Supply chain finance statistical data downloading method

Abstract

The invention discloses a statistical data downloading method for supply chain finance, which relates to the technical field of finance and comprises an acceptance permission judgment module, a query resource control module and a desensitization packaging evidence storage module. The acceptance permission judgment module is used for uniformly accessing the statistical application, completing identity verification, main body range binding, index range binding, time range binding and area range binding, and generating an acceptance bill and a judgment bill; the query resource control module is used for generating a query plan under the index aperture mapping dictionary, the partition information and the resource quota, binding a concurrent quota, a throttling quota and a priority queue, and outputting an executable instruction stream; and the desensitization packaging evidence storage module is used for executing differential desensitization according to the main body type and the sensitivity level, performing aggregation calculation and deduplication execution, completing result set packaging, digital watermarking and downloading delivery, generating a downloading certificate and writing a certificate abstract and an evidence index into an evidence storage chain. The method has the characteristic of high consistency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of financial technology, in particular to a statistical data download method for supply chain finance. BACKGROUND

[0002] The supply chain finance business covers core enterprises, first-tier suppliers, second-tier suppliers, distributors, logistics companies, factoring agencies and financial institutions. Statistical data are often used for risk monitoring, asset product measurement, quota occupation measurement, asset pool duration assessment, customer operation portrait and compliance reporting. The existing approach generally has problems such as scattered entry, non-uniform caliber, extensive permission determination, uncontrollable query plan, missing desensitization and watermark, and incomplete download credentials, resulting in frequent disputes over statistical caliber, resource waste caused by repeated number submission, rising data leakage risk, and difficulty in audit tracing.

[0003] The existing technology has the following problems: the statistical caliber lacks centralized mapping, the rules are scattered in report scripts and temporary configurations, making it difficult to ensure consistency across channels. The permission decision granularity is coarse, and the combination constraints of subject dimension, index dimension, time dimension and region dimension are difficult to implement, with prominent unauthorized number submission risk. The query plan is not bound to resource control, lacking concurrent quota, partition priority and throttling strategies, which can easily cause peak congestion. The desensitization strategy is single, and cannot be differentiated according to subject type and index sensitivity level, and the watermark and leakage accountability chain are missing. The download credentials are not systematic, and the application information, execution summary, index caliber version, desensitization strategy version and disk landing verification information cannot form a complete evidence chain. The breakpoint continuation, execution verification and offline supplement capabilities are weak, and download failure and repeated landing affect business continuity and consistency. Therefore, it is necessary to design a statistical data download method for supply chain finance with high consistency. SUMMARY

[0004] The present application relates to the field of financial technology, in particular to a statistical data download method for supply chain finance.

[0005] In order to solve the above technical problems, the present application provides the following technical solutions: a statistical data download system for supply chain finance, comprising a receiving authority decision module, a query resource control module, and a desensitization packaging storage module; the receiving authority decision module is used for unified access to statistical applications and completes identity verification, subject range binding, index range binding, time range binding, and area range binding, and generates a receiving single and a decision ticket; the query resource control module is used for generating a query plan under the index caliber mapping dictionary, partition information, and resource quota, and binding the concurrent quota, throttling limit, and priority queue, and outputting an executable instruction stream; the desensitization packaging storage module is used for performing differential desensitization according to the subject type and the sensitive level, and performing aggregation calculation and deduplication execution, and completing result set packaging, digital watermarking, and download delivery, and generating a download credential, and writing the credential digest and the evidence index into a storage chain.

[0006] According to the above technical solutions, the receiving authority decision module comprises a request access submodule, an identity verification submodule, a subject binding submodule, an index binding submodule, a time area binding submodule, a decision engine submodule, and a receiving single generation submodule; The query resource control module comprises a caliber mapping submodule, a partition priority submodule, a concurrent quota submodule, a throttling limit submodule, an instruction stream generation submodule, a breakpoint continuation and execution submodule; The desensitization packaging storage module comprises a desensitization strategy submodule, an aggregation calculation submodule, a deduplication reconciliation submodule, an encapsulation output submodule, a digital watermarking submodule, a download credential submodule, a storage writing submodule, and an audit index submodule; The electrical connection relationship of each submodule is that the request access submodule, the identity verification submodule, the subject binding submodule, the index binding submodule, and the time area binding submodule are electrically connected to the decision engine submodule through a system bus and output a decision ticket, the receiving single generation submodule electrically connects the receiving single and the decision ticket to the caliber mapping submodule, the caliber mapping submodule, the partition priority submodule, the concurrent quota submodule, and the throttling limit submodule are electrically connected to each other and electrically connect the generated instruction stream to the breakpoint continuation and execution submodule, the breakpoint continuation and execution submodule electrically connect the checked execution request to the aggregation calculation submodule and the deduplication reconciliation submodule, the desensitization strategy submodule and the aggregation calculation submodule are electrically connected and electrically connect the desensitization result to the encapsulation output submodule and the digital watermarking submodule, the encapsulation output submodule and the digital watermarking submodule are electrically connected and electrically connect the result to the download credential submodule, and the download credential submodule, the storage writing submodule, and the audit index submodule are electrically connected to each other to form a traceability closed loop.

[0007] A statistical data download method for supply chain finance, comprising: S1, receiving modeling and identity verification and permission decision, receiving statistical application by request access submodule, completing identity verification by identity verification submodule, generating range set under multi-dimensional constraint by subject binding submodule, index binding submodule and time area binding submodule, making fine-grained decision according to policy library and rule library by decision engine submodule and outputting decision ticket, writing application elements and decision ticket into the acceptance sheet by acceptance sheet generation submodule; S2, caliber mapping and query plan generation and resource control, mapping index caliber to basic field set and calculation order according to index dictionary and version number by caliber mapping submodule, generating partition sequence according to time partition and subject bucket by partition priority submodule, setting concurrent upper limit and rate upper limit by concurrent quota submodule and throttling quota submodule, outputting query plan with priority by instruction flow generation submodule; S3, differential desensitization, aggregation calculation and deduplication execution, selecting desensitization template based on subject type and sensitive level by desensitization strategy submodule, executing aggregation and statistics according to the mapped calculation order by aggregation calculation submodule, performing deduplication on cross-table cross-partition repeated records and consistency checking with account side aggregation by deduplication reconciliation submodule, saving progress when interruption occurs and continuing execution according to execution key after recovery by breakpoint resume and execution submodule; S4, result set packaging, digital watermarking and download delivery, generating structured result set according to acceptance sheet configuration and attaching column-level and caliber-level metadata by packaging output submodule, embedding verifiable watermark in file header and row-level payload by digital watermarking submodule, completing encryption packaging and delivery by the system, and providing verification entry on the terminal side; S5, download credential generation, chain storage and audit traceability, generating credentials by download credential submodule, including acceptance sheet number, decision ticket digest, caliber mapping version number, desensitization template version number, execution digest, file digest, and disk writing verification information, writing credential digest and evidence index into the evidence chain by evidence storage writing submodule, generating cross-dimension index by audit index submodule.

[0008] According to the above technical solution, S1 includes S1-1 and S1-2: S1-1, receiving modeling, recording application channel, applicant identification, business scenario code, index list, time interval, region range, subject list by request access submodule, completing live body verification, document consistency verification and channel consistency verification in a trusted execution environment by identity verification submodule; S1-2, permission decision, unfolding subject hierarchical relationship by subject binding submodule and comparing with black and white lists, constraining and checking sensitive level and desensitization options by index binding submodule, boundary checking of cross-region and cross-time period superimposed range by time area binding submodule, generating decision ticket and marking effective time, expiration time and upper limit of usage times by decision engine submodule.

[0009] According to the above technical solution, S2 comprises S2-1 and S2-2: S2-1, the caliber mapping is decomposed into a basic field set, a calculation order and an aggregation level by the caliber mapping submodule according to the index dictionary, and a caliber version number and a dependent mapping number are recorded; S2-2, the query plan and resource control are sorted by the partition priority submodule for time partitioning and subject bucketing, and a priority queue is generated, the concurrent quota submodule allocates concurrent upper limits according to the acceptance order, the throttle quota submodule sets the rate upper limit and the waiting queue length, and the instruction stream generation submodule generates an execution instruction stream with priority and records resource binding information.

[0010] According to the above technical solution, S3 comprises S3-1 and S3-2: S3-1, the differential de-sensitization is selected by the de-sensitization strategy submodule based on the subject type and the index sensitivity level, and the column mask, the binning, the disturbance noise, and the enumeration mapping combined strategy are recorded. The de-sensitization template version number is recorded; S3-2, the aggregation calculation and deduplication execution are completed by the aggregation calculation submodule for intra-partition aggregation and inter-partition aggregation, the deduplication reconciliation submodule is reconciled according to the execution key and the consistency reconciliation with the accounting side aggregation, the breakpoint resume and execution submodule records the progress and continues to calculate according to the execution key after recovery.

[0011] According to the above technical solution, S4 comprises S4-1 and S4-2: S4-1, the result set packaging is generated by the packaging output submodule according to the acceptance order configuration to generate a structured result set, and the column-level metadata, the caliber-level metadata, the execution summary, the file summary, and the check value are attached; S4-2, digital watermarking and delivery, digital watermarking submodule records watermark summary in file header and embeds sparse watermark fragment in row-level load, completes encryption packaging and delivery, and provides watermark check entry and file check entry on terminal side.

[0012] According to the above technical solution, S5 comprises S5-1 and S5-2: S5-1, the download voucher generation is generated by the download voucher submodule, including acceptance order number, ruling ticket summary, index caliber version number, de-sensitization template version number, execution summary, exception handling record, file summary, disk landing check information and delivery channel information; S5-2, chain storage and audit traceability, the storage writing submodule writes the voucher summary and evidence index into the storage chain, the audit index submodule generates cross-dimension index, and provides combination retrieval and evidence chain playback according to acceptance order number, subject identifier, index list, time interval and area range.

[0013] Compared with the prior art, the application has the beneficial effects that: the application carries the identity, range and caliber version of the unified acceptance single and the ruling bill, eliminates repeated communication; the index mapping dictionary and version control ensure consistent caliber across channels, reduce statistical differences; the query plan and resource control are bound to stabilize performance and cost during peak periods; the subject type and index sensitivity level drive differentiated desensitization and digital watermarking to reduce the risk of leakage and can be held accountable; the download voucher and chain evidence form a complete evidence chain, facilitating audit review; breakpoint resume, execution verification and offline supplement improve download success rate and consistency. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the application and constitute a part of the specification, which together with the embodiments of the application, serve to explain the application, and do not constitute a limitation on the application. In the drawings: Figure 1 is a schematic diagram of the overall module structure of the application. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings of the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0016] Please refer to Figure 1 The application provides a technical solution: a statistical data download system for supply chain finance, comprising an acceptance authority ruling module, a query resource control module and a desensitization and encapsulation evidence module; the acceptance authority ruling module is used for unified access to statistical applications and completes identity verification, subject range binding, index range binding, time range binding, regional range binding, generates an acceptance single and a ruling bill; the query resource control module is used for generating a query plan under the index caliber mapping dictionary, partition information and resource quota, binding concurrent quota, throttling limit and priority queue, and outputting executable instruction flow; the desensitization and encapsulation evidence module is used for performing differentiated desensitization according to subject type and sensitivity level, performing aggregation calculation and deduplication, completing result set encapsulation, digital watermarking and download delivery, generating a download voucher, and writing a voucher digest and evidence index into an evidence chain; The acceptance authority ruling module comprises a request access sub-module, an identity verification sub-module, a subject binding sub-module, an index binding sub-module, a time and region binding sub-module, a ruling engine sub-module and an acceptance single generation sub-module; The query resource control module comprises a caliber mapping sub-module, a partition priority sub-module, a concurrent quota sub-module, a throttling limit sub-module, an instruction flow generation sub-module, a breakpoint resume and execution sub-module; The desensitization encapsulation evidence storage module comprises a desensitization strategy submodule, an aggregation calculation submodule, a deduplication reconciliation submodule, an encapsulation output submodule, a digital watermark submodule, a download credential submodule, an evidence storage writing submodule, and an audit index submodule; The electrical connection relationship of each submodule is that the request access submodule, the identity verification submodule, the subject binding submodule, the index binding submodule, and the time region binding submodule are electrically connected to the adjudication engine submodule through a system bus and output an adjudication ticket, the acceptance single generation submodule electrically connects the acceptance single and the adjudication ticket to the caliber mapping submodule, the caliber mapping submodule, the partition priority submodule, the concurrent quota submodule, and the throttling limit submodule are electrically connected to each other and electrically connect the generated instruction stream to the breakpoint resume and execution submodule, the breakpoint resume and execution submodule electrically connects the checked execution request to the aggregation calculation submodule and the deduplication reconciliation submodule, the desensitization strategy submodule and the aggregation calculation submodule are electrically connected and electrically connect the desensitization result to the encapsulation output submodule and the digital watermark submodule, the encapsulation output submodule and the digital watermark submodule are electrically connected and electrically connect the result to the download credential submodule, and the download credential submodule, the evidence storage writing submodule, and the audit index submodule are electrically connected to each other to form a traceability closed loop. A statistical data download method of supply chain finance, comprising: S1, receiving statistical application through the request access submodule, completing identity verification by the identity verification submodule, generating a range set under multi-dimensional constraints by the subject binding submodule, the index binding submodule, and the time region binding submodule, performing fine-grained adjudication according to the policy library and the rule library by the adjudication engine submodule and outputting an adjudication ticket, and writing the application elements and the adjudication ticket into the acceptance single by the acceptance single generation submodule; S2, caliber mapping, query plan generation, and resource control, mapping the index caliber to the basic field set and the calculation order according to the index dictionary and the version number by the caliber mapping submodule, generating a partition sequence according to the time partition and the subject bucket by the partition priority submodule, setting the concurrent upper limit and the rate upper limit by the concurrent quota submodule and the throttling limit submodule, and outputting the query plan with priority by the instruction stream generation submodule; S3, differential desensitization, aggregation calculation, and deduplication execution, selecting a desensitization template based on the subject type and the sensitive level by the desensitization strategy submodule, performing aggregation and statistics according to the mapped calculation order by the aggregation calculation submodule, performing deduplication on cross-table cross-partition repeated records and consistency checking with the account side summary by the deduplication reconciliation submodule, and saving the progress when interruption occurs and continuing execution according to the execution key after recovery by the breakpoint resume and execution submodule; S4, result set packaging, digital watermarking and download delivery, the packaging output submodule generates structured result set according to the accepted single configuration and attaches column-level and dimension-level metadata, the digital watermarking submodule embeds verifiable watermark in the file header and row-level load, the system completes encryption packaging and delivery, and provides a verification entry on the terminal side; S5, download credential generation, chain storage evidence and audit traceability, the download credential submodule generates credentials, which contain accepted single number, ruling ticket digest, dimension mapping version number, desensitization template version number, execution digest, file digest, disk writing verification information, the storage evidence writing submodule writes credential digest and evidence index into the storage evidence chain, and the audit index submodule generates cross-dimension index; S1 includes S1-1 and S1-2: S1-1, acceptance modeling, through the request access submodule, record the application channel, applicant identification, business scenario code, index list, time interval, regional range, subject list, the identity verification submodule completes the live body review, document consistency review and channel consistency review in the trusted execution environment; S1-2, permission ruling, the subject binding submodule expands the subject hierarchical relationship and compares it with the black and white list, the index binding submodule performs constraint review on the sensitive level and desensitization options, the time and region binding submodule performs boundary review on the superimposed range across regions and time periods, and the ruling engine submodule generates ruling tickets and marks the effective time, expiration time and upper limit of the number of uses; S2 includes S2-1 and S2-2: S2-1, dimension mapping, the dimension mapping submodule decomposes the index into a set of basic fields, calculation order and aggregation level according to the index dictionary, and records the dimension version number and dependency mapping number; S2-2, query plan and resource control, the partition priority submodule sorts the time partition and subject bucket and generates a priority queue, the concurrent quota submodule allocates concurrent upper limit according to the accepted single, channel and time window, the throttle quota submodule sets the rate upper limit and the waiting queue length, and the instruction flow generation submodule generates an execution instruction flow with priority and records resource binding information; S3 includes S3-1 and S3-2: S3-1, differentiated desensitization, the desensitization strategy submodule selects column mask, binning, disturbance noise and enumeration mapping combined strategy based on subject type and index sensitive level, and records the desensitization template version number; S3-2, aggregation calculation and deduplication execution, the aggregation calculation submodule completes intra-partition aggregation and inter-partition aggregation, the deduplication reconciliation submodule deduplicates according to the execution key and performs consistency reconciliation with the summary on the accounting side, and the breakpoint resume and execution submodule records the progress and continues the calculation according to the execution key after recovery; S4 includes S4-1 and S4-2: S4-1, the result set encapsulation is configured by the encapsulation output submodule to generate a structured result set according to the received single and attach column-level metadata, dimension-level metadata, execution summary, file summary, and check value; S4-2, the digital watermark and delivery are performed by the digital watermark submodule to record a watermark summary in the file header and embed sparse watermark fragments in the row-level load, complete the encrypted packaging, and deliver the result, and provide a watermark check entry and a file check entry on the terminal side; S5 includes S5-1 and S5-2: S5-1, the download credential generation is performed by the download credential submodule to generate a credential including the received single number, the ruling ticket summary, the index dimension version number, the desensitization template version number, the execution summary, the exception handling record, the file summary, the disk writing check information, and the delivery channel information; S5-2, the chain storage and audit traceability are performed by the storage writing submodule to write the credential summary and evidence index into the storage chain, and the audit index submodule generates a cross-dimension index to provide a combination search according to the received single number, the subject identification, the index list, the time interval, and the region range, and evidence chain playback.

[0017] The system is deployed in a central side platform and a terminal side cooperative form. The central side platform carries a rule base, a dimension mapping dictionary, a resource controller, a desensitization strategy base, an aggregation calculation engine, a storage link interface, and an audit index. The terminal side carries an access component, a download component, and a check component. The two sides exchange data through the received single, the ruling ticket, the instruction flow, the execution summary, the download credential, and the evidence index. The electrical connection relationship of each submodule is consistent with the second claim.

[0018] During the reception, the request access submodule records the application elements and generates an application number. The identity verification submodule checks the consistency of the identification documents, the living body information, and the channel in the trusted execution environment, and outputs an identity verification conclusion. The subject binding submodule expands the core enterprise and the upstream and downstream levels into a subject set and compares them with the black and white lists. The index binding submodule loads the required desensitization items according to the index sensitivity level. The time and region binding submodule checks the boundaries and intersection of the time span and the region span. The ruling engine submodule generates a ruling ticket under the constraint of the rule base, marks the available number of times and the effective expiration time, and the received single generation submodule writes the application elements and the ruling ticket into the received single and enters the append-only state.

[0019] The dimension mapping submodule reads the dimension version number from the index dictionary, disassembles each index into a basic field set, a calculation order, and an aggregation level, and generates a dependency mapping number. The partition priority submodule generates a priority queue according to the time partition and the subject bucket. The concurrent quota submodule allocates the concurrent upper limit according to the application number, the channel, and the time window, and the throttle quota submodule sets the rate upper limit and the waiting queue length. The instruction flow generation submodule summarizes the above information to form a query plan with priority and records the resource binding information, and submits it to the execution queue.

[0020] The desensitization strategy submodule loads the desensitization template according to the subject type and the index sensitivity level, contains the combined strategy of column mask, binning, disturbance noise, and enumeration mapping, and records the desensitization template version number. The aggregation calculation submodule performs in-zone aggregation and inter-zone aggregation on the calculation engine. The deduplication reconciliation submodule deduplicates according to the idempotent key and checks consistency with the account side aggregation. The breakpoint continuation and idempotent submodule saves the progress when network fluctuations or resource interruptions occur, and continues to execute according to the idempotent key after recovery, ensuring the uniqueness and repeatability of the results.

[0021] The packaging output submodule generates a structured result set according to the single configuration, and attaches column-level metadata and dimension-level metadata, execution summary, file summary, and check value. The digital watermarking submodule writes a watermark summary into the file header and embeds row-level watermark fragments in a sparse strategy, so that the leakage accountability has a verifiable anchor point. The system delivers after encryption and packaging, and the terminal side provides a watermark check entry and a file check entry, and the applicant can perform local check after downloading and return the check result.

[0022] It should be noted that the relational terms, such as first and second, are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between or among the entities or operations. Moreover, the terms "comprises", "comprising", and any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0023] Finally, it should be noted that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A statistical data download system for supply chain finance, characterized in that: This includes a module for adjudicating acceptance authority, a module for controlling query resources, and a module for de-identifying, packaging, and storing evidence. The acceptance and adjudication module is used to uniformly access statistical applications and complete identity verification, subject scope binding, indicator scope binding, time scope binding, and regional scope binding, and generate acceptance forms and adjudication documents; the query resource control module is used to generate query plans under the indicator caliber mapping dictionary, partition information, and resource quotas, and bind concurrent quotas, throttling limits, and priority queues, and output executable instruction streams. The desensitization, encapsulation, and evidence storage module is used to perform differentiated desensitization according to subject type and sensitivity level, perform aggregation calculation and deduplication, complete result set encapsulation, digital watermarking, download and delivery, generate download vouchers, and write voucher summaries and evidence indexes into the evidence storage chain.

2. The statistical data download system for supply chain finance according to claim 1, characterized in that: The acceptance authority adjudication module includes a request access submodule, an identity verification submodule, a subject binding submodule, an indicator binding submodule, a time zone binding submodule, an adjudication engine submodule, and an acceptance form generation submodule; The query resource control module includes a caliber mapping submodule, a partition priority submodule, a concurrency quota submodule, a throttling quota submodule, an instruction stream generation submodule, and a breakpoint resume and execution submodule. The de-identification, encapsulation, and evidence preservation module includes a de-identification strategy submodule, an aggregation calculation submodule, a deduplication and reconciliation submodule, an encapsulation and output submodule, a digital watermark submodule, a voucher download submodule, an evidence preservation writing submodule, and an audit index submodule. The electrical connections of each submodule are as follows: the request access submodule, identity verification submodule, subject binding submodule, indicator binding submodule, and time zone binding submodule are electrically connected to the adjudication engine submodule via the system bus and output adjudication documents. The acceptance form generation submodule electrically connects the acceptance form and adjudication documents to the caliber mapping submodule. The caliber mapping submodule, partition priority submodule, concurrent quota submodule, and throttling limit submodule are electrically connected to each other and the generated instruction stream is electrically connected to the breakpoint resume and execution submodule. The breakpoint resume and execution submodule electrically connects the checked execution request to the aggregation calculation submodule and the deduplication reconciliation submodule. The desensitization strategy submodule is electrically connected to the aggregation calculation submodule and the desensitization result is electrically connected to the encapsulation output submodule and the digital watermarking submodule. The encapsulation output submodule and the digital watermarking submodule are electrically connected and the result is electrically connected to the download voucher submodule. The download voucher submodule, evidence storage writing submodule, and audit index submodule are electrically connected to each other to form a traceability closed loop.

3. A method for downloading statistical data in supply chain finance, characterized in that: include: S1. Acceptance Modeling, Identity Verification and Permission Adjudication: The request access submodule receives statistical applications, the identity verification submodule completes identity verification, the subject binding submodule, the indicator binding submodule, and the time region binding submodule generate a range set under multi-dimensional constraints, the adjudication engine submodule performs fine-grained adjudication based on the strategy library and rule library and outputs adjudication tickets, and the acceptance form generation submodule writes the application elements and adjudication tickets into the acceptance form. S2, the caliber mapping and query plan generation and resource control are achieved by the caliber mapping submodule mapping the caliber of indicators to the basic field set and calculation order based on the indicator dictionary and version number, the partition priority submodule generating the partition sequence based on time partition and main body bucket, the concurrency quota submodule and the throttling quota submodule jointly setting the concurrency limit and rate limit, and the instruction stream generation submodule outputting the query plan with priority. S3, Differentiated Desensitization and Aggregation Calculation and Deduplication Execution: The desensitization strategy submodule selects a desensitization template based on the subject type and sensitivity level. The aggregation calculation submodule performs aggregation and statistics according to the mapped calculation order. The deduplication and reconciliation submodule deduplicates duplicate records across tables and partitions and performs consistency verification with the accounting side summary. The breakpoint resume and execution submodule saves the progress when interruption occurs and continues execution by pressing the execution button after recovery. S4. The encapsulation and digital watermarking of the result set and the download and delivery are accomplished by the encapsulation output submodule, which generates a structured result set according to the acceptance form configuration and includes column-level and caliber-level metadata. The digital watermarking submodule embeds a verifiable watermark in the file header and row-level payload. The system completes the encryption packaging and delivery and provides a verification entry on the terminal side. S5. The Download Voucher Generation, Chain-based Evidence Storage, and Audit Traceability submodule generates vouchers, which include the acceptance slip number, adjudication document summary, caliber mapping version number, desensitization template version number, execution summary, file summary, and disk verification information. The Evidence Storage Writing submodule writes the voucher summary and evidence index into the evidence storage chain, and the Audit Index submodule generates a cross-dimensional index.

4. The method for downloading statistical data in supply chain finance according to claim 3, characterized in that: S1 includes S1-1 and S1-2: S1-1, The acceptance modeling module records the application channel, applicant identifier, business scenario code, indicator list, time interval, regional scope, and subject list through the request access submodule. The identity verification submodule completes the liveness verification, document consistency verification, and channel consistency verification in a trusted execution environment. S1-2. The permission adjudication is carried out by the subject binding submodule, which expands the subject hierarchy and compares it with the blacklist and whitelist. The indicator binding submodule performs constraint verification on the sensitivity level and the mandatory desensitization options. The time area binding submodule performs boundary verification on the cross-region and cross-time period overlapping range. The adjudication engine submodule generates adjudication tickets and marks the effective time, expiration time and the maximum number of uses.

5. The method for downloading statistical data in supply chain finance according to claim 4, characterized in that: S2 includes S2-1 and S2-2: S2-1. The caliber mapping submodule breaks down the indicators into a set of basic fields, calculation order and aggregation level according to the indicator dictionary, and records the caliber version number and dependency mapping number. S2-2, Query Plan and Resource Control: The partition priority submodule sorts the time partitions and main buckets and generates a priority queue; the concurrency quota submodule allocates the concurrency limit according to the acceptance order, channel and time window; the throttling quota submodule sets the rate limit and waiting queue length; and the instruction stream generation submodule generates a priority execution instruction stream and records resource binding information.

6. The method for downloading statistical data in supply chain finance according to claim 5, characterized in that: S3 includes S3-1 and S3-2: S3-1. Differentiated desensitization: The desensitization strategy submodule selects column masking, binning, perturbation noise, and enumeration mapping combination strategies based on the subject type and indicator sensitivity level, and records the desensitization template version number. S3-2, Aggregation Calculation and Deduplication Execution: The Aggregation Calculation submodule completes the aggregation within the partition and the summary within the interval. The Deduplication Reconciliation submodule performs deduplication by pressing the Execute key and reconciles with the summary on the accounting side. The Resume and Execution submodule records the progress and continues the calculation by pressing the Execute key after the interruption is resumed.

7. The method for downloading statistical data in supply chain finance according to claim 6, characterized in that: S4 includes S4-1 and S4-2: S4-1. The result set encapsulation is generated by the encapsulation output submodule according to the acceptance form configuration, which includes a structured result set with column-level metadata, caliber-level metadata, execution summary, file summary, and verification value. S4-2, Digital Watermarking and Delivery: The digital watermarking submodule records the watermark summary in the file header and embeds sparse watermark fragments in the line-level payload. After encryption and packaging, it is delivered and provides watermark verification entry and file verification entry on the terminal side.

8. The method for downloading statistical data in supply chain finance according to claim 7, characterized in that: S5 includes S5-1 and S5-2: S5-1, Download Voucher Generation: The Download Voucher submodule generates vouchers, which include the acceptance form number, adjudication document summary, indicator caliber version number, desensitization template version number, execution summary, exception handling record, file summary, disk verification information, and delivery channel information. S5-2, Chain-based Evidence Preservation and Audit Traceability: The evidence preservation writing submodule writes the voucher summary and evidence index into the evidence preservation chain, and the audit index submodule generates a cross-dimensional index, providing combined retrieval and evidence chain playback by acceptance order number, subject identifier, indicator list, time interval, and regional scope.

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