Real Estate Lease Management Method, System, Electronic Device and Storage Medium

Abstract

The present invention relates to a method, system, electronic device and storage medium for immovable asset lease management, and pertains to the technical field of computer processing. The method includes the following steps: S01, establishing a network connection among the terminal devices of the lessor, the asset holder and the third-party lawyer; S02, receiving the contract signing information, renewal information or lease detail modification information sent by the terminal device, and verifying the user identity information carried in the information; S03, performing the contract signing, renewal or lease detail modification operation according to the verification result, and interacting with the lease management platform through the network based on obtaining the user identity and lease requirement information; S04, sending the information of contract signing, renewal or lease detail modification to the lease management platform. The invention significantly improves the transparency, security and convenience of lease management by introducing functions such as third-party lawyer authentication, blockchain evidence storage technology, intelligent reminder and AR-assisted renewal.

Description

Technical Field

[0001] The present invention relates to the technical field of computer processing, and particularly to a method, system, electronic device and storage medium for managing immovable asset leasing. Background Art

[0002] Immovable assets include land and its attachments and buildings, and attachments refer to minerals, forests, etc. Leasing refers to purchasing the ownership and right of use of immovable assets within a predetermined period in a leasing manner, such as mineral mining, factory building use, etc.

[0003] Leasing is usually signed in the form of a paper contract, and the lease date also exists in a paper form, through electronic reminder methods such as setting a reminder calendar. After the contract expires, both parties need to have another interview to discuss whether to continue the renewal and the related fees. The relevant procedures and processes are very cumbersome. If it exists in the form of the Internet, both parties can directly sign the contract, renew the contract when it expires, and modify the lease details of the renewal through the APP on the mobile phone or computer client, which can greatly simplify the process in the leasing process. How to solve this problem has become an urgent problem to be solved in the prior art. Summary of the Invention

[0004] In view of the above technical problems, the technical solution adopted by the present invention is a method for managing immovable asset leasing, including the following steps:

[0005] S01. Establish a network connection among the terminal devices of the lessor, the asset holder and the third-party lawyer;

[0006] S02. Receive the contract signing information, renewal information or lease detail modification information sent by the terminal device, and verify the user identity information carried in the information;

[0007] S03. Execute the contract signing, renewal or lease detail modification operation according to the verification result, and interact with the lease management platform through the network based on obtaining the user identity and lease demand information;

[0008] S04. Send the information of contract signing, renewal or lease detail modification to the lease management platform;

[0009] S05. After receiving the lease detail modification information, send a contract amendment certification request to the terminal device of the third-party lawyer, and execute the contract amendment operation after receiving the electronic signature certification of the third-party lawyer.

[0010] An immovable asset leasing management system for implementing the immovable asset leasing management method described in the above solution, including:

[0011] A lease management platform is used to establish a network connection with the terminal devices of lessors, asset holders, and third-party lawyers, receive contract signing information, renewal information, or lease detail modification information sent by the terminal devices, verify the user identity information carried in the information, and then perform contract signing, renewal, or lease detail modification operations according to the verification results;

[0012] Terminal devices are used to obtain user identity and lease requirement information and send information on contract signing, renewal, or lease detail modification to the lease management platform;

[0013] Among them, the lease management platform includes:

[0014] A contract processing module, which, after receiving lease detail modification information, sends a contract revision authentication request to the terminal device of the third-party lawyer, and performs a revision operation after receiving the electronic signature authentication of the third-party lawyer;

[0015] A notification module, which generates at least two reminder messages within a preset time period before the contract expires, including a first reminder and a final deadline reminder before expiration, or / and dynamically adjusts the reminder time interval according to the contract type; and sends the reminder messages to the terminal devices of the lessor and the asset holder;

[0016] A blockchain evidence storage module, which generates a timestamp hash value for the contract revision version authenticated by the third-party lawyer and writes it into the distributed ledger, and both parties to the contract can verify the immutability of the revision record through the terminal device.

[0017] Preferably, the notification module includes: a contract expiration warning sub-module, which is used to send differentiated reminder content after a certain number of days until the contract expires. If the user does not respond, an automatic renewal inquiry signal or a termination confirmation process is triggered on the expiration date.

[0018] Preferably, the contract processing module includes:

[0019] A third-party lawyer authentication sub-module, which is used to perform compliance verification on the contract revision content, generate a revised marked version after verification, then synchronously push the marked version to the terminal device of the third-party lawyer, and finally activate the revision clause after receiving the encrypted digital certificate returned by the terminal device of the third-party lawyer;

[0020] A third-party lawyer management sub-module, which generates a revision rejection report when the terminal device of the third-party lawyer refuses to authenticate. The revision rejection report includes the legal basis clause index and reasons, and synchronously sends the rejection details and modification suggestions to the user through the notification module.

[0021] Preferably, the contract expiration warning sub-module is located on the day before the contract expiration date, generates an authentication window link, and after the authentication window link is executed, it calls the camera to capture the property scene in real time, generates three-dimensional space coordinates based on the SLAM algorithm, and superimposes and displays the rent change ratio and area parameters in the renewal conditions as floating layers. The user confirms to accept the terms through a two-finger pinch gesture, and the gesture data triggers a renewal signal after being recognized by the convolutional neural network, where:

[0022] The execution steps of the SLAM algorithm include:

[0023] S30. Extract ORB feature points frame by frame from the video stream and establish a feature point map;

[0024] S31. Calculate the real-time pose of the terminal device through the PnP algorithm;

[0025] S32. Integrate the data of the inertial measurement unit to optimize the point cloud reconstruction accuracy and output a three-dimensional space coordinate matrix with scale information;

[0026] The execution steps of the floating layer superimposed display include:

[0027] S33. Convert the rent change ratio into a dynamic color-coded bar chart, and the height of the column is proportional to the change range;

[0028] S34. Mark the boundary of the property real scene in the AR interface and dynamically render the difference between the new and old lease areas as a semi-transparent highlighted area;

[0029] S35. Automatically adjust the layer perspective projection matrix according to the movement of the terminal device to keep the visual fit between the image and the physical scene.

[0030] Preferably, the blockchain evidence storage module further includes:

[0031] A hash generation sub-module, which is used to extract the full text data of the revised version of the contract after the electronic signature authentication of the third-party lawyer, and uses algorithm to generate the first hash value H1;

[0032] A certificate binding sub-module, connected to the hash generation sub-module and the third-party lawyer authentication sub-module, is used to obtain the encrypted digital certificate returned by the third-party lawyer terminal, extract the public key identification code P K , splice H1 and P K to generate the second hash value H2;

[0033] The block writing sub-module is connected to the certificate binding sub-module and is used to form a structured deposit evidence data packet with H1, H2 and the contract revision timestamp t, and write the deposit evidence data packet into the distributed ledger of the consortium chain node, where the consortium chain node includes a rental platform server, a third-party lawyer association supervision node and a judicial deposit evidence center node.

[0034] Preferably, the hash generation sub-module includes the following steps:

[0035] S10. Convert the contract revision version into An encoded binary data stream;

[0036] S11. Perform block processing on the data stream, and use every 512 bytes as input to iteratively calculate An intermediate value;

[0037] S12. When the final data block is less than 512 bytes, fill the bit positions 1 and the length identifier to 512 bits;

[0038] S13. Output a 128-bit hexadecimal string as H1.

[0039] Preferably, before the certificate binding sub-module executes, it needs to verify the validity of the third-party lawyer's encrypted digital certificate, and its steps include:

[0040] S20. Verify the legality of the certificate issuing authority through the pre-set third-party lawyer association according to the certificate chain;

[0041] S21. Use the public key in the certificate to decrypt the signature data sent by the third-party lawyer terminal, confirm that it matches the hash value of the contract revision content, and only execute H1 and P after the verification passes K .

[0042] The present invention has at least the following beneficial effects:

[0043] 1. Through the real-time authentication and compliance verification of the third-party lawyer, the legality and accuracy of the contract revision content are ensured, the risk of legal disputes is reduced, and the legal effect and compliance of the contract are enhanced.

[0044] 2. Using blockchain technology to store contract revision records ensures the immutability of data, provides strong legal evidence support for both parties of the contract, and improves the security and credibility of contract management.

[0045] 3. Through the intelligent reminder and AR-assisted renewal function, the rental process is simplified, the user participation and satisfaction are improved, thereby optimizing the rental process and enhancing the user experience.

[0046] 4. Automating operations such as contract signing, renewal, and detail modification reduces manual intervention and improves management efficiency. Description of the Drawings

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0048] Figure 1 It is the flowchart provided for Embodiment 1 of the present invention;

[0049] Figure 2 It is the architecture diagram provided for Embodiment 2 of the present invention;

[0050] Figure 3 It is the composition architecture diagram of the contract processing module provided for Embodiment 2 of the present invention;

[0051] Figure 4 It is the composition architecture diagram of the blockchain evidence storage module provided for Embodiment 2 of the present invention. Detailed Embodiments

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above accompanying drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or server that includes a series of steps or units does not necessarily need to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0054] Embodiment 1:

[0055] This embodiment provides a method for immovable asset lease management, combined with Figure 1 as shown, including the following steps:

[0056] The terminal devices of the lessor, asset holder, and third-party lawyer establish a network connection with the S01.

[0057] Specifically, the terminal device establishes an encrypted communication channel with the lease management platform through the TLS1.3 protocol and uses pre-set CA certificates for two-way authentication (the lessor, asset holder, and lawyer terminals hold certificates with different permissions). The network connection adopts a dynamic session key exchange mechanism, and the session key is updated every 10 minutes to prevent man-in-the-middle attacks.

[0058] The lessor's terminal needs to upload scanned copies of identity documents and live detection videos. Key information (such as name and ID number) is extracted through OCR+NLP technology and compared with the ID card database. The asset holder needs to provide an electronic version of the real estate property certificate, and the platform calls the blockchain property registration system to verify its authenticity. The lawyer's terminal needs to upload a practicing certificate and a law firm authorization letter, and the platform verifies the validity of the qualifications through a public database.

[0059] S02: Receive the contract signing information, renewal information, or lease detail modification information sent by the terminal device, and verify the user identity information carried in the information.

[0060] Specifically, the received contract signing / modification information is forcibly converted into the JSON-LD format, and the defined fields include rental_period (lease term), payment_terms (payment terms), and liability_clauses (liability clauses). For unstructured text (such as handwritten remarks), the BERT model is used for intention recognition and automatically mapped to the fields of the preset contract template. The lessor captures the face features in real time through the terminal camera and performs a 1:N comparison with the archived photo in the ID card database (the threshold is set to a similarity ≥98%); the user operation habits (such as mouse movement trajectory and touch screen pressure value) are recorded, and the LSTM model is used to detect abnormal behaviors (such as script automation attacks).

[0061] S03: Execute the contract signing, renewal, or lease detail modification operation according to the verification result, and interact with the lease management platform through the network based on the obtained user identity and lease requirement information;

[0062] Specifically, after the verification passes, call the preset HyperledgerFabric smart contract and execute according to the operation type (signing / renewal / modification): generate a time-stamped contract PDF and automatically assign a unique contract number (such as LEASE_2023_BJ_0157); retrieve the historical version of the original contract, compare whether the rent growth rate complies with local regulations (call the public API for verification), perform a version difference (DiffMatchPatch algorithm) on the modified terms, and generate a revised marked red-blue version comparison document.

[0063] S04. Send information on contract signing, renewal, or modification of lease details to the lease management platform;

[0064] Specifically, the contract information is fragmented into 1MB pieces. Each piece is encrypted using AES - GCM and appended with an HMAC checksum, and is transmitted through multiple paths (such as using 5G and Wi - Fi channels simultaneously). The receiving end verifies the data integrity through the IPFS hash tree, and missing fragments trigger automatic retransmission. Also, the contract signals are classified according to the urgency level (such as renewal request - detail modification - new signing). The platform uses the Weighted Fair Queuing (WFQ) scheduling algorithm to ensure that the delay of high - priority tasks is less than 200ms.

[0065] S05. After receiving the lease detail modification information, send a contract revision authentication request to the terminal device of the third - party lawyer, and perform the contract revision operation after receiving the electronic signature authentication of the third - party lawyer.

[0066] Specifically, the contract revision content is input into the legal knowledge graph (including contract codes, local lease regulations, etc.). The Graph Neural Network (GNN) is used to detect clause conflicts (such as the deposit clause exceeding the legal upper limit). The detection result generates a revision suggestion report (including legal article citations) and is pushed to the lawyer's terminal. The lawyer's electronic signature is generated using the national cryptography SM2 algorithm. The signature data is bound to the contract revision hash value and written into the judicial alliance chain. Triggering a smart contract on the deposit chain automatically sends lease filing information (such as rent amount, taxpayer identification numbers of both parties) to the tax department node.

[0067] Embodiment Two:

[0068] This embodiment aims to implement the system of the method described in Embodiment One, combined with Figures 2 - 4 As shown, it includes:

[0069] A lease management platform, which is used to establish a network connection with the terminal devices of the lessor, asset holder, and third - party lawyer, receive the contract signing information, renewal information, or lease detail modification information sent by the terminal devices, verify the user identity information carried in the information, and then perform the contract signing, renewal, or lease detail modification operation according to the verification result;

[0070] Terminal devices, which are used to obtain user identity and lease demand information, and send contract signing, renewal, or lease detail modification information to the lease management platform;

[0071] Among them, the lease management platform includes:

[0072] A contract processing module, which, after receiving the lease detail modification information, sends a contract revision authentication request to the terminal device of the third - party lawyer, and performs the revision operation after receiving the electronic signature authentication of the third - party lawyer;

[0073] A notification module that generates at least two reminder messages within a preset time period before the contract expires, including the first reminder and the last deadline reminder before expiration, or / and dynamically adjusts the reminder time interval according to the contract type; and sends the reminder messages to the terminal devices of the lessee and the asset holder.

[0074] A blockchain evidence storage module that generates a timestamp hash value for the contract revised version authenticated by a third-party lawyer and writes it into the distributed ledger, and both parties to the contract can verify the immutability of the revision record through the terminal device.

[0075] Specifically, at least two reminder messages are generated within a preset time period before the contract expires, including the first reminder and the last deadline reminder before expiration, or / and the reminder time interval is dynamically adjusted according to the contract type, so as to notify the two parties to the lease in advance of the contract expiration and avoid legal disputes caused by the expiration of the contract. Dynamically adjusting the reminder time interval makes the reminder more user-friendly and improves the user response rate.

[0076] Furthermore, the notification module in the above embodiment includes a contract expiration warning sub-module, which is used to send differentiated reminder content in stages 30 days, 15 days, and 3 days before the contract expires. If the user does not respond, an automatic renewal inquiry signal or a termination confirmation process is triggered on the expiration date.

[0077] Specifically, differentiated reminder content is sent at a certain number of days before the contract expires (i.e., in stages 30 days, 15 days, and 3 days before the contract expires). If the user does not respond to the reminder, an automatic renewal inquiry signal or a termination confirmation process is triggered on the expiration date. The phased reminder enhances the user's sense of urgency and prompts the two parties to the lease to take timely actions. The automatic renewal inquiry / termination confirmation process simplifies the user's operation process and improves the management efficiency.

[0078] Secondly, in the above embodiment, in combination with Figure 3 As shown, the contract processing module includes:

[0079] A third-party lawyer authentication sub-module that is used to perform compliance verification on the contract revision content, generates a revised marked version after verification, then synchronously pushes the marked version to the terminal device of the third-party lawyer, and finally activates the revised terms after receiving the encrypted digital certificate returned by the terminal device of the third-party lawyer.

[0080] A third-party lawyer management sub-module that generates a revision rejection report when the terminal device of the third-party lawyer refuses to authenticate. The revision rejection report includes the legal basis clause index and reasons, and synchronously sends the rejection details and modification suggestions to the user through the notification module.

[0081] Specifically, perform compliance verification on the contract amendment content, generate a revised marked version, and push it to the terminal device of the third-party lawyer. When the third-party lawyer refuses to authenticate, generate a revision rejection report, and send the rejection details and modification suggestions. This ensures the legality and accuracy of the contract amendment content, reduces the risk of legal disputes, provides a detailed rejection report and modification suggestions, and helps users quickly understand the problems and make adjustments.

[0082] Furthermore, the contract expiration warning sub-module in the above embodiment will be located one day before the contract expiration date, generate an authentication window link, and after the authentication window link is executed, call the camera to capture the property scene in real time, generate three-dimensional space coordinates based on the SLAM algorithm, and overlay and display the rent change ratio and area parameters in the renewal conditions as floating layers. The user confirms to accept the terms through a two-finger pinch gesture, and after the gesture data is recognized by the convolutional neural network, a renewal signal is triggered, where:

[0083] The execution steps of the SLAM algorithm include:

[0084] S30. Extract ORB feature points frame by frame from the video stream and establish a feature point map;

[0085] S31. Calculate the real-time pose of the terminal device through the PnP algorithm;

[0086] S32. Integrate the inertial measurement unit data to optimize the point cloud reconstruction accuracy and output a three-dimensional space coordinate matrix with scale information;

[0087] The execution steps of the floating layer overlay display include:

[0088] S33. Convert the rent change ratio into a dynamic color-coded bar chart, and the height of the column is proportional to the change amplitude;

[0089] S34. Mark the boundary of the property real scene in the AR interface, and dynamically render the difference between the new and old lease areas as a semi-transparent highlighted area;

[0090] S35. Automatically adjust the layer perspective projection matrix according to the movement of the terminal device to maintain the visual fit between the image and the physical scene.

[0091] Gesture recognition includes:

[0092] S40. Capture the three-dimensional coordinates of the hand bone joint points through a high-definition camera;

[0093] S41. Calculate the Euclidean distance Dt between the fingertips of the thumb and the index finger. When Dt is less than the set threshold for 5 consecutive frames, it is determined as a valid pinch gesture;

[0094] S42. Collect the RGB-D image sequence of the gesture area ROI as the input data of the CNN.

[0095] The above convolutional neural network is trained in the following manner:

[0096] S50. Construct an enhanced dataset containing pinching gestures under multiple lighting conditions, and the data annotation includes gesture type and fingertip distance labels;

[0097] S51. Use the backbone network to extract spatio-temporal features, and connect the LSTM layer to capture the dynamic sequence of gestures;

[0098] S52. The output layer uses the Sigmoid function to calculate the confidence score of the pinching action, and the training loss function is FocalLoss.

[0099] Specifically, authentication window link: Generate an authentication window link on the day before the contract expiration warning sub-module is executed.

[0100] SLAM algorithm: Used to generate three-dimensional space coordinates, and superimpose the renewal conditions as a floating layer.

[0101] Two-finger pinching gesture confirmation: The user confirms to accept the terms through the two-finger pinching gesture, and the gesture data triggers a renewal signal after being recognized by the convolutional neural network.

[0102] The above provides an intuitive and convenient renewal method, improves user participation and satisfaction, and uses the SLAM algorithm and AR technology to achieve real-time interaction between the renewal conditions and the property management scenario, enhancing the user experience.

[0103] Furthermore, in the above embodiment, in combination with Figure 4 as shown, the blockchain evidence storage module further includes:

[0104] A hash generation sub-module, used to extract the full text data of the contract revision version after the electronic signature authentication of the third-party lawyer, and use the algorithm to generate the first hash value H1;

[0105] A certificate binding sub-module, connected to the hash generation sub-module and the third-party lawyer authentication sub-module, used to obtain the encrypted digital certificate returned by the third-party lawyer terminal, and extract the public key identification code P K of the certificate, and splice H1 and P K to generate the second hash value H2;

[0106] A block writing sub-module, connected to the certificate binding sub-module, used to form a structured evidence storage data packet with H1, H2 and the contract revision timestamp t, and write the evidence storage data packet into the distributed ledger of the consortium chain node, where the consortium chain node includes a rental platform server, a third-party lawyer association supervision node and a judicial evidence storage center node.

[0107] Further, the hash generation sub-module includes the following steps:

[0108] S10. Convert the contract revised version into an encoded binary data stream;

[0109] S11. Perform block processing on the data stream, and iteratively calculate the intermediate value with every 512 bytes as the input;

[0110] S12. When the final data block is less than 512 bytes, fill in bit 1 and the length identifier to 512 bits;

[0111] S13. Output a 128-bit hexadecimal string as H1.

[0112] Secondly, before the certificate binding sub-module executes, it is necessary to verify the validity of the encrypted digital certificate of the third-party lawyer. The steps include:

[0113] S20. Verify the legality of the certificate issuing authority through the pre-set third-party lawyer association according to the certificate chain;

[0114] S21. Use the public key in the certificate to decrypt the signature data sent by the third-party lawyer terminal, confirm that it matches the hash value of the contract revised content, and only execute H1 and P after the verification passes K .

[0115] It should be noted that the process of the block writing unit calling the smart contract includes:

[0116] Encapsulate the evidence storage data packet in the standard format;

[0117] Attach the NTP server synchronization proof of the timestamp t when initiating a transaction request to the alliance chain;

[0118] When more than 50% of the accounting nodes verify that the evidence storage data packet format is compliant, write the data packet into a new block and broadcast it to the whole chain.

[0119] Specifically, the hash generation sub-module: adopts The algorithm generates the first hash value H1 of the contract revised version. The certificate binding sub-module: splices H1 with the public key identification code Pk of the third-party lawyer to generate the second hash value H2. The block writing sub-module: forms a structured evidence storage data packet with H1, H2 and the contract revision timestamp t, and writes it into the distributed ledger of the consortium blockchain node. It ensures the immutability of the contract revision record, provides strong legal evidence support for both parties of the contract, and improves the security and credibility of the data through the distributed storage of the consortium blockchain node. It ensures the accuracy and uniqueness of the hash value, providing a reliable basis for the evidence storage of the contract revision record. It ensures the validity of the encrypted digital certificate of the third-party lawyer, improving the legality and credibility of the contract revision record.

[0120] In summary, through the real-time authentication and compliance verification of the third-party lawyer in this embodiment, it ensures the legality and accuracy of the contract revision content, reduces the risk of legal disputes, and enhances the legal effect and compliance of the contract. Using blockchain technology to store the contract revision record ensures the immutability of the data, provides strong legal evidence support for both parties of the contract, and improves the security and credibility of contract management. Then, through the intelligent reminder and AR-assisted renewal function, it simplifies the leasing process, improves the user participation and satisfaction, thus optimizing the leasing process and enhancing the user experience. And it automates the operations such as contract signing, renewal and detail modification, reducing manual intervention and improving management efficiency.

[0121] Embodiment 3:

[0122] The embodiment of the present invention provides a non-transitory computer-readable storage medium, in which at least one instruction or at least one program segment is stored, and at least one instruction or at least one program segment is loaded and executed by a processor to implement the steps:

[0123] The terminal devices of the lessor, the asset holder and the third-party lawyer establish a network connection;

[0124] Receive the contract signing information, renewal information or lease detail modification information sent by the terminal device, and verify the user identity information carried in the information;

[0125] Execute the contract signing, renewal or lease detail modification operation according to the verification result, and interact with the lease management platform through the network based on obtaining the user identity and lease demand information;

[0126] Send the information of contract signing, renewal or lease detail modification to the lease management platform;

[0127] After receiving the lease detail modification information, send a contract revision authentication request to the terminal device of the third-party lawyer, and execute the contract revision operation after receiving the electronic signature authentication of the third-party lawyer.

[0128] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0129] Those skilled in the art can clearly understand that for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is used as an example. In practical applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above.

[0130] Embodiment 4:

[0131] The embodiment of the present invention provides an electronic device, including a processor and a memory. At least one instruction or at least one program segment is stored in the memory. The at least one instruction or the at least one program segment is loaded and executed by the processor to implement the steps:

[0132] Establish a network connection among the terminal devices of the lessor, the asset holder and the third-party lawyer;

[0133] Receive the contract signing information, renewal information or lease detail modification information sent by the terminal device, and verify the user identity information carried in the information;

[0134] Execute the contract signing, renewal or lease detail modification operation according to the verification result, and interact with the lease management platform through the network based on obtaining the user identity and lease requirement information;

[0135] Send information on contract signing, renewal, or modification of lease details to the lease management platform;

[0136] After receiving the lease detail modification information, send a contract amendment certification request to the terminal device of the third-party lawyer, and execute the contract amendment operation after receiving the electronic signature certification of the third-party lawyer.

[0137] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A fixed asset lease management system, characterized in that, Including: A lease management platform, which is used to establish a network connection with the terminal devices of lessors, asset holders and third-party lawyers, receive contract signing information, renewal information or lease detail modification information sent by the terminal devices, verify the user identity information carried in the information, and then execute contract signing, renewal or lease detail modification operations according to the verification results; Terminal devices, which are used to obtain user identity and lease demand information, and send contract signing, renewal or lease detail modification information to the lease management platform; Among them, the lease management platform includes: A contract processing module, which sends a contract revision authentication request to the terminal device of the third-party lawyer after receiving lease detail modification information, and executes the revision operation after receiving the electronic signature authentication of the third-party lawyer; A notification module, which generates at least two reminder messages within a preset time period before the contract expires, including the first reminder and the last deadline reminder before expiration, or / and dynamically adjusts the reminder time interval according to the contract type; sends the reminder messages to the terminal devices of the lessor and the asset holder; A blockchain evidence storage module, which generates a timestamp hash value for the contract revision version authenticated by the third-party lawyer and writes it into the distributed ledger, and both parties to the contract can verify the immutability of the revision record through the terminal device; The notification module includes A contract expiration warning sub-module, which is used to send differentiated reminder content a certain number of days after the contract expires. If the user does not respond, an automatic renewal inquiry signal or a termination confirmation process will be triggered on the expiration date; The contract expiration warning sub-module will generate an authentication window link on the day before the contract expiration date, and after the authentication window link is executed, it will call the camera to capture the property scene in real time, generate three-dimensional space coordinates based on the SLAM algorithm, and overlay and display the rent change ratio and area parameters in the renewal conditions as floating layers. The user confirms to accept the terms through a two-finger pinch gesture, and the gesture data is recognized by the convolutional neural network to trigger a renewal signal, where: The execution steps of the SLAM algorithm include: S30. Extract ORB feature points frame by frame from the video stream to establish a feature point map; S31. Calculate the real-time pose of the terminal device through the PnP algorithm; S32. Integrate the data of the inertial measurement unit to optimize the point cloud reconstruction accuracy, and output a three-dimensional space coordinate matrix with scale information; The execution steps of the floating layer overlay display include: S33. Convert the rent change ratio into a dynamic color-coded bar chart, and the height of the bar is proportional to the change amplitude; S34. Mark the boundary of the property real scene in the AR interface, and dynamically render the difference between the old and new lease areas as a semi-transparent highlighted area; S35. Automatically adjust the perspective projection matrix of the layer according to the movement of the terminal device to keep the visual fit between the image and the physical scene.

2. The immovable property lease management system according to claim 1, characterized in that The contract processing module includes: A third-party lawyer certification sub-module, which is used to perform compliance verification on the contract amendment content, generate a marked version after verification, then synchronously push the marked version to the terminal device of the third-party lawyer, and finally activate the amendment clause after receiving the encrypted digital certificate returned by the terminal device of the third-party lawyer; A third-party lawyer management sub-module, which generates a revision rejection report when the terminal device of the third-party lawyer refuses to authenticate. The revision rejection report includes the legal basis clause index and reasons, and synchronously sends the rejection details and modification suggestions to the user through the notification module.

3. The immovable property lease management system according to claim 2, characterized in that, The blockchain evidence storage module further includes: A hash generation sub-module, which is used to extract the full text data of the contract revised version after the electronic signature authentication of a third-party lawyer, and generates a first hash value H1 by using algorithm; The certificate binding sub-module, connected to the hash generation sub-module and the third-party lawyer authentication sub-module, is used to obtain the encrypted digital certificate returned by the third-party lawyer terminal and extract the public key identification code P in the certificate K , and splice H1 and P K to generate the second hash value H2 A block writing sub-module, connected to the certificate binding sub-module, which is used to form a structured evidence storage data packet by combining H1, H2 and the contract amendment timestamp t, and write the evidence storage data packet into the distributed ledger of the consortium chain node, where the consortium chain node includes a rental platform server, a third-party lawyer association supervision node and a judicial evidence storage center node.

4. The immovable property lease management system according to claim 3, characterized in that, The hash generation sub-module includes the following steps: S10. Convert the contract revised version into encoded binary data stream; S11. Perform block processing on the data stream, and use every 512 bytes as input for iterative calculation of intermediate values; S12. When the final data block is less than 512 bytes, fill the bit positions 1 and the length identifier to 512 bits; S13. Output a 128-bit hexadecimal string as H1.

5. The immovable property lease management system according to claim 3, characterized in that, Before the certificate binding sub-module executes, it needs to verify the validity of the third-party lawyer's encrypted digital certificate. The steps include: S20. Verify the legitimacy of the certificate issuing authority through the pre-set third-party lawyer association according to the certificate chain; S21. Decrypt the signature data sent by the third-party lawyer terminal using the public key in the certificate, confirm that it matches the hash value of the contract amendment content, and only execute H1 and P after the verification passes K .

6. A real estate lease management method, applied to the real estate lease management system according to any one of claims 1-5, characterized in that, Include the following steps: S01. The terminal devices of the lessor, the asset holder and the third-party lawyer establish a network connection; S02. Receive the contract signing information, renewal information or lease detail modification information sent by the terminal device, and verify the user identity information carried in the information; S03. Perform the contract signing, renewal or lease detail modification operation according to the verification result; S04. Based on obtaining the user identity and lease requirement information, the terminal device interacts with the lease management platform through the network and sends the contract signing, renewal or lease detail modification information to the lease management platform; S05. After receiving the lease detail modification information, the lease management platform sends a contract amendment authentication request to the terminal device of the third-party lawyer, and executes the contract amendment operation after receiving the electronic signature authentication of the third-party lawyer.

7. An electronic device, characterized in that, It includes a processor and a memory. At least one instruction or at least one program segment is stored in the memory. The at least one instruction or the at least one program segment is loaded and executed by the processor to implement the steps of the immovable asset lease management method as described in claim 6.

8. A storage medium, wherein at least one instruction or at least one program segment is stored in the storage medium, characterized in that The at least one instruction or the at least one program segment is loaded and executed by the processor to implement the steps of the immovable asset lease management method as described in claim 6.

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