WO2020253688A1

WO2020253688A1 - Blockchain-based cross-chain communication method, device, and transaction system

Info

Publication number: WO2020253688A1
Application number: PCT/CN2020/096424
Authority: WO
Inventors: 何凌峰; 杜志星; 苏小康; 张开翔; 范瑞彬
Original assignee: 深圳前海微众银行股份有限公司
Priority date: 2019-06-20
Filing date: 2020-06-16
Publication date: 2020-12-24
Also published as: CN110278264A; CN110278264B

Abstract

Disclosed in the present invention are a blockchain-based cross-chain communication method, a device, and a transaction system. The method comprises: a first service system generating a first order on the basis of information obtained from a first service chain, determining, by means of a committee chain, a topic of a second service system corresponding to the first order, and writing the first order into the topic of the second service system by means of a first proxy service, so as to cause the second service system to monitor the topic of the second service system by means of a second proxy service and thereby implement execution of the first order. The present technical solution does away with coupling between the various service systems and third party service chains, and thus allows each service system in a rewards marketplace system to access each service chain in a cross-chain manner, while reducing configuration workload.

Description

Method, device and transaction system for cross-chain communication based on blockchain

Cross references to related applications

This application requires the priority of a Chinese patent application filed with the Chinese Patent Office on June 20, 2019, the application number is 201910534425.3, and the application title is "a method, device and transaction system for blockchain-based cross-chain communication". The entire content is incorporated into this application by reference.

Technical field

The embodiment of the present invention relates to the field of financial technology (Fintech), and in particular to a method, device and transaction system for cross-chain communication based on the Blockchain (BlockChain).

Background technique

With the development of computer technology, more and more technologies are applied in the financial field. The traditional financial industry is gradually transforming to financial technology. Blockchain technology is no exception. However, due to the security and real-time requirements of the financial and payment industries, It also places higher requirements on blockchain technology.

The equity mall system includes multiple business systems and business chains corresponding to each business system. Each business system needs to be configured with corresponding code to achieve cross-chain access to each business chain, that is, access to a third-party business chain. As shown in Figure 1, the equity mall system includes business systems A, B, and C, which correspond to business chains a, b, and c, respectively. In order to achieve cross-chain access to each business system, take business system A as an example. Configure the code information for accessing business chains b and c. Similarly, business systems B and C. In addition, if a new business system D and a business chain d are added, the business system D needs to be configured to access the code information of the business chain a, b, and c. Similarly, the business systems A, B, and C need to be configured to access the business chain d Code information.

In the equity mall system in the prior art, the configuration between the business system and the business chain is complicated, and once a new business system and business chain are added, each business system needs to be configured, and the configuration workload is large.

Summary of the invention

The embodiment of the present invention provides a method, device and transaction system for cross-chain communication based on block chain, which are used to release the coupling between each business system and the third-party business chain, and realize the equity mall system under the premise of reducing the configuration workload. Each business system in China cross-chain access to each business chain.

The embodiment of the present invention provides a blockchain-based cross-chain communication method, which is applicable to a transaction system including a committee chain, multiple business systems, and a business chain corresponding to each business system; the committee chain includes the The node corresponding to the system; the subject of each business system is recorded in the smart contract of the committee chain; each business system monitors the messages in the subject of each business system;

The method includes:

The first business system generates the first order according to the information obtained from the first business chain;

The first business system determines the theme of the second business system corresponding to the first order through the committee chain;

The first business system writes the first order into the subject of the second business system through the first agency service of the first business system; the second business system uses the second business system’s The second agent service monitors the subject of the second business system, thereby implementing the execution of the first order.

In the above technical solution, the first business system generates the first order, determines the theme of the second business system corresponding to the first order from the committee chain, and writes the first order into the theme of the second business system through the first agency service , The first business system does not need to store the themes of each business system, nor does it need to configure information related to communication with third-party business chains in the first business system. The first business system only needs to maintain its own business chain and communication with the committee chain The relationship is enough, reducing the operation and maintenance work of the first business system. Further, when a new business system and a business chain are added, the new business system configures the relevant information between its own business chain and the committee chain, and there is no need to configure the information between other existing business chains and other existing businesses. The system also does not need to configure the relationship with the new business chain, which reduces the configuration work of the new business system and business chain.

Optionally, that the first business system writes the first order into the subject of the second business system through the first agency service, including:

The first business system writes the first order into the subject of the second business system of the first node of the committee chain through the first proxy service, so that the first node will The first order is synchronized to the subject of the second business system of the second node; the first node is the node corresponding to the first business system in the committee chain, and the second node is the The node corresponding to the second business system in the committee chain.

In the above technical solution, the first business system writes the first order into the subject of the second business system of the first node through the first agency service, and synchronizes the first order to the second business of the second node via the first node In the subject of the system, the second business system can monitor the subject of the second business system of the second node through the second proxy service, and obtain the first order.

Optionally, the method further includes:

The first business system monitors a second order from the subject of the first business system through the first agency service, and the second order is generated by a third business system and passed through the third business system. The third agent service writes the message of the subject of the first business system;

The first business system sends the second order to the first business chain, and executes the second order through the first business chain, thereby receiving the execution result of the second order of the first business chain;

The first business system writes the execution result of the second order into the subject of the third business system through the first agency service.

In the above technical solution, the first business system can also monitor the second order by subscribing to the topic of the third business system, so that each business system can send messages to the designated business system or receive messages sent by other business systems. , So as to complete the communication between the various business systems. The first business system writes the execution result of the second order into the subject of the third business system through the first agency service, and the third business system can monitor the execution result of the second order, thereby realizing the first business system and the third business system. Business system communication.

Optionally, the committee chain further includes a commodity contract, and the commodity contract records a comparison relationship between each commodity and the subject of each business system;

The first order includes commodity information;

The first business system determines the theme of the second business system corresponding to the first order through the committee chain, including:

The first business system sends a query request to the committee chain, and the query request includes the product information of the first order;

The first business system receives the subject of the second business system returned by the committee chain; the subject of the second business system is determined by the committee chain according to the commodity contract.

In the above technical solution, the committee chain also includes a commodity contract. The commodity contract records the comparison between each commodity and the subject of each business system. After the first business system generates the first order, it can send a query request to the committee chain. The subject of the second business system corresponding to the first order is queried, so that the first order can be sent to the subject of the second business system. Deploying commodity contracts in the committee chain improves the efficiency of the first business system in acquiring the theme of the second business system.

Correspondingly, an embodiment of the present invention also provides a block chain-based cross-chain communication device, which is suitable for a transaction system including a committee chain, multiple business systems, and a business chain corresponding to each business system; the committee chain includes Nodes corresponding to each business system; the subject of each business system is recorded in the smart contract of the committee chain; each business system monitors the messages in the subject of each business system;

The device includes:

The generating unit is configured to generate the first order according to the information obtained from the first business chain;

A determining unit, configured to determine the theme of the second business system corresponding to the first order through the committee chain;

The processing unit is configured to write the first order into the subject of the second business system through the first agent service of the first business system; the second business system through the second agent service of the second business system The service monitors the subject of the second business system, thereby implementing the execution of the first order.

Optionally, the processing unit is specifically configured to:

Optional, also used for:

A second order is monitored from the subject of the first business system through the first agent service, and the second order is generated by a third business system and written through the third agent service of the third business system The message of the subject of the first business system;

Sending the second order to the first business chain, and executing the second order through the first business chain, thereby receiving the execution result of the second order of the first business chain;

The execution result of the second order is written into the subject of the third business system through the first agency service.

The first order includes commodity information;

The determining unit is specifically used for:

Sending a query request to the committee chain, where the query request includes the product information of the first order;

The subject of the second business system returned by the committee chain is received; the subject of the second business system is determined by the committee chain according to the commodity contract.

Correspondingly, an embodiment of the present invention also provides a blockchain-based transaction system, including a committee chain, multiple business systems, and business chains corresponding to each business system;

The committee chain is used to carry the theme of each business system;

Each of the business systems is used to subscribe to the topic of the business system;

The business system is configured to generate a first order according to the business chain of the business system and write the first order into the theme of the corresponding business system through the agency service of the business system;

The business system is further configured to monitor the subject of the business system through the agency service of the business system to obtain a second order of the business system;

The service chain is used to process the second order sent by the service system.

Correspondingly, an embodiment of the present invention also provides a computing device, including:

Memory, used to store program instructions;

The processor is configured to call the program instructions stored in the memory, and execute the above-mentioned blockchain-based cross-chain communication method according to the obtained program.

Correspondingly, an embodiment of the present invention also provides a computer-readable non-volatile storage medium, including computer-readable instructions. When the computer reads and executes the computer-readable instructions, the computer executes the above-mentioned blockchain-based The method of cross-chain communication.

Correspondingly, the embodiment of the present invention also provides a computer program product containing instructions, which when running on a computer, causes the computer to execute the above-mentioned blockchain-based cross-chain communication method.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained from these drawings.

Figure 1 is a schematic diagram of a system architecture in the prior art;

2 is a schematic diagram of a system architecture provided by an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a method for cross-chain communication according to an embodiment of the present invention;

4 is a schematic flowchart of another method for cross-chain communication according to an embodiment of the present invention;

5 is a schematic structural diagram of a cross-chain communication device provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a computing device provided by this application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Fig. 2 exemplarily shows the system architecture applicable to the method of blockchain-based cross-chain communication provided by the embodiment of the present invention. The system architecture may include a committee chain, multiple business systems, and business chains corresponding to each business system. . Among them, the committee chain is a blockchain system composed of nodes. The committee chain includes nodes corresponding to each business system; the smart contract of the committee chain records the theme of each business system. Here, the theme can be understood as a blockchain node A message channel in, is used to receive the message corresponding to the topic; each business system is used to subscribe to the topic of its own business system, that is, each business system monitors the information in the topic of each business system in the smart contract of the committee chain; business The business chain corresponding to the system is used to process the order information sent by the business system.

When each business system performs cross-chain communication, it can generate the first order according to the business chain of the business system and write it into the theme of the corresponding business system through the business system's proxy service. It can also monitor the business system's information through the business system's proxy service. The subject thus obtains the second order of the business system, and the business system can send the second order to the corresponding business chain so that the business chain can process the second order.

As shown in Figure 2, the business system includes business system A, business system B, and business system C. The corresponding business chains are: business chain a, business chain b, and business chain c. The corresponding committee chain nodes are respectively They are: node 1, node 2, and node 3. The corresponding topics are: topic 1, topic 2, and topic 3. Further, the committee chain includes node 1, node 2, and node 3, and each node in the committee chain deploys a smart contract, and the smart contract includes theme 1, theme 2, and theme 3. Business system A creates topic 1 and subscribes to topic 2, business system B creates topic 2 and subscribes to topic 2, business system C creates topic 3 and subscribes to topic 3. For example, when business system A needs to send a message to business system B, you can use the business The agent service of system A writes the message into topic 2 of node 1, and each node in the committee chain performs a broadcast consensus, that is, the message exists in topic 2 of node 2, so that business system B subscribes to the message through the agent service of business system B Message in topic 2. In addition, the business system can not only subscribe to its own corresponding topics, but also correspond to the topics of other business systems. For example, business system B can subscribe to topics 2 and 3 at the same time.

In the embodiment of the present invention, message middleware can be used to implement publishing and subscription of various business systems, and the business system can use the message middleware to activate a proxy service to create a topic in the committee chain for receiving messages corresponding to the topic. Further, the business system can also publish messages to corresponding topics through the proxy service.

Through this system architecture, cross-chain communication between business systems does not require a large amount of code configuration, and only needs to send messages to the subject of the business system to be communicated.

Based on the above description, FIG. 3 exemplarily shows the flow of a method for blockchain-based cross-chain communication according to an embodiment of the present invention, and the flow can be executed by a device for blockchain-based cross-chain communication.

As shown in Figure 3, the process specifically includes:

Step 301: The first business system generates a first order based on the information obtained from the first business chain.

The first business chain is the business chain corresponding to the first business system. Smart contracts are deployed in the first business chain to store product information in the first business system. The product information may be card and coupon information. The first business system can determine the product information to be purchased from the smart contract of the first business chain through SDK (Software Development Kit), and generate the first order according to the product information to be purchased.

Step 302: The first business system determines the theme of the second business system corresponding to the first order through the committee chain.

The committee chain can store the comparison relationship between each product and the theme of each business system in the blockchain ledger. For example, each business system sends its product information to the committee chain, and the committee chain stores it in the form of the account book. When the system needs to send the first order, it can traverse the entire ledger to view the subject of the second business system corresponding to the first order.

Commodity contracts can also be deployed in the committee chain. The commodity contract records the comparison between each commodity and the subject of each business system. For example, if the commodity contract records the identification of a certain commodity, the commodity is a commodity in business system A, and the subject of business system A in the committee chain is topic 1, then the commodity contract records the correspondence between the commodity identification and topic 1 . In the embodiment of the present invention, the first order generated by the first business system includes product information and order information. The product information can include product category, product quotation, coupon denomination, etc., and order information can include order price, purchase quantity, supply For merchants, purchasers, etc., the first business system can record the product information in the query request and send it to the committee chain. After receiving the query request, the committee chain determines the corresponding second business system from the commodity contract based on the product information in the query request And return the theme of the second business system to the first business system.

Step 303: The first business system writes the first order into the subject of the second business system through the first agency service of the first business system.

The first business system can encapsulate the first order in a preset format, and write it into the subject of the second business system of the committee chain through the first agency service of the first business system. In the embodiment of the present invention, as long as the publisher will After the message is published to the topic subscribed by the subscriber, the committee chain will return the first response to the first business system. Here, it may also be that the first agent service returns the first response, that is, after the first agent service writes the first order into the subject of the second business system of the committee chain, it returns the first response to the first business system. In the embodiment of the present invention, the publisher publishes the message and the subscriber subscribes to the message in an asynchronous manner, that is, the first business system sends the first order and the second business system obtains the first order. The first business system does not need to Waiting until the second business system obtains the response information of the first order improves the efficiency of the first business system to issue orders, and each business system only needs to maintain the theme in the corresponding business chain and committee chain, reducing the maintenance workload of the business system .

Specifically, the node corresponding to the first business system in the committee chain is recorded as the first node, and the node corresponding to the second business system in the committee chain is recorded as the second node. The first business system can write the first order into the smart contract of the first node through the first agency service corresponding to the first business system, specifically the second business system of the smart contract of the first node. In the theme, the first node synchronizes the first order written in the smart contract to each node of the committee chain, and the second node’s smart contract is synchronized to the first order, specifically, the first order is synchronized to the second node The subject of the second business system of smart contracts.

The second business system monitors the subject of the second business system through the second proxy service of the second business system, which is equivalent to when the subject of the second business system in the smart contract of the second node is synchronized to the first order, the second business That is, the system can monitor the first order through the second agent service, so that the first order can be executed through the business chain of the second business system.

In addition, the first business system can not only write the first order into the subject of the second business system through the first agent service, but also can monitor the second order written in its subject through the first agent service, where the second The order is a message generated by the third business system and written into the subject of the first business system through the third agent service of the third business system. The first business system sends the monitored second order to the first business chain, and can execute the second order through the first business chain. When the first business chain executes the second order, it can report the execution result of the second order Returning to the first business system, the first business system is writing the execution result of the second order into the subject of the third business system through the first agency service. The third business system monitors the topic and obtains the third order.

In order to better explain the embodiments of the present invention, the following will describe the blockchain-based cross-chain communication process in a specific implementation scenario. As shown in Figure 4, the business system includes business system A and business system B. The corresponding business chains are: business chain a, business chain b, the corresponding committee chain nodes are: node 1, node 2, and the corresponding topics are: topic 1, topic 2. Further, the committee chain includes node 1 and node 2, and each node in the committee chain deploys a smart contract, and the smart contract includes topic 1 and topic 2. The message middleware starts the first proxy service to publish the messages of business system A and subscribe to the messages in topic 1; the message middleware starts the second proxy service to publish the messages of business system B and subscribe to the messages in topic 2. Business system A needs to send the first order to business system B for equity exchange business.

The specific steps are as follows:

In step 401, business system A finds the product and order data that needs to be sent to business system B from the smart contract of business chain a through the SDK, and generates a first order based on the obtained product and order data, for example, in the first order There is the product identification and purchase price of the first product pre-purchased.

In step 402, the business system A determines the subject 2 of the business system B corresponding to the commodity identifier of the first commodity from the commodity contract of the node 1 of the committee chain through the SDK.

In step 403, the business system A encapsulates the first order according to a preset message format, and sends it to the topic 2 of the smart contract of the node 1 through the first agency service.

In step 404, the first order in topic 2 of the smart contract of node 1 in the committee chain is synchronized to topic 2 of the smart contract of node 2, that is, the first order is recorded in topic 2 of the smart contract of node 2.

Step 405: Business system B monitors the first order in topic 2 of the smart contract of node 2 through the second proxy service, analyzes the first order, and determines whether the purchase price in the first order is preset by business system B Exchange rules, such as determining that the purchase price of the first commodity is greater than the cost price, or sending the information in the first order to the staff of business system B, the staff will make manual judgments.

Step 406: If the business system B determines that the first order passes the preset exchange rules, it executes the exchange business in the business chain b, and writes the completion result of the exchange business into the topic 1 of the smart contract of node 2 through the second agent service Medium; If the business system B determines that the first order does not pass the preset exchange rules, it can generate a corresponding response, such as the pre-sale price of the first commodity, and write the response to the node 2 through the second agent service In topic 1 of the smart contract.

In the above technical solution, the first business system generates the first order, determines the theme of the second business system corresponding to the first order from the committee chain, and writes the first order into the theme of the second business system through the first agency service , The first business system does not need to store the themes of each business system, nor does it need to configure information related to communication with third-party business chains in the first business system. The first business system only needs to maintain its own business chain and communication with the committee chain The relationship is enough, reducing the operation and maintenance work of the first business system. Furthermore, the coupling between each business system and the third-party business chain is lifted, and the threshold for new business system access is lowered. When a business system and a business chain are added, the new business system configures its own business chain and the committee chain. There is no need to configure the information with other existing business chains, and other existing business systems do not need to configure the relationship with the new business chain, which reduces the configuration work of the new business system and business chain. Enhance the scalability of various business systems, enable cross-chain access to third-party business chain data at a very low cost, and enhance the scalability of the system. Through the message middleware, the topic-based publish and subscribe model is used, and because it is based on the implementation of the blockchain, the message is never lost and cannot be tampered with. The transmission channel is encrypted and the connection requires certificate authentication. By choosing this inter-agency message middleware And establish a committee chain to safely open up various business systems and realize communication between various business systems.

Based on the same inventive concept, FIG. 5 exemplarily shows the structure of a block chain-based cross-chain communication device provided by an embodiment of the present invention. The device can execute the process of the block chain-based cross-chain communication method. .

The device is suitable for a transaction system including a committee chain, multiple business systems, and a business chain corresponding to each business system; the committee chain includes nodes corresponding to each business system; the smart contract of the committee chain records each business The subject of the system; each business system monitors the messages in the subject of each business system;

The device includes:

The generating unit 501 is configured to generate a first order according to the information obtained from the first business chain;

The determining unit 502 is configured to determine the theme of the second business system corresponding to the first order through the committee chain;

The processing unit 503 is configured to write the first order into the subject of the second business system through the first agency service of the first business system; the second business system through the second business system of the second business system The agent service monitors the subject of the second business system, so as to implement the execution of the first order.

Optionally, the processing unit 503 is specifically configured to:

Optionally, the processing unit 503 is further configured to:

Sending the second order to the first business chain, and executing the second order through the first business chain, so as to receive the execution result of the second order of the first business chain;

The first order includes commodity information;

The determining unit 502 is specifically configured to:

Based on the same inventive concept, the embodiment of the present invention also provides a blockchain-based transaction system, including a committee chain, multiple business systems, and business chains corresponding to each business system;

The committee chain is used to carry the theme of each business system;

The business system is configured to generate a first order according to the business chain of the business system and write it into the theme of the corresponding business system through the agency service of the business system;

Based on the same concept as the method shown in FIG. 3, the present application also provides a computing device. As shown in FIG. 6, the computing device includes at least one processor 620 for implementing the method in FIG. 3 provided by the embodiment of the present application. Any method.

The computing device 600 may also include at least one memory 630 for storing program instructions and/or data. The memory 630 and the processor 620 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 620 may cooperate with the memory 630 to operate. The processor 620 may execute program instructions stored in the memory 630. At least one of the at least one memory may be included in the processor.

In the implementation process, the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments may be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processing circuit (digital signal processor, DSP), a dedicated integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

The computing device 600 may further include a communication interface 610 for communicating with other devices through a transmission medium, so that the device used in the computing device 600 can communicate with other devices. In the embodiment of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. In the embodiments of the present application, when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; it may also be a transceiver with integrated transceiver functions, or an interface circuit.

The computing device 600 may also include a communication line 640. Among them, the communication interface 610, the processor 620, and the memory 630 may be connected to each other through a communication line 640; the communication line 640 may be a peripheral component interconnection standard (peripheral component interconnect, PCI for short) bus or an extended industry standard architecture (extended industry standard architecture) , Referred to as EISA) bus and so on. The communication line 640 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 6, but it does not mean that there is only one bus or one type of bus.

Based on the same inventive concept, embodiments of the present invention also provide a computer-readable non-volatile storage medium, including computer-readable instructions. When the computer reads and executes the computer-readable instructions, the computer executes the above-mentioned region-based The method of block chain cross-chain communication.

Based on the same inventive concept, the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the above-mentioned blockchain-based cross-chain communication method.

The present invention is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

A block chain-based cross-chain communication method, characterized in that it is suitable for a transaction system including a committee chain, multiple business systems, and a business chain corresponding to each business system; the committee chain includes a transaction system corresponding to each business system The node of the committee; the subject of each business system is recorded in the smart contract of the committee chain; each business system monitors the messages in the subject of each business system;

The method includes:

The first business system generates the first order according to the information obtained from the first business chain;

The first business system determines the theme of the second business system corresponding to the first order through the committee chain;

The first business system writes the first order into the subject of the second business system through the first agency service of the first business system; the second business system uses the second business system’s The second agent service monitors the subject of the second business system, thereby implementing the execution of the first order.
The method of claim 1, wherein the first business system writes the first order into the subject of the second business system through the first agency service, comprising:

The first business system writes the first order into the subject of the second business system of the first node of the committee chain through the first proxy service, so that the first node will The first order is synchronized to the subject of the second business system of the second node; the first node is the node corresponding to the first business system in the committee chain, and the second node is the The node corresponding to the second business system in the committee chain.
The method of claim 1, wherein the method further comprises:

The first business system monitors a second order from the subject of the first business system through the first agency service, and the second order is generated by a third business system and passed through the third business system. The third agent service writes the message of the subject of the first business system;

The first business system sends the second order to the first business chain, and executes the second order through the first business chain, thereby receiving the execution result of the second order of the first business chain;

The first business system writes the execution result of the second order into the subject of the third business system through the first agency service.
The method according to claim 1, wherein the committee chain further includes a commodity contract, and the commodity contract records a comparison relationship between each commodity and the subject of each business system;

The first order includes commodity information;

The first business system determines the theme of the second business system corresponding to the first order through the committee chain, including:

The first business system sends a query request to the committee chain, and the query request includes the product information of the first order;

The first business system receives the subject of the second business system returned by the committee chain; the subject of the second business system is determined by the committee chain according to the commodity contract.
A block chain-based cross-chain communication device is characterized in that it is suitable for a transaction system including a committee chain, multiple business systems, and a business chain corresponding to each business system; the committee chain includes a business system corresponding to each business system.的nodes; the subject of each business system is recorded in the smart contract of the committee chain; each business system monitors the messages in the subject of each business system;

The device includes:

The generating unit is configured to generate the first order according to the information obtained from the first business chain;

A determining unit, configured to determine the theme of the second business system corresponding to the first order through the committee chain;

The processing unit is configured to write the first order into the subject of the second business system through the first agent service of the first business system; the second business system through the second agent service of the second business system The service monitors the subject of the second business system, thereby implementing the execution of the first order.
The device according to claim 5, wherein the processing unit is specifically configured to:

The first business system writes the first order into the subject of the second business system of the first node of the committee chain through the first proxy service, so that the first node will The first order is synchronized to the subject of the second business system of the second node; the first node is the node corresponding to the first business system in the committee chain, and the second node is the The node corresponding to the second business system in the committee chain.
The device according to claim 5, wherein the processing unit is further configured to:

A second order is monitored from the subject of the first business system through the first agent service, and the second order is generated by a third business system and written through the third agent service of the third business system The message of the subject of the first business system;

Sending the second order to the first business chain, and executing the second order through the first business chain, thereby receiving the execution result of the second order of the first business chain;

The execution result of the second order is written into the subject of the third business system through the first agency service.
The device according to claim 5, wherein the committee chain further comprises a commodity contract, and the commodity contract records a comparison relationship between each commodity and the subject of each business system;

The first order includes commodity information;

The determining unit is specifically used for:

Sending a query request to the committee chain, where the query request includes the product information of the first order;

The subject of the second business system returned by the committee chain is received; the subject of the second business system is determined by the committee chain according to the commodity contract.
A blockchain-based transaction system, which is characterized by including a committee chain, multiple business systems, and business chains corresponding to each business system;

The committee chain is used to carry the theme of each business system;

Each of the business systems is used to subscribe to the topic of the business system;

The business system is configured to generate a first order according to the business chain of the business system and write it into the theme of the corresponding business system through the agency service of the business system;

The business system is further configured to monitor the subject of the business system through the agency service of the business system to obtain a second order of the business system;

The service chain is used to process the second order sent by the service system.
A computing device, characterized by comprising:

Memory, used to store program instructions;

The processor is configured to call the program instructions stored in the memory, and execute the method according to any one of claims 1 to 4 according to the obtained program.
A computer-readable non-volatile storage medium, characterized by comprising computer-readable instructions, when the computer reads and executes the computer-readable instructions, the computer is caused to execute any one of claims 1 to 4 Methods.
A computer program product, characterized in that, the computer program product includes a calculation program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, The computer executes the method described in any one of claims 1 to 4.