WO2018176966A1

WO2018176966A1 - Method and apparatus for processing financial data based on blockchain, and electronic device

Info

Publication number: WO2018176966A1
Application number: PCT/CN2017/120385
Authority: WO
Inventors: 郝延山; 谢锦生; 龙旻明; 张晴; 杜衡
Original assignee: 北京京东金融科技控股有限公司
Priority date: 2017-03-31
Filing date: 2017-12-30
Publication date: 2018-10-04
Also published as: CN106991165A; CN106991165B

Abstract

Disclosed are a method and apparatus for processing financial data based on a blockchain, and an electronic device. The method comprises: receiving and verifying financial data; carrying out Hash processing on the verified financial data to generate financial data ID; generating financial status data according to the financial data; and encapsulating the financial data, the financial status data and the financial data ID to generate block data and block height. By means of the method and apparatus for processing financial data based on the blockchain and the electronic device, the conflict between financial data variability and blockchain execution singleness can be resolved.

Description

Method, device and electronic device for processing financial data based on blockchain

The present disclosure claims the priority of the invention patent application whose application date is March 31, 2017, the application number is CN201710207746.3, and the invention is entitled "Method, device and electronic device for processing financial data based on blockchain".

Technical field

The present invention relates to the field of financial data information processing, and in particular to a method and apparatus for processing financial data based on a blockchain, and an electronic device and a computer readable medium.

Background technique

Asset-backed securities (ABS) refers to financial activities in which securities are issued on the basis of standardized product design for credit enhancement, supported by stable cash flows generated by the underlying assets in the future. Since the asset securitization business has been in the market since 2014, the market has grown rapidly and has reached a stock scale of nearly 2 trillion. The asset-based securitization business can fully optimize the financial institution's asset structure, reduce the financial market system risk, release the financial institution's loan scale, increase its capital adequacy ratio, and bring great benefits in improving the financial institution's profit model and accelerating its business transformation. s help.

Blockchain technology is a new type of decentralization protocol that can securely store transaction data, unforgeable and falsified information, and automate smart contracts without any centralization agency review. It combines all market participants to maintain a set of transaction book data, grasp and verify the contents of the books in real time, jointly maintain the authenticity and integrity of the books, improve the transparency and accountability of the asset securitization system, and effectively avoid financial fraud. phenomenon. This "decentralized" and "de-trust" mechanism, in a far-reaching sense, reduces the cost of credit in the global trading chain.

However, the structure of financial data cannot be unified and stable, and has complex and varied business characteristics. The business logic that can be carried by the blockchain needs to be relatively stable. Otherwise, it is difficult to ensure that the technical characteristics of the blockchain technology itself can be exerted. At present, in the chain of the blockchain, all the business data and the blockchain itself are exchanged by executing the relevant code logic built in the node; in the case of coping with the financial asset data, there is no relevant special treatment; Financial asset information data fields are complex, and operate according to the respective business needs in combination with the blockchain; once the business needs change, it is easy to generate pre-deployed chain code changes; and the blockchain chain code does not currently have the technical conditions for frequent changes. Because this will make the data format on the chain lose continuity, which will make the data difficult to trace, and eventually lose the relevant advantages of the blockchain certificate data.

Therefore, there is a need for a new method, apparatus and electronic device for processing financial data based on blockchain.

The above information disclosed in the Background section is only for enhancement of understanding of the background of the invention, and thus it may include information that does not constitute the prior art known to those of ordinary skill in the art.

Summary of the invention

In view of this, the present invention provides a method and apparatus for processing financial data based on a blockchain, and an electronic device and a computer readable medium, which can alleviate the conflict between the financial data change and the block chain execution operation.

Other features and advantages of the invention will be apparent from the description and appended claims.

According to a first aspect of the present invention, a method for processing financial data based on a blockchain is provided, the method comprising: receiving and verifying financial data; performing hash processing on the verified financial data to generate a financial data ID; The financial data generates financial status data; the financial data, the financial status data, and the financial data ID are encapsulated to generate block data and block height.

In an exemplary embodiment of the present disclosure, the method further includes: returning the financial data ID, the block data, and the block height to the sender.

In an exemplary embodiment of the present disclosure, the method further includes: performing block code deployment on the block data.

In an exemplary embodiment of the present disclosure, performing block code deployment on the block data includes: performing block code deployment of the block data in the link chain.

In an exemplary embodiment of the present disclosure, the method further includes: acquiring a change request, where the change request includes: the financial data ID and the second data; verifying the financial data ID; and after the financial data ID passes the verification, passing the financial data ID Obtaining block data; and performing a change operation on the block data by the second data, and changing the block height corresponding to the block data.

In an exemplary embodiment of the present disclosure, the method further includes: acquiring asset key data and asset state data through the financial data; determining whether the asset key data and the asset state data have a binding relationship; and if the asset key data and the asset state data If there is a binding relationship, the asset key data and asset status data are updated.

In an exemplary embodiment of the present disclosure, the method further includes: determining whether the asset key data and the asset state data satisfy a predetermined relationship; and returning the error prompt information if the asset key data and the asset state data do not satisfy the predetermined relationship.

In an exemplary embodiment of the present disclosure, the method further includes: returning the changed block data and the changed block height to the sender.

In an exemplary embodiment of the present disclosure, the method further includes: performing chain code deployment on the changed block data.

In an exemplary embodiment of the present disclosure, the method further includes: acquiring a query request including: a financial data ID, a block height; acquiring financial data by a financial data ID and a block height; and returning the financial data to the requesting party .

In an exemplary embodiment of the present disclosure, obtaining financial data by the financial data ID and the block height includes: determining whether the block height is empty; and if the block height is empty, acquiring the maximum block height corresponding to Financial data.

According to a second aspect of the present invention, an apparatus for processing financial data based on a blockchain is provided, the apparatus comprising: a receiving module for receiving and verifying financial data; and a hashing module for verifying the financial The data is hashed to generate a financial data ID; the data module is configured to generate financial state data according to the financial data; and a packaging module is configured to encapsulate the financial data, the financial state data, and the financial data ID to generate the block data and the block height.

In an exemplary embodiment of the present disclosure, the method further includes: a requesting module, configured to acquire a change request, where the change request includes: a financial data ID and a second data; a verification module, configured to verify the financial data ID; and a query module And configured to acquire the block data by using the financial data ID after the financial data ID passes the verification; and the change module, configured to perform the change operation on the block data by using the second data, and change the block height corresponding to the block data.

According to a third aspect of the invention, comprising: a processor; a memory storing instructions for the processor to control operations as above.

According to a fourth aspect of the present disclosure, there is provided a computer readable medium having stored thereon a computer program, the program being executed by a processor to implement the method of the first aspect of the above embodiments.

The blockchain-based method, apparatus, and electronic device for processing financial data according to the present invention can alleviate conflicts between financial data variability and blockchain execution operations.

The above general description and the following detailed description are merely exemplary and are not intended to limit the invention.

DRAWINGS

The above and other objects, features and advantages of the present invention will become more apparent from the embodiments of the invention. The drawings described below are only some of the embodiments of the present invention, and other drawings may be obtained from those skilled in the art without departing from the drawings.

FIG. 1 is a flowchart of a method for processing financial data based on a blockchain, according to an exemplary embodiment.

2 is a flow chart of a method for processing financial data based on a blockchain, according to another exemplary embodiment.

FIG. 3 is a block diagram of an apparatus for processing financial data based on a blockchain, according to an exemplary embodiment.

FIG. 4 is a block diagram of an apparatus for processing financial data based on a blockchain, according to another exemplary embodiment.

FIG. 5 is a schematic diagram of a system for processing financial data based on a blockchain, according to another exemplary embodiment.

FIG. 6 is a block diagram of an electronic device, according to another exemplary embodiment.

detailed description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in a variety of forms and should not be construed as being limited to the embodiments set forth herein. To those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and the repeated description thereof will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are set forth However, one skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be employed. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

The block diagrams shown in the figures are merely functional entities and do not necessarily have to correspond to physically separate entities. That is, these functional entities may be implemented in software, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and/or processor devices and/or microcontroller devices. entity.

The flowcharts shown in the figures are merely illustrative, and not all of the contents and operations/steps are necessarily included, and are not necessarily performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially merged, so the actual execution order may vary depending on the actual situation.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components, these components are not limited by these terms. These terms are used to distinguish one component from another. Thus, a first component discussed below could be termed a second component without departing from the teachings of the present disclosure. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that the drawings are only schematic diagrams of exemplary embodiments, and the modules or processes in the drawings are not necessarily required to implement the invention, and therefore are not intended to limit the scope of the invention.

The exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, in S102, financial data is received and verified. Financial data: For example, personal credit data is the lending company's corporate assets for lending companies; its data includes loan data sheets, repayment plans, overdue statistics, and lender information. Verify the financial data. Data verification is a check value calculated for the original data by a specified algorithm to ensure the integrity of the data. The receiver uses the same algorithm to calculate the check value once. If the check value is the same as the data provided, the data is complete.

In S104, the verified financial data is hashed to generate a financial data ID. Hash processing is the input of any length (also called pre-map), which is transformed into a fixed-length output by a hashing algorithm. The output is a hash value. This conversion is a compression map, that is, the space of the hash value is usually much smaller than the input space, and different inputs may be hashed to the same output, so it is impossible to uniquely determine the input value from the hash value. Simply put, it is a function that compresses messages of any length into a fixed-length message digest. All hash functions have one of the following basic characteristics: If the two hash values are not the same (according to the same function), the original input of the two hash values is also different. This property is a deterministic result of the hash function. Through the hash processing, the financial asset data generates an ID value corresponding to the word financial data.

In S106, financial status data is generated based on the financial data. The asset status data is generated based on the financial data. For example, the financial status data includes several data fields of the asset key data.

In S108, the financial data, the financial status data, and the financial data ID are encapsulated to generate block data and block height. For example, the financial asset data and the related information mentioned above may be packaged into transactions to generate block data. It is also possible, for example, to call the chain code for the winding operation and to record the height of the generated block. The block height refers to the number of blocks between a block and the first block. The initial block height may be, for example, 0, and the subsequently generated block heights are sequentially incremented.

According to the blockchain-based method for processing financial data according to the present invention, the conflict between the financial data change and the block chain execution operation can be alleviated by the financial data check processing and the unified encapsulation processing.

It will be clearly understood that the present invention describes how to make and use particular examples, but the principles of the invention are not limited to the details of the examples. Rather, these principles can be applied to many other embodiments based on the teachings of the present disclosure.

In an exemplary embodiment of the present disclosure, the method further includes: returning the financial data ID, the block data, and the block height to a sender.

In an exemplary embodiment of the present disclosure, the method further includes: performing the chain code deployment on the block data. In an exemplary embodiment of the present disclosure, the performing the chain code deployment on the block data comprises: performing the block data deployment of the block data in a federation chain.

The blockchain is essentially a collective term for several technical solutions, including peer-to-peer peer-to-peer network transport protocols, cryptographic encryption algorithms, distributed consensus mechanisms, and Nash equilibrium game design. Based on the combination of these technologies, a reliable database of decentralization and trust can be realized, and an algorithmic proof mechanism is used to ensure traceable traceability of information recorded on the chain, which cannot be forged and cannot be tampered with. The alliance blockchain refers to the blockchain whose consensus process is controlled by pre-selected nodes; for example, imagine a community of 15 financial institutions, each of which runs a node, and in order to make each block effective Obtained confirmation from 10 of them (2/3 confirmation). The blockchain may allow everyone to read, or be restricted to participants, or take a hybrid route, such as the root hash of the block and its API (application programming interface), the API allows the outside world to be used Make a limited number of queries and get information about the status of the blockchain. These blockchains can be thought of as "partial decentralization." The alliance chain adopts a multi-center approach, and the participant nodes are also set in advance and confirmed by a consensus mechanism. In the alliance chain, different from the public chain, you can set and control permissions, and have higher applicability and scalability.

According to some embodiments, for example, in the embodiment, multiple verification points are deployed, for example, four verification nodes, an asset side, a fund side, and a money channel side each have a private key, and each verification node A distributed set of ledger databases is deployed locally (or in the cloud). Each transaction in the blockchain management system requires all nodes to reach a consensus before they can be chained.

According to the blockchain-based method for processing financial data according to the present invention, by deploying the financial data in the chain code of the alliance chain, the cost and time of reading and writing in different places can be greatly reduced, and a simpler and more efficient consensus service can be provided. At the same time, inherit the advantages of decentralization and reduce the pressure of monopoly.

As shown in FIG. 2, in S202, a change request is acquired, and the change request includes a financial data ID and second data. When the block data needs to be changed, the financial data ID and the second data that need to be changed are acquired, and the second data may be, for example, data to be changed.

In S204, the financial data ID is verified. Verify the accuracy of the financial data ID.

In S206, after the financial data ID passes the verification, the block data is acquired by the financial data ID. The block data corresponding to the financial data ID is obtained by the financial data ID, and the block data is the block data already stored in the system as described above. The block data includes related financial asset data, financial status data and other related data corresponding to the financial data ID.

In S208, the block data is changed by the second data, and the block height corresponding to the block data is changed. After the block data is changed, the corresponding block height information is changed. As mentioned above, the block height refers to the number of blocks between a block and the original first block. The initial block height may be, for example, 0, and the subsequently generated block heights are sequentially incremented. For example, the height of the block after the change is increased by one or the value of the original block, and the present invention is not limited thereto.

In an exemplary embodiment of the present disclosure, the method further includes: acquiring asset key data and asset state data through the financial data; determining whether the asset key data and the asset state data have a binding relationship; and if the asset key data If there is a binding relationship with the asset status data, the asset key data and asset status data are updated.

In an exemplary embodiment of the present disclosure, the method further includes: determining whether the asset key data and the asset state data satisfy a predetermined relationship; and returning an error prompt if the asset key data and asset state data do not satisfy a predetermined relationship information. Submitting the financial asset data corresponding to the asset ID; and updating the state corresponding to the financial asset data and the asset key data as needed; the asset key data and the asset state may be, for example, strongly bound or not; if there is a strong binding relationship And the state after the change does not satisfy the relationship, and an error response message is returned.

In an exemplary embodiment of the present disclosure, the method further includes: performing the chain code deployment on the changed block data.

In an exemplary embodiment of the present disclosure, the method further includes: acquiring a query request, where the query request includes: a financial data ID, a block height; acquiring the financial data by using the financial data ID and the block height And returning the financial data to the requesting party. In an exemplary embodiment of the present disclosure, the obtaining the financial data by the financial data ID and the block height comprises: determining whether the block height is empty; and if the block If the height is empty, the financial data corresponding to the maximum block height is obtained. The data is queried according to the financial asset ID and the block height. If the block height is not specified, the largest (latest) block information corresponding to the financial asset data ID is returned.

Those skilled in the art will appreciate that all or a portion of the steps to implement the above-described embodiments are implemented as a computer program executed by a CPU. When the computer program is executed by the CPU, the above-described functions defined by the above-described methods provided by the present invention are performed. The program may be stored in a computer readable storage medium, which may be a read only memory, a magnetic disk or an optical disk, or the like.

Further, it should be noted that the above-described drawings are merely illustrative of the processes included in the method according to the exemplary embodiments of the present invention, and are not intended to be limiting. It is easy to understand that the processing shown in the above figures does not indicate or limit the chronological order of these processes. In addition, it is also easy to understand that these processes may be performed synchronously or asynchronously, for example, in a plurality of modules.

The following is an embodiment of the apparatus of the present invention, which can be used to carry out the method embodiments of the present invention. For details not disclosed in the embodiment of the device of the present invention, please refer to the method embodiment of the present invention.

The receiving module 302 is configured to receive and verify financial data.

The hash module 304 is configured to perform hash processing on the verified financial data to generate a financial data ID.

The data module 306 is configured to generate financial status data based on the financial data.

The encapsulation module 308 is configured to encapsulate the financial data, the financial status data, and the financial data ID to generate block data and block height.

According to the blockchain-based processing of financial data according to the present invention, the conflict between the financial data change and the block chain execution operation can be alleviated by the financial data check processing and the unified encapsulation processing.

The requesting module 402 is configured to acquire a change request, where the change request includes: a financial data ID and a second data.

The verification module 404 is configured to verify the financial data ID.

The query module 406 is configured to acquire the block data by using the financial data ID after the financial data ID passes the verification.

The change module 408 is configured to perform a change operation on the block data by using the second data, and change a block height corresponding to the block data.

As shown in FIG. 5, the above device may be, for example, a unified interface device in a financial system. After the financial asset information is processed by the unified interface device, it enters the system and is processed by a subsequent process.

The unified interface device can realize the following functions: publishing asset data: mainly used for the financial asset issuer to first release the financial asset and exchange the asset ID information with the device; the asset ID is generated according to the asset related information, and the hash operation is performed; The financial asset data information is then edited into the asset data field, and the asset ID, asset status, and asset data of the asset are added. After that, the financial asset data is packaged into a transaction, the chain code is called for the chain operation, and the generated area is recorded. The height of the block is returned to the financial asset issuer;

Change asset data: mainly used to change the financial asset related data information after the financial assets are released; at this time, the financial asset issuer needs to send the financial asset data with the asset ID to the device; after the device verifies the asset ID, the financial asset data is changed and generated. New asset status; then package the financial asset data into a transaction, call the chain code to perform the uplink operation, and record the height of the generated block to return to the financial asset issuer;

Querying asset data: mainly used by financial asset issuers to retrieve asset information that has been released to the blockchain; the retrieval process is to provide the financial asset ID of the required query to the device, and the block height corresponding to the financial asset, ie It can return the related asset data of the corresponding asset ID in the transaction under the block corresponding to the block height; if the corresponding block height is ignored when querying the asset data, the latest financial asset will be returned. The financial assets corresponding to the financial assets corresponding to the ID, the corresponding financial asset data and the asset status, asset key data and other items.

The device for processing financial data based on the blockchain according to the present invention can be compatible with the diversity of financial asset data in the front end, ensure the stability of the chain code in the back end, and refine and process the financial asset data to generate uniform stability. Blockchain interactive interface.

As shown in FIG. 6, the electronic device 60 can include a processor 610, a memory 620, a transmitter 630, and a receiver 640.

Memory 620 can store instructions for processor 710 to control operational processing. Memory 620 can include volatile or non-volatile memory such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), Programming read only memory (PROM), read only memory (ROM), etc., the invention is not limited thereto.

Processor 610 can invoke instructions stored in memory 620 to control related operations. According to an embodiment, the memory 620 stores instructions for the processor 610 to: receive and verify financial data; hash the verified financial data to generate a financial data ID; generate, according to the financial data Financial status data; the financial data, the financial status data, and the financial data ID are packaged to generate block data and block height. It is easy to understand that the memory 620 can also store instructions for the processor 610 to control other operations in accordance with embodiments of the present invention, and details are not described herein.

In another aspect, the present application further provides a computer readable medium, which may be included in an electronic device described in the above embodiments, or may be separately present without being assembled into the electronic device. in. The computer readable medium carries one or more programs that, when executed by one of the electronic devices, cause the electronic device to implement the method of FIGS. 1 and 2 in the above embodiments.

It will be understood by those skilled in the art that the above various modules may be distributed in the device according to the description of the embodiments, or may be correspondingly changed in one or more devices different from the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.

Through the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described herein may be implemented by software, or may be implemented by software in combination with necessary hardware. Therefore, the technical solution according to the embodiment of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network. A number of instructions are included to cause a computing device (which may be a personal computer, server, mobile terminal, or network device, etc.) to perform a method in accordance with an embodiment of the present invention.

From the above detailed description, those skilled in the art will readily appreciate that the blockchain-based method, apparatus, and electronic device for processing financial data in accordance with embodiments of the present invention have one or more of the following advantages.

According to some embodiments, the blockchain-based method for processing financial data of the present invention can alleviate the conflict between the financial data change and the block chain execution operation through the financial data check processing and the unified encapsulation processing.

According to other embodiments, the method for processing financial data based on the blockchain of the present invention can greatly reduce the cost and time of reading and writing in different places by deploying the financial data in the chain code of the alliance chain, thereby providing simpler and more efficient. Higher consensus services, while inheriting the advantages of decentralization, reducing the pressure of monopoly.

According to some embodiments, the apparatus for processing financial data based on the blockchain of the present invention can be compatible with the diversity of financial asset data, the back end ensures the stability of the deployed chain code, and the processing and preprocessing of the financial asset data is performed. A unified and stable blockchain interaction interface is generated.

The exemplary embodiments of the present invention have been particularly shown and described above. It is to be understood that the invention is not limited to the details of the details of

In addition, the structures, the proportions, the sizes, and the like shown in the drawings of the present specification are only used to cope with the contents disclosed in the specification, and are understood and read by those skilled in the art, and are not intended to limit the conditions that can be implemented by the present disclosure. Therefore, it does not have technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should remain in the present disclosure without affecting the technical effects and the objectives that can be achieved by the present disclosure. The scope of the published technical content can be covered. In the meantime, the terms "upper", "first", "second", and "the" are used in the description, and are not intended to limit the scope of the disclosure. The change or adjustment of the relative relationship is also considered to be an area in which the present invention can be implemented without substantial changes in the technical content.

Claims

A method for processing financial data based on a blockchain, comprising:

Receive and verify financial data;

Performing hash processing on the verified financial data to generate a financial data ID;

Generating financial status data based on the financial data;

The financial data, the financial status data, and the financial data ID are packaged to generate block data and block height.
The method of claim 1 further comprising:

The financial data ID, the block data, and the block height are returned to the sender.
The method of claim 2, further comprising:

The block data is distributed in a chain code.
The method of claim 3, wherein the performing the chain code deployment on the block data comprises:

The block data is deployed in a chain code of the alliance chain.
The method of claim 1 further comprising:

Obtaining a change request, where the change request includes: a financial data ID and a second data;

Verifying the financial data ID;

After the financial data ID passes the verification, the block data is acquired by the financial data ID;

Performing a change operation on the block data by the second data, and changing a block height corresponding to the block data.
The method of claim 5, further comprising:

Obtain asset key data and asset status data through financial data;

Determining whether there is a binding relationship between the asset key data and the asset status data;

If the asset key data has a binding relationship with the asset state data, the asset key data and asset state data are updated.
The method of claim 6 further comprising:

Determining whether the asset key data and the asset status data satisfy a predetermined relationship;

If the asset key data and the asset status data do not satisfy the predetermined relationship, an error message is returned.
The method of claim 6 further comprising:

The changed block data and the changed block height are returned to the sender.
The method of claim 6 further comprising:

The changed block data is chain code deployed.
The method of claim 1 further comprising:

Obtaining a query request, where the query request includes: a financial data ID, a block height;

Acquiring the financial data by the financial data ID and the block height;

Return the financial data to the requesting party.
The method of claim 10, wherein the obtaining the financial data by the financial data ID and the block height comprises:

Determining whether the block height is empty;

If the block height is empty, the financial data corresponding to the maximum block height is acquired.
A device for processing financial data based on a blockchain, comprising:

a receiving module, configured to receive and verify financial data;

a hash module, configured to hash the verified financial data to generate a financial data ID;

a data module for generating financial status data based on the financial data;

And a packaging module, configured to encapsulate the financial data, the financial status data, and the financial data ID to generate block data and a block height.
The device of claim 12, further comprising:

a requesting module, configured to acquire a change request, where the change request includes: a financial data ID and a second data;

a verification module, configured to verify the financial data ID;

a query module, configured to acquire the block data by using the financial data ID after the financial data ID passes the verification;

And a change module, configured to perform a change operation on the block data by using the second data, and change a block height corresponding to the block data.
An electronic device, comprising:

processor;

A memory storing instructions for the processor to control the operation of any of claims 1-11.
A storage medium arranged to store program code for performing the method of any one of claims 1 to 11.