CN114581099A - Blockchain-based data collaboration method, device, device and storage medium - Google Patents

Abstract

The application relates to a data collaboration method, a data collaboration device, data collaboration equipment and a storage medium based on a block chain, and relates to the field of block chains. The data collaboration method based on the block chain is applied to a block chain platform, the block chain platform comprises a main chain and a side chain, and the method comprises the following steps: acquiring a service request initiated by a first user node through a side chain, wherein the service request comprises service data; calling a first intelligent contract through a side chain, determining that the execution of the service request is completed according to the service data, and acquiring transaction information recorded in the execution process of the service request, wherein the transaction information comprises an identifier of a first user node; calling a second intelligent contract through the side chain, determining that the transaction information is synchronized to the main chain, and then sending the transaction information to the main chain; transaction information is stored through the backbone. The method and the device are used for solving the problem that the transaction information cannot be traced.

Description

Blockchain-based data collaboration method, device, device and storage medium

technical field

The present application relates to the field of blockchain, and in particular, to a method, device, device and storage medium for data collaboration based on blockchain.

Background technique

At present, the state-owned enterprise's capital supervision is carried out by the state-owned enterprise to fill in the information on its own, and it is impossible to trace the entire process of the information. The information is likely to be subjectively beautified, and its authenticity is difficult to verify. Moreover, the information collection requires the management personnel of state-owned enterprises to input by themselves, and the collection efficiency is low and the accuracy is low. Multi-level regulatory agencies also need to carry out hierarchical information reporting and information processing.

SUMMARY OF THE INVENTION

This application provides a blockchain-based data collaboration method, device, device and storage medium to solve the problem that transaction information cannot be traced.

In the first aspect, the embodiments of this application provide a blockchain-based data collaboration method, which is applied to a blockchain platform, where the blockchain platform includes a main chain and a side chain, and the method includes:

Acquire a service request initiated by the first user node through the side chain, wherein the service request includes service data;

The first smart contract is invoked through the side chain, and according to the service data, it is determined that the execution of the service request is completed, and transaction information recorded during the execution of the service request is obtained, wherein the transaction information includes the first smart contract. an identifier of the user node;

The second smart contract is invoked through the side chain, and after it is determined that the transaction information is synchronized to the main chain, the transaction information is sent to the main chain;

The transaction information is stored through the main chain.

Optionally, after storing the transaction information through the main chain, the method further includes:

Obtain the transaction information query request initiated by the second user node through the main chain, wherein the transaction information query request includes the identifier of the first user node;

According to the identification of the first user node, the transaction information corresponding to the identification of the first user node is obtained from the main chain.

Optionally, the blockchain platform further includes a relay chain, a first cross-chain gateway and a second cross-chain gateway;

The sending the transaction information to the main chain includes:

sending the transaction information to the relay chain through the first cross-chain gateway;

After determining through the relay chain that the sender of the transaction information is in the blockchain platform, send the transaction information to the first cross-chain gateway through the relay chain;

sending the transaction information to the second cross-chain gateway through the first cross-chain gateway;

The transaction information is sent to the main chain through the second cross-chain gateway.

Optionally, before storing the transaction information through the main chain, the method further includes:

The third smart contract is invoked through the main chain, and it is determined that the transaction information is correct.

Optionally, the number of the main chain is one, and the number of the side chain is at least one.

Optionally, storing the transaction information through the main chain includes:

The transaction information is stored in the block corresponding to the identifier of the first user node through the main chain.

Optionally, after the transaction information is stored in the block corresponding to the identifier of the first user node through the main chain, the method further includes:

The evaluation information of the first user node is acquired according to the amount of data stored in the block corresponding to the identifier of the first user node.

In the second aspect, an embodiment of the present application provides a blockchain-based data collaboration device configured on a blockchain platform, where the blockchain platform includes a main chain and a side chain, and the device includes:

a first obtaining module, configured to obtain a service request initiated by a first user node through the side chain, wherein the service request includes service data;

The first calling module is used to call the first smart contract through the side chain, determine that the execution of the service request is completed according to the service data, and obtain transaction information recorded during the execution of the service request, wherein the The transaction information includes the identifier of the first user node;

A second calling module, configured to call a second smart contract through the side chain, and after determining to synchronize the transaction information to the main chain, send the transaction information to the main chain;

A processing module, configured to store the transaction information through the main chain.

In a third aspect, an embodiment of the present application provides an electronic device, including: a processor, a memory, and a communication bus, wherein the processor and the memory communicate with each other through the communication bus;

the memory for storing computer programs;

The processor is configured to execute the program stored in the memory to implement the blockchain-based data collaboration method described in the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the blockchain-based data collaboration method described in the first aspect is implemented.

Compared with the prior art, the above technical solutions provided by the embodiments of the present application have the following advantages: the method provided by the embodiments of the present application is applied to a blockchain platform, and the blockchain platform includes a main chain and a side chain, which are obtained through the side chain. The service request initiated by the first user node, wherein the service request includes service data, the first smart contract is invoked through the side chain, and according to the service data, it is determined that the execution of the service request is completed, and the transaction information recorded during the execution of the service request is obtained, wherein , the transaction information includes the identity of the first user node, and the second smart contract is invoked through the side chain. After determining that the transaction information is synchronized to the main chain, the transaction information is sent to the main chain, and the transaction information is stored through the main chain. In this method, the business request execution process of the first user node is performed on the side chain of the blockchain platform, the transaction information can be stored on the side chain of the blockchain platform, and the transaction information can be sent to the main chain through the side chain, and the transaction information can be sent to the main chain through the side chain. The main chain stores transaction information, and the traceability and immutability of the blockchain can ensure the authenticity of the transaction information stored in the main chain and solve the problem that transaction information cannot be traced.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. In other words, on the premise of no creative labor, other drawings can also be obtained from these drawings.

1 is a schematic flowchart of a method for data collaboration based on blockchain in an embodiment of the application;

FIG. 2 is a schematic structural diagram of a blockchain platform in a specific embodiment of the application;

3 is a schematic flowchart of a method for sending transaction information to the main chain in a specific embodiment of the application;

4 is a schematic structural diagram of a blockchain system in a specific embodiment of the application;

5 is a schematic flowchart of a method for data collaboration based on blockchain in a specific embodiment of the present application;

6 is a schematic structural diagram of a blockchain-based data coordination device in an embodiment of the application;

FIG. 7 is a schematic structural diagram of an electronic device in an embodiment of the present application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

In the embodiment of this application, a data collaboration method based on blockchain is provided, which is applied to a blockchain platform. The blockchain platform includes a main chain and a side chain. As shown in FIG. 1 , a data collaboration method based on blockchain The method process mainly includes:

Step 101: Acquire a service request initiated by a first user node through a side chain, wherein the service request includes service data.

The first user node is a supervised node, for example, the first user node is a state-owned enterprise A.

The business request may be a request for fund allocation, an investment request, a bond issuance request, and other requests involving capital flow. In the embodiment of the present application, the service request is a fund appropriation request as an example for description, but it is not limited that the service request is only a fund appropriation request.

When the business request is a fund allocation request, the business data may include the identifiers of the transaction parties in the blockchain platform and the account addresses of the transaction parties in the bank.

The side chain can directly connect to the application system where each supervised node is located, and directly retrieve business requests from the application system, instead of relying on manual reporting. Through the application system synchronization, the synchronization content and time are all uploaded to the chain, and the reporting efficiency and accuracy are high. Guaranteed and traceable to the source of the information.

In step 102, the first smart contract is invoked through the side chain, according to the service data, it is determined that the execution of the service request is completed, and transaction information recorded during the execution of the service request is obtained, wherein the transaction information includes the identifier of the first user node.

The first smart contract can be a fund allocation confirmation smart contract, and each node on the side chain calculates whether the transaction has been completed and whether the bank account balances of both parties are correct. If more than 2/3 of the nodes agree that the transaction has been completed and the bank account balances of both parties are correct, it is determined that the execution of the business request is completed. If the transaction is not completed, or the bank account balance of both parties is wrong, the transaction failure information and the reason for the transaction failure will be fed back to the first user node.

The transaction information may include information such as the identification of the two parties to the transaction in the blockchain platform, the account addresses of the two parties in the bank, the time when the transaction is completed, and the amount of the transaction.

In step 103, the second smart contract is invoked through the side chain, and after it is determined that the transaction information is synchronized to the main chain, the transaction information is sent to the main chain.

The second smart contract can be a business data synchronization smart contract, and each node on the side chain calculates and confirms the transaction result and submission status, and determines the address of the main chain. If more than 2/3 of the nodes agree to synchronize the transaction information to the main chain, it is determined to synchronize the transaction information to the main chain.

In a specific embodiment, as shown in FIG. 2 , the blockchain platform 1 includes a main chain 11 , a side chain 12 , a relay chain 13 , a first cross-chain gateway 14 and a second cross-chain gateway 15 .

The side chain 12 is connected to the first end of the first cross-chain gateway 14 , the second end of the first cross-chain gateway 14 is connected to the first end of the relay chain 13 , and the second end of the relay chain 13 is connected to the second cross-chain gateway 15 The first end of the second cross-chain gateway 15 is connected to the main chain 11 .

The communication between the main chain and the side chain is completed in a cross-chain manner. In the case of ensuring account permissions, partition storage is performed, and data isolation can be achieved between different chains.

In a specific embodiment, as shown in Figure 3, sending transaction information to the main chain includes:

In step 301, the transaction information is sent to the relay chain through the first cross-chain gateway through the side chain.

Step 302, after determining through the relay chain that the sender of the transaction information is in the blockchain platform, send the transaction information to the first cross-chain gateway through the relay chain.

The relay chain determines the sender of the transaction information. In the blockchain platform, the source of the transaction information can be determined to be credible.

If it is determined through the relay chain that the sender of the transaction information is not in the blockchain platform, the transaction is considered to be an illegal transaction, the transaction processing result is rolled back, and the return "The destination chain cannot be reached, please re-direct the routing", here the The destination chain is the main chain.

Step 303: Send the transaction information to the second cross-chain gateway through the first cross-chain gateway.

The first cross-chain gateway searches according to the address of the main chain. After finding the main chain, the transaction information is sent to the second cross-chain gateway connected to the main chain.

In step 304, the transaction information is sent to the main chain through the second cross-chain gateway.

Before sending the transaction information to the main chain through the second cross-chain gateway, confirm through the second cross-chain gateway whether the transaction is endorsed by the side chain. The second cross-chain gateway sends transaction information to the main chain.

Step 104, store transaction information through the main chain.

In a specific embodiment, before storing the transaction information through the main chain, the data collaboration method based on the blockchain further includes: calling a third smart contract through the main chain to determine that the transaction information is correct.

The third smart contract, which can be a transaction verification smart contract, calculates whether the transaction information of this transaction is correct through each node on the main chain. You can also execute the transfer review contract again by connecting to a high-level bank. If it is determined that the transaction information is correct, the transaction information is stored through the main chain to achieve cross-chain synchronization of transaction information.

In a specific embodiment, after the transaction information is stored through the main chain, the blockchain-based data collaboration method further includes: obtaining, through the main chain, a transaction information query request initiated by the second user node, wherein the transaction information query request includes the first transaction information query request. The identifier of the user node; according to the identifier of the first user node, the transaction information corresponding to the identifier of the first user node is obtained from the main chain.

The second user node is a supervisory node.

The second user node can obtain transaction information corresponding to the identification of the first user node from the main chain through the identification of the first user node. Realize the supervision of the transaction information of the first user node.

In a specific embodiment, the number of main chains is one, and the number of side chains is at least one.

Each side chain serves different business applications. For example, the first side chain is connected to the large-amount fund dynamic supervision system, the second side chain is connected to the supervision and accountability system, the third side chain is connected to the investment management system, and the fourth side chain is connected to the development system. Debt management system.

The main chain serves each supervision node and is used to obtain transaction information for supervision.

In a specific embodiment, as shown in FIG. 4 , it is a schematic structural diagram of a blockchain system. The blockchain system includes a blockchain platform 1 , a first user node 2 and a second user node 3 . The blockchain platform 1 includes a main chain 11 and a side chain 12 . The number of the main chain 11 is one, and the number of the side chains 12 is at least one. Only three side chains 12 are shown in FIG. 4 , and the number of side chains 12 may be one, two, four, or more as required, and the present application does not limit the number of side chains 12 . The first user node 2 is connected to the side chain 12 , the side chain 12 is connected to the main chain 11 , and the main chain 11 is connected to the second user node 3 .

In a specific embodiment, storing the transaction information through the main chain includes: storing the transaction information in the block corresponding to the identifier of the first user node through the main chain.

On the main chain, according to the identification of each first user node, the transaction information can be stored in the block corresponding to the identification of the first user node, so as to ensure that the transaction information in the entire transaction process is stored in the blockchain platform, which is convenient for the third The query of the transaction information corresponding to the identifier of a user node ensures that the transaction information will not be tampered with and can be traced back.

In a specific embodiment, after the transaction information is stored in the block corresponding to the identifier of the first user node through the main chain, the blockchain-based data collaboration method further includes: storing the transaction information in the block corresponding to the identifier of the first user node according to the block chain. The data volume of the first user node is obtained, and the evaluation information of the first user node is obtained.

The communication between the main chain and the side chain can solve the problem of data sharing, but there is a lack of a corresponding and complete incentive mechanism to promote the business requests and transaction information of each supervised node. According to the amount of data stored in the block corresponding to the identifier of the first user node, the evaluation information of the first user node is acquired, which increases the incentive mechanism. For example, when the amount of data stored in the block corresponding to the identifier of the first user node increases, it indicates that the first user node has executed the business request through the blockchain platform and stored the transaction information in the main chain, which is convenient for supervision. The evaluation information of the first user node is set to a higher score. If the amount of data stored in the block corresponding to the identifier of the first user node is small, it indicates that the first user node rarely executes business requests through the blockchain platform, which is inconvenient for supervision. The evaluation information of the first user node is set as lower rating.

In a specific embodiment, a blockchain-based data collaboration method is provided, which is applied to a blockchain platform. The blockchain platform includes a main chain, a side chain, a relay chain, a first cross-chain gateway and a second cross-chain gateway. chain gateway, the side chain is connected to the first end of the first cross-chain gateway, the second end of the first cross-chain gateway is connected to the first end of the relay chain, and the second end of the relay chain is connected to the first end of the second cross-chain gateway The second end of the second cross-chain gateway is connected to the main chain. As shown in Figure 5, the method flow of blockchain-based data collaboration includes:

Step 501: Obtain a fund allocation request initiated by the first user node through the side chain.

Among them, the fund disbursement request includes the identification of the transaction parties in the blockchain platform and the account addresses of the transaction parties in the bank.

In step 502, the smart contract is confirmed by invoking the fund allocation through the side chain.

Step 503: Calculate through each node on the side chain whether the transaction has been completed and whether the bank account balances of both parties are correct. If so, that is, more than 2/3 of the nodes agree that the transaction has been completed and the bank account balances of both parties to the transaction are correct, then go to step 504; otherwise, go to step 505.

In step 504, it is judged whether the service needs to be synchronized with the main chain through the side chain, if so, go to step 506, otherwise, end the process.

In step 505, the transaction failure information and the transaction failure reason are fed back to the first user node through the side chain.

Step 506, calling the business data synchronization smart contract through the side chain.

Step 507: Calculate and confirm whether the transaction result and the address of the main chain are correct through each node on the side chain. If so, that is, more than 2/3 of the nodes agree to synchronize the transaction information to the main chain, go to step 508; otherwise, go to step 505.

Step 508: Send the transaction information to the relay chain through the first cross-chain gateway through the side chain.

Step 509: Determine whether the transaction is credible and whether the sender of the transaction information is in the blockchain platform through the relay chain. If yes, go to step 510; otherwise, go to step 511.

In step 510, the transaction information is sent to the first cross-chain gateway through the relay chain.

Step 511, it is determined that the transaction is an illegal transaction, and the transaction processing result is rolled back.

Step 512 , search through the first cross-chain gateway according to the address of the main chain, and after finding the main chain, send the transaction information to the second cross-chain gateway connected to the main chain.

Step 513 , confirm through the second cross-chain gateway whether the transaction is endorsed by the side chain, if yes, go to step 514 , otherwise go to step 511 .

Step 514: Send the transaction information to the main chain through the second cross-chain gateway.

In step 515, the transaction is calculated by calling the transaction verification smart contract through the main chain, and the transfer review contract is executed again by connecting to a high-level bank.

Step 516, judge whether the transaction information is correct through the main chain, if yes, go to step 517, otherwise go to step 511.

Step 517, realizing cross-chain synchronization of transaction information.

To sum up, the method provided in this embodiment of the present application is applied to a blockchain platform. The blockchain platform includes a main chain and a side chain, and the service request initiated by the first user node is obtained through the side chain, wherein the service request includes the service Data, call the first smart contract through the side chain, determine that the execution of the business request is completed according to the business data, and obtain the transaction information recorded during the execution of the business request, wherein the transaction information includes the identifier of the first user node, which is called through the side chain The second smart contract, after determining to synchronize the transaction information to the main chain, sends the transaction information to the main chain, and stores the transaction information through the main chain. In this method, the business request execution process of the first user node is performed on the side chain of the blockchain platform, the transaction information can be stored on the side chain of the blockchain platform, and the transaction information can be sent to the main chain through the side chain, and the transaction information can be sent to the main chain through the side chain. The main chain stores transaction information, and the traceability and immutability of the blockchain can ensure the authenticity of the transaction information stored in the main chain, and solve the problem that transaction information cannot be traced.

Moreover, in the process of data collaboration, the smart contract is executed many times, and the transaction information is verified by multiple parties, which ensures the authenticity of the transaction information.

Based on the same concept, an embodiment of the present application provides a data coordination device based on blockchain. The device is configured on a blockchain platform, and the blockchain platform includes a main chain and a side chain. For the specific implementation of the device, please refer to the method The description of the embodiment part, the repeated places will not be repeated, as shown in Figure 6, the device mainly includes:

A first obtaining module 601, configured to obtain a service request initiated by a first user node through the side chain, wherein the service request includes service data;

The first invocation module 602 is configured to invoke the first smart contract through the side chain, determine that the execution of the service request is completed according to the service data, and obtain transaction information recorded during the execution of the service request, wherein the The transaction information includes the identifier of the first user node;

The second calling module 603 is configured to call a second smart contract through the side chain, and after determining to synchronize the transaction information to the main chain, send the transaction information to the main chain;

A processing module 604, configured to store the transaction information through the main chain.

Based on the same concept, an embodiment of the present application also provides an electronic device. As shown in FIG. 7 , the electronic device mainly includes: a processor 701 , a memory 702 and a communication bus 703 , wherein the processor 701 and the memory 702 communicate with each other through communication The bus 703 performs communication with each other. The memory 702 stores a program that can be executed by the processor 701, and the processor 701 executes the program stored in the memory 702 to implement the following steps:

Acquire the service request initiated by the first user node through the side chain, wherein the service request includes service data; call the first smart contract through the side chain, determine that the execution of the service request is completed according to the service data, and obtain the records recorded during the execution of the service request. Transaction information, wherein the transaction information includes the identifier of the first user node; the second smart contract is invoked through the side chain, and after determining that the transaction information is synchronized to the main chain, the transaction information is sent to the main chain; the transaction information is stored through the main chain.

The communication bus 703 mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI for short) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA for short) bus or the like. The communication bus 703 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 7, but it does not mean that there is only one bus or one type of bus.

The memory 702 may include random access memory (Random Access Memory, RAM for short), or may include non-volatile memory (non-volatile memory), such as at least one disk storage. Optionally, the memory may also be at least one storage device located away from the aforementioned processor 701 .

The above-mentioned processor 701 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc., and may also be a digital signal processor (Digital Signal Processing, DSP for short) , Application Specific Integrated Circuit (ASIC for short), Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

In yet another embodiment of the present application, a computer-readable storage medium is also provided, where a computer program is stored in the computer-readable storage medium, and when the computer program is run on a computer, the computer is made to execute the above-mentioned embodiments. The described blockchain-based data collaboration method.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, eg, from a website site, computer, server, or data center via wired (eg, Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg infrared, microwave, etc.) means to transmit to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes, etc.), optical media (eg, DVDs), or semiconductor media (eg, solid state drives), and the like.

It should be noted that, in this document, relational terms such as "first" and "second" etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these Any such actual relationship or sequence exists between entities or operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The above descriptions are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. A data collaboration method based on a block chain is applied to a block chain platform, wherein the block chain platform comprises a main chain and a side chain, and the method comprises the following steps:

acquiring a service request initiated by a first user node through the side chain, wherein the service request comprises service data;

calling a first intelligent contract through the side chain, determining that the execution of the service request is completed according to the service data, and acquiring transaction information recorded in the execution process of the service request, wherein the transaction information comprises an identifier of the first user node;

calling a second intelligent contract through the side chain, determining that the transaction information is synchronized to the main chain, and then sending the transaction information to the main chain;

storing the transaction information via the backbone.

2. The blockchain-based data collaboration method of claim 1 wherein after storing the transaction information over the backbone, the method further comprises:

acquiring a transaction information query request initiated by a second user node through the main chain, wherein the transaction information query request comprises an identifier of the first user node;

and acquiring the transaction information corresponding to the identifier of the first user node from the main chain according to the identifier of the first user node.

3. The blockchain-based data collaboration method according to claim 1 wherein the blockchain platform further comprises a relay chain, a first cross-chain gateway and a second cross-chain gateway;

the sending the transaction information to the main chain comprises:

sending the transaction information to the relay link through the first inter-link gateway;

after the sender of the transaction information is determined to be in the block chain platform through the relay chain, the transaction information is sent to the first cross-link gateway through the relay chain;

sending the transaction information to the second cross-link gateway through the first cross-link gateway;

sending the transaction information to the backbone through the second cross-link gateway.

4. The blockchain-based data collaboration method of claim 1 wherein prior to storing the transaction information over the backbone, the method further comprises:

and calling a third intelligent contract through the main chain to determine that the transaction information is correct.

5. The block chain-based data collaboration method as claimed in any one of claims 1 to 4 wherein the number of the main chain is one and the number of the side chain is at least one.

6. The blockchain-based data collaboration method of claim 5 wherein the storing the transaction information over the backbone includes:

and storing the transaction information to a block corresponding to the identification of the first user node through the main chain.

7. The blockchain-based data collaboration method according to claim 6 wherein after storing the transaction information to the identified corresponding block of the first user node through the main chain, the method further comprises:

and obtaining the evaluation information of the first user node according to the data volume stored in the block corresponding to the identifier of the first user node.

8. A blockchain-based data collaboration apparatus configured on a blockchain platform, the blockchain platform including a main chain and side chains, the apparatus comprising:

a first obtaining module, configured to obtain, through the side chain, a service request initiated by a first user node, where the service request includes service data;

the first calling module is used for calling a first intelligent contract through the side chain, determining that the execution of the service request is completed according to the service data, and acquiring transaction information recorded in the execution process of the service request, wherein the transaction information comprises an identifier of the first user node;

the second calling module is used for calling a second intelligent contract through the side chain, determining that the transaction information is synchronized to the main chain, and then sending the transaction information to the main chain;

and the processing module is used for storing the transaction information through the main chain.

9. An electronic device, comprising: the system comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus;

the memory for storing a computer program;

the processor is configured to execute the program stored in the memory to implement the method for coordinating data based on the blockchain according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the blockchain-based data collaboration method according to any one of claims 1 to 7.

Images