WO2020224235A1 - Procédé et appareil de transactions entre chaînes, dispositif, et support de stockage - Google Patents

Procédé et appareil de transactions entre chaînes, dispositif, et support de stockage Download PDF

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Publication number
WO2020224235A1
WO2020224235A1 PCT/CN2019/120569 CN2019120569W WO2020224235A1 WO 2020224235 A1 WO2020224235 A1 WO 2020224235A1 CN 2019120569 W CN2019120569 W CN 2019120569W WO 2020224235 A1 WO2020224235 A1 WO 2020224235A1
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Prior art keywords
transaction
node
associated data
lock
data corresponding
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PCT/CN2019/120569
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English (en)
Chinese (zh)
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褚镇飞
张伟
李文强
张玉坚
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深圳壹账通智能科技有限公司
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Publication of WO2020224235A1 publication Critical patent/WO2020224235A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/04—Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange

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  • This application relates to the field of blockchain technology, in particular to methods, devices, equipment and storage media for cross-chain transactions.
  • Blockchain is a distributed ledger, and its essence is also a distributed database.
  • a blockchain is an independent ledger, and two different chains are two different independent ledger.
  • Cross-chain technology is a technology for collaborative operation of transactions between multiple distributed ledgers in the blockchain.
  • institutional nodes will carry out security protection in many aspects to ensure the security of cross-chain transactions.
  • the inventor realizes that in a cross-chain transaction, data may be used by multiple chains at the same time. For example, the data is modified by other users during the transaction, resulting in inconsistencies before and after the transaction, and the transaction fails. In view of this, providing a safe and effective transaction method in cross-chain transactions has become a problem to be solved.
  • the purpose of this application is to provide a method, device, equipment and storage medium for cross-chain transactions, aiming to realize safe and effective cross-chain transactions.
  • the first aspect of this application provides a cross-chain transaction method, including: S1, when a cross-chain transaction is performed between each node of a multi-chain, the receiving client sends the transaction information of this transaction and the client The terminal locks the corresponding related data lock request based on the transaction information, and locks the related data corresponding to this transaction on the node based on the lock request; S2, executes the smart contract based on the transaction information and the related data, and completes this time After the transaction, the transaction completion message is pushed to the client; S3, when the client receives the completion message of each node of the multi-chain and sends an unlock request to each node of the multi-chain, it receives the unlock request, Based on the unlock request, the associated data corresponding to the transaction on the current node is unlocked.
  • the second aspect of this application provides a cross-chain transaction device, including: a locking module, used for cross-chain transactions between nodes in a multi-chain, the receiving client sends the transaction information of this transaction and the client is based on The transaction information locks the corresponding associated data request, and locks the associated data corresponding to the transaction on the node based on the lock request; the push module is used to execute the smart contract based on the transaction information and the associated data, and complete the transaction After the transaction, the completion message of this transaction is pushed to the client; the unlocking module is used to receive the completion message of each node of the multi-chain and send the unlock request to each node of the multi-chain. The unlocking request unlocks the associated data corresponding to the transaction on the current node based on the unlocking request.
  • a locking module used for cross-chain transactions between nodes in a multi-chain, the receiving client sends the transaction information of this transaction and the client is based on The transaction information locks the corresponding associated data request, and locks the associated data corresponding to the transaction on
  • a third aspect of the present application provides a cross-chain transaction device, including: a memory and at least one processor, the memory stores instructions, and the memory and the at least one processor are interconnected by wires; the at least one The processor invokes the instructions in the memory, so that the cross-chain transaction device executes the method described in the first aspect.
  • the fourth aspect of the present application provides a computer-readable storage medium, the computer-readable storage medium stores computer instructions, and when the computer instructions run on a computer, the computer executes the above-mentioned first aspect method.
  • the node when a cross-chain transaction is performed between each node of the multi-chain, the node locks the associated data corresponding to the transaction on the node when receiving the transaction, and pushes the completion message of the transaction to The client, after receiving the completion message of each node of the multi-chain, the client sends an unlock request to each node to unlock the associated data corresponding to the transaction on the node.
  • This application locks the data during cross-chain transactions And unlock the data after the transaction is completed, which can realize safe and effective cross-chain transactions.
  • FIG. 1 is a schematic diagram of an optional application environment of each embodiment of this application.
  • FIG. 2 is a schematic diagram of the hardware architecture of an embodiment of the cross-chain transaction device of this application.
  • FIG. 3 is a program module diagram of an embodiment of the processing system in FIG. 2;
  • FIG. 4 is a schematic flowchart of an embodiment of a method for applying a cross-chain transaction.
  • the embodiments of the present application provide a method, device, equipment and storage medium for cross-chain transactions, aiming to realize safe and effective cross-chain transactions.
  • FIG. 1 is a schematic diagram of the application environment of the preferred embodiment of the present application.
  • the multiple chains include blockchain 1, blockchain 2, and blockchain 3.
  • the client sends transactions to multiple blockchains to perform cross-chain transactions among the nodes of the multiple chains.
  • the cross-chain transaction device is the device where the node executing the transaction in the blockchain is located.
  • a cross-chain transaction device is a device that can automatically perform numerical calculation and/or information processing in accordance with pre-set or stored instructions.
  • the cross-chain transaction device can be a computer, a single network server, a server group composed of multiple network servers, or a cloud composed of a large number of hosts or network servers based on cloud computing, where cloud computing is one of distributed computing.
  • a super virtual computer composed of a group of loosely coupled computer sets.
  • the cross-chain transaction device 1 may include, but is not limited to, those that can communicate with each other through a system bus.
  • the memory 11, the processor 12, and the network interface 13, and the memory 11 stores a processing system 10 that can run on the processor 12.
  • Figure 2 only shows the device 1 for cross-chain transactions with components 11-13, but it should be understood that it is not required to implement all of the illustrated components, and more or less may be implemented instead. Components.
  • the memory 11 includes a memory and at least one type of readable storage medium.
  • the memory provides a cache for the operation of the device 1 for cross-chain transactions;
  • the readable storage medium can be, for example, flash memory, hard disk, multimedia card, card-type memory (for example, SD or DX memory, etc.), random access memory (RAM), static random access Non-volatile storage media such as memory (SRAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), magnetic memory, magnetic disks, and optical disks.
  • the readable storage medium may be an internal storage unit of the device 1 for cross-chain transactions, such as the hard disk of the device 1 for cross-chain transactions; in other embodiments, the non-volatile storage medium may also be It is the external storage device of the device 1 for cross-chain transactions, such as plug-in hard disks, Smart Media Card (SMC), Secure Digital (SD) cards, flash memory cards equipped on the device 1 for cross-chain transactions (Flash Card) etc.
  • the readable storage medium of the memory 11 is generally used to store the operating system and various application software installed in the cross-chain transaction device 1, for example, to store the program code of the processing system 10 in an embodiment of the present application.
  • the memory 11 can also be used to temporarily store various types of data that have been output or will be output.
  • the processor 12 may be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor, or other data processing chip in some embodiments, and is used to run data stored in the memory 11 Program code or processing data, such as running the processing system 10, etc.
  • CPU Central Processing Unit
  • controller microcontroller
  • microprocessor or other data processing chip in some embodiments, and is used to run data stored in the memory 11 Program code or processing data, such as running the processing system 10, etc.
  • the network interface 13 may include a standard wireless network interface and a wired network interface.
  • the network interface 13 is generally used to establish a communication connection between the cross-chain transaction device 1 and other electronic devices.
  • the processing system 10 is stored in the memory 11, and includes at least one computer-readable instruction stored in the memory 11, and the at least one computer-readable instruction can be executed by the processor 12 to implement the method of each embodiment of the present application; And, the at least one computer-readable instruction can be divided into different logic modules according to the different functions implemented by its parts.
  • the above-mentioned processing system 10 implements the following steps when being executed by the processor 12:
  • the receiving client sends the transaction information of this transaction and the client's lock request for the corresponding associated data based on the transaction information, and based on the lock request, the current node is The related data corresponding to the transaction is locked;
  • the client When the client receives the completion message of each node of the multi-chain and sends an unlock request to each node of the multi-chain, it receives the unlock request, and performs the associated data corresponding to this transaction on the node based on the unlock request. Unlock.
  • FIG. 3 it is a program module diagram of the processing system 10 in FIG.
  • the processing system 10 is divided into multiple modules, and the multiple modules are stored in the memory 12 and executed by the processor 13 to complete the application.
  • the module referred to in this application refers to a series of computer program instruction segments that can complete specific functions.
  • the processing system 10 can be divided into: a locking module 101, a pushing module 102, and an unlocking module 103.
  • the locking module 101 is used to receive the transaction information of this transaction sent by the client and the lock request of the client based on the transaction information for the corresponding associated data when performing cross-chain transactions between the various nodes of the multi-chain.
  • the lock request locks the associated data corresponding to this transaction on the node;
  • related data is data that must be used in transactions, and different transactions have different related data.
  • institution A and institution B belong to different blockchains.
  • the transaction information of cross-chain transactions is: transfer 1 million from institution A to institution B, and the corresponding associated data is institution A’s account information on the blockchain, Account information of institution B on the blockchain. If the data on each chain is successfully locked, the transaction can be executed. The purpose of locking the associated data is to prevent other users from modifying the data, causing the transaction to fail.
  • the push module 102 is configured to execute a smart contract based on the transaction information and associated data, and push the completion message of the transaction to the client after the transaction is completed;
  • the completion message of this transaction is actively pushed to the client terminal, so that the upper-level client terminal can learn the transaction result in time without constantly polling the node for the transaction result.
  • the unlocking module 103 is used for receiving the unlocking request after the client receives the completion message of each node of the multi-chain and sending an unlocking request to each node of the multi-chain respectively, and based on the unlocking request, the current node The associated data corresponding to this transaction is unlocked.
  • the client When the client receives the completion message of each node of the multi-chain, it analyzes whether it has received the completion message of all the nodes that execute the transaction to determine whether the transaction is successful, and if it is, it can send an unlock request to the multi-chain To unlock the associated data corresponding to this transaction on this node. In other embodiments, the node can unlock the associated data by itself after the transaction is completed.
  • FIG. 4 is a schematic flowchart of an embodiment of a method for cross-chain transaction of this application.
  • the processor 13 of the device 1 for cross-chain transaction executes the processing system 10 stored in the memory 12, the following steps of the method are implemented:
  • Step S1 when a cross-chain transaction is performed between each node of the multi-chain, the receiving client sends the transaction information of this transaction and the client's lock request for the corresponding associated data based on the transaction information, and based on the lock request, the current node The related data corresponding to the previous transaction is locked;
  • the client sends the transaction information of this transaction to each node of the multi-chain for cross-chain transactions, and at the same time, the client sends a lock request of the transaction information to the corresponding associated data to each node of the multi-chain.
  • Related data is the data that must be used in the transaction. Different transactions have different related data. For example, A and B belong to different blockchains.
  • the transaction information of a cross-chain transaction is: transfer 1 million from A to B Institution
  • the corresponding associated data is the account information of institution A on the blockchain and the account information of institution B on the blockchain.
  • the cross-chain transaction fails and the transaction needs to be re-initiated. If the data on each chain is successfully locked, the transaction can be executed.
  • the purpose of locking the associated data is to prevent other users from modifying the data, causing the transaction to fail.
  • Step S2 execute a smart contract based on the transaction information and associated data, and push the completion message of the transaction to the client after the transaction is completed;
  • each node of the multi-chain executes smart contracts based on the transaction information and associated data, executes the transaction submission after the transaction is completed, and writes the transaction information on the blockchain ledger.
  • the transaction is completed
  • the message is actively pushed to the client, so that the upper-level client can learn the transaction result in time without constantly polling the node for the transaction result.
  • the client can obtain the transaction completion message through long polling, that is, after the client sends the transaction information of this transaction to the node, the connection is idle and waits, and the node immediately returns the completion message when the transaction is completed.
  • Message to the client This operation takes into account: when the push completion message is unstable and the transaction is lost, the transaction falls into an unknown state. Therefore, the message delivery mechanism can be used at the same time, that is, the client performs long polling while the node is pushing. .
  • Step S3 After the client receives the completion message of each node of the multi-chain and sends an unlock request to each node of the multi-chain, it receives the unlock request, and based on the unlock request, the transaction corresponding to this node is Link data to unlock.
  • the client When the client receives the completion message of each node of the multi-chain, it analyzes whether it has received the completion message of all the nodes that execute the transaction to determine whether the transaction is successful, and if it is, it can send an unlock request to the multi-chain To unlock the associated data corresponding to this transaction on this node. In other embodiments, the node can unlock the associated data by itself after the transaction is completed.
  • the step of locking the associated data corresponding to this transaction on the node based on the locking request specifically includes: locking the smart contract on a predetermined smart contract based on the locking request Write the associated data corresponding to this transaction on this node, and execute the lock smart contract to lock the associated data corresponding to this transaction on this node;
  • the step of unlocking the associated data corresponding to the transaction on the current node based on the unlock request specifically includes: writing the associated data corresponding to the transaction on the node on the predetermined unlock smart contract based on the unlock request, and execute The unlocking smart contract unlocks the associated data corresponding to this transaction on the node.
  • the related data lock can be realized by a lock smart contract.
  • the transaction is: the user needs to modify data A, then the locked related data can be LOCK-A.
  • the lock smart contract is used to write LOCK-A on the blockchain successfully , It means that data A is locked successfully.
  • the associated data unlocking can be realized by unlocking the smart contract.
  • the unlocking associated data can be LOCK-A.
  • the unlocking smart contract is used to write LOCK-A on the blockchain successfully, Indicates that data A is successfully unlocked.
  • the step of locking the associated data corresponding to this transaction on the current node based on the lock request includes: writing on a predetermined lock smart contract based on the lock request Enter the associated data and the first identity information corresponding to this transaction on this node, and execute the lock smart contract to lock the associated data corresponding to this transaction on this node;
  • the step of unlocking the associated data corresponding to the transaction on the current node based on the unlock request further includes: writing the associated data and the second transaction corresponding to the transaction on the node on the predetermined unlocking smart contract based on the unlock request. 2.
  • Identity information execute the unlocking smart contract, and when the second identity information is the same as the first identity information, the associated data corresponding to the transaction on the current node is unlocked.
  • the second identity information and the first identity information can be the digital certificate of the user (organization), the associated data and the digital certificate of the institution are written on the locked smart contract, and the associated data and the digital certificate of the institution are written on the unlocked smart contract.
  • unlocking if only two digital certificates are consistent, the identity verification is passed, and the unlocking operation can be performed.
  • the step of locking the associated data corresponding to this transaction on the current node based on the lock request includes: writing on a predetermined lock smart contract based on the lock request Enter the associated data and lock duration corresponding to this transaction on this node, and execute the lock smart contract to lock the associated data corresponding to this transaction on this node;
  • the cross-chain transaction method further includes: when the unlock request is not received after pushing the completion message of the transaction to the client, if the time difference between the current moment and the moment when the associated data is locked is greater than or equal to the lock duration, the current The associated data corresponding to this transaction on the node is unlocked.
  • the associated data and the lock duration can be written on the locked smart contract.
  • the analysis is performed on the relationship between the current time and the time when the associated data is locked and the lock duration. The data will be unlocked when it is greater than or equal to the lock duration.
  • the step of locking the associated data corresponding to this transaction on the current node based on the lock request includes: writing on a predetermined lock smart contract based on the lock request Enter the associated data and the number of blocks corresponding to this transaction on this node, and execute the lock smart contract to lock the associated data corresponding to this transaction on this node;
  • the cross-chain transaction method further includes: when the unlock request is not received after pushing the completion message of the transaction to the client, if the difference between the current block number and the block number at the moment when the associated data is locked is greater than or equal to When the number of blocks is reached, the associated data corresponding to the transaction on this node will be unlocked.
  • This embodiment considers that the node time on the blockchain is often not uniform (each node runs on a separate server, and the time of each server is not completely the same, there may be a difference of several seconds or minutes), so it can Use the number of blocks to replace the lock duration mentioned above. For example, if the number of blocks is 10, the valid duration of the locked data is 10 blocks. Assuming that the current block number is 100, other users will The data cannot be unlocked unless the user actively releases it. After the block number reaches 110, it will be automatically unlocked.
  • the node locks the associated data corresponding to the transaction on the node when the transaction is received, and the transaction is completed after the transaction is completed.
  • the completion message of the transaction is pushed to the client.
  • the client After the client receives the completion message of each node of the multi-chain, it sends an unlock request to each node to unlock the associated data corresponding to the transaction on the node. Locking the data during cross-chain transactions and unlocking the data after the transaction is completed can realize safe and effective cross-chain transactions.
  • the present application also provides a cross-chain transaction device, including: a memory and at least one processor, the memory stores instructions, the memory and the at least one processor are interconnected by wires; the at least one processor calls The instructions in the memory enable the cross-chain transaction device to execute the steps in the above-mentioned cross-chain transaction method.
  • the present application also provides a computer-readable storage medium.
  • the computer-readable storage medium may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium.
  • the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on the computer, the computer executes the following steps:
  • the receiving client when a cross-chain transaction is performed between each node of the multi-chain, the receiving client sends the transaction information of this transaction and the client's lock request for the corresponding associated data based on the transaction information, and based on the lock request, the current node The related data corresponding to this transaction is locked;
  • S2 execute the smart contract based on the transaction information and related data, and push the completion message of the transaction to the client after the transaction is completed;
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

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Abstract

La présente invention se rapporte au domaine de la technologie des chaînes de blocs, et concerne un procédé et appareil de transactions entre chaînes, un dispositif, et un support de stockage. Le procédé comporte les étapes consistant: lorsqu'une transaction entre chaînes est effectuée entre divers nœuds de multiples chaînes, à recevoir des informations de transaction de la transaction actuelle émises par un client et une demande de verrouillage du client pour des données associées correspondantes basée sur les informations de transaction, et à verrouiller, selon la demande de verrouillage, les données associées correspondantes de la transaction actuelle sur le nœud actuel; à exécuter un contrat intelligent d'après les informations de transaction et les données associées, et après l'achèvement de la transaction actuelle, à distribuer sélectivement un message d'achèvement de la transaction actuelle au client; et après que le client a reçu respectivement les messages d'achèvement des divers nœuds des multiples chaînes et a envoyé respectivement une demande de déverrouillage aux divers nœuds des multiples chaînes, à recevoir la demande de déverrouillage et à déverrouiller, selon la demande de déverrouillage, les données associées correspondantes de la transaction actuelle sur le nœud actuel. La présente invention réalise une transaction sûre et efficace entre chaînes.
PCT/CN2019/120569 2019-05-06 2019-11-25 Procédé et appareil de transactions entre chaînes, dispositif, et support de stockage WO2020224235A1 (fr)

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CN115701078B (zh) * 2021-07-27 2024-06-04 腾讯科技（深圳）有限公司 跨链交易处理方法、装置、电子设备以及存储介质

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