240 results about "Evidence collection" patented technology

The invention provides a multi-agent cooperative processing system and method for multi-scene legal complaint consultation, and relates to the technical field of artificial intelligence, and the method comprises the steps: receiving a legal or complaint consultation text inputted by a user, and generating structured consultation request data; automatically generating an evidence obtaining template, and forming a standardized evidence obtaining data packet; constructing a demonstration tree and outputting a multi-scheme decision matrix; performing multi-objective optimization by combining the success rate, the timeliness, the cost and the regional qualification index, and outputting a comprehensive recommendation result; generating a knowledge unit set, and updating a regulation index and agent prompt template library; predicting a re-complaint risk and generating a remedy and optimization suggestion; and outputting review result data, and reversely updating the review result data to the agent configuration strategy in the step of the knowledge construction module. According to the method and the device, the technical targets of multi-agent cooperative processing and dynamic optimization management in the whole legal complaint consultation process can be realized, and the technical effects of improving consultation processing efficiency, enhancing scheme recommendation accuracy, reducing manual participation cost and ensuring data compliance and risk controllability are achieved.

The invention provides an accident liability intelligent determination method and system fused with video tracking, and the method comprises the steps: S1, carrying out the alignment evidence collection of a video, an IMU, a GPS, and an OBD, and forming an evidence chain through framing Hash, chain Hash, and a timestamp; s2, completing detection segmentation on the shared trunk multi-branch network; s3, in combination with appearance re-identification and a motion model, realizing cross-frame association, and outputting track, speed and shielding recovery; s4, mapping the trajectory to BEV according to depth and calibration, and constructing a space-time scene graph by fusing lanes, signals, speed limit and the like; s5, extracting events such as lane changing, line merging and signal rushing, and positioning a conflict point and a way giving relation; s6, generating error factors according to a rule base and priority judgment; s7, quantifying the responsibility proportion according to the weight, the collision participation time and the reaction time; and S8, generating a report evidence of the key frame and the rule list. The system is composed of an acquisition evidence obtaining module, a video understanding tracking module, a space-time reconstruction module, an event extraction module, a rule reasoning module, a responsibility quantification module and a report evidence storage module.

The invention discloses a building construction quality on-line monitoring system based on digital twinning, particularly relates to the field of building engineering informatization, is used for solving the problem of quality judgment deviation caused by dislocation breakpoints of multi-source evidences on a construction site, and is characterized in that a process event label is triggered through an event anchoring module to limit a window boundary and record an event identifier; the object binding module is used for immediately binding and generating object event table alignment records according to a component identity list and a positioning line, and the sequential judgment module is used for extracting a video key point frame and a sensing track, calculating an action synchronization difference and a form coincidence difference, constructing a deviation sequence and inputting the deviation sequence into a single-side CUSUM to obtain a judgment signal and fragment positioning; the judgment issuing module reads a signal calling rule base to generate quality judgment disposal guidance and recheck script issuing execution, and the recheck write-back module receives result write-back, lightly updates a fragment boundary and responds to a neighborhood record version to realize compact transmission from evidence obtaining to judgment execution to write-back so as to form a stable and traceable quality closed loop.

The invention discloses a deep counterfeit face image source tracing evidence obtaining method and system based on a diffusion model, and relates to the technical field of deep counterfeit face image evidence obtaining. The method comprises the following steps: constructing a robust watermark framework based on a diffusion model, wherein the framework comprises a diffusion model encoder, a watermark decoder and a freeze parameter auto-encoder; in a training stage, a face image and a watermark are constructed as conditions, a diffusion model encoder is guided to denoise, and a corresponding watermark image is predicted; the trained robust watermark framework based on the diffusion model is used for testing, a specific depth forging model is added in the sampling stage for guiding, and a more robust watermark image is generated through iterative denoising; in the evidence obtaining stage, the watermark in the forged image to be subjected to evidence obtaining is obtained through the watermark decoder. The method can effectively cope with different counterfeiting technologies, provides a more robust and reliable deep counterfeiting traceability evidence obtaining scheme, and has strong adaptability and wide application prospects.

The invention relates to the technical field of smart home and mobile terminals, and discloses a smart home anti-theft system based on a smart mobile terminal, which comprises a dynamic behavior learning module, a multi-modal sensor collaborative network, a dual-channel verification unit and a cross-platform emergency linkage engine. According to the smart home anti-theft system based on the smart mobile terminal, a false alarm scene is effectively eliminated and the false alarm rate is reduced through a multi-modal sensor collaborative network and a dual-channel verification unit, and a personalized security policy is dynamically generated by adopting a mixed learning algorithm and an edge-cloud collaborative computing architecture, so that the privacy data of a user is protected; through the cross-platform emergency linkage engine, hierarchical alarm and multi-dimensional response are supported, the intrusion event processing efficiency is improved, it is ensured that an evidence chain cannot be tampered, judicial evidence obtaining standards are met, and the problem that evidence of a traditional system is prone to being lost or tampered is solved.

The invention discloses an intelligent analysis-based security vulnerability intelligent research and judgment and co-processing system and method, and relates to the technical field of network security, and the system comprises a multi-source data collection module which obtains security data in real time by adopting a multi-level intelligent hierarchical collection architecture; the intelligent analysis module adopts a three-level progressive analysis architecture to analyze and collect data; the intelligent agent scheduling module designs a unified control framework, realizes standardized management and control of security equipment through hierarchical abstraction, receives analysis results, integrates a self-adaptive scheduling algorithm based on multi-objective optimization and an alarm vulnerability intelligent circulation strategy relying on an optimization mechanism of the self-adaptive scheduling algorithm, and executes a security mechanism by means of an adapter factory mode, a strategy arrangement engine and a four-level execution guarantee mechanism. Equipment self-adaptive management, strategy intelligent scheduling and vulnerability grading processing are supported, and a processing result is fed back; and the report generation and evidence collection module displays the disposal result and automatically generates an electronic evidence collection package meeting the standard. According to the invention, intelligent research and judgment of vulnerabilities and automatic generation of disposal suggestions can be realized.

The invention relates to the technical field of VR panoramic road safety illegal behavior snapshot scheme design, in particular to a VR panoramic road safety illegal behavior snapshot method and system. The method comprises the following steps: acquiring an intersection panoramic video stream through a single panoramic device; illegal evidence obtaining is triggered based on space overlapping of the vehicle track and the electronic fence; synchronously judging a red light running behavior by combining a signal lamp state; identifying retrograde motion by comparing the motion vector with the lane direction vector; all-weather overspeed monitoring is realized by using a millimeter wave radar; and generating an evidence packet containing the two-dimensional panorama and the three-dimensional reconstruction model. The system is composed of a panoramic acquisition module, an electronic fence module, a behavior analysis module, an illegal evidence obtaining module and a data communication module. The method has the core advantages that all-intersection coverage is achieved through single equipment, the illegal recognition accuracy is improved through multi-source data fusion, the evidence effectiveness is enhanced through the three-dimensional reconstruction technology, and the law enforcement cost and the dispute risk are remarkably reduced.

The invention relates to the technical field of artificial intelligence monitoring, in particular to a bid evaluation site multi-modal behavior compliance monitoring method and system, and the method comprises the following steps: deploying an array microphone and a high-definition camera in a bid evaluation room, and synchronously collecting the sound and image data of bid evaluation experts and workers; meanwhile, personnel position information is collected in real time through a Bluetooth low-power-consumption or ultra-wideband tag; the bid evaluation method has the beneficial effects that sensitive languages, private communication, file or storage medium transmission, illegal use of electronic equipment, unauthorized leaving and other behaviors of judges and workers are recognized in real time in the bid evaluation process, and risk early warning or forced intervention is generated in real time, so that hidden dangers of camera obscura operation and serial fraud are eliminated. Meanwhile, the invention also aims to automatically store traceable audio and video evidence and behavior logs and provide reliable support for subsequent auditing and law enforcement evidence collection, so that the openness, justice and compliance levels of bid evaluation activities are comprehensively improved.

The invention discloses a natural resource big data off-line comprehensive analysis, annotation and proof system and method, and belongs to the technical field of natural resource informatization and geographic information processing. The system comprises the following components: a spatial data fusion module, which is used for realizing unified management and efficient processing of heterogeneous spatial data; the spatial index optimization module is used for realizing quick retrieval and high-performance query optimization of spatial data; the intelligent annotation and arrangement module is used for realizing low-code rapid configuration and business process automatic arrangement of different natural resource investigation scenes; the off-line analysis module is used for realizing buffer area analysis, space superposition and terrain analysis in an off-line environment; the real-time visualization module is used for realizing multi-level map display, track recording, vector element editing and multimedia evidence collection; and the data quality management module is used for realizing automatic quality inspection of geometry, topology and attributes and statistical analysis, version control and export management of annotation results.

The invention discloses an automatic collection and intelligent analysis platform for law enforcement evidence, and the platform comprises a data integration module which supports a plurality of data sources, integrates the data of different sources into the platform, and is internally provided with an intelligent data analysis engine for cleaning, converting and preprocessing the data; the real-time analysis module has a real-time data processing pipeline and a flow calculation technology, can access dynamic data in real time, gives an alarm according to a self-defined key index and a threshold value, and displays the latest data change through a real-time data analysis instrument panel; the method has the advantages that multi-source data access is supported, by means of an intelligent analysis engine, the data management process is simplified, comprehensive data is rapidly gathered, a data foundation is built for law enforcement analysis, and the data collection and arrangement time is greatly shortened; dynamic data are docked in real time by means of a real-time data processing pipeline and flow computing technology; and an index threshold value is customized, an alarm is given immediately when an emergency comes, law enforcement officers can respond at the first time, and the social order is efficiently maintained.

The invention provides an electricity larceny behavior monitoring and evidence obtaining system based on an intelligent fusion terminal, and relates to the technical field of power distribution networks, and the system comprises an electricity utilization information collection master station system, the intelligent fusion terminal, an electricity larceny prevention online monitoring device, and a loop state monitoring unit. The loop state monitoring unit is used for monitoring the state of the metering loop to obtain real-time monitoring electric energy parameters of the metering loop; the intelligent fusion terminal performs analysis according to the real-time monitored electric energy parameters to obtain a current abnormal data record; the electricity consumption information acquisition master station system performs electricity stealing suspicion judgment according to the current abnormal data record and the remote meter reading data of the intelligent fusion terminal; and the power utilization information acquisition master station system is in communication connection with the electricity larceny prevention online monitoring device so as to control the electricity larceny prevention online monitoring device to perform image acquisition when it is judged that the intelligent fusion terminal has an electricity larceny suspicion currently, and a first monitoring image of a scene where the intelligent fusion terminal is located is obtained so as to perform electricity larceny behavior evidence obtaining.

The invention relates to the technical field of unmanned aerial vehicle control, in particular to a wide-area reconnaissance and hovering fine investigation cooperation method and system for putting multiple rotors into a fixed wing, and provides the following scheme: a mother aircraft executes a wide-area reconnaissance task, generates a fine investigation task based on a wide-area clue, and encodes the fine investigation task into a plurality of task seeds; the task seeds comprise task skeleton information and rule information; task seeds are mapped into a complementary evidence collection combination through a complementary codebook, and wingman distribution is formed by combining wingman capabilities; and the wing aircrafts complete task pre-compilation before delivery, and expand and execute hovering fine check based on rules after delivery. According to the method, complementary collection of the accurate verification evidence can be realized under the condition that the multiple wing aircrafts are parallel, redundancy is reduced, and the resource utilization efficiency and the task execution reliability are improved.

The invention relates to an address processing method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the steps of obtaining a positioning address corresponding to a positioning coordinate; if the first text similarity value of the positioning address and the order address is smaller than a similarity threshold value, searching a plurality of candidate positions, wherein the distances between the candidate positions and the positioning coordinates are smaller than a first distance threshold value; obtaining a candidate address corresponding to each candidate position; according to the second text similarity value of each candidate address and the order address, determining a plurality of recommendation addresses in each candidate address, and displaying each recommendation address; and in response to the selection operation, determining a target address in each recommended address. By adopting the method, the auditing difficulty of authenticity verification through field evidence collection can be reduced, and the labor cost is saved.

The invention discloses a key management method, an electronic device, a storage medium and a program product, and relates to the technical field of data storage security and key management. According to the application, when a data leakage event exists, a key version, an operation main body and a timeline corresponding to leaked data can be quickly positioned according to blockchain evidence storage data, so that the data leakage is avoided; the evidence obtaining time is greatly shortened, and the processing efficiency of data leakage events is improved; authority verification is achieved through the predefined strategy table, the efficiency of dynamic verification of the multi-tenant authority is improved, and the risk of authority retention is reduced; the integrity and authenticity of a key operation record are guaranteed by utilizing the non-tampering characteristic of the block chain, and illegal access of a tenant to key data is avoided through an independent block chain storage area and authority control; by associating the key version, the I / O operation and the tenant information, the responsibility subject can be determined when an abnormal condition occurs, and the problem that the responsibility definition of the log system is fuzzy is solved.

The invention provides a digital copyright protection method and system based on an exchange password watermark and a block chain. The method comprises the following steps: firstly, enabling data to complete digital watermark embedding and extraction in a ciphertext state by utilizing the exchangeability of an exchange password watermark technology so as to avoid data leakage, and then utilizing a Merkle Tree structure to link and store data and watermark (fingerprint) operation domain information so as to complete data integrity verification and distribution traceability; data forgery is prevented, and the block chain storage overhead is reduced; in the traceability process, an interactive credible traceability algorithm is utilized to complete traceability of illegal distributors, the algorithm reduces a dispute range of a traceability calculation result under a chain through a watermark challenge-response protocol, and a block chain recalculates and verifies a result of the dispute range to realize credible traceability. The block chain records the data distribution information and the verification process in the whole process, it is guaranteed that the traceability evidence obtaining process is open and transparent, and traceability of users who illegally distribute and illegally use data is achieved on the premise that the data security is protected.

The invention provides an intelligent law enforcement evidence obtaining method and system based on comprehensive information integration, and relates to the technical field of data processing, and the method comprises the steps: synchronously obtaining the original data of a photoelectric evidence obtaining device, a navigation radar, a ship automatic recognition system and a unification device through a multi-source data collection interface, and protocol analysis and standardization processing are carried out to form a unified structured data stream. Space-time fusion of the radar track and the AIS information is realized based on the data stream, a fusion target object is generated, and a dynamic situation target set is constructed; utilizing the abnormal behavior model to automatically identify suspicious behaviors and outputting an alarm; identifying a target type and a board number in combination with the photoelectric video stream, and updating or newly adding a ship file; meanwhile, a photoelectric guiding instruction is generated through azimuth calculation, and automatic target tracking and video collection are achieved; and finally, performing time correlation and integration on the multi-source data, generating a law enforcement evidence chain and automatically outputting an evidence obtaining report. The efficiency of the law enforcement evidence obtaining process can be improved.

The invention discloses a judicial evidence storage protection method and system for preventing data tampering of Root / jailbreak equipment, and relates to the field of judicial evidence storage safety of mobile terminals. A trusted root is constructed based on a built-in TEE of a mobile terminal, the trusted state of the equipment is verified, then a trusted timestamp is generated through multi-source heterogeneous time synchronization, position verification is completed by combining GPS, Wi-Fi and base station data, camera drive and sensor parameters are verified to guarantee credibility of an acquisition source, and finally evidence storage data is signed by the TEE and then uploaded to a judicial block chain alliance chain. Through hardware-level protection and multi-dimensional verification, source-level tampering is thoroughly blocked, evidence is ensured to be true and legal, the evidence can be reproduced on mobile terminals such as mobile phones and tablet computers supporting TEE, and the method is suitable for various judicial evidence obtaining scenes.

The invention relates to the technical field of natural language processing and artificial intelligence, in particular to an open domain question and answer task processing method and a comprehensive processing framework system. A complete, reliable and explainable reasoning chain from an original question to an explicit reasoning basis and then to a final answer is constructed. According to the framework, the accuracy and robustness of a question answering system are remarkably improved, and the illusion problem of a large language model in an open domain scene is effectively relieved. According to the method, through three innovation mechanisms of question enhancement, collaborative evidence collection and multi-stage abstract integration, substantial technical progress is made in the aspects of accuracy, robustness, interpretability, information integration capability and the like, and an effective solution is provided for constructing a high-reliability large language model open domain question-answering system.

The invention belongs to the technical field of fire investigation, and particularly discloses a smoked airflow direction judgment method and system based on a camera and a program product, which are low in equipment threshold and low in cost, can complete field smoked airflow direction judgment without depending on expensive equipment and instruments, and can reduce the misjudgment rate and improve the detection efficiency compared with a pure experience visual inspection judgment mode. The efficiency and the accuracy are obviously improved; quantitative output can be achieved, subjective visual inspection is avoided, and repeatability is good; illumination and material difference interference can be resisted, and systematic errors caused by exposure and surface reflectivity difference are reduced; normal vectorization and superposition are carried out from the smoke back side to the smoke receiving side of each measuring point, a main direction sector can be directly obtained, and direction judgment is visual; a conclusion can be quickly drawn, the method is suitable for large-area and time-sensitive field evidence collection, transparent and reviewable uncertainty expression and basis can be provided, and judicial credit collection is facilitated; the method is wide in application range and high in expandability, can be compatible with existing image data, and improves the utilization rate of existing case images.

This utility model provides a fixing device for mounting a shooting device, including an antenna, a fixing mechanism for fixing and connecting the shooting device, and a connecting mechanism. The fixing mechanism includes a fixing base, an adjustment component rotatably mounted on the side wall of the fixing base, and two clamping arms disposed on opposite sides of the fixing base for clamping the shooting device. A fixing hole is provided through the fixing base. The connecting mechanism includes a connecting base and a signal transmission component disposed on the connecting base for electrically connecting the shooting device. The surface of the connecting base facing the fixing base is recessed inward to form a connecting groove for mounting the signal transmission component. The fixing device provided by this utility model ensures the stability and reliability of the connection between the shooting device and the antenna, thereby ensuring stable antenna signal transmission, ensuring the continuity and credibility of key data, and thus ensuring the effectiveness of law enforcement evidence collection and improving work efficiency.

The application discloses a natural resource field evidence collection task generation method and device, relates to the technical field of task generation, and is applied to an evidence collection scene visualization building platform. The evidence collection scene visualization building platform stores a preset evidence collection database and a preset template warehouse. The method comprises the following steps: responding to a building request of a user for a natural resource field evidence collection task; analyzing the building request, and determining to-be-generated evidence collection task information; querying corresponding evidence collection data from the preset evidence collection database according to the to-be-generated evidence collection task information; selecting a target task template from the preset template warehouse according to the evidence collection data; performing evidence collection task configuration on the target task template by using the evidence collection data, and generating the natural resource field evidence collection task. Through the automatic process, the generation efficiency of the natural resource field evidence collection task is improved, and the complexity and error rate of manual operation are reduced.

A work evidence collection system, a computer-readable recording medium, and a program product collect highly reliable work evidence without communication at a work site in a system for collecting work evidence, which is evidence of a work date and time. A work evidence collection system for collecting work evidence as evidence of the work date and time of a worker is provided with an information terminal device having a display device, and an imaging device. The information terminal device is a portable terminal device, acquires current time information, generates a display screen including time display of the time information, and displays the generated display screen on a display device. The imaging device is held by an operator and records imaging data obtained by imaging a display device of the information terminal device at a work site. The imaging device is, for example, a wearable camera, and records imaging data obtained by imaging a view direction of a worker.

The invention provides a low-altitude security detection countering law enforcement networking cooperation method and system, and relates to the technical field of low-altitude security management, and the system comprises an initial positioning module, a cooperative network generation module, a processing instruction execution module and a law enforcement execution module. The method comprises the following steps: determining initial positioning information of a threat target through a command center according to initial detection data collected by fixed and mobile detection points; screening nearby cooperative nodes based on the initial positioning information, and dynamically generating a local cooperative processing network; according to the real-time state data and the dynamic positioning information, a differential processing instruction is issued to a specific node to execute collaborative evidence obtaining, countering or tracking actions; assigning an optimal law enforcement terminal to execute a law enforcement action according to the processing result data; according to the invention, rapid discovery, accurate positioning, co-processing and normative law enforcement of the low-altitude threat target are realized, and the response speed, the processing precision and the law enforcement reliability of low-altitude safety management and control are effectively improved.

The application provides an accident responsibility intelligent judgment method and system fusing video tracking, comprising: S1 aligning video with IMU, GPS and OBD for evidence collection, adopting frame hashing, chain hashing and timestamp to form an evidence chain; S2 completing detection segmentation on a shared main branch network; S3 realizing cross-frame association by combining appearance re-identification and motion model, and outputting trajectory, speed and occlusion recovery; S4 mapping the trajectory to BEV according to depth and calibration, and constructing a space-time scene graph by fusing lanes, signals, speed limits and the like; S5 extracting events such as lane changing, merging and signal violation, and positioning conflict points and yielding relationships; S6 generating fault factors according to a rule base and priority; S7 quantifying responsibility proportion according to weight, collision participation and reaction time; and S8 generating a report for storing evidence of key frames and rule lists. The system comprises collection and evidence collection, video understanding and tracking, space-time reconstruction, event extraction, rule reasoning, responsibility quantification and report storage modules.

The invention belongs to the technical field of artificial intelligence, and discloses a mail evidence collection method, device and equipment and a storage medium, and the method comprises the steps: obtaining at least one original mail file, and carrying out the analysis of the original mail file through a mail analysis assembly, and obtaining the header information, text information and attachment information of the original mail file; rendering the head information and the body information through an information rendering template to obtain head rendering information and body rendering information, and combining the head rendering information with the body rendering information to obtain target mail information; acquiring corresponding picture binary information according to the content ID identifier of the attachment information, and encoding the picture binary information to obtain picture encoding information; and generating a PDF file according to the target mail information and the picture coding information, and converting the PDF file into a picture form to obtain a content screenshot of the original mail file. The mail evidence collection method and device can be applied to implementation scenes of the medical and financial fields, and the efficiency and accuracy of mail evidence collection are improved.

1. The name of the design product: limited space unmanned aerial vehicle. 2. The use of the design product: carrying laser radar, edge computing terminal, realizing obstacle avoidance and autonomous flight, carrying three-axis gimbal, image real-time transmission, autonomous operation in narrow space to realize automatic inspection and inspection video AI analysis, automatic evidence collection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application relates to the technical field of information security, and discloses an information security test and evidence collection platform, which comprises a graphic user interface module, a protocol simulation module and a compliance rule judgment module.The graphic user interface module collects project information, project types, device information and task information, and stores the project information in a relational database; the device information is encrypted and stored.The protocol simulation module integrates SSH, HTTP and MySQL protocol client libraries, realizes remote device login, dynamically loads plug-in configuration and executes multi-dimensional evaluation algorithms such as regular matching, keyword scanning and configuration priority analysis.The compliance rule judgment module is internally provided with a standard rule library, generates quantitative evaluation results through Boolean operation, and integrates an SM2 signature engine to perform data signature and integrity verification.The summary is recalculated through a public key data packet and compared with a signature value, so that the data integrity is ensured.The application guarantees the accuracy and pertinence of device security evaluation.

The application relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle illegal parking evidence collection planning method, system, device and storage medium. The unmanned aerial vehicle illegal parking evidence collection planning method comprises the following steps: detecting a target region to be collected by an acoustic radar, collecting vehicle size, surrounding obstacle distribution and road attribute data in real time, and generating point cloud data; based on the point cloud data, a three-dimensional environment model containing multi-dimensional information of a vehicle to be collected, surrounding obstacles and road attributes is generated in real time; based on the three-dimensional environment model, a hovering point of an unmanned aerial vehicle sample and a pitch angle and a focal length of a cloud camera are calculated in real time, and a flight route of the unmanned aerial vehicle is dynamically generated. The application can dynamically generate a flight route and camera shooting parameters of the unmanned aerial vehicle illegal parking evidence collection, and improve the adaptability, efficiency and accuracy of the unmanned aerial vehicle in detecting illegal parking in a complex urban environment.

The invention relates to the technical field of computer information processing, and provides a financial process full-chain tracing system based on a block chain, and the system carries out the unified association of scattered process events through a responsibility chain identification mechanism with a business original initiator as a core, and builds a continuous and traceable process responsibility chain structure. On the basis, the time evolution relationship and the responsibility transfer relationship of the process event are solidified into a chain hash structure, and non-tampering evidence storage is realized in combination with a distributed account book technology, so that the authenticity and the integrity of process evidence are improved; meanwhile, an intelligent discriminant analysis mechanism oriented to a flow structure is introduced, graph structure modeling is conducted on the responsibility chain, and automatic identification and risk assessment of abnormal flow behaviors are achieved; according to the invention, traceability, verifiability and analyzability of the financial process are realized, and technical support is provided for financial verification, auditing evidence obtaining and risk management.

This invention relates to the field of blockchain technology and provides a blockchain-based copyright evidence management method and system. The method includes: comparing the current fragment-level evidence storage time offset with a threshold inflection point; when the offset exceeds the threshold inflection point, generating a corresponding correction factor based on the degree of excess; and correcting the fragment-level redundant evidence storage strength of the target government video archive based on the correction factor. This invention addresses the impact of fragment-level evidence storage time offset on subsequent evidence collection, auditing, or liability determination comparison results in multi-platform distribution and authorization scenarios. It proposes a method to construct the relationship between fragment-level evidence storage time offset and fragment correspondence matching error rate based on historical evidence storage samples. By identifying the threshold inflection point, it transforms time offset differences that were originally considered to be within a tolerable range into quantifiable control criteria.