, by specifying only the hash data (CID) in IPFS without disclosing the contents of the legal data, the timestamp of the connected NFT token (recorded in TxHash at the time of issuance of the NFT token) data can be used to determine whether the file was available at that time. Since the fact that something “existed” can be certified, the point in time can be confirmed. In Figure 7, an example of a logical expression for a configuration that keeps legal data private and specifies only the viewpoint is expressed.

The legal data authentication system according to the present invention further includes an NFT token status confirmation module 180.

The NFT token status check module 180 is configured to check whether the original data assembly corresponding to the NFT token is stored on the distributed storage module. It is configured to provide users and third parties with information about whether to share the original data assembly on the distributed storage module in a preset manner through the token storage module 140.

It is designed to detect whether data is uploaded by targeting the address of the distributed storage module 160 that matches the original data assembly. It is configured to attempt to access the address at a preset period, and detects whether or not it is uploaded through a predetermined function based on the response to the access.

At this time, when it is confirmed by the NFT token status confirmation module 180 that the user has stored only hash data for legal data on the distributed storage module 160, the point-in-time authentication unit 174 of the authentication performance module , Comparison of the hash data of the user terminal and the hash data on the distributed storage module 160 can be processed in a preset manner to specify the point in time for the legal data.

In other words, while comparing the hash data of the user terminal and the hash data on the distributed storage module 160, if they match, it can be authenticated with the contents of the legal data in the hash data of the user terminal, and the hash data included in the hash data Through input time information, it provides a technical basis for authentication up to the point relevant to legal data. This is because it is almost impossible for the hash data in the user terminal and the hash data on the distributed storage module 160 to match.

Referring to Figure 5, the present invention further includes an artificial intelligence authentication module 190.

The artificial intelligence authentication module 190 uses an artificial intelligence model learned in a preset manner to automatically determine the parties to the legal act on which the legal data are based, and is configured to recognize the authenticity of the legal data between the parties. .

At this time, the token storage module 140 is granted to each user for whom user authentication has been completed by the personal authentication module 110.

The artificial intelligence authentication module 190 includes an artificial intelligence model learning unit 192, a party identification unit 194, a token issuance unit 196, and a token storage decision unit 198.

The artificial intelligence model learning unit 192 is configured to generate an artificial intelligence model by using text files and image files among pre-prepared legal materials as input information and learning the parties to the legal act on which the legal materials are based as output information. In this process, artificial intelligence neural network technologies that are currently widely used can be applied.

The party identification unit 194 is configured to identify the parties to the legal data input into the legal data input module 120 through an artificial intelligence model. In other words, text that can be judged as a party is extracted from the original input legal data. This is called a ‘preliminary party’. It performs the function of selecting authenticated parties authenticated by the personal authentication module 110 from among these prospective parties. The present invention is a configuration that grants viewing rights to legal data through the movement of NFT tokens, so this process is necessary for combination with NFT tokens. In other words, this means that rather than the user entering the parties directly, the preliminary parties are judged through a pre-trained artificial intelligence model, and the user secondarily selects the authenticated parties from the preliminary parties.

The token storage decision unit 198 is a configuration that grants decision authority to the authenticating party. The authenticating party is configured to check the original data assembly corresponding to the NFT token and input whether the NFT token is stored in the token storage module 140. The authenticating party may store NFT tokens and may be configured to reject them. Of course, all actions by the authenticating party to view the original data assembly can be recorded in the blockchain storage module 150.

At this time, through the token storage decision unit 198, a special agreement may be made in advance so that the authentication party that has decided to store the NFT token is deemed to acknowledge the authenticity of the legal data. These special contract details can be included in the personal authentication module 110 so that the special contract can be concluded at the same time as personal authentication. Figure 5 means that only NFT token B for party B is considered accepted or valid. At this time, it is desirable to design so that all NFT tokens for parties who refuse are discarded.

Referring to Figure 6, the legal data authentication method based on the present inventor's NFT includes steps (S110) to (S150).

Step S110 is a step in which the personal authentication module 110 performs user authentication using a preset method.

Step S120 is a step in which legal data is input by a user whose authentication has been completed in the legal data input module 120, and an original data assembly corresponding to the legal data is created in a preset manner.

Step S130 is a step in which the hash data calculation module 130 calculates hash data for the original data assembly using a preset hash function.

In step S140, an NFT token based on the hash data is issued and stored in the token storage module 140, and the data for the NFT token is stored in a blockchain storage module, and the original data assembly is distributed. This is the stage where it is saved in the storage module.

Step S140 further includes step S141. This is a step of encrypting the original data assembly using a preset encryption key in the encryption unit 142, and is a step of sharing the original data assembly in an encrypted state with the distributed storage module 160.

Step (S150) is a step in which the authentication performance module 170 determines the time point and input person for the legal data using the NFT token stored in the token storage module.

Step S150 further includes step S151. Step S151 is a step in which the original data assembly shared with the distributed storage module 160 is confirmed through user decryption in the original confirmation unit 172.

In the present invention, the above embodiment is an example and the present invention is not limited thereto. Anything that has substantially the same structure and achieves the same effect as the technical idea described in the claims of the present invention is included in the technical scope of the present invention.

110: Personal authentication module
120: Legal data input module
130: Hash data operation module
140: Token storage module
150: Blockchain storage module
160: Distributed storage module
170: Authentication performance module
180: NFT token status check module

Claims (13)

As a legal data authentication system based on NFT (Non Fungible Token),
A personal authentication module that performs user authentication in a preset manner;
A legal data input module in which legal data is input by a user whose authentication has been completed, and in which an original data assembly corresponding to the legal data is generated in a preset manner;
A hash data operation module that calculates hash data for the original data assembly through a preset hash function;
A token storage module that issues and stores NFT tokens based on the hash data;
A blockchain storage module in which data about the NFT token is stored;
A distributed storage module linked to the blockchain storage module; and
An authentication performance module that performs authentication on information about the legal data, wherein the information includes an input point of the legal data; Includes,
The authentication performance module is,
A time point authentication unit that recognizes the time point of the legal material by using the NFT token stored in the token storage module to certify that the legal material is legal material created before and including the input time; and
an input user authentication unit that determines that the input is from an authenticated user using the personal authentication module; Includes,
Hash data for the original data assembly is processed in a preset manner,
The preset method is,
While storing the hash data in the user terminal, an NFT token corresponding to the hash data is issued and stored through the token storage module,
By setting the original data assembly to be non-shared with the distributed storage module, the timing of the legal data can be confirmed, but the content cannot be confirmed,
Legal data certification system.
In claim 1,
The token storage module is,
an encryption unit that encrypts the original data assembly using a preset encryption key; Includes,
The distributed storage module is,
Using a smart contract based on a blockchain storage module, the original data assembly is shared in an encrypted state,
The authentication performance module is,
an original confirmation unit configured to check the original data assembly shared in the distributed storage module; Further comprising, in order to confirm the original data assembly, decryption by the user through the original confirmation unit is required,
Legal data certification system.
In claim 2,
The token storage module is,
It is configured to enable transfer of the previously issued NFT token between the user and other users,
When a user transmits the NFT token to another user,
The NFT token is transmitted to the token storage module granted to the other user, and transaction hash data for the NFT token is newly generated,
Legal data certification system.
delete In claim 1,
The legal data authentication system is,
An NFT token status check module that checks whether the original data assembly corresponding to the NFT token is stored on the distributed storage module; It further includes,
The NFT token status check module is,
Providing to users and third parties through the token storage module whether to share the original data assembly on the distributed storage module in a preset manner,
Legal data certification system.
In claim 5,
If it is confirmed by the NFT token status confirmation module that the user has stored only hash data for the legal data on the distributed storage module,
The point-in-time authentication unit of the authentication performance module,
Processing a comparison of the hash data of the user terminal and the hash data on the distributed storage module in a preset manner to specify the point of view for the legal data,
Legal data certification system.
In claim 1,
An artificial intelligence authentication module configured to automatically determine the parties to the legal act on which the legal data are based, using an artificial intelligence model learned in a preset manner, and to recognize the authenticity of the legal data between the parties; It further includes,
The token storage module is,
Granted to each user who has completed user authentication by the personal authentication module,
The artificial intelligence authentication module is,
An artificial intelligence model learning unit that generates an artificial intelligence model by using text files and image files among the legal materials prepared in advance as input information and learning the parties to the legal act on which the legal materials are based as output information;
A party identification unit that identifies parties to the legal data input into the legal data input module through the artificial intelligence model, and selects authenticated parties authenticated by the personal authentication module from among the parties;
A token issuance unit configured to equally issue NFT tokens based on original data assembly corresponding to the legal data for each token storage module of the authentication party; and
The authenticating party checks the original data assembly corresponding to the NFT token and inputs whether to store the NFT token in the token storage module; Includes,
Through the token storage decision unit, the authentication party that has decided to store the NFT token is deemed to acknowledge the authenticity of the legal data.
Legal data certification system.
In claim 7,
The token issuing department,
Configured to allow the user to select at least some of the authentication parties,
Legal data certification system.
A method of authenticating legal data using the legal data authentication system according to any one of claims 1 to 3 and claims 5 to 8,
(a) in the personal authentication module, performing user authentication in a preset manner;
(b) in the legal data input module, legal data is input by a user whose authentication has been completed, and an original data assembly corresponding to the legal data is generated in a preset manner;
(c) calculating hash data for the original data assembly through a preset hash function in a hash data calculation module;
(d) In the token storage module, an NFT token based on the hash data is issued and stored, and the data for the NFT token is stored in a blockchain storage module, and the original data assembly is stored in a distributed storage module. step; and
(e) in the authentication performance module, using the NFT token stored in the token storage module, determining the time point and input person for the legal data; Including,
method.
In claim 9,
In step (d),
(d1) encrypting the original data assembly in an encryption unit using a preset encryption key, wherein the original data assembly is shared in an encrypted state with the distributed storage module; Includes,
In step (e),
(e1) confirming, in the original confirmation unit, the original data assembly shared with the distributed storage module through decryption by the user; Including,
method.
In claim 9,
In step (c) above,
The hash data is stored in the user terminal,
In step (d) above,
The address of the distributed storage module matching the NFT token is generated based on the hash data, but the original data assembly is not shared with the distributed storage module, so that the timing of the legal data can be confirmed, but the content cannot be confirmed. composed,
method.
In claim 11,
After step (d) above,
(d2) in the NFT token status check module, checking the status of whether the original data assembly corresponding to the NFT token is stored on the distributed storage module; and
(d3) providing status information on whether the legal data is stored in a preset manner to users and third parties through the token storage module; Containing more,
method.
In the server providing legal data authentication service based on NFT,
communication module;
Memory where the legal data authentication service provision program is stored;
Includes a processor that executes the program,
Depending on the execution of the program, the processor
Perform user authentication in a preset manner,
Legal data is input by a user whose authentication has been completed, and an original data assembly corresponding to the legal data is created in a preset manner,
Compute hash data for the original data assembly through a preset hash function,
Through the token storage module, NFT tokens based on the hash data are issued and stored, the data for the NFT tokens is stored in the blockchain storage module, and the original data assembly is stored in the distributed storage module,
Using the NFT token stored in the token storage module, determine the time point and input person for the legal data,
Hash data for the original data assembly is processed in a preset manner,
The preset method is,
While storing the hash data in the user terminal, an NFT token corresponding to the hash data is issued and stored through the token storage module,
By setting the original data assembly to be non-shared with the distributed storage module, the timing of the legal data can be confirmed, but the content cannot be confirmed,
Server providing legal data authentication service.

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