WO2021218345A1

WO2021218345A1 - Blockchain-based data processing method and apparatus, and terminal and storage medium

Info

Publication number: WO2021218345A1
Application number: PCT/CN2021/078230
Authority: WO
Inventors: 张宝; 谢丹力; 王梦寒; 朱斌; 贾牧; 褚镇飞; 刘恩科
Original assignee: 深圳壹账通智能科技有限公司
Priority date: 2020-04-29
Filing date: 2021-02-26
Publication date: 2021-11-04
Also published as: CN111639123A

Abstract

Provided are a blockchain-based data processing method and apparatus, and a terminal and a storage medium. The processing method comprises: creating an initial trade financing blockchain between an enterprise and a bank (S11); receiving a data isolation request (S12); calling a corresponding data isolation rule according to the data isolation request, and performing data isolation on an enterprise node so as to obtain a target trade financing blockchain (S13); newly creating an application store in the target trade financing blockchain, and receiving, by means of the application store, preset asset information pushed by the enterprise node (S14); calling a risk management model on a bank node to screen the preset asset information in the application store so as to obtain target asset information (S15); and sending the target asset information to the bank node (S16). By means of the present application, the data processing efficiency of a blockchain can be improved.

Description

Block chain-based data processing method, device, terminal and storage medium

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on April 29, 2020. The application number is 202010354819.3. The title of the invention is "Blockchain-based data processing methods, devices, terminals, and storage media." Incorporated in this application by reference.

Technical field

This application relates to the field of blockchain technology, and in particular to a data processing method, device, terminal, and storage medium based on blockchain.

Background technique

In the global financial transaction market, trade financing refers to the use of structured short-term financing tools by banks in the process of commodity transactions, based on assets such as inventory, prepayments, and accounts receivable in commodity transactions (such as crude oil, metals, grains, etc.) Through trade financing, it can solve the problem of shortage of funds of enterprises, maintain the normal operation of the capital chain, and build an industrial ecology of mutually beneficial coexistence and sustainable development between banks and enterprises. Blockchain networks have been increasingly used in trade finance and other financial fields due to their advantages such as distributed decentralization, no trust system, and non-tamperability.

At present, the traditional blockchain-based trade finance system needs to synchronize the transaction asset data to each node of the blockchain network in order to achieve the consistency of the stored data of each node. However, the inventor realizes that this method will vary with each other. With the continuous expansion of blockchain applications, a large amount of storage space is occupied, which leads to a long time-consuming data synchronization of each node, thereby reducing the data processing efficiency of the blockchain and increasing the maintenance cost of the blockchain.

Therefore, it is necessary to propose a data processing method based on the blockchain, which can improve the efficiency of data processing and reduce the maintenance cost of the blockchain.

Summary of the invention

In view of the above, it is necessary to propose a blockchain-based data processing method, a blockchain-based data processing device, a terminal, and a computer-readable storage medium, which can avoid synchronizing transaction asset data to all nodes on the blockchain This causes the problem of excessive data storage space usage.

The first aspect of the embodiments of the present application provides a blockchain-based data processing method, and the blockchain-based data processing method includes:

Create an initial trade financing blockchain between each enterprise and each bank, where the initial trade financing blockchain includes enterprise nodes and bank nodes;

Receive data isolation request;

According to the data isolation request, the corresponding data isolation rule is invoked to perform data isolation on the enterprise node to obtain a target trade finance blockchain, where the data isolation rule includes a split-chain data isolation rule and a cryptographic data isolation rule;

Create a new application store in the target trade financing blockchain, and receive preset asset information pushed by the enterprise node through the application store;

Call the risk control model on the bank node to filter the preset asset information in the application store to obtain target asset information;

Send the target asset information to the bank node.

The second aspect of the embodiments of the present application also provides a blockchain-based data processing device, which is applied to a trade financing processing system, and the blockchain-based data processing device includes:

A block chain creation module is used to create an initial trade financing block chain between each enterprise and each bank, wherein the initial trade financing block chain includes enterprise nodes and bank nodes;

Request receiving module, used to receive data isolation request;

The data isolation module is used to call the corresponding data isolation rule according to the data isolation request to perform data isolation on the enterprise node to obtain a target trade finance blockchain, wherein the data isolation rule includes a chain data isolation rule and a password Learn data isolation rules;

The store creation module is used to create an application store in the target trade financing blockchain, and receive preset asset information pushed by the enterprise node through the application store;

The target asset screening module is used to call the risk control model on the bank node to screen the preset asset information in the application store to obtain target asset information;

The target asset sending module is used to send the target asset information to the bank node.

The third aspect of the embodiments of the present application further provides a terminal, the terminal includes a processor, and the processor is configured to execute computer-readable instructions stored in a memory to implement the following steps:

Receive data isolation request;

Send the target asset information to the bank node.

The fourth aspect of the embodiments of the present application also provides a computer-readable storage medium. The computer-readable storage medium includes a storage data area and a storage program area. The storage data area stores data created according to the use of blockchain nodes, and stores The program area stores computer-readable instructions, where the computer-readable instructions implement the following steps when executed by a processor:

Receive data isolation request;

Send the target asset information to the bank node.

The embodiment of the application provides a blockchain-based data processing method, device, terminal, and storage medium. By isolating the nodes in the blockchain, the transaction asset data is synchronized to the relevant enterprise nodes in the blockchain The method can reduce the data storage space of the initial trade finance blockchain network, improve the efficiency of data synchronization and data query of each node, and thereby improve the data processing efficiency of the blockchain; and this application passes the target trade finance blockchain The newly-built unified application store in China provides trade financing between enterprises and banks, avoiding the situation that bank nodes need to access asset information of each enterprise node for trade financing, and can improve the efficiency of blockchain-based trade financing processing.

Description of the drawings

Fig. 1 is a flowchart of a blockchain-based data processing method provided by the first embodiment of the present application.

Fig. 2 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Fig. 3 is an exemplary functional block diagram of the terminal shown in Fig. 2.

The following specific embodiments will further illustrate this application in conjunction with the above-mentioned drawings.

Detailed ways

In order to be able to understand the above objectives, features and advantages of the application more clearly, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are set forth in order to fully understand the present application, and the described embodiments are a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terms used in the specification of the application herein are only for the purpose of describing specific embodiments, and are not intended to limit the application.

Fig. 1 is a flowchart of a blockchain-based data processing method provided by the first embodiment of the present application. The block chain-based data processing method is applied to a trade financing processing system, and the trade financing processing system is a consortium chain including enterprises and banks. As shown in Figure 1, the blockchain-based data processing method includes the following steps:

S11. Create an initial trade financing blockchain between each enterprise and each bank, where the initial trade financing blockchain includes enterprise nodes and bank nodes.

In at least one embodiment of the present application, the number of said enterprises and banks may be one or multiple. Among them, each enterprise and each bank are deployed as a blockchain node, which are called enterprise nodes and bank nodes, respectively, and cross-platform data sharing is realized between the enterprise nodes and bank nodes. Each enterprise or bank connects its own system to the interface of the blockchain platform through access and transformation, and realizes the online trade financing process.

The step of creating an initial trade financing blockchain between each enterprise and each bank includes: deploying each enterprise and each bank as a blockchain node, and forming the blockchain nodes into an initial trade financing blockchain; Based on the identity verification of the company and the bank, the access interface of the initial trade financing blockchain is allocated to the company and the bank, so that the company and the bank perform data access based on the access interface. Wherein, in the initial trade financing blockchain, the consistency of the stored data of each node can be realized, and the stored data can be synchronized to each node of the blockchain network. The transaction assets of the enterprise are stored in the initial trade financing blockchain, and the transaction assets of the enterprise include information such as the amount of the transaction asset, the balance of the transaction asset, and the direction of the transaction.

In an embodiment of the present application, the method further includes: encrypting and storing the transaction assets; when receiving a data query request from other participants in the blockchain, acquiring the participation in the data query request Party account information; obtain the preset authority corresponding to the data query request based on the participant account information, and transmit the corresponding plaintext transaction asset to the participant based on the preset authority. Wherein, the preset authority is preset, and is used to query the authority of plaintext transaction assets. Compared with the traditional blockchain design, this application increases transaction privacy and data privacy.

S12. Receive a data isolation request.

In at least one embodiment of the present application, a data isolation request is received. The data isolation request refers to a request for data isolation of a designated enterprise in the initial trade finance blockchain, and the data isolation request carries a designated The information and data isolation rules of the enterprise, wherein the data isolation rules include split-chain data isolation rules and cryptographic data isolation rules. Preferably, the number of data isolation requests received at one time may be multiple, that is, the number of corresponding designated enterprises that need to perform data isolation is multiple.

S13. Invoke the corresponding data isolation rule according to the data isolation request to perform data isolation on the enterprise node to obtain a target trade finance blockchain, where the data isolation rule includes a chain data isolation rule and a cryptographic data isolation rule .

In at least one embodiment of this application, as the initial trade finance blockchain application continues to expand (for example, more participants are introduced to join the blockchain, including government agencies, logistics platforms, regulatory agencies, etc.), if Synchronizing transaction assets to each node on the blockchain will inevitably cause the data stored in the blockchain network to rise sharply, which in turn will occupy more storage space, leading to longer data synchronization time for each node and reducing the block size. Data processing efficiency of the chain.

Therefore, in at least one embodiment of the present application, a method for data isolation of the initial trade finance blockchain to obtain a target trade finance blockchain is provided. The target trade financing blockchain includes a number of sub-chains and preset public sub-chains. In several sub-chains, the same sub-chain contains business-related enterprise nodes, and transaction assets are only synchronized to each enterprise node on the sub-chain. The preset public branch chain includes a number of enterprise nodes that are isolated using cryptographic data isolation rules, and transaction assets are only synchronized to each enterprise node on the preset public branch chain. By synchronizing transaction assets to related enterprise nodes in the blockchain, the data storage space of the initial trade financing blockchain network can be reduced, and the efficiency of data synchronization and data query by each node can be improved, thereby improving the data processing of the blockchain efficient.

Specifically, in the initial trade financing blockchain, different companies (or banks) correspond to different data isolation rules, and the corresponding data isolation rules are invoked to isolate the companies (or banks). The data isolation rules include split-chain data isolation rules and cryptographic data isolation rules. Wherein, the split-chain data isolation rule is used to achieve physical isolation between different enterprises, and the cryptographic data isolation rule is used to achieve cryptographic isolation of data between different enterprises. It is understandable that when the number of nodes in the blockchain is large, if the nodes all adopt the data isolation rules of the chain, then more chains will be generated in the blockchain, which greatly increases the maintenance cost of the blockchain. Therefore, this application adopts the method of combining the split-chain data isolation rules with the cryptographic data isolation rules. For nodes that do not need to be split-chain data isolation, data isolation is performed by cryptographic methods, which can reduce the number of split-chains in the blockchain. Quantity, reduce the maintenance cost of the blockchain.

In at least one embodiment of the present application, the step of invoking a corresponding data isolation rule according to the data isolation request to perform data isolation on the enterprise node to obtain a target trade finance blockchain includes: when the data isolation rule When it is the data isolation rule for the chain, the data isolation request is parsed to obtain the first designated enterprise; the transaction relationship between the first designated enterprise is obtained; the branch chain is created based on the transaction relationship; The enterprise node corresponding to the first designated enterprise of the association relationship is on the same sub-chain. Among them, the transaction association relationship can be determined according to the application scenario of the enterprise, and the enterprises with the same application scenario are marked as having the transaction association relationship. Illustratively, if there is an asset transaction between enterprise A and enterprise B, it is determined that enterprise A and enterprise B have a transactional relationship.

Specifically, when the data isolation rule is a split-chain data isolation rule, data isolation may be performed on the enterprise specified by the data isolation request based on a visual configuration tool. Wherein, the visual configuration tool is used to support the visualization and guided creation of branch chains, and the visual management and maintenance of branch chains. Specifically, the visual configuration tool includes a request parsing unit, a chain creation unit, and a chain result display unit. Wherein, the request parsing unit is used to analyze the data isolation request to obtain a first designated enterprise, and to obtain the transaction association relationship between the first designated enterprise; the branch chain creation unit is used to analyze the request according to the request The transaction association relationship obtained by the unit analysis creates a branch chain, and the enterprise node corresponding to the first designated enterprise with the transaction association relationship is added to the same branch chain; the branch chain result display unit is used to display the branch chain result.

In at least one embodiment of the present application, for the enterprise node corresponding to the first designated enterprise having the transaction association relationship on the same branch chain, the method further includes: receiving a transaction confirmation instruction; and according to the transaction confirmation instruction Retrieve the target enterprise node; obtain the current transaction assets of the target enterprise node and the target branch chain; transmit the current transaction assets to each enterprise node on the target branch chain.

Wherein, the transaction confirmation instruction is output based on the verification result of the transaction relationship. The trade financing processing system provided by this application supports two related transactions, hereinafter referred to as X transaction and Y transaction. When transaction X occurs, the status of this transaction can be set as "to be confirmed"; only after the execution of transaction Y of the related transaction of X transaction is completed, the status of X transaction will be updated to the "confirmed" status. After the status of the X transaction is updated to the "confirmed" status, the transaction confirmation instruction is output through the enterprise node.

In at least one embodiment of the present application, the step of invoking corresponding data isolation rules according to the data isolation request to perform data isolation on the enterprise node to obtain the target trade finance blockchain further includes: when the data isolation When the rule is a cryptographic data isolation rule, the data isolation request is parsed to obtain a second designated enterprise; a preset public branch is created; and the enterprise node corresponding to the second designated enterprise is added to the preset public branch. Wherein, the preset public chain refers to a public chain of enterprise nodes used to store data isolation rules as cryptographic data isolation rules. The number of the preset public branch chain may be one or multiple.

In at least one embodiment of the present application, the number of enterprise nodes in the target trade finance blockchain may increase. By regularly testing the number of enterprise nodes in the target trade finance blockchain, the number of new The enterprise node of the enterprise node executes the data isolation operation in time, and can update the target trade financing blockchain in time.

Specifically, the method further includes: detecting whether there is a new enterprise node in the target trade financing blockchain; when the detection result is that there is a new enterprise node in the target trade financing blockchain, determining the new enterprise node The relationship between the node and the existing enterprise node on the target trade finance blockchain; determine whether the data isolation rule corresponding to the newly added enterprise node is a branch data isolation rule; when the result of the determination is the data corresponding to the newly added enterprise node When the isolation rule is a split-chain data isolation rule, the newly-added enterprise node is added to the corresponding split-chain according to the association relationship; when the result of the determination is that the data isolation rule corresponding to the newly-added enterprise node is a cryptographic data isolation rule, The newly added enterprise node is added to the preset public branch chain.

Wherein, the step of detecting whether there are new enterprise nodes in the target trade financing blockchain includes: obtaining the number of enterprise nodes in the original target trade financing blockchain; detecting whether the number of enterprise nodes has increased; when the detection result is When the number of enterprise nodes increases, obtain the corresponding newly added enterprise nodes.

The step of determining the association relationship between the newly added enterprise node and the existing enterprise node on the target trade financing blockchain includes: obtaining the application scenario corresponding to the newly added enterprise node; in the target trade financing chain Obtaining the branch chain information corresponding to the application scenario; determine the enterprise node on the branch chain according to the branch chain information, and determine the association relationship between the newly added enterprise node and the enterprise node on the branch chain.

Illustratively, suppose that the target trade finance blockchain contains three enterprise nodes A, B and C, the new enterprise node is D, and it is determined that there is an association relationship between the new enterprise node D and enterprise nodes A and B, and There is no association relationship between enterprise nodes C. When the result of the determination is that the data isolation rule corresponding to the newly added enterprise node is the data isolation rule for the chain, the chain is created separately for D-A and D-B. When the result of the determination is that the data isolation rule corresponding to the newly added enterprise node is a cryptographic data isolation rule, the newly added enterprise node D is added to the preset public branch chain.

S14. Create a new application store in the target trade financing blockchain, and receive preset asset information pushed by the enterprise node through the application store.

In at least one embodiment of the application, in the target trade finance blockchain, a new application store is created, and the application store is a trading place on the target trade finance blockchain, and the enterprise pushes preset asset information Go to the application store to seek more financing from the bank, and the bank can obtain asset information of each enterprise through the application store. The number of the application store can be one, or the corresponding number can be set according to the number of nodes in the blockchain.

Specifically, the step of establishing a new application store and receiving preset asset information pushed by the enterprise node through the application store includes: constructing a common module based on each enterprise node of the target trade financing blockchain; In the public module, the preset asset information pushed by each enterprise node is received.

It is understandable that companies store assets that need to seek more bank financing in the app store, and the bank determines the financing target by looking at the assets in the app store. By creating a unified application store in the target trade financing blockchain for trade financing between enterprises and banks, it avoids the situation that bank nodes need to access asset information of each enterprise node for trade financing, and can improve blockchain-based The efficiency of trade finance processing.

S15. Invoke the risk control model on the bank node to screen the preset asset information in the application store to obtain target asset information.

In at least one embodiment of the present application, the risk control model on the bank node is called to screen the preset asset information in the application store to obtain target asset information. Among them, the asset variables that the risk control model needs to consider include: total asset amount, asset maturity, estimated annual cash flow, financing interest rate, non-performing rate and other information. Different bank nodes correspond to different risk control models, and different bank nodes store their own preset risk control models on the blockchain node.

Specifically, there are many ways to call the risk control model on the bank node to filter the preset asset information in the application store. For example, the preset asset information in the application store can be checked in real time or regularly The risk control model is screened to obtain target asset information; it is also possible to use a pre-trained neural network model to input the preset asset information in the application store into the neural network model to obtain target asset information, which is not limited here.

S16. Send the target asset information to the bank node.

In at least one embodiment of the present application, the target asset information is sent to the bank node, and the bank node completes trade financing with the enterprise according to the target asset information.

The block chain-based data processing method provided by the embodiments of the present application can also be applied in the field of smart government affairs, thereby promoting the construction of smart cities. This application creates an initial trade financing block chain between each enterprise and each bank, where the initial trade financing block chain includes enterprise nodes and bank nodes; receives a data isolation request; and calls the corresponding data isolation request according to the data isolation request. The data isolation rule performs data isolation on the enterprise node to obtain a target trade finance block chain, wherein the data isolation rule includes a chain data isolation rule and a cryptographic data isolation rule; in the target trade finance block chain , Create a new application store, and receive the preset asset information pushed by the enterprise node through the application store; call the risk control model on the bank node to filter the preset asset information in the application store to obtain the target asset Information; sending the target asset information to the bank node, the economic indicators involved in this application are important indicators for macroeconomic analysis, and the analysis results provide an important reference/basis for macroeconomic research.

Using this application, by isolating the nodes in the blockchain and synchronizing the transaction asset data to the relevant enterprise nodes in the blockchain, the data storage space of the initial trade financing blockchain network can be reduced, and each node can be improved Perform data synchronization and data query efficiency, thereby improving the data processing efficiency of the blockchain; adopt the method of combining data isolation and cryptographic data isolation, and for nodes that do not need to perform data isolation, use cryptographic methods Data isolation can reduce the number of sub-chains in the blockchain and reduce the maintenance cost of the blockchain; by creating a unified application store in the target trade financing blockchain for trade financing between enterprises and banks, avoid Bank nodes need to access the asset information of each enterprise node for trade financing, which can improve the efficiency of blockchain-based trade financing processing.

The above is a detailed description of the method provided by the embodiment of the present application. According to different requirements, the execution order of the blocks in the flowchart shown can be changed, and some blocks can be omitted. The terminal 1 provided in the embodiment of the present application will be described below.

FIG. 2 is a schematic structural diagram of a terminal according to an embodiment of the present application. As shown in FIG. 2, the terminal 1 includes a memory 10 in which the blockchain-based data processing device 100 is stored. The terminal 1 may be an electronic device with functions of data processing, analysis, program execution, and display, such as a computer, a tablet computer, or a personal digital assistant. The block chain-based data processing device 100 can create an initial trade financing block chain between each enterprise and each bank, where the initial trade financing block chain includes enterprise nodes and bank nodes; receiving data isolation requests; According to the data isolation request, the corresponding data isolation rule is invoked to isolate the data of the enterprise node to obtain the target trade finance blockchain, wherein the data isolation rule includes the data isolation rule of the chain and the cryptographic data isolation rule; In the target trade financing blockchain, a new application store is created, and the preset asset information pushed by the enterprise node is received through the application store; Suppose asset information is screened to obtain target asset information; and the target asset information is sent to the bank node. Using this application, by isolating the nodes in the blockchain and synchronizing the transaction asset data to the relevant enterprise nodes in the blockchain, the data storage space of the initial trade financing blockchain network can be reduced, and each node can be improved Perform data synchronization and data query efficiency, thereby improving the data processing efficiency of the blockchain; adopt the method of combining data isolation and cryptographic data isolation, and for nodes that do not need to perform data isolation, use cryptographic methods Data isolation can reduce the number of sub-chains in the blockchain and reduce the maintenance cost of the blockchain; by creating a unified application store in the target trade financing blockchain for trade financing between enterprises and banks, avoid Bank nodes need to access the asset information of each enterprise node for trade financing, which can improve the efficiency of blockchain-based trade financing processing.

In this embodiment, the terminal 1 may further include a display screen 20 and a processor 30. The memory 10 and the display screen 20 may be electrically connected to the processor 30 respectively.

The memory 10 may be different types of storage devices for storing various types of data. For example, it can be the memory or internal memory of the terminal 1, or a memory card that can be externally connected to the terminal 1, such as flash memory, SM card (Smart Media Card), SD card (Secure Digital Card, secure digital card) Wait. In addition, the memory 10 may include non-volatile and volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a Secure Digital (SD) card, a flash memory card ( Flash Card), at least one magnetic disk storage device, flash memory device, or other storage device. The memory 10 is used to store various types of data, for example, various types of applications (Applications) installed in the terminal 1, and data set and obtained by applying the above-mentioned blockchain-based data processing method.

The display screen 20 is installed in the terminal 1 for displaying information.

The processor 30 is configured to execute the blockchain-based data processing method and various software installed in the terminal 1, such as an operating system and application display software. The processor 30 includes, but is not limited to, a processor (Central Processing Unit, CPU), a Micro Controller Unit (Micro Controller Unit, MCU) and other devices for interpreting computer instructions and processing data in computer software.

The block chain-based data processing device 100 may include one or more modules, and the one or more modules are stored in the memory 10 of the terminal 1 and configured to be composed of one or more processors (this The implementation manner is executed by a processor 30) to complete the embodiment of the present application. 3, the blockchain-based data processing device 100 may include a blockchain creation module 101, a request receiving module 102, a data isolation module 103, a store creation module 104, a target asset screening module 105, and a target asset sending module. Module 106. The modules referred to in the embodiments of the present application may be computer-readable instruction segments that complete specific functions, and are more suitable for describing the execution process of software in the processor 30 than a program.

It is understandable that, corresponding to the various implementations in the above-mentioned blockchain-based data processing method, the blockchain-based data processing device 100 may include some or all of the functional modules shown in FIG. The functions will be described in detail below. It should be noted that the same nouns, related nouns, and specific explanations in the above implementations of the blockchain-based data processing method can also be applied to the following introduction to the functions of each module. To save space and avoid repetition, I won’t repeat them here.

The block chain creation module 101 can be used to create an initial trade financing block chain between each enterprise and each bank, where the initial trade financing block chain includes enterprise nodes and bank nodes.

The request receiving module 102 may be used to receive a data isolation request.

The data isolation module 103 may be configured to call the corresponding data isolation rule to isolate the enterprise node data according to the data isolation request to obtain the target trade finance blockchain, where the data isolation rule includes the chain data isolation rule and Cryptographic data isolation rules.

The store creation module 104 may be used to create an application store in the target trade financing blockchain, and receive preset asset information pushed by the enterprise node through the application store.

The target asset screening module 105 may be used to call the risk control model on the bank node to filter preset asset information in the application store to obtain target asset information.

The target asset sending module 106 may be used to send the target asset information to the bank node.

The embodiments of the present application also provide a computer-readable storage medium on which computer-readable instructions are stored, and when the computer-readable instructions are executed by the processor 30, the blockchain-based data processing in any of the above embodiments is implemented. Method steps.

Further, the computer-readable storage medium may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, an application program required by at least one function, etc.; the storage data area may store Data created by the use of nodes, etc.

If the block chain-based data processing device 100/terminal1/terminal integrated module/unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium . Based on this understanding, this application implements all or part of the processes in the above-mentioned implementation methods, and can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the program is executed by the processor 30, the steps of the foregoing method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms. The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory) ), random access memory, etc.

Exemplarily, the computer program may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 10 and executed by the processor 30 to complete the present invention. Application. The one or more modules/units may be a series of computer-readable instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program in the terminal 1. For example, the computer program can be divided into a blockchain creation module 101, a request receiving module 102, a data isolation module 103, a store creation module 104, a target asset screening module 105, and a target asset sending module 106.

The so-called processor 30 may be a central processing unit (Central Processing Unit, CPU), other general processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The processor 30 is the control center of the blockchain-based data processing device 100/terminal 1, using various interfaces Connect the entire block chain-based data processing device 100/each part of the terminal 1 with the line.

The memory 10 is used to store the computer program and/or module, and the processor 30 runs or executes the computer program and/or module stored in the memory 10 and calls the data stored in the memory 10, The various functions of the blockchain-based data processing device 100/terminal 1 are realized. The memory 10 may mainly include a program storage area and a data storage area, where the program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; the storage data area may Data and the like created in accordance with the use of the terminal 1 are stored.

The blockchain referred to in this application is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain, essentially a decentralized database, is a series of data blocks associated with cryptographic methods. Each data block contains a batch of network transaction information for verification. The validity of the information (anti-counterfeiting) and the generation of the next block. The blockchain can include the underlying platform of the blockchain, the platform product service layer, and the application service layer.

In the several specific implementation manners provided in this application, it should be understood that the disclosed terminal and method may be implemented in other ways. For example, the system implementation described above is only illustrative. For example, the division of the modules is only a logical function division, and there may be other division modes in actual implementation.

For those skilled in the art, it is obvious that the embodiments of the present application are not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the embodiments of the present application. example. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the embodiments of the present application is defined by the appended claims rather than the above description, and therefore it is intended to fall on All changes within the meaning and scope of equivalent elements of the claims are included in the embodiments of the present application. Any reference signs in the claims should not be regarded as limiting the claims involved. Multiple units, modules or devices stated in this application may also be implemented by the same unit, module or device through software or hardware.

The above implementation manners are only used to illustrate the technical solutions of the embodiments of the present application and not to limit them. Although the embodiments of the present application are described in detail with reference to the above preferred implementation manners, those of ordinary skill in the art should understand that the technical solutions of the embodiments of the present application can be compared. Modifications or equivalent replacements of the solutions should not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A block chain-based data processing method is applied to a trade financing processing system, wherein the block chain-based data processing method includes:

Create an initial trade financing blockchain between each enterprise and each bank, where the initial trade financing blockchain includes enterprise nodes and bank nodes;

Receive data isolation request;

According to the data isolation request, the corresponding data isolation rule is invoked to perform data isolation on the enterprise node to obtain a target trade finance blockchain, where the data isolation rule includes a split-chain data isolation rule and a cryptographic data isolation rule;

Create a new application store in the target trade financing blockchain, and receive preset asset information pushed by the enterprise node through the application store;

Call the risk control model on the bank node to filter the preset asset information in the application store to obtain target asset information;

Send the target asset information to the bank node.
The block chain-based data processing method according to claim 1, wherein the step of invoking corresponding data isolation rules according to the data isolation request to perform data isolation on the enterprise node to obtain a target trade financing block chain include:

When the data isolation rule is a split-chain data isolation rule, parse the data isolation request to obtain the first designated enterprise;

Acquiring the transaction association relationship between the first designated enterprise;

Create a branch chain based on the transaction association relationship;

Add the enterprise node corresponding to the first designated enterprise with the transaction association relationship to the same branch chain.
The blockchain-based data processing method according to claim 2, wherein the method further comprises:

Receive transaction confirmation instructions;

Call the target enterprise node according to the transaction confirmation instruction;

Acquiring the current transaction assets and target chain of the target enterprise node;

The current transaction assets are transmitted to each enterprise node on the target branch chain.
The block chain-based data processing method according to claim 1, wherein the step of invoking corresponding data isolation rules according to the data isolation request to perform data isolation on the enterprise node to obtain a target trade financing block chain Also includes:

When the data isolation rule is a cryptographic data isolation rule, parse the data isolation request to obtain a second designated enterprise;

Create a new default public branch chain;

Add the enterprise node corresponding to the second designated enterprise to the preset public branch chain.
The blockchain-based data processing method according to claim 1, wherein the method further comprises:

Detecting whether there is a new enterprise node in the target trade financing blockchain;

When the detection result is that there is a new enterprise node in the target trade finance blockchain, determine the association relationship between the new enterprise node and the existing enterprise node on the target trade finance blockchain;

Determine whether the data isolation rule corresponding to the new enterprise node is the data isolation rule of the branch chain;

When the result of the determination is that the data isolation rule corresponding to the newly added enterprise node is the data isolation rule of the branch chain, the newly added enterprise node is added to the corresponding branch chain according to the association relationship;

When the result of the determination is that the data isolation rule corresponding to the newly added enterprise node is a cryptographic data isolation rule, the newly added enterprise node is added to the preset public branch chain.
The block chain-based data processing method according to claim 5, wherein the step of determining the association relationship between the newly added enterprise node and the existing enterprise node on the target trade financing blockchain comprises:

Acquiring the application scenario corresponding to the newly added enterprise node;

Obtaining chain-link information corresponding to the application scenario in the target trade financing chain;

Determine the enterprise node on the branch chain according to the branch chain information, and determine the association relationship between the newly added enterprise node and the enterprise node on the branch chain.
The block chain-based data processing method according to claim 1, wherein the step of establishing a new application store and receiving preset asset information pushed by the enterprise node through the application store comprises:

Construct a public module based on each enterprise node of the target trade finance blockchain;

In the public module, preset asset information pushed by each enterprise node is received.
A block chain-based data processing device is applied to a trade financing processing system, wherein the block chain-based data processing device includes:

A block chain creation module is used to create an initial trade financing block chain between each enterprise and each bank, wherein the initial trade financing block chain includes enterprise nodes and bank nodes;

Request receiving module, used to receive data isolation request;

The data isolation module is used to call the corresponding data isolation rule according to the data isolation request to perform data isolation on the enterprise node to obtain a target trade finance blockchain, wherein the data isolation rule includes a chain data isolation rule and a password Learn data isolation rules;

The store creation module is used to create an application store in the target trade financing blockchain, and receive preset asset information pushed by the enterprise node through the application store;

The target asset screening module is used to call the risk control model on the bank node to screen the preset asset information in the application store to obtain target asset information;

The target asset sending module is used to send the target asset information to the bank node.
A terminal, wherein the terminal includes a processor configured to execute computer-readable instructions stored in a memory to implement the following steps:

Create an initial trade financing blockchain between each enterprise and each bank, where the initial trade financing blockchain includes enterprise nodes and bank nodes;

Receive data isolation request;

According to the data isolation request, the corresponding data isolation rule is invoked to perform data isolation on the enterprise node to obtain a target trade finance blockchain, where the data isolation rule includes a split-chain data isolation rule and a cryptographic data isolation rule;

Create a new application store in the target trade financing blockchain, and receive preset asset information pushed by the enterprise node through the application store;

Call the risk control model on the bank node to filter the preset asset information in the application store to obtain target asset information;

Send the target asset information to the bank node.
The terminal according to claim 9, wherein the processor executes the computer-readable instructions to implement the data isolation of the enterprise node by invoking the corresponding data isolation rule according to the data isolation request to obtain the target trade When financing the blockchain, include:

When the data isolation rule is a split-chain data isolation rule, parse the data isolation request to obtain the first designated enterprise;

Acquiring the transaction association relationship between the first designated enterprise;

Create a branch chain based on the transaction association relationship;

Add the enterprise node corresponding to the first designated enterprise with the transaction association relationship to the same branch chain.
The terminal according to claim 10, wherein the execution of the computer-readable instructions by the processor is further used to implement the following steps:

Receive transaction confirmation instructions;

Call the target enterprise node according to the transaction confirmation instruction;

Acquiring the current transaction assets and target chain of the target enterprise node;

The current transaction assets are transmitted to each enterprise node on the target branch chain.
The terminal according to claim 9, wherein the processor executes the computer-readable instructions to implement the data isolation of the enterprise node by invoking the corresponding data isolation rule according to the data isolation request to obtain the target trade When financing the blockchain, include:

When the data isolation rule is a cryptographic data isolation rule, parse the data isolation request to obtain a second designated enterprise;

Create a new default public branch chain;

Add the enterprise node corresponding to the second designated enterprise to the preset public branch chain.
The terminal according to claim 9, wherein the execution of the computer-readable instructions by the processor is further used to implement the following steps:

Detecting whether there is a new enterprise node in the target trade financing blockchain;

When the detection result is that there is a new enterprise node in the target trade finance blockchain, determine the association relationship between the new enterprise node and the existing enterprise node on the target trade finance blockchain;

Determine whether the data isolation rule corresponding to the new enterprise node is the data isolation rule of the branch chain;

When the result of the determination is that the data isolation rule corresponding to the newly added enterprise node is the data isolation rule of the branch chain, the newly added enterprise node is added to the corresponding branch chain according to the association relationship;

When the result of the determination is that the data isolation rule corresponding to the newly added enterprise node is a cryptographic data isolation rule, the newly added enterprise node is added to the preset public branch chain.
The terminal according to claim 13, wherein the processor executes the computer-readable instructions to implement the determination of the association relationship between the newly added enterprise node and the existing enterprise node on the target trade financing blockchain When, including:

Acquiring the application scenario corresponding to the newly added enterprise node;

Obtaining chain-link information corresponding to the application scenario in the target trade financing chain;

Determine the enterprise node on the branch chain according to the branch chain information, and determine the association relationship between the newly added enterprise node and the enterprise node on the branch chain.
The terminal according to claim 9, wherein, when the processor executes the computer-readable instructions to implement the new application store, and receives preset asset information pushed by the enterprise node through the application store, it includes :

Construct a public module based on each enterprise node of the target trade finance blockchain;

In the public module, preset asset information pushed by each enterprise node is received.
A computer-readable storage medium, the computer-readable storage medium includes a storage data area and a storage program area, the storage data area stores data created according to the use of a blockchain node, and the storage program area stores computer readable instructions, Wherein, when the computer-readable instruction is executed by the processor, the following steps are implemented:

Create an initial trade financing blockchain between each enterprise and each bank, where the initial trade financing blockchain includes enterprise nodes and bank nodes;

Receive data isolation request;

According to the data isolation request, the corresponding data isolation rule is invoked to perform data isolation on the enterprise node to obtain a target trade finance blockchain, where the data isolation rule includes a split-chain data isolation rule and a cryptographic data isolation rule;

Create a new application store in the target trade financing blockchain, and receive preset asset information pushed by the enterprise node through the application store;

Call the risk control model on the bank node to filter the preset asset information in the application store to obtain target asset information;

Send the target asset information to the bank node.
The computer-readable storage medium according to claim 16, wherein the computer-readable instructions are executed by a processor to implement the data isolation of the enterprise node by invoking a corresponding data isolation rule according to the data isolation request, When getting the target trade finance blockchain, include:

When the data isolation rule is a split-chain data isolation rule, parse the data isolation request to obtain the first designated enterprise;

Acquiring the transaction association relationship between the first designated enterprise;

Create a branch chain based on the transaction association relationship;

Add the enterprise node corresponding to the first designated enterprise with the transaction association relationship to the same branch chain.
The computer-readable storage medium according to claim 17, wherein the computer-readable instructions are further used to implement the following steps when executed by the processor:

Receive transaction confirmation instructions;

Call the target enterprise node according to the transaction confirmation instruction;

Acquiring the current transaction assets and target chain of the target enterprise node;

The current transaction assets are transmitted to each enterprise node on the target branch chain.
The computer-readable storage medium according to claim 16, wherein the computer-readable instructions are executed by a processor to implement the data isolation of the enterprise node by invoking a corresponding data isolation rule according to the data isolation request, When getting the target trade finance blockchain, include:

When the data isolation rule is a cryptographic data isolation rule, parse the data isolation request to obtain a second designated enterprise;

Create a new default public branch chain;

Add the enterprise node corresponding to the second designated enterprise to the preset public branch chain.
The computer-readable storage medium according to claim 16, wherein the computer-readable instructions are further used to implement the following steps when executed by the processor:

Detecting whether there is a new enterprise node in the target trade financing blockchain;

When the detection result is that there is a new enterprise node in the target trade finance blockchain, determine the association relationship between the new enterprise node and the existing enterprise node on the target trade finance blockchain;

Determine whether the data isolation rule corresponding to the new enterprise node is the data isolation rule of the branch chain;

When the result of the determination is that the data isolation rule corresponding to the newly added enterprise node is the data isolation rule of the branch chain, the newly added enterprise node is added to the corresponding branch chain according to the association relationship;

When the result of the determination is that the data isolation rule corresponding to the newly added enterprise node is a cryptographic data isolation rule, the newly added enterprise node is added to the preset public branch chain.