A regulatory system based on a two-layer blockchain

Abstract

The present invention provides a supervision system based on a double-layer blockchain, including a business chain and a supervision chain system. The supervision chain system includes a cross-chain middleware, a supervision chain and a supervision big data warehouse. Business data is stored on the business chain. The cross-chain middleware obtains the stored business data and the blockchain proof data of the business data on the business chain from the business chain, and performs data specification verification on the business data. For business data that passes the data specification verification, the cross-chain middleware constructs a cross-chain transaction according to the blockchain proof data and synchronizes it to the supervision chain. After the supervision chain performs cross-chain verification on the business data according to the cross-chain transaction, the business data that passes the cross-chain verification is stored. The data of the entire process cannot be tampered with, can be verified, and can be traced. The supervision big data warehouse is used to perform data quality audits on the business data stored on the supervision chain, improve the quality of the business data, and achieve timely and accurate effective supervision of the business of the regulated institution.

Description

Technical Field

[0001] The present invention relates to the field of blockchain technology, and more specifically, to a regulatory system based on a double-layer blockchain. Background Art

[0002] Supervision is a key factor in ensuring the stable development of the market. At present, regulated institutions need to report their business data to the regulatory authorities so that the regulatory authorities can supervise the business of the regulated institutions.

[0003] However, due to the scattered and complex information in the market, diverse, heterogeneous and opaque data, and lack of credible support, it is impossible to effectively supervise the business of regulated institutions in a timely and accurate manner. Summary of the invention

[0004] In view of this, the present invention provides a supervision system based on a double-layer blockchain to achieve timely and accurate effective supervision of the business of the regulated institution.

[0005] In order to achieve the above-mentioned invention object, the specific technical solution provided by the present invention is as follows:

[0006] A regulatory system based on a double-layer blockchain, including: a business chain and a regulatory chain system;

[0007] The business chain is a blockchain used to store business data;

[0008] The chain of custody system includes cross-chain middleware, chain of custody and custody big data warehouse;

[0009] The cross-chain middleware is used to obtain the stored business data and the blockchain proof data of the business data on the business chain from the business chain, and perform data specification verification on the business data. For the business data that passes the data specification verification, a cross-chain transaction is constructed according to the blockchain proof data of the business data on the business chain and synchronized to the supervision chain;

[0010] The custody chain is used to perform cross-chain verification on business data based on cross-chain transactions and to store business data that has passed the cross-chain verification;

[0011] The regulatory big data warehouse is used to perform data quality audit on the business data stored in the regulatory chain and generate data quality audit results.

[0012] In some embodiments, the cross-chain middleware includes a data specification verification module;

[0013] The data specification verification module is used to perform data specification verification on the business data obtained from the business chain, and store the business data that passes the data specification verification in a local database.

[0014] In some embodiments, the data specification verification module is also used to generate a system log if the business data fails to pass the data specification verification.

[0015] In some embodiments, the cross-chain middleware includes a data object processing module;

[0016] The data object processing module is used to obtain the business data from the local database if the business data passes the cross-chain verification of the supervision chain, convert the business data into global data according to a preset unified supervision format, store the global data in the supervision chain in the form of NFT, store the global data in the local database, and synchronize the global data to the supervision big data warehouse.

[0017] In some embodiments, the regulatory big data warehouse is specifically used to perform data quality audit on the business data stored in the regulatory chain according to preset data quality inspection rules, and generate data quality audit results.

[0018] In some embodiments, the chain of custody system further comprises a data governance platform;

[0019] The data governance platform is used to obtain the data quality audit results, associate the data quality audit results with pre-set regulatory indicators, and separately count the existing data quality audit results and the daily incremental data quality audit results according to the regulatory indicators.

[0020] In some embodiments, the chain of custody system further comprises an innovative custody platform;

[0021] The innovative supervision platform is used to generate supervision reports according to the statistical results output by the data governance platform in accordance with a pre-set report template.

[0022] In some embodiments, the data governance platform is also used to query and display the data quality audit results and data details corresponding to the data viewing request when a data viewing request is received. The data viewing request is initiated by the regulated institution personnel after discovering that there are problematic data in the regulatory report.

[0023] In some embodiments, a business system is also included;

[0024] The business system is used to send business data that meets regulatory requirements to the business chain during the business handling process.

[0025] In some embodiments, the business system is also used to modify the problem data and send the modified business data to the business chain so that the business chain can store the modified business data.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The present invention discloses a supervision system based on a double-layer blockchain, including a business chain and a supervision chain system. The supervision chain system includes a cross-chain middleware, a supervision chain and a supervision big data warehouse. Blockchain technology is used to realize the storage of business data on the business chain. The cross-chain middleware obtains the stored business data and the blockchain proof data of the business data on the business chain from the business chain, and performs data specification verification on the business data. For the business data that passes the data specification verification, the cross-chain middleware constructs a cross-chain transaction according to the blockchain proof data of the business data on the business chain and synchronizes it to the supervision chain. After the supervision chain performs cross-chain verification on the business data according to the cross-chain transaction, the business data that passes the cross-chain verification is stored. The data of the entire process cannot be tampered with, can be verified, and can be traced. The supervision big data warehouse is used to perform data quality audit on the business data stored on the supervision chain, so as to improve the quality of the business data and realize timely and accurate effective supervision of the business of the regulated institution. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a supervision system based on a double-layer blockchain disclosed in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the structure of another supervision system based on a double-layer blockchain disclosed in an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of the structure of a cross-chain middleware disclosed in an embodiment of the present invention.

[0032] Figure 4 A schematic diagram of the structure of another supervision system based on a double-layer blockchain disclosed in an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the structure of another supervision system based on a double-layer blockchain disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0036] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0037] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0038] It should be noted that the business data (including but not limited to business party equipment information, business party information, business processing information, etc.) and data (including but not limited to data used for analysis, stored data, transaction data, etc.) involved in this application are all information and data authorized by enterprises or individuals or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0039] An embodiment of the present invention provides a supervision system based on a double-layer blockchain. Before introducing the technical solution provided by the embodiment of the present invention, an application scenario involved in the present invention is first described.

[0040] For example, the regional equity market is a private equity market that mainly serves small and medium-sized enterprises within the provincial administrative region. In order to ensure the standardization of the business of operating institutions in the regional equity market, the operating institutions need to report their business data to the regulatory authorities so that the regulatory authorities can supervise the business of the operating institutions. At present, the regional equity market has the problems of scattered and complex information, diverse and heterogeneous data, and opaque data, and lack of credible support. How to effectively supervise the business of operating institutions in a timely and accurate manner has become a technical problem that needs to be solved urgently.

[0041] Figure 1The schematic diagram of the structure of a supervision system based on a double-layer blockchain disclosed in an embodiment of the present invention is as follows: Figure 1 As shown, the regulatory system based on the double-layer blockchain includes: a business chain 11 and a regulatory chain system 12.

[0042] Business chain 11 is the underlying blockchain on the business side under the two-layer chain architecture of "regulatory chain-local business chain". Taking the regional equity market as an example, business chain 12 is a blockchain built by a regional equity market operating organization.

[0043] Business chain 11 is a blockchain used to store business data. Taking the case of users of regional equity market operating institutions performing business processing such as equity registration and equity change through business chain 11 as an example, business chain 11 stores business data such as equity registration and equity change.

[0044] The chain of custody system 12 includes a cross-chain middleware 21 , a chain of custody 22 , and a big custody data warehouse 23 .

[0045] The cross-chain middleware 21 is used to obtain the stored business data and the blockchain proof data of the business data on the business chain from the business chain 11, and perform data specification verification on the business data. For the business data that passes the data specification verification, a cross-chain transaction is constructed based on the blockchain proof data of the business data on the business chain 11 and synchronized to the supervision chain.

[0046] The blockchain proof data of the business data on the business chain 11 includes the block information corresponding to the business data on the business chain 11. The purpose of performing data specification verification on the business data is to verify whether the content of the business data complies with the regulatory requirements of the regulatory agency.

[0047] The supervision chain 22 is the underlying blockchain on the supervision side under the two-layer chain architecture of "supervision chain-local business chain". It is built by the regulatory agency and is used to perform cross-chain verification on business data based on cross-chain transactions, store business data that has passed the cross-chain verification, and return the cross-chain verification results to the cross-chain middleware 21.

[0048] Specifically, after obtaining the cross-chain transaction synchronized by the cross-chain middleware 21, the supervision chain 22 performs cross-chain verification on the cross-chain transaction. The purpose of cross-chain verification on the cross-chain transaction is to verify whether the business data is truly stored in the business chain 11, and to prevent forged data from being submitted to the supervision chain 22. The business data that has passed the cross-chain verification is stored on the supervision chain, which facilitates tracing whether the business data is truly stored in the business chain.

[0049] The supervision big data warehouse 23 is used to perform data quality audit on the business data stored in the supervision chain 22 and generate data quality audit results.

[0050] Furthermore, the supervision big data warehouse 23 is specifically used to perform data quality audit on the business data stored in the supervision chain 22 according to preset data quality inspection rules, and generate data quality audit results. For a piece of business data stored in the supervision chain 22, the data quality audit results include pass and fail.

[0051] Exemplarily, the required data items are calculated according to the regulatory indicators defined in the preset data quality check rules, and the business data objects where the data items are located are checked. If the data items in the business data objects meet the regulatory indicator calculation requirements, the data quality audit check is passed; if the data items in the business data objects do not meet the regulatory indicator calculation requirements, the data quality audit check is failed.

[0052] Exemplarily, according to the atomic rules of the business data corresponding to different regulatory indicators in the preset data quality check rules, the data quality audit of the business data stored in the chain of custody 22 is performed. Taking the regulatory indicators "registration and settlement institution" and "registration and settlement institution" corresponding to the "registration and settlement institution name" field as an example, the registration and settlement institution name is required to be checked, and the specific atomic rules are as follows:

[0053] condition:

[0054] Subject object type == 1 [Organization] &&

[0055] Qualification Category == 1 [Market Role] &&

[0056] Market role type ==7 [Trading market / operating organization] &&

[0057] Subsidiary / branch information (object array)! = null&&

[0058] (One of the object subsidiaries / branch entities references the entity qualification category == 1 [Market role] && Market role type == 5 [Registration and settlement institution])

[0059] rule:

[0060] The department name corresponding to the registration and settlement institution department! =null.

[0061] The present embodiment discloses a supervision system based on a double-layer blockchain, including a business chain and a supervision chain system. The supervision chain system includes a cross-chain middleware, a supervision chain and a supervision big data warehouse. Blockchain technology is used to realize the storage of business data on the business chain. The cross-chain middleware obtains the stored business data and the blockchain proof data of the business data on the business chain from the business chain, and performs data specification verification on the business data. For the business data that passes the data specification verification, the cross-chain middleware constructs a cross-chain transaction according to the blockchain proof data and synchronizes it to the supervision chain. After the supervision chain performs cross-chain verification on the business data according to the cross-chain transaction, the business data that passes the cross-chain verification is stored. The data of the entire process cannot be tampered with, can be verified, and can be traced. The supervision big data warehouse is used to perform data quality audit on the business data stored on the supervision chain to improve the quality of the business data and realize timely and accurate effective supervision of the business of the regulated institution.

[0062] Furthermore, in order to improve the quality of business data stored on the custody chain, the quality of business data is verified during the cross-chain verification process. Figure 2 In the double-layer blockchain-based regulatory system shown, the cross-chain middleware 21 includes a data specification verification module 211.

[0063] The data specification verification module 211 is used to perform data specification verification on the business data obtained by the business chain, and store the business data that passes the data specification verification in the local database.

[0064] Among them, the purpose of performing data specification verification on the business data obtained by the business chain is to verify whether the content of the business data meets the regulatory requirements of the regulatory agency. The process of data specification verification is to verify the business data based on the cross-chain data model designed according to the actual regulatory needs of the regulatory agency. The metadata description in the cross-chain data model (including data categories that need to be regulated such as subjects, accounts, products, transaction reports, registration, fund settlement, information disclosure, financial statements, supervision and services and their corresponding data item descriptions) is designed as JSON-Schema for data specification verification. JSON-Schema is a tool for verifying the Json data format, and it is also written in the Json language. JSON-Schema defines a set of vocabulary and rules, which are used to define Json metadata, and the metadata is also expressed in the form of Json data. Json metadata defines the specifications that Json data needs to meet, including members, structures, types, constraints, etc. On this basis, the JSON-Schema with data specification verification is used to perform data specification verification on the business data obtained by the business chain to avoid invalid data from being uploaded to the chain.

[0065] Furthermore, the data standard verification module 211 is also used to generate a system log and notify the regulated institution, such as a regional equity market operator, if the business data fails the data standard verification. After the regulated institution re-regulates the business data, it re-processes the business and stores the evidence through the business chain.

[0066] like Figure 2 In the double-layer blockchain-based regulatory system shown, the cross-chain middleware 21 also includes a data object processing module 212.

[0067] The data object processing module 212 is used to obtain business data from the local database if cross-chain verification is passed, convert the business data into global data in accordance with a pre-set unified regulatory format, store the global data in the form of NFT on the regulatory chain 22, store the global data in the local database, and synchronize the global data to the regulatory big data warehouse 23.

[0068] Among them, an optional way for the data object processing module 212 to obtain business data from the local database is: query the local database according to the business data identifier in the latest block information of the supervision chain 22 to obtain the business data.

[0069] NFT (full name is Non-Fungible Token) is a non-fungible token, a trusted digital equity certificate with unique characteristics in the blockchain network, and a data object that can record and process multi-dimensional and complex attributes on the blockchain. By storing global data in the form of NFT on the supervision chain 22, the uniqueness of global data on the supervision chain 22 is guaranteed.

[0070] By converting business data into global data according to a pre-set unified regulatory format and synchronizing the global data to the regulatory big data warehouse 23, it is ensured that the global data stored in the regulatory big data warehouse 23 complies with the unified regulatory format requirements and the global uniqueness of business data in the regulatory big data warehouse 23 is guaranteed.

[0071] In order to enable the cross-chain middleware 21 to obtain the business data stored in the business chain and the blockchain proof data of the business data on the business chain, construct a cross-chain transaction according to the blockchain proof data and synchronize the cross-chain transaction to the supervision chain to perform cross-chain verification, the business data that passes the cross-chain verification is formatted and stored on the supervision chain, such as Figure 3 The structural diagram of the cross-chain middleware 21 shown in the figure, the cross-chain middleware 21 includes: a data specification verification module 211, a data object processing module 212, a blockchain status perception module 213, a unified cross-chain service module 214 and a data cross-chain relay module 215.

[0072] The blockchain status perception module 213 is used to dynamically perceive changes in the status of the supervision chain and the business chain; if a new block is detected in the business chain, the unified cross-chain service module 214 is scheduled to perform cross-chain data synchronization, such as initiating a cross-chain data synchronization request to the unified cross-chain service module 214.

[0073] The unified cross-chain service module 214 is used to respond to the scheduling of the blockchain status perception module, call the business chain interface, query and parse the new block information of the business chain. If the new block contains business data, the business data and the blockchain proof data of the business data on the business chain are obtained from the business chain according to the business data identifier, and a cross-chain transaction is constructed according to the blockchain proof data; if the new block does not contain business data, cross-chain data synchronization is not performed.

[0074] The data standard verification module 211 is used to perform data standard verification on the business data obtained from the business chain, and store the business data that passes the data standard verification in the local database. If the business data fails the data standard verification, a system log is generated.

[0075] The data cross-chain relay module 215 is used to relay the cross-chain transactions corresponding to the business data that have passed the data specification verification to the supervision chain.

[0076] Furthermore, the blockchain status perception module 213 is also used to perceive changes in the status of the supervision chain. If a new block is detected on the supervision chain, the unified cross-chain service module 214 is dispatched to call the supervision chain interface to query and parse the latest block information of the supervision chain.

[0077] The data object processing module 212 is used to obtain business data from the local database if the business data passes the cross-chain verification of the supervision chain, that is, query the local database according to the business data identifier in the latest block information of the supervision chain to obtain the business data. The business data is converted into global data according to the pre-set unified supervision format, the global data is recorded in the supervision chain in the form of NFT, the global data is stored in the local database, and the global data is synchronized to the supervision big data warehouse.

[0078] like Figure 4 In the double-layer blockchain-based supervision system shown, the chain of supervision system 12 also includes a data governance platform 24.

[0079] The data governance platform 24 is used to obtain data quality audit results, associate the data quality audit results with pre-set regulatory indicators, and separately count the existing data quality audit results and the daily incremental data quality audit results based on the regulatory indicators.

[0080] Each type of regulatory indicator will contain corresponding fields for the verification object. Taking the "registration and settlement institution" regulatory indicator as an example, it includes five fields: registration and settlement institution / department (object), registration and settlement department name, registration and settlement institution name, registration and settlement institution qualification review time, and registration and settlement institution qualification status.

[0081] Since the data quality audit results of the regulatory big data warehouse 23 are data quality audit results for regulatory indicators, the data quality audit results can be associated with pre-set regulatory indicators based on the corresponding relationship between the data quality audit results and the regulatory indicators.

[0082] The data governance platform 24 will count the completeness of regulatory indicators and field completeness.

[0083] The calculation formula for the completeness of regulatory indicators is:

[0084] The completeness of the regulatory indicator = the total number of passes of all atomic rules corresponding to the indicator / the total number of conditions met;

[0085] The field completeness calculation formula is:

[0086] Field completeness = total number of atomic rules that pass the field / total number of conditions that meet the field.

[0087] The present embodiment discloses a supervision system based on a double-layer blockchain. By adding a data governance platform to the supervision chain system, the data quality audit results of the supervision big data warehouse are statistically analyzed from the two dimensions of supervision indicator completeness and field completeness, which helps supervision agencies and regional equity market operating institutions (i.e., regulated institutions) to quickly locate data quality problems. At the same time, the data quality audit results are used to evaluate the data quality of regional equity market operating institutions, and also ensure that the data quality in the supervision chain meets supervision requirements.

[0088] like Figure 5 In the double-layer blockchain-based supervision system shown, the chain of supervision system 12 also includes an innovative supervision platform 25.

[0089] The innovative supervision platform 25 is used to generate supervision reports based on the statistical results output by the data governance platform according to the pre-set report templates for review by regulatory agencies and regional equity market operating institutions.

[0090] The report template is set according to the actual application scenario, and the present invention does not make any specific limitation.

[0091] This embodiment discloses a supervision system based on a double-layer blockchain. By adding an innovative supervision platform to the supervision chain system, the innovative supervision platform automatically generates supervision reports through complete, reliable and traceable business data on the supervision chain, thereby ensuring the accuracy and reliability of the supervision reports. At the same time, it ensures the traceability of data on the supervision chain and the business chain, and realizes that the supervision reports can trace the historical details of business data, thereby realizing penetrating supervision.

[0092] In addition, an embodiment of the present invention discloses a supervision system based on a double-layer blockchain. The innovative supervision platform automatically generates supervision reports, so that the supervision reports are continuously updated as business data is continuously uploaded to the chain, thereby solving the problem of timeliness of supervision data and improving the timeliness of supervision data.

[0093] Furthermore, the innovative supervision platform 25 is also used to query and display the data quality audit results and data details corresponding to the data viewing request when a data viewing request is received. The data viewing request is initiated by the regulated institution personnel after discovering problematic data in the supervision report.

[0094] This embodiment discloses a supervision system based on a two-layer blockchain. By adding an innovative supervision platform to the supervision chain system, the innovative supervision platform provides a data viewing function. Regional equity market operating institutions can find and repair problematic data by checking supervision reports, thereby avoiding misreporting and omissions in business data and improving the quality of supervision data.

[0095] In addition, regional equity market operators and regulators can achieve collaborative supervision by reviewing and using regulatory reports generated based on the same set of business data in the regulatory chain.

[0096] Furthermore, the regulatory system based on the two-layer blockchain also includes a business system, which is used to send business data that meets regulatory requirements to the business chain during the business processing process. From the source of regulatory data reporting, the business data sent by the business system to the business chain meets regulatory requirements and improves the quality of business data.

[0097] Furthermore, the business system is also used to modify the problem data and send the modified business data to the business chain so that the business chain can store the modified business data.

[0098] From a technical perspective, if the business data does not comply with regulatory format requirements or cross-chain verification fails, the local operating agency will check the system logs to repair the data and re-enter the business chain.

[0099] From a business perspective, operating institutions in regional equity markets independently check regulatory reports, repair problematic data in the reports and re-upload them to the business chain for evidence.

[0100] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0101] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0102] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0103] The above-mentioned embodiments may be combined arbitrarily. For the above description of the disclosed embodiments, the features recorded in the embodiments in this specification may be replaced or combined with each other, so that professional and technical personnel in this field can implement or use the present application.

[0104] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A supervision system based on a double-layer blockchain, characterized in that: include: chain of business and chain of custody systems; The business chain is a blockchain used to store business data; The chain of custody system includes cross-chain middleware, chain of custody and custody big data warehouse; The cross-chain middleware is used to obtain the stored business data and the blockchain proof data of the business data on the business chain from the business chain, and perform data specification verification on the business data. For the business data that passes the data specification verification, a cross-chain transaction is constructed according to the blockchain proof data of the business data on the business chain and synchronized to the supervision chain; The custody chain is used to perform cross-chain verification on business data based on cross-chain transactions and to store business data that has passed the cross-chain verification; The regulatory big data warehouse is used to perform data quality audit on the business data stored in the regulatory chain and generate data quality audit results; The cross-chain middleware includes a data object processing module; The data object processing module is used to obtain the business data from the local database if the business data passes the cross-chain verification of the supervision chain, convert the business data into global data according to a preset unified supervision format, store the global data in the supervision chain in the form of a non-homogeneous token NFT, store the global data in the local database, and synchronize the global data to the supervision big data warehouse.

2. The double-layer blockchain-based supervision system according to claim 1 is characterized in that: The cross-chain middleware includes a data specification verification module; The data specification verification module is used to perform data specification verification on the business data obtained from the business chain, and store the business data that passes the data specification verification in a local database.

3. The double-layer blockchain-based supervision system according to claim 2 is characterized in that: The data specification verification module is also used to generate a system log if the business data fails to pass the data specification verification.

4. The double-layer blockchain-based supervision system according to claim 1 is characterized in that: The regulatory big data warehouse is specifically used to perform data quality audit on the business data stored in the regulatory chain according to preset data quality inspection rules, and generate data quality audit results.

5. The double-layer blockchain-based supervision system according to claim 1 is characterized in that: The chain of custody system also includes a data governance platform; The data governance platform is used to obtain the data quality audit results, associate the data quality audit results with pre-set regulatory indicators, and separately count the existing data quality audit results and the daily incremental data quality audit results according to the regulatory indicators.

6. The double-layer blockchain-based supervision system according to claim 5 is characterized in that: The chain of custody system also includes an innovative custody platform; The innovative supervision platform is used to generate supervision reports according to the statistical results output by the data governance platform in accordance with a pre-set report template.

7. The double-layer blockchain-based supervision system according to claim 6 is characterized in that: The data governance platform is also used to query and display the data quality audit results and data details corresponding to the data viewing request when a data viewing request is received. The data viewing request is initiated by the regulated institution personnel after discovering that there are problematic data in the regulatory report.

8. The double-layer blockchain-based supervision system according to claim 1 is characterized in that: It also includes business systems; The business system is used to send business data that meets regulatory requirements to the business chain during the business handling process.

9. The double-layer blockchain-based supervision system according to claim 8 is characterized in that: The business system is also used to modify the problem data and send the modified business data to the business chain, so that the business chain can store the modified business data.

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