Intelligent legal instrument verification method and system and medium

Abstract

The invention provides a legal instrument intelligent verification method and system and a medium, and belongs to the technical field of judicial informatization. The method comprises the following steps: completing dual biological characteristic authentication of parties through a hotline system specified by a court, and generating an encrypted link with time limit; storing the legal document to a judicial block chain platform by adopting a fragmentation encryption technology, and generating a storage mark which is bound with the identity of a party and is related to the splitting encryption of the legal document; the receiver verifies the legality of the document through a dual verification mechanism of the content identifier stored in the block chain and the digital certificate; and when the verification is abnormal, triggering secondary verification of the short message and recording a tamper-proof operation record. According to the method, the court call-out system and the fragmentation encryption storage technology are combined for the first time, judicial document full-process closed-loop management is realized through the specified judicial block chain platform, and the problems of identity false use and data tampering existing in traditional electronic delivery are solved.

Description

Technical Field

[0001] This application relates to the field of judicial informatization technology. Specifically, it relates to a method, system, and medium for intelligent verification of legal documents. Background Art

[0002] During the judicial litigation process, the authenticity, integrity, and security of legal documents are key elements to ensure judicial fairness. Traditional methods for verifying legal documents mostly rely on manual operations, which have problems such as low efficiency, error-proneness, and susceptibility to human interference. For example, manually checking the authenticity of legal documents not only consumes a large amount of time and labor costs but also easily leads to verification errors due to negligence; in the storage and transmission links of legal documents, paper legal documents are prone to damage and loss, and electronic legal documents also face the risks of being tampered with and forged. With the development of information technology, although some electronic document verification technologies have been applied, existing electronic document verification solutions still have deficiencies in aspects such as identity verification, data encrypted storage, and verification processes, and cannot meet the strict requirements of judicial practice for document evidence verification, making it difficult to effectively ensure the security and reliability of litigation evidence throughout the judicial process. Therefore, there is an urgent need for an efficient, accurate, and secure method and system for intelligent verification of legal documents to meet the development needs of modern judicial work. Summary of the Invention

[0003] The purpose of this application is to provide a method, system, and medium for intelligent verification of legal documents. A legal document is generated through dual verification of voice and encrypted link by the court hotline system, and the document is split and stored in the judicial blockchain using sharding encryption technology, binding the identity key of the parties and attaching an access period. During verification, the authenticity is ensured through blockchain markers and dynamic verification of digital certificates. When an anomaly occurs, SMS secondary verification is automatically triggered and an anti-tampering log is recorded. This solution takes sharding encryption to prevent tampering, dynamic verification to prevent impersonation, and intelligent disaster tolerance to ensure continuity as the core, realizing the secure and reliable verification of legal documents throughout the process, and significantly improving judicial efficiency and evidence effectiveness.

[0004] In a first aspect, this application provides a method for intelligent verification of legal documents, including the following steps: Automatically contact the parties through the court-specified hotline system, and conduct dual identity verification on the parties by means of voice feature matching and generating an encrypted link with a time limit. After the verification is passed, generate a legal document according to the preset format, template, and specific case information; Split and encrypt the legal document and store it in the specified judicial blockchain platform, generating a storage marker related to the split and encryption of the legal document; When the recipient views the document, verify the validity of the storage marker and the issuer's certificate; When the verification fails, the receiving party automatically sends a SMS verification code to the mobile phone number reserved by the party for a second confirmation, activates the backup SMS verification code verification process, and saves the anti-tampering operation record.

[0005] Among them, in a legal document intelligent verification method described in the present application, the dual identity authentication includes: During the call in the court-specified hotline system, the voice characteristics of the answering party are collected by a voice acquisition device, and are highly accurately matched with the data pre-stored in the identity database through a voiceprint recognition algorithm; An asymmetric encryption algorithm is used to generate a time-limited encrypted link in combination with a random number generator. The link contains a first verification code that can only be used once; The generation of the encrypted link adopts a dual verification method. The user location information is obtained by acquiring the base station location or GPS location information, and after hashing operation, it is added to the first verification code.

[0006] Among them, in a legal document intelligent verification method described in the present application, the splitting and encrypting of legal documents includes: According to the paragraph and chapter logical structure of the legal document, the intelligent document parsing technology is used to divide the legal document into at least 3 encrypted parts, and different encryption algorithms are respectively selected to encrypt each part separately according to the preset importance of the information contained in different parts; Through the intelligent contract technology, a preset access period is added to each encrypted part for control. The period is set according to the progress of the case trial and the evidence confidentiality requirements. After the timeout, the intelligent contract automatically executes the access prohibition instruction.

[0007] Among them, in a legal document intelligent verification method described in the present application, the generation of storage marks related to the splitting and encrypting of legal documents includes: Each part of the legal document after splitting and encrypting is redundantly stored through the distributed storage nodes of the judicial blockchain platform, and parameters related to storage are generated for recording the storage node address, encryption information, and storage time; Using asymmetric encryption technology, the decoding key of each encrypted part is directly bound to the identity information of the party and saved in the secure key management system authorized by the court, generating storage marks related to the splitting and encrypting of legal documents, including preset corresponding content identifiers; A data structure is constructed by corresponding data blocks, storage marks, preset corresponding content identifiers, and generated timestamps of each part of the legal document after splitting and encrypting, and uploaded and stored on the blockchain platform.

[0008] Among them, in a legal document intelligent verification method described in the present application, the receiving party verifies the validity of the storage mark and the issuer's certificate when viewing the document, including: Obtain the preset corresponding content identifier and decoding key in the storage tag related to the splitting and encryption of legal documents through the blockchain platform; Decrypt the data blocks corresponding to each part of the legal document according to the decoding key to obtain the corresponding legal document data, and generate a second verification code for the legal document data according to the preset rules; Compare the obtained preset corresponding content identifier with the second verification code corresponding to the currently decrypted legal document data; If the preset corresponding content identifier in the storage tag is consistent with the second verification code of the currently decrypted data, and the digital certificate of the issuing unit is recognized by the superior certification authority, the verification passes; otherwise, the verification fails; Automatically verify whether the digital certificate of the issuing unit is recognized by the superior certification authority through a secure communication link.

[0009] Among them, in a legal document intelligent verification method described in this application, the automatically verifying whether the digital certificate of the issuing unit is recognized by the superior certification authority through a secure communication link includes: Automatically query the certificate invalidation list through a real-time data interaction interface, use a status monitoring program to detect the certificate status in real time, and issue a warning when a invalid certificate is detected; Use a dedicated timestamp extraction tool to extract a trusted timestamp from the electronic signature of the legal document, and compare it with the standard time source provided by the National Time Service Center to determine whether the timestamp is within the validity period certified by the National Time Service Center.

[0010] Among them, in a legal document intelligent verification method described in this application, when the verification fails, the receiving party automatically sends a short message verification code to the mobile phone number reserved by the party for a second confirmation, starts a backup short message verification code verification process, and saves the anti-tampering operation record, including: When the verification fails, automatically send an encrypted short message containing a one-time short message verification code to the mobile phone number reserved by the party through the judicial short message gateway by a preset short message sending module; Limit the completion of the secondary identity confirmation within a preset time, and terminate the access if the time limit is exceeded; Use blockchain timestamps and preset encryption algorithms to encrypt and record key data in the verification process, including the identity information and short message verification code of the party, and the verification time, and synchronize them to a preset judicial evidence storage node for evidence storage.

[0011] In a second aspect, this application provides a legal document intelligent verification system, which includes: a memory and a processor, the memory stores a program of a legal document intelligent verification method, and when the program of the legal document intelligent verification method is executed by the processor, the following steps are implemented: Automatically contact the parties through the court-specified hotline system, and use voice feature matching and the method of generating an encrypted link with a time limit to conduct dual identity verification on the parties. After the verification is passed, generate legal documents according to the preset format, template, and specific case information; Split and encrypt the legal documents and store them in the specified judicial blockchain platform, generating storage marks related to the splitting and encryption of the legal documents; When the recipient views the document, verify the validity of the storage mark and the issuer's certificate; When the verification fails, the recipient automatically sends a text message verification code to the mobile phone number reserved by the party for a second confirmation, starts an alternative text message verification code verification process, and saves the anti-tampering operation record.

[0012] Among them, in a legal document intelligent verification system described in this application, the dual identity authentication includes: During the call on the court-specified hotline system, use a voice collection device to collect the voice features of the answering party, and perform high-precision matching with the data pre-stored in the identity database through a voiceprint recognition algorithm; Adopt an asymmetric encryption algorithm, combined with a random number generator to generate an encrypted link with a time limit, and this link contains a first verification code that can only be used once; The generation of the encrypted link adopts a dual verification method, obtains the user location information by acquiring base station positioning or GPS positioning information, and adds it to the first verification code after performing a hash operation on it.

[0013] In a third aspect, this application also provides a computer-readable storage medium, and the computer-readable storage medium stores a program for a legal document intelligent verification method. When the program for the legal document intelligent verification method is executed by a processor, it realizes the steps of a legal document intelligent verification method as described in any one of the above.

[0014] As can be seen from the above, the embodiments of this application provide a method, system, and medium for intelligent verification of legal documents. This method automatically triggers a two-factor authentication process through a court-designated hotline system, combining voice feature matching with time-sensitive encrypted links to generate legal documents. The method innovatively employs sharded encryption technology to split the document into at least three independently encrypted components. These components, after access period control, are stored in a judicial blockchain node, generating a key and blockchain storage tag that are bound to the parties' identities. During verification by the recipient, multi-layered security checks are implemented through blockchain identifier comparison and dynamic verification of the issuing entity's digital certificate (including querying the certificate expiration list and verifying the timestamp with the National Time Service Center). If any verification is abnormal, the system automatically initiates SMS secondary verification and generates a tamper-proof operation log. This solution utilizes blockchain distributed storage and sharded encryption to prevent data tampering, employs dynamic two-factor authentication to mitigate identity theft, enhances data sovereignty through time-sensitive access control and key binding, and integrates an intelligent certificate verification system to ensure the legal validity of documents. Ultimately, this solution establishes a trusted evidence chain throughout the entire process, from generation, storage, verification, and disaster recovery traceability, significantly improving the security, efficiency, and judicial credibility of litigation evidence verification.

[0015] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or understood by practicing the embodiments of the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A flowchart of a method for intelligent verification of legal documents provided in an embodiment of the present application; Figure 2 A flowchart of dual identity authentication for a legal document intelligent verification method provided in an embodiment of the present application; Figure 3 A flowchart of splitting and encrypting legal documents in a method for intelligent verification of legal documents provided in an embodiment of the present application; Figure 4 A flowchart of a method for intelligent verification of legal documents provided in an embodiment of the present application, which generates storage marks related to the splitting and encryption of legal documents. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present application, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with relevant laws, regulations, and standards of relevant countries and regions.

[0020] Please refer to Figure 1 , Figure 1 which is a flowchart of an intelligent verification method for legal documents in some embodiments of the present application. This intelligent verification method for legal documents is used in terminal devices such as computers and mobile phone terminals. This intelligent verification method for legal documents includes the following steps: S101: Automatically contact the parties through the court-specified hotline system, and conduct dual identity verification on the parties by means of voice feature matching and generating a time-limited encrypted link. After successful verification, generate legal documents according to the preset format, template, and specific case information; S102: Split and encrypt the legal documents and store them in the specified judicial blockchain platform, and generate a storage mark related to the splitting and encryption of the legal documents; S103: When the recipient views the document, verify the validity of the storage mark and the issuer's certificate; S104: When the verification fails, the recipient automatically sends a short message verification code to the mobile phone number reserved by the parties for a second confirmation, starts an alternative short message verification code verification process, and saves the anti-tampering operation record.

[0021] Among them, this method first automatically calls the parties through the court-specified hotline system. During the call, a professional voice collection device is used to collect the voice characteristics of the answering party. With the help of a voiceprint recognition algorithm, a high-precision comparison is made with the data pre-stored in the identity database. At the same time, an asymmetric encryption algorithm is combined with a random number generator to generate an encrypted link with a time limit. This link contains a first verification code that can only be used once, and after performing a hash operation on the obtained base station positioning or GPS positioning information, it is incorporated into the verification code. In this dual-verification method, the identity of the parties is confirmed. After the identity verification is completed, the system automatically generates legal documents according to the preset format and template. Subsequently, the generated legal documents are split into at least three parts according to the logical structure such as paragraphs and chapters by using intelligent document parsing technology, and appropriate encryption algorithms are selected to encrypt each part according to its sensitivity. And using intelligent contract technology, an access period is set for each encrypted part according to factors such as the progress of the case trial and the need for evidence confidentiality. If the time limit is exceeded, access is automatically prohibited. Then, each part of the split and encrypted document is redundantly stored through the distributed storage nodes of the judicial blockchain platform. The decoding key of each encrypted part is directly bound to the identity information of the parties by using asymmetric encryption technology and saved in the secure key management system authorized by the court, and a storage mark related to the splitting and encryption of the legal document is generated. When the recipient views the document, the system obtains the preset corresponding content identifier in the storage mark through the blockchain platform and compares it with the second verification code of the currently decrypted data. If they are the same, it is determined that the data has not been tampered with. Otherwise, it is considered that the data may have been tampered with. At the same time, it automatically verifies whether the digital certificate of the issuing unit is recognized by the superior certification authority through a secure communication link, including operations such as querying the certificate invalidation list, real-time monitoring of the certificate status, extracting and comparing trusted timestamps, etc. Once the verification fails, the system automatically sends an encrypted text message containing a one-time verification code to the mobile phone number reserved by the parties through the judicial SMS gateway, requiring secondary identity confirmation to be completed within the preset time. If the time limit is exceeded, access is terminated, and the key data of the verification process is encrypted and recorded using blockchain timestamps and a preset algorithm, and synchronized to the preset node for evidence storage, thus constructing a complete, secure, and reliable intelligent verification process for legal documents.

[0022] Please refer to Figure 2 , Figure 2 is a flowchart of the dual identity authentication of an intelligent verification method for legal documents in some embodiments of the present application. According to the embodiments of the present invention, the dual identity authentication includes: S201. During the call of the court-specified hotline system, use a voice collection device to collect the voice characteristics of the answering party, and perform a high-precision match with the data pre-stored in the identity database through a voiceprint recognition algorithm; S202. Adopt an asymmetric encryption algorithm, combine a random number generator to generate an encrypted link with a time limit, and this link contains a first verification code that can only be used once; S203: The encrypted link is generated by adopting a double verification method, obtaining the user location information by acquiring base station positioning or GPS positioning information, and performing a hash operation on the user location information and adding it to the first verification code.

[0023] Among them, the dual identity authentication in the present invention is intended to ensure the authenticity and uniqueness of the identity of the parties, and to lay a solid security foundation for the subsequent legal document verification process. In the call interaction between the court-designated hotline system and the parties, with the help of professional voice collection equipment, the voice features generated by the answering party when speaking can be accurately captured. These features contain unique voiceprint information, and then advanced voiceprint recognition algorithms are used to perform high-precision comparisons of the collected voice features with the corresponding data pre-stored in the identity database to preliminarily confirm the identity of the parties. At the same time, the system uses an asymmetric encryption algorithm, combined with a random number generator, to generate an encrypted link with a time limit (for example, limited to 30 minutes). The link is embedded with a first verification code that can only be used once, and strictly limits link access in terms of time and number of uses to prevent the link from being maliciously stolen or reused. Not only that, the generation of the encrypted link also adopts a dual verification method, by obtaining base station positioning or GPS Positioning information, accurately locks the user's location, and performs hash operation on the location information, and cleverly adds the operation result to the verification code, forming a first-level verification based on identity characteristics and voiceprint information, and a second-level verification that integrates location information. The two-level verification complements each other, greatly enhancing the security of the identity authentication process, effectively resisting security risks such as identity fraud and forgery, and providing a reliable identity premise guarantee for the legal document verification process. Among them, for the relationship between asymmetric encryption algorithms, random numbers and encryption links, and verification codes: the random number generator generates a random number, which can be used as a key variable in the encryption process to increase the encryption chain. The unpredictability of the connection and verification code. In the process of generating the encrypted link, the random number, verification code and other information are first combined into a data packet, and then the server's private key is used to asymmetrically encrypt it to generate an encrypted link. Only the terminal with the corresponding public key can decrypt the link to obtain the random number, verification code and other information. When the subsequent parties view the document verification storage mark and the issuing unit certificate and click on the encrypted link, they will use the public key to decrypt the content in the link, obtain the random number and verification code, and then perform subsequent verification operations; Regarding the relationship between the verification code and the user location information after hash operation: the user's current location information is determined by obtaining base station positioning or GPS positioning information, and then the obtained user location information is hashed. The user location information is converted into a hash value. The hash value is used to ensure the uniqueness and non-tamperability of the location information, and then the hashed user location information is added to the verification code. In the process of generating the verification code, the hash value of the user location information obtained by the hash operation is used as part of the verification code or as an important parameter in the verification code generation algorithm.

[0024] Please refer to Figure 3 , Figure 3 which is a flowchart of legal document splitting and encryption for an intelligent verification method of legal documents in some embodiments of this application. According to the embodiments of the present invention, the splitting and encryption of legal documents includes: S301. According to the paragraph and chapter logical structure of the legal document, use intelligent document parsing technology to divide the legal document into at least 3 encrypted parts, and separately select different encryption algorithms to encrypt each part individually according to the preset importance of the information contained in different parts; S302. Through intelligent contract technology, add a preset access period to each encrypted part for control. This period is set according to the progress of the case trial and the confidentiality requirements of evidence. After the timeout, the intelligent contract automatically executes the access prohibition instruction.

[0025] Among them, in the process of splitting and encrypting legal documents of the present invention, through intelligent parsing, differential encryption and dynamic access control, a multi-level data security protection system is constructed. The system first uses intelligent document parsing technology to perform semantic analysis based on the paragraph and chapter logical structure of the legal document, and automatically splits the document into at least 3 independent encrypted parts, such as classifying the main content of the document, the sensitive information of the parties, evidence attachments, etc. For the preset importance of different parts, a hierarchical encryption strategy is adopted: for the information of the parties containing personal privacy, high-level symmetric encryption algorithms such as AES-256 are selected; for key legal terms and judgment bases, RSA asymmetric encryption algorithms are used; for general descriptive content, lightweight encryption algorithms are used. This differential encryption method not only ensures the security of sensitive data but also takes into account the system processing efficiency. At the access control level, the system dynamically adds a preset access period to each encrypted part through intelligent contract technology. This period is set according to the progress of the case trial and the confidentiality requirements of evidence. For example, a strict access time limit is set for the evidence part during the case investigation stage, and relevant documents are gradually opened during the court trial stage. The intelligent contract automatically monitors the timestamp, and once the preset period is exceeded, the access prohibition instruction is immediately triggered, and the blockchain consensus mechanism is used to ensure that the execution cannot be tampered with. This dynamic access control mechanism not only meets the phased information disclosure requirements in the judicial process but also prevents data from being accessed beyond authority or overdue, realizing the security management of the entire life cycle of legal documents.

[0026] Please refer to Figure 4 , Figure 4 which is a flowchart of generating storage marks related to legal document splitting and encryption for an intelligent verification method of legal documents in some embodiments of this application. According to the embodiments of the present invention, the generation of storage marks related to legal document splitting and encryption includes: S401. Redundantly store each part of the legally binding document after splitting and encryption through the distributed storage nodes of the judicial blockchain platform, and generate parameters related to the storage for recording the storage node address, encryption information, and storage time; S402. Adopt asymmetric encryption technology to directly bind the decoding key of each encrypted part with the identity information of the parties and store it in the secure key management system authorized by the court, generating storage marks related to the splitting and encryption of the legally binding document, including preset corresponding content identifiers; S403. Construct a data structure with the data blocks corresponding to each part of the legally binding document after splitting and encryption, the storage marks, the preset corresponding content identifiers, and the generated timestamp, and upload and store it on the blockchain platform.

[0027] Among them, in the present invention, the process of generating storage marks related to the splitting and encryption of the legally binding document combines distributed redundant storage with identity-bound key management to construct a highly secure storage system for the legally binding document. After the legally binding document is split and encrypted, the system redundantly stores each encrypted part through the distributed storage nodes of the judicial blockchain platform. Utilizing the decentralized and immutable characteristics of blockchain technology, the document data is stored in multiple nodes simultaneously, avoiding data loss caused by a single node failure and preventing malicious data tampering, ensuring the integrity and reliability of the document storage. At the same time, using asymmetric encryption technology, the decoding key corresponding to each encrypted part is directly bound with the identity information of the parties. Only the entity that matches the identity information of the parties can obtain the corresponding legally binding document content through decryption operations. These bound keys are stored in the secure key management system authorized by the court, which has strict access control and encryption protection measures, further ensuring the security of key storage. This enables the legally binding document to achieve secure data redundancy during the storage process and, through the key mechanism bound to the identity, ensures that only authorized parties can access it legally, effectively preventing document data leakage and illegal access, thus successfully generating storage marks related to the splitting and encryption of the legally binding document with high security and traceability; among them, the storage mark is a unique storage mark generated after binding the decoding key of the data block corresponding to each part of the split and encrypted legally binding document with the identity information of the parties, which includes a preset corresponding content identifier. The content identifier is used to identify the original position and content feature information of the data block corresponding to each part of the legally binding document in the legally binding document. For example, part of the identifier content can be obtained by performing a hash operation on the content of the original legally binding document or its key information through a hash algorithm, and combined with information related to the encryption level or importance to form a complete preset corresponding content identifier. Then, the data blocks, storage marks, preset corresponding content identifiers, and generated timestamps of each part of the legally binding document after splitting and encryption are organized into a specific data structure, such as represented in JSON format, and then the data structure is used as transaction data to construct a blockchain transaction and stored in the blockchain platform.

[0028] According to an embodiment of the present invention, when the recipient views the document, verifying the validity of the storage mark and the issuer's certificate includes: Obtaining a preset corresponding content identifier and a decoding key in the storage mark related to the splitting and encryption of legal documents through a blockchain platform; Decrypting the data blocks corresponding to each part of the legal document according to the decoding key to obtain the corresponding legal document data, and generating a second verification code for the legal document data according to a preset rule; Comparing the obtained preset corresponding content identifier with the second verification code corresponding to the currently decrypted legal document data; If the preset corresponding content identifier in the storage mark is consistent with the second verification code of the currently decrypted data, and the digital certificate of the issuer is recognized by the superior certification authority, the verification passes; otherwise, the verification fails; Automatically verifying whether the digital certificate of the issuer is recognized by the superior certification authority through a secure communication link.

[0029] Among them, when the recipient views a legal document, the system ensures the authenticity and legality of the document through a dual verification mechanism. First, in terms of storage mark verification, the system extracts the preset corresponding content identifier in the storage mark related to the splitting and encryption of the legal document through the blockchain platform. This identifier is a unique identifier generated during the splitting and encrypted storage of the legal document and records the original status information of the document. Through the query interface of the blockchain platform, according to the relevant information recorded when storing each data block of the legal document, such as transaction hash, storage address, etc., query the corresponding blockchain transaction data to obtain the preset corresponding content identifier in the storage mark. Obtain each data block of the split and encrypted legal document from the blockchain platform, and at the same time obtain the decoding key corresponding to this data block. Use the decoding key to decrypt each encrypted data block of the legal document to obtain the data of the original content of each part of the legal document. According to the data of the decrypted legal document, generate a second verification code according to the preset rules. The rules can be to perform a preset specific hash operation or mathematical transformation on a specific part of the data to obtain the second verification code. Then, extract the key elements to be compared from the obtained preset corresponding content identifier and the generated second verification code, such as the content feature information in the identifier and the verification value in the verification code. Compare the extracted key elements one by one to check whether they are consistent. If they are consistent, it indicates that the integrity and correctness of the data of the decrypted legal document have been verified and are consistent with the content of the legal document corresponding to the content identifier stored on the blockchain. If they are inconsistent, there may be data tampering or other security issues. At the same time, the system automatically verifies the digital certificate of the issuing unit through a secure communication link. This verification process relies on the digital certificate authentication system and automatically verifies whether the certificate has been legally authorized and recognized through a secure connection established with the superior certification authority. Only when the digital certificate is in an effective state and is recognized by the superior certification authority can it be confirmed that the issuing source of the document has legality and authority, further ensuring that the document viewed by the recipient is legally issued by a regular judicial institution, and comprehensively guaranteeing the credibility and effectiveness of the legal document from two key dimensions of storage status and issuing source.

[0030] According to an embodiment of the present invention, the automatic verification through the secure communication link of whether the digital certificate of the issuing unit is recognized by the superior certification authority includes: Automatically query the certificate invalidation list through the real-time data interaction interface, and use the status monitoring program to detect the certificate status in real time. When a invalid certificate is detected, a warning is issued; Use a dedicated timestamp extraction tool to extract a trusted timestamp from the electronic signature of the legal document and compare it with the standard time source provided by the National Time Service Center to determine whether the timestamp is within the valid period certified by the National Time Service Center.

[0031] Among them, the verification of the digital certificate of the issuing unit in the present invention uses multi-dimensional and real-time verification means to ensure the validity and legality of the certificate. The system automatically connects to the authoritative certificate revocation list database through a real-time data interaction interface, continuously synchronizes the latest certificate revocation information, and uses a status monitoring program to scan the certificate status in real time at a millisecond level. Once it is found that the certificate is in a revoked, expired or other invalid state, the warning mechanism is immediately triggered to send a warning to relevant personnel to avoid security risks caused by using an invalid certificate. At the same time, the system enables a dedicated timestamp extraction tool to extract a trusted timestamp from the electronic signature of the legal document, which records the exact moment of the document issuance. Subsequently, the system strictly compares the extracted timestamp with the high-precision standard time source provided by the National Time Service Center to accurately verify whether the timestamp is within the validity period certified by the National Time Service Center. Only when the timestamp is within the validity period can it be confirmed that the document issuance time is true and credible and meets the time specification requirements of the judicial process. Through the above double-verification mechanism, the validity of the digital certificate of the issuing unit is comprehensively and accurately verified from two key aspects of the certificate status and the issuance time, providing a solid guarantee for the authority of legal documents.

[0032] According to an embodiment of the present invention, when the verification fails, the receiving party automatically sends a short message verification code to the mobile phone number reserved by the party for a second confirmation, starts an alternative short message verification code verification process, and saves the anti-tampering operation record, including: When the verification fails, the preset short message sending module automatically sends an encrypted short message containing a one-time short message verification code to the mobile phone number reserved by the party through the judicial short message gateway; Limit the completion of the secondary identity confirmation within a preset time, and terminate the access if the time limit is exceeded; Use blockchain timestamps and a preset encryption algorithm to encrypt and record the key data in the verification process, including the identity information and short message verification code of the party, the verification time, and synchronize it to a preset judicial evidence storage node for evidence storage.

[0033] Among them, when an abnormality occurs in the verification process of the legal document viewed by the recipient and the verification fails, the present invention ensures the security of evidence access and the traceability of operations through a multi-level backup verification mechanism and a tamper-proof evidence storage strategy. The preset SMS sending module of the system first automatically calls the judicial SMS gateway to send an encrypted SMS containing a one-time verification code to the mobile phone number pre-retained by the party. The verification code is generated by a high-strength encryption algorithm, has timeliness and uniqueness, and effectively prevents the verification code from being stolen or misused. At the same time, the system starts a strict time control mechanism, requiring the party to complete the secondary identity confirmation operation within the preset time. Once the time limit is exceeded, the access permission will be immediately terminated to avoid potential security risks caused by the long-term opening of the verification window. During the verification process, the system uses the immutable feature of blockchain technology and combines it with a preset encryption algorithm to encrypt and record the key data (including the party's identity information, verification code, and verification time) in the entire verification process in real time, and synchronizes it to the preset judicial evidence storage node through the blockchain consensus mechanism. Each operation record is assigned a blockchain timestamp, which is calibrated by the standard time source provided by the National Time Service Center to ensure the authority and authenticity of the time. In this way, not only the full-process supervision of the backup verification process is realized, but also a reliable audit basis is provided for possible disputes in the future, thus building a complete and rigorous security protection system to comprehensively ensure the security and reliability of the litigation evidence verification process.

[0034] According to an embodiment of the present invention, the court-designated hotline system is connected to a judicial dedicated terminal, and the terminal includes: A touch-type identity verification device embedded in the court filing hall, equipped with a fingerprint / vein biometric recognition module; The device is built-in with a judicial electronic tag writer to generate an NFC physical tag containing the outbound call time and geographical coordinates; Establish a direct communication channel with the court intranet server through a dedicated frequency band.

[0035] Among them, the terminal is embedded in the touch-type operation interface of the court filing hall, and is built-in with a fingerprint recognition and vein biometric acquisition module to achieve high-precision identity verification; the device is equipped with a judicial electronic tag writer, which automatically generates a physical tag with an encryption algorithm after the verification is passed, and key information such as the outbound call timestamp, device geographical coordinates, and case number are written in the tag to ensure the traceability of each operation; the terminal establishes a physically isolated direct communication channel with the court intranet server through a judicial dedicated frequency band, and uses a quantum encryption protocol to ensure that the data transmission is protected against eavesdropping and tampering throughout the process. The terminal system realizes the judicial-level protection of the party's identity confirmation, the solidification of operation time and space information, and the data transmission security through the "biometric verification—electronic tag—private network communication" technology closed-loop, meeting the mandatory security requirements for terminal devices.

[0036] According to an embodiment of the present invention, the dual identity authentication is connected to the population information database of the relevant department, including: Real-time retrieval of the ID card feature code of the party concerned and live comparison with the portrait taken on site; Verify the real-name registration information of the party’s mobile phone number through the dedicated interface of the relevant department; Generate enhanced authentication credentials that include police badge logo.

[0037] The system retrieves the encrypted signature code of the person's ID photo in real time and performs a dynamic liveness comparison with a live video stream of the person captured on-site. It utilizes liveness detection algorithms (such as blinking and head shaking recognition) to prevent photo or video forgery. Simultaneously, via an encrypted dedicated line, it connects to the relevant department's real-name mobile phone number database to verify that the person's provided mobile phone number matches the ID information, ensuring the authenticity of the communication identity. Once verified, the system automatically generates an enhanced verification certificate containing a police badge logo, a digital signature, and a verification timestamp. This certificate is encrypted and issued using the relevant department's electronic signature system and stored on the blockchain evidence storage platform. This collaborative mechanism of direct connection to relevant departmental databases, live biometric verification, and authoritative certificate generation achieves a closed-loop judicial identity authentication system characterized by "person-ID consistency, number-ID correlation, and certificate anti-counterfeiting." This meets statutory requirements for identity verification and effectively prevents the risk of identity theft in litigation scenarios.

[0038] According to an embodiment of the present invention, the further embodiment includes: Collect the heart rate, body temperature and vital signs data of the person in real time, and perform multimodal feature fusion with the voiceprint and fingerprint verification results to generate a bioactivity index; When the biological activity index is lower than the preset activity threshold, the backup verification process is forcibly triggered.

[0039] The system collects real-time heart rate fluctuations and surface temperature distribution data from the individual, combines them with voiceprint spectrum features and fingerprint minutiae matching results, and uses a weighted fusion algorithm to generate a dynamic bioactivity index (BAI). When the BAI falls below a preset activity threshold (for example, if the heart rate rises abnormally to >120 bpm or the body temperature drops >2°C due to coercion), the system automatically determines that a biometric forgery risk exists, immediately interrupts the current verification process, and forcibly initiates a backup verification mechanism. A verification request containing geolocation information is sent to the individual's pre-assigned emergency contact, while SMS secondary verification and anti-tampering logging are activated. By integrating dynamic activity monitoring of multimodal physiological signs with traditional biometric verification, a three-dimensional risk identification model based on "physiological state, biometrics, and behavioral anomalies" is constructed. This effectively prevents identity theft in complex scenarios such as coercion and drug control, meeting enhanced verification requirements for high-risk scenarios.

[0040] The present invention also discloses an intelligent verification system for legal documents, including a memory and a processor. The memory stores a program for an intelligent verification method of legal documents. When the program for the intelligent verification method of legal documents is executed by the processor, the following steps are implemented: Automatically contact the parties through the court-specified hotline system, and conduct double identity verification on the parties by means of voice feature matching and generating a time-limited encrypted link. After the verification is passed, generate legal documents according to the preset format, template and specific case information; Split and encrypt the legal documents and store them in the designated judicial blockchain platform, and generate a storage mark related to the splitting and encryption of the legal documents; When the recipient views the document, verify the validity of the storage mark and the issuer's certificate; When the verification fails, the recipient automatically sends a short message verification code to the mobile phone number reserved by the party for a second confirmation, starts an alternative short message verification code verification process, and saves the anti-tampering operation record.

[0041] Among them, in this method, the court-designated hotline system first automatically calls the parties. During the call, professional voice collection equipment is used to collect the voice characteristics of the answering party. With the help of a voiceprint recognition algorithm, a high-precision comparison is made with the data pre-stored in the identity database. At the same time, an asymmetric encryption algorithm is combined with a random number generator to generate an encrypted link with a time limit. This link contains a first verification code that can only be used once, and the base station location or GPS location information is obtained and incorporated into the verification code after hashing operation through this dual verification method to confirm the identity of the parties. After the identity verification is completed, the system automatically generates legal documents according to the preset format and template. Subsequently, the generated legal documents are split into at least three parts according to the logical structure such as paragraphs and chapters by using intelligent document parsing technology, encrypted with appropriate encryption algorithms according to the sensitivity of each part, and the access period is set flexibly based on factors such as the progress of the case trial and the need for evidence confidentiality for each encrypted part by using intelligent contract technology. Once the time limit is exceeded, access is automatically prohibited. Then, each part of the split and encrypted document is redundantly stored through the distributed storage nodes of the judicial blockchain platform. The decoding key of each encrypted part is directly bound to the party's identity information by using asymmetric encryption technology and stored in the secure key management system authorized by the court, generating a storage mark related to the splitting and encryption of the legal document. When the recipient views the document, the system obtains the preset corresponding content identifier in the storage mark through the blockchain platform and compares it with the second verification code of the currently decrypted data. If they are consistent, it is determined that the data has not been tampered with; otherwise, it is considered that the data may have been tampered with. At the same time, the digital certificate of the issuing unit is automatically verified through the secure communication link to check whether it is recognized by the superior certification authority, including operations such as querying the certificate invalidation list, real-time monitoring of the certificate status, extracting and comparing the trusted time stamps, etc. Once the verification fails, the system automatically sends an encrypted text message containing a one-time verification code to the mobile phone number reserved by the parties through the judicial SMS gateway, requiring secondary identity confirmation within the preset time. If the time limit is exceeded, access is terminated, and the key data of the verification process is encrypted and recorded using blockchain timestamps and preset algorithms, and synchronized to the preset node for evidence storage, thus constructing a complete, secure, and reliable intelligent verification process for legal documents.

[0042] According to an embodiment of the present invention, the dual identity authentication includes: During the call of the court-designated hotline system, the voice characteristics of the answering party are collected by using voice collection equipment, and a high-precision match is made with the data pre-stored in the identity database through a voiceprint recognition algorithm; An asymmetric encryption algorithm is used, combined with a random number generator to generate an encrypted link with a time limit. This link contains a first verification code that can only be used once; The generation of the encrypted link adopts a dual verification method. The user location information is obtained by acquiring the base station location or GPS location information, and it is hashed and then added to the first verification code.

[0043] Among them, the dual-factor authentication in the present invention aims to ensure the authenticity and uniqueness of the identity of the parties, laying a solid security foundation for the subsequent verification process of legal documents. During the call interaction between the court-designated hotline system and the parties, with the help of professional voice collection equipment, the voice characteristics generated when the answering party speaks can be accurately captured. These characteristics include unique voiceprint information. Subsequently, using advanced voiceprint recognition algorithms, the collected voice characteristics are compared with the corresponding data pre-stored in the identity database with high precision to preliminarily confirm the identity of the parties. At the same time, the system uses an asymmetric encryption algorithm, combined with a random number generator, to generate an encrypted link with a time limit (for example, limited within 30 minutes). The link embeds a first verification code that can only be used once, strictly restricting the access to the link in terms of time and usage times to prevent the link from being maliciously stolen or reused. Moreover, the generation of the encrypted link also adopts a dual-verification method. By obtaining base station positioning or GPS positioning information, the user's location is accurately locked, and the location information is subjected to a hash operation. The operation result is skillfully added to the verification code, forming the first layer of verification based on identity characteristics and voiceprint information, and the second layer of verification integrating location information. The two layers of verification complement each other, greatly enhancing the security of the identity authentication process, effectively resisting security risks such as identity theft and forgery, and providing a reliable identity prerequisite guarantee for the legal document verification process. Among them, regarding the relationship between the asymmetric encryption algorithm, random number, encrypted link, and verification code: The random number generator generates a random number, which can be used as a key variable in the encryption process to increase the unpredictability of the encrypted link and verification code. During the generation of the encrypted link, information such as the random number and verification code is first combined into a data packet, and then the private key of the server is used to perform asymmetric encryption on it to generate the encrypted link. Only the terminal with the corresponding public key can decrypt the link to obtain the random number, verification code, and other information in it. When the subsequent parties click on the encrypted link when viewing the document verification storage mark and the issuer's certificate, the content in the link will be decrypted using the public key to obtain the random number and verification code, and then subsequent verification operations will be carried out; regarding the relationship between the verification code and the user's location information after hash operation: The user's current location information is determined by obtaining base station positioning or GPS positioning information, and then the obtained user location information is subjected to a hash operation. The user location information is converted into a hash value, which ensures the uniqueness and non-tamperability of the location information through the hash value. Then, the hashed user location information is added to the verification code. During the generation of the verification code, the hash value of the user location information obtained through the hash operation is used as a part of the verification code or as an important parameter to participate in the verification code generation algorithm.

[0044] According to an embodiment of the present invention, the splitting and encryption of legal documents includes: According to the paragraph and chapter logical structure of legal documents, use intelligent document parsing technology to divide legal documents into at least 3 encrypted parts, and separately encrypt each part using different encryption algorithms according to the preset importance of the information contained in different parts; Through smart contract technology, add a preset access period to each encrypted part for control. This period is set according to the progress of the case trial and the confidentiality requirements of evidence. After the timeout, the smart contract automatically executes the access prohibition instruction.

[0045] Among them, the process of splitting and encrypting legal documents of the present invention constructs a multi-level data security protection system through intelligent parsing, differential encryption and dynamic access control. The system first uses intelligent document parsing technology to perform semantic analysis based on the paragraph and chapter logical structure of legal documents, and automatically splits the documents into at least 3 independent encrypted parts, such as classifying the main content of the document, the sensitive information of the parties, and the evidence attachments. For the preset importance of different parts, a hierarchical encryption strategy is adopted: for the information of the parties containing personal privacy, advanced symmetric encryption algorithms such as AES-256 are selected; for key legal terms and judgment bases, RSA asymmetric encryption algorithms are used; for general description content, lightweight encryption algorithms are used. This differential encryption method not only ensures the security of sensitive data but also takes into account the system processing efficiency. At the access control level, the system dynamically adds a preset access period to each encrypted part through smart contract technology. This period is set according to the progress of the case trial and the confidentiality requirements of evidence. For example, a strict access time limit is set for the evidence part during the case investigation stage, and relevant documents are gradually opened during the court trial stage. The smart contract automatically monitors the timestamp, and once it exceeds the preset period, it immediately triggers the access prohibition instruction, and ensures the non-tampering execution through the blockchain consensus mechanism. This dynamic access control mechanism not only meets the phased information disclosure requirements in the judicial process but also prevents data from being accessed beyond authority or over the time limit, realizing the security management of the entire life cycle of legal documents.

[0046] According to an embodiment of the present invention, the generation of storage marks related to the splitting and encryption of legal documents includes: Redundantly store each part of the split and encrypted legal documents through the distributed storage nodes of the judicial blockchain platform, and generate parameters related to storage for recording the storage node address, encryption information and storage time; Adopt asymmetric encryption technology to directly bind the decoding key of each encrypted part with the identity information of the parties and save it in the secure key management system authorized by the court, generating storage marks related to the splitting and encryption of legal documents, including preset corresponding content identifiers; Construct a data structure with the data blocks corresponding to each part of the split and encrypted legal documents, storage marks, preset corresponding content identifiers and generated timestamps, and upload and store it on the blockchain platform.

[0047] Among them, in the process of generating storage tags related to the splitting and encryption of legal documents in the present invention, a highly secure storage system for legal documents is constructed by combining distributed redundant storage and identity-bound key management. After the legal documents are split and encrypted, the system redundantly stores each encrypted part through the distributed storage nodes of the judicial blockchain platform. Utilizing the decentralized and tamper-proof characteristics of blockchain technology, the document data is stored in multiple nodes simultaneously, avoiding data loss caused by a single node failure and preventing data from being maliciously tampered with, ensuring the integrity and reliability of document storage. At the same time, using asymmetric encryption technology, the decoding keys corresponding to each encrypted part are directly bound to the identity information of the parties. Only the entity that matches the identity information of the parties can obtain the corresponding legal document content through decryption operations. These bound keys are saved in a secure key management system authorized by the court, which has strict access control and encryption protection measures, further ensuring the security of key storage. This enables the legal documents to achieve secure redundancy of data during the storage process and, through the identity-bound key mechanism, ensures that only authorized parties can access legally, effectively preventing document data leakage and illegal access, thus successfully generating storage tags related to the splitting and encryption of legal documents with high security and traceability; among them, the storage tag is a unique storage tag generated after binding the decoding keys of the data blocks corresponding to each part of the split and encrypted legal document with the identity information of the parties, which contains a preset corresponding content identifier. The content identifier is used to identify the original position and content feature information of the data blocks corresponding to each part of the legal document in the legal document. For example, part of the identifier content can be obtained by performing a hash operation on the original legal document content or its key information through a hash algorithm, and combined with information related to the encryption level or importance to form a complete preset corresponding content identifier. Then, the data blocks, storage tags, preset corresponding content identifiers, and generated timestamps of each part of the split and encrypted legal document are organized into a specific data structure, such as represented in JSON format, and the data structure is used as transaction data to construct a blockchain transaction and stored in the blockchain platform.

[0048] According to an embodiment of the present invention, the verification of the validity of the storage tag and the issuer's certificate when the recipient views the document includes: Obtaining the preset corresponding content identifier and the decoding key in the storage tag related to the splitting and encryption of legal documents through the blockchain platform; Decrypting the data blocks corresponding to each part of the legal document according to the decoding key to obtain the corresponding legal document data, and generating a second verification code for the legal document data according to a preset rule; Comparing the obtained preset corresponding content identifier with the second verification code corresponding to the currently decrypted legal document data; If the preset corresponding content identifier in the storage tag is consistent with the second verification code of the current decrypted data, and the digital certificate of the issuing entity is recognized by the superior certification authority, the verification passes; otherwise, the verification fails. Automatically verify whether the digital certificate of the issuing entity is recognized by the superior certification authority through the secure communication link.

[0049] Among them, when the recipient views the legal document, the system ensures the authenticity and legality of the document through a dual-verification mechanism. First, in terms of storage tag verification, the system extracts the preset corresponding content identifier in the storage tag related to the split encryption of the legal document through the blockchain platform. This identifier is a unique identifier generated during the split encryption storage of the legal document and records the original status information of the document. Through the query interface of the blockchain platform, according to the relevant information recorded when storing each data block of the legal document, such as transaction hash, storage address, etc., query the corresponding blockchain transaction data to obtain the preset corresponding content identifier in the storage tag. Obtain each data block of the split-encrypted legal document from the blockchain platform, and at the same time obtain the decoding key corresponding to this data block. Use the decoding key to decrypt each encrypted data block of the legal document to obtain the data of the original content of each part of the legal document. According to the data corresponding to the decrypted legal document, generate a second verification code according to the preset rules. The rules can be to perform a preset specific hash operation or mathematical transformation on a specific part of the data to obtain the second verification code. Then, from the obtained preset corresponding content identifier and the generated second verification code, extract the key elements to be compared, such as the content feature information in the identifier and the verification value in the verification code. Compare the extracted key elements one by one to check whether they are consistent. If they are consistent, it indicates that the integrity and correctness of the data of the decrypted legal document have been verified, and it is consistent with the content of the legal document corresponding to the content identifier stored on the blockchain. If they are inconsistent, there may be data tampering or other security issues. At the same time, the system automatically verifies the digital certificate of the issuing entity through the secure communication link. This verification process relies on the digital certificate authentication system and automatically verifies whether the certificate has been legally authorized and recognized by establishing a secure connection with the superior certification authority. Only when the digital certificate is in an effective state and is recognized by the superior certification authority can it be confirmed that the issuing source of the document has legality and authority, further ensuring that the document viewed by the recipient is legally issued by a regular judicial institution, and comprehensively guaranteeing the credibility and effectiveness of the legal document from two key dimensions of storage status and issuing source.

[0050] According to an embodiment of the present invention, the automatic verification of whether the digital certificate of the issuing entity is recognized by the superior certification authority through the secure communication link includes: Automatically query the list of invalid certificates through the real-time data interaction interface, use the status monitoring program to detect the certificate status in real time, and issue a warning when an invalid certificate is detected; Use a dedicated timestamp extraction tool to extract a trusted timestamp from the electronic signature of a legal document, and compare it with the standard time source provided by the National Time Service Center to determine whether the timestamp is within the validity period certified by the National Time Service Center.

[0051] Among them, the verification of the digital certificate of the issuing unit in the present invention ensures the validity and legality of the certificate through multi-dimensional and real-time verification means. The system automatically connects to the authoritative certificate invalidation list database through the real-time data interaction interface, continuously synchronizes the latest certificate invalidation information, and uses the status monitoring program to scan the certificate status in real time at a millisecond level. Once it is found that the certificate is in an invalid state such as revocation or expiration, the early warning mechanism is immediately triggered to send a warning to relevant personnel to avoid security risks caused by using an invalid certificate. At the same time, the system enables a dedicated timestamp extraction tool to accurately extract a trusted timestamp from the electronic signature tightly bound to the legal document, and this timestamp records the accurate moment of the document issuance. Subsequently, the system strictly compares the extracted timestamp with the high-precision standard time source provided by the National Time Service Center to accurately verify whether the timestamp is within the validity period certified by the National Time Service Center. Only when the timestamp is within the validity period can it be confirmed that the document issuance time is true and reliable and meets the time specification requirements of the judicial process. Through the above dual verification mechanism, the validity of the digital certificate of the issuing unit is comprehensively and accurately verified from two key aspects of the certificate status and the issuance time, providing a solid guarantee for the authority of legal documents.

[0052] According to an embodiment of the present invention, when the verification fails, the receiving party automatically sends a short message verification code to the mobile phone number reserved by the party for a second confirmation, starts an alternative short message verification code verification process, and saves the anti-tampering operation record, including: When the verification fails, automatically send an encrypted short message containing a one-time short message verification code to the mobile phone number reserved by the party through the judicial short message gateway by a preset short message sending module; Limit the completion of the secondary identity confirmation within a preset time, and terminate the access if the time limit is exceeded; Use blockchain timestamp and a preset encryption algorithm to encrypt and record the key data in the verification process, including the identity information of the party, the short message verification code, and the verification time, and synchronize it to a preset judicial evidence storage node for evidence storage.

[0053] When the recipient encounters an anomaly in the verification process for a legal document and determines that the verification has failed, the present invention ensures secure access to evidence and traceability of the operation through a multi-layered backup verification mechanism and tamper-resistant evidence storage strategy. The system's pre-set SMS sending module first automatically invokes the judicial SMS gateway to send an encrypted SMS message containing a one-time verification code to the mobile phone number previously registered by the party. This verification code, generated using a high-strength encryption algorithm, is both timely and unique, effectively preventing theft or misuse. Furthermore, the system implements a strict time control mechanism, requiring the party to complete a secondary identity verification operation within a preset timeframe. Access rights are immediately terminated if the timeframe is exceeded, thus avoiding potential security risks caused by prolonged verification windows. During the verification process, the system leverages the tamper-proof nature of blockchain technology, combined with a pre-set encryption algorithm, to encrypt and record key data from the entire verification process (including the party's identity information, verification code, and verification time) in real time. This data is then synchronized to a pre-set judicial evidence storage node through a blockchain consensus mechanism. Each operation record is assigned a blockchain timestamp, calibrated using a standard time source provided by the National Time Service Center, ensuring the authority and authenticity of the time. In this way, not only is full-process supervision of the backup verification process achieved, but a reliable audit basis is also provided for subsequent disputes that may arise, thereby building a complete and strict security protection system to comprehensively ensure the security and reliability of the litigation evidence verification process.

[0054] According to an embodiment of the present invention, the court-designated hotline system is connected to a judicial-specific terminal, which includes: A touch-screen identity verification device embedded in the court filing hall is equipped with a fingerprint / finger vein dual-mode biometric recognition module; The device has a built-in judicial electronic tag writer that generates an NFC physical tag containing the outbound call time and geographic coordinates; Establish a direct communication channel with the court's intranet server through a dedicated frequency band.

[0055] The terminal, embedded in the court filing hall's touchscreen interface, features built-in fingerprint recognition and dual-mode finger vein biometric acquisition modules for high-precision identity verification. Equipped with a judicial electronic tag writer, the device automatically generates a physical tag with an encryption algorithm upon verification. The tag contains key information such as the outbound call timestamp, the device's geographic coordinates, and the case number, ensuring the traceability of each operation. The terminal establishes a physically isolated direct communication channel with the court's intranet server via a dedicated judicial frequency band, employing quantum encryption protocols to protect data transmission from eavesdropping and tampering. This terminal system, through a closed-loop "biometric verification - electronic tag - dedicated network communication" technology, provides judicial-grade protection for party identity confirmation, consolidates operational temporal and spatial information, and secures data transmission, meeting mandatory security requirements for terminal devices.

[0056] According to an embodiment of the present invention, the dual identity authentication is connected to the population information database of the relevant department, including: Real-time retrieval of the ID card feature code of the party concerned and live comparison with the portrait taken on site; Verify the real-name registration information of the party’s mobile phone number through the dedicated interface of the relevant department; Generate enhanced authentication credentials that include police badge logo.

[0057] The system retrieves the encrypted signature code of the person's ID photo in real time and performs a dynamic liveness comparison with a live video stream of the person captured on-site. It utilizes liveness detection algorithms (such as blinking and head shaking recognition) to prevent photo or video forgery. Simultaneously, via an encrypted dedicated line, it connects to the relevant department's real-name mobile phone number database to verify that the person's provided mobile phone number matches the ID information, ensuring the authenticity of the communication identity. Once verified, the system automatically generates an enhanced verification certificate containing a police badge logo, a digital signature, and a verification timestamp. This certificate is encrypted and issued using the relevant department's electronic signature system and stored on the blockchain evidence storage platform. This collaborative mechanism of direct connection to relevant departmental databases, live biometric verification, and authoritative certificate generation achieves a closed-loop judicial identity authentication system characterized by "person-ID consistency, number-ID correlation, and certificate anti-counterfeiting." This meets statutory requirements for identity verification and effectively prevents the risk of identity theft in litigation scenarios.

[0058] According to an embodiment of the present invention, the further embodiment includes: Collect the heart rate, body temperature and vital signs data of the person in real time, and perform multimodal feature fusion with the voiceprint and fingerprint verification results to generate a bioactivity index; When the biological activity index is lower than the preset activity threshold, the backup verification process is forcibly triggered.

[0059] The system collects real-time heart rate fluctuations and surface temperature distribution data from the individual, combines them with voiceprint spectrum features and fingerprint minutiae matching results, and uses a weighted fusion algorithm to generate a dynamic bioactivity index (BAI). When the BAI falls below a preset activity threshold (for example, if the heart rate rises abnormally to >120 bpm or the body temperature drops >2°C due to coercion), the system automatically determines that a biometric forgery risk exists, immediately interrupts the current verification process, and forcibly initiates a backup verification mechanism. A verification request containing geolocation information is sent to the individual's pre-assigned emergency contact, while SMS secondary verification and anti-tampering logging are activated. By integrating dynamic activity monitoring of multimodal physiological signs with traditional biometric verification, a three-dimensional risk identification model based on "physiological state, biometrics, and behavioral anomalies" is constructed. This effectively prevents identity theft in complex scenarios such as coercion and drug control, meeting enhanced verification requirements for high-risk scenarios.

[0060] In a third aspect of the present invention, there is provided a computer-readable storage medium, which includes a program for an intelligent verification method of legal documents. When the program for the intelligent verification method of legal documents is executed by a processor, the steps of the intelligent verification method of legal documents as described in any one of the above are implemented.

[0061] An intelligent verification method, system and medium for legal documents disclosed by the present invention construct a full-process security system covering identity authentication, document processing, storage verification and exception handling. In the identity authentication link, through the court-specified hotline system, double verification of voiceprint recognition and time-limited encrypted link is combined, and at the same time, the population information database of relevant departments is linked for live portrait comparison and mobile phone number real-name verification, and physiological data such as heart rate and body temperature are collected and multimodally fused with traditional biometric features to ensure the authenticity of the parties' identities and the security of operations; in the document processing stage, intelligent document parsing technology is used to split legal documents according to the logical structure, a hierarchical encryption algorithm is adopted for content with different sensitivity levels, and a dynamic access period is set using smart contracts; in the storage link, the split and encrypted documents are stored redundantly in a distributed manner through a judicial blockchain platform, and at the same time, the decoding key is bound to the identity information of the parties to generate a storage mark related to the split and encryption of legal documents that is secure and traceable; when the recipient views, the integrity of the data is verified by comparing the content identifier of the storage mark with the decryption data verification code, and the validity of the digital certificate of the issuing unit is verified through a secure communication link, including real-time monitoring of the certificate status and comparison of trusted timestamps; if the verification fails, an encrypted SMS verification code is automatically sent to initiate an alternative SMS verification code verification process, and a second confirmation is completed within a limited time, and at the same time, key data of the verification process is encrypted and recorded using blockchain timestamps. In addition, the supporting court-specified hotline system is connected to a judicial dedicated terminal, and through fingerprint / vein dual-mode recognition, electronic tag generation, and private network encrypted communication, the security protection of terminal operations is realized, and finally a set of strict, reliable and judicially compliant intelligent verification system for legal documents is formed, effectively improving the security, accuracy and judicial efficiency of evidence verification.

[0062] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling or communication connection between the various components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms.

[0063] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units; they may be located in one place or distributed over multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0064] In addition, each functional unit in the embodiments of the present invention can be fully integrated into one processing unit, or each unit can be separately used as a unit alone, or two or more units can be integrated into one unit; the above-mentioned integrated unit can be implemented in the form of hardware or in the form of a combination of hardware and software functional units.

[0065] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a readable storage medium. When the program is executed, it performs the steps including the above method embodiments; and the foregoing storage medium includes: removable storage devices, read-only memories, random access memories, magnetic disks, or optical disks and other various media that can store program codes.

[0066] Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present invention essentially or the part that contributes to the prior art can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the foregoing storage medium includes: removable storage devices, ROM, RAM, magnetic disks, or optical disks and other various media that can store program codes.

Claims

1. An intelligent verification method for legal documents, characterized in that, It includes the following steps: Automatically contact the parties through the court-specified hotline system, and conduct dual identity verification on the parties by using voice feature matching and generating an encrypted link with a time limit. After successful verification, generate legal documents according to the preset format, template, and specific case information; Split and encrypt the legal documents and store them in the specified judicial blockchain platform, generating a storage mark related to the split and encryption of the legal documents; When the recipient views the document, verify the validity of the storage mark and the issuer's certificate; When the verification fails, the recipient automatically sends a SMS verification code to the mobile phone number reserved by the party for a second confirmation, starts an alternative SMS verification code verification process, and saves the anti-tampering operation record.

2. The intelligent verification method for legal documents according to claim 1, wherein The dual identity authentication includes: During the call on the court-specified hotline system, collect the voice features of the answering party by using a voice collection device, and perform high-precision matching with the data pre-stored in the identity database through a voiceprint recognition algorithm; Adopt an asymmetric encryption algorithm, combined with a random number generator, to generate an encrypted link with a time limit, which contains a first verification code that can only be used once; The generation of the encrypted link adopts a dual verification method. Obtain the user location information by getting the base station location or GPS location information, and add it to the first verification code after hashing operation.

3. The intelligent verification method of legal documents according to claim 1, wherein The splitting and encryption of the legal documents includes: According to the paragraph and chapter logical structure of the legal document, use intelligent document parsing technology to divide the legal document into at least 3 encrypted parts, and separately encrypt each part with different encryption algorithms according to the preset importance of the information contained in different parts; Through intelligent contract technology, add a preset access period to each encrypted part for control. This period is set according to the progress of the case trial and the evidence confidentiality requirements. After the timeout, the intelligent contract automatically executes the access prohibition instruction.

4. A legal document intelligent verification method according to claim 3, characterized in that, The generation of the storage mark related to the split and encryption of the legal documents includes: Redundantly store each part of the split and encrypted legal document through the distributed storage nodes of the judicial blockchain platform, and generate parameters related to the storage, which are used to record the storage node address, encryption information, and storage time; Adopt asymmetric encryption technology to directly bind the decoding key of each encrypted part with the identity information of the party and save it in the court-authorized secure key management system, generating a storage mark related to the split and encryption of the legal documents, including a preset corresponding content identifier; Construct a data structure with the data blocks corresponding to each part of the split and encrypted legal document, the storage mark, the preset corresponding content identifier, and the generated timestamp, and upload and store it on the blockchain platform.

5. A method for intelligent verification of legal documents according to claim 1, characterized in that When the recipient views the document, verifying the validity of the storage mark and the issuer's certificate includes: Obtain the preset corresponding content identifier and the decoding key in the storage mark related to the split and encryption of the legal document through the blockchain platform; Decrypt the data blocks corresponding to each part of the legal document according to the decoding key to obtain the corresponding legal document data, and generate a second verification code for the legal document data according to the preset rules; Compare the obtained preset corresponding content identifier with the second verification code corresponding to the currently decrypted legal document data; If the preset corresponding content identifier in the storage mark is consistent with the second verification code of the current decrypted data, and the digital certificate of the issuing unit is recognized by the superior certification authority, the verification passes; otherwise, the verification fails. Automatically verify whether the digital certificate of the issuing unit is recognized by the superior certification authority through a secure communication link.

6. A method for intelligent verification of legal documents according to claim 5, characterized in that The automatic verification through the secure communication link of whether the digital certificate of the issuing unit is recognized by the superior certification authority includes: Automatically query the certificate invalidation list through a real-time data interaction interface, use a status monitoring program to detect the certificate status in real time, and issue a warning when a invalid certificate is detected. Use a dedicated timestamp extraction tool to extract a trusted timestamp from the electronic signature of the legal document, and compare it with the standard time source provided by the National Time Service Center to determine whether the timestamp is within the validity period certified by the National Time Service Center.

7. A method for intelligent verification of legal documents according to claim 1, characterized in that, When the verification fails, the receiving party automatically sends a SMS verification code to the mobile phone number reserved by the party for a second confirmation, starts an alternative SMS verification code verification process, and saves the anti-tampering operation record, including: When the verification fails, automatically send an encrypted SMS containing a one-time SMS verification code to the mobile phone number reserved by the party through the judicial SMS gateway via a preset SMS sending module. Limit the completion of the secondary identity confirmation within a preset time, and terminate the access if the time limit is exceeded. Use blockchain timestamps and a preset encryption algorithm to encrypt and record key data during the verification process, including the identity information of the party, the SMS verification code, and the verification time, and synchronize it to a preset judicial deposit node for deposit.

8. An intelligent verification system for legal documents, characterized in that, It includes a memory and a processor. The memory stores a program for an intelligent verification method of legal documents. When the program for the intelligent verification method of legal documents is executed by the processor, the following steps are implemented, specifically: Automatically contact the party through the court-specified hotline system, and conduct dual identity verification on the party by using voice feature matching and generating a time-limited encrypted link. After the verification passes, generate a legal document according to a preset format, template, and specific case information. Split and encrypt the legal document and store it in the designated judicial blockchain platform, and generate a storage mark related to the splitting and encryption of the legal document. When the receiving party views the document, verify the validity of the storage mark and the issuing unit's certificate. When the verification fails, the receiving party automatically sends a SMS verification code to the mobile phone number reserved by the party for a second confirmation, starts an alternative SMS verification code verification process, and saves the anti-tampering operation record.

9. The intelligent verification system for legal documents according to claim 8, wherein The dual identity authentication includes: During the call on the court-specified hotline system, use a voice collection device to collect the voice features of the answering party, and perform high-precision matching with the data pre-stored in the identity database through a voiceprint recognition algorithm. Adopt an asymmetric encryption algorithm, combined with a random number generator, to generate a time-limited encrypted link, which contains a first verification code that can only be used once. The generation of the encrypted link adopts a dual verification method, obtains the user location information by acquiring base station positioning or GPS positioning information, and adds it to the first verification code after performing a hash operation.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program for an intelligent verification method of legal documents. When the program for the intelligent verification method of legal documents is executed by a processor, the steps of an intelligent verification method of legal documents as described in any one of claims 1 to 7 are implemented.

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