TWI795645B - A currency trading method、a device based on a block chain and an electronic device - Google Patents

Abstract

The present disclosure provides a currency trading method, a device based on a block chain and an electronic device. In the present disclosure, an intelligent contract generates a transaction according to a first exchange rate exchanging a first token with a second token, a first transaction quantity of the first token, a second exchange rate exchanging the second token with the first token, and second transaction quantity, and sends the transaction to a third party system to notify the third party system to matchmaking the transaction. When receiving an exchange instruction sent by the third party system, the intelligent contract issues the second token corresponding to the first transaction quantity to the transaction sender according to the first transaction quantity and the first exchange rate, and issues the first token corresponding to the second transaction quantity to the transaction receiver according to the second transaction quantity and the second exchange rate.

Description

Currency transaction method, device and electronic device based on block chain

The present invention relates to the technical field of blockchain, in particular to a currency transaction method, device and electronic equipment based on blockchain.

The convenient transaction of various assets and the free circulation of currency are the cornerstones of modern commercial society. The common basis of asset transactions and currency circulation is trust in value, transaction parties and transaction rules. However, in order to build trust, especially the trust between unfamiliar transaction parties and the trust in the reliability of assets, the society has paid a very high price, and various centralized large-scale organizations and various government regulatory agencies have been established. Free and convenient asset transactions are realized through trust in the credibility of large institutions and governments. For example, various stock and commodity trading markets, large commercial banks, central banks, housing management bureaus, etc. In order to meet the trust requirements, these organizations and institutions have huge organizations and detailed and complicated processes, resulting in high operating costs and limited efficiency. More importantly, the centralized organization brings power and information to the organization itself, which may cause the organization's own interests to be inconsistent with social interests, or the organization's own negligence or malicious violations may have serious consequences.

In view of the above, it is necessary to propose a blockchain-based currency transaction method, device, and electronic equipment to eliminate manual errors and avoid the complicated setting and approval process of existing currency transactions.

The first aspect of the present application provides a blockchain-based currency transaction method, the method comprising: the smart contract on the blockchain receives the first setting instruction sent by the transaction sender, wherein the first setting instruction is used to set The first exchange rate for exchanging the first token for the second token; the smart contract receives the first transaction quantity for exchanging the first token sent by the transaction sender; the smart contract receives the first transaction amount sent by the transaction receiver The second setting instruction, wherein the second setting instruction is used to set the second exchange rate for exchanging the second token for the first token; the smart contract receives the exchange rate sent by the transaction receiver to exchange the first token The second transaction quantity of two tokens; the smart contract generates a transaction according to the first exchange rate, the first transaction quantity, the second exchange rate and the second transaction quantity, and sends the transaction to a third-party system for notification The third-party system matches the transaction; the smart contract receives the exchange instruction sent by the third-party system; and when the smart contract receives the exchange instruction, according to the first transaction amount and the The first exchange rate issues a second token corresponding to the first transaction amount to the transaction sender, and issues a token corresponding to the second transaction amount according to the second transaction amount and the second exchange rate of the first token to the transaction recipient.

Preferably, the third-party system matching the transaction includes: the third-party system checking whether the transaction meets a matching condition, and determining that the transaction is established when the transaction meets the matching condition.

Preferably, the method further includes: the third-party system judging whether the first token in the account of the transaction sender meets the requirement of the second transaction amount, and the second token in the account of the transaction receiver Whether the currency meets the requirement of the first transaction quantity, and judge whether the first exchange rate is within the first threshold range, and whether the second exchange rate is within the second threshold range; The first token in the account of the transaction sender meets the requirement of the second transaction quantity, the second token in the account of the transaction receiver meets the requirement of the first transaction quantity, and the first exchange rate is at determining that the transaction is established when the first threshold range and the second exchange rate are within the second threshold range; and sending an exchange instruction to the smart contract when determining that the transaction is established.

Preferably, the method further includes: when the smart contract receives the exchange instruction, it is judged whether the first token in the account of the transaction sender meets the requirement of the second transaction quantity, and the Whether the second token in the account of the transaction recipient meets the requirement of the first transaction amount; determine whether the first exchange rate is within the first threshold range, and whether the second exchange rate is within the second Within the threshold range; when the first token in the account of the transaction sender meets the requirements of the second transaction amount, and the second token in the account of the transaction receiver meets the first transaction amount demand, the first exchange rate is within the first threshold range, and the second exchange rate is within the second threshold range, according to the first transaction quantity and the first exchange rate, the The second token corresponding to the first transaction amount is given to the transaction sender, and the second token corresponding to the second transaction amount is issued to the transaction according to the second transaction amount and the second exchange rate receiver.

Preferably, the method further includes: calculating the exchange rate difference between the first exchange rate and the second exchange rate; calculating the target second token according to the exchange rate difference and the first transaction quantity or according to calculating the exchange difference and the second transaction amount to obtain a target first token; and sending the target first token or the target second token to the third-party system.

Preferably, the method further includes: the smart contract receiving an instruction to create a transaction order sent by the transaction sender, and establishing a transaction in which the first token is exchanged for the second token according to the instruction to establish a transaction order one.

The second aspect of the present application provides a block chain-based currency transaction device, the device includes: a first exchange rate setting module, used to receive the first setting instruction sent by the transaction sender through the smart contract on the block chain , wherein the first setting instruction is used to set the first exchange rate of the first token to the second token; the first transaction quantity setting module is used to receive the transaction sender sent by the smart contract Exchange the first transaction quantity of the first token; the second exchange rate setting module is used to receive the second setting instruction sent by the transaction receiver through the smart contract, wherein the second setting instruction is used to set the The second exchange rate for exchanging the second token for the first token; the second transaction quantity setting module is used to receive the exchange rate for the second token sent by the transaction receiver through the smart contract The second transaction quantity; a notification module, used to generate a transaction according to the first exchange rate, the first transaction quantity, the second exchange rate and the second transaction quantity through the smart contract, and send the transaction to the second transaction quantity The three-party system is used to notify the third-party system to match the transaction; the receiving module is used to receive the exchange instruction sent by the third-party system through the smart contract; and the exchange module is used to use the smart contract. When the smart contract receives the exchange instruction, it issues a second token corresponding to the first transaction amount to the transaction sender according to the first transaction amount and the first exchange rate, and according to the The second transaction quantity and the second exchange rate issue the first token corresponding to the second transaction quantity to the transaction receiver.

Preferably, the third-party system matching the transaction includes: the third-party system checking whether the transaction meets a matching condition, and determining that the transaction is established when the transaction meets the matching condition.

Preferably, the exchange module is also used for: When the smart contract receives the exchange instruction, it is judged whether the first token in the account of the transaction sender satisfies the requirement of the second transaction quantity, and whether the token in the account of the transaction receiver Whether the second token satisfies the requirement of the first transaction quantity; judging whether the first exchange rate is within the first threshold range, and whether the second exchange rate is within the second threshold range; when the The first token in the account of the transaction sender satisfies the requirement of the second transaction quantity, the second token in the account of the transaction receiver meets the requirement of the first transaction quantity, and the first When the exchange rate is within the first threshold range and the second exchange rate is within the second threshold range, according to the first transaction amount and the first exchange rate, a second exchange rate corresponding to the first transaction amount is issued. The second token is given to the transaction sender, and the second token corresponding to the second transaction amount is issued to the transaction receiver according to the second transaction amount and the second exchange rate.

A third aspect of the present application provides an electronic device, the electronic device includes a processor, and the processor is configured to implement the blockchain-based currency transaction method when executing a computer program stored in a memory.

When the smart contract in this case receives the exchange instruction, it issues the second token corresponding to the first transaction amount to the transaction sender according to the first transaction amount and the first exchange rate, and according to The second transaction quantity and the second exchange rate issue the first token corresponding to the second transaction quantity to the transaction recipient to ensure the strict and correct execution of the exchange logic and eliminate manual work errors. In addition, using this case, any individual or organization willing to provide exchange services can deploy exchange contracts and operate exchange services on the blockchain as long as they have sufficient funds, without complicated settings and approvals, and more on the blockchain The service node guarantees the reliability of the exchange service and the rationality of the price.

30: Blockchain-based currency transaction device

301: The first exchange rate setting module

302: The first transaction quantity setting module

303: Second exchange rate setting module

304: The second transaction quantity setting module

305: Notification module

306: Receiving module

307: exchange module

308: terminate the module

6: Electronic equipment

61: Memory

62: Processor

63: Computer program

Fig. 1 is a flowchart of a blockchain-based currency transaction method in an embodiment of the present invention.

Fig. 2 is a structural diagram of a currency transaction device based on blockchain in an embodiment of the present invention.

FIG. 3 is a schematic diagram of an electronic device in an embodiment of the present invention.

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention, and the described embodiments are only some 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 persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

Preferably, the blockchain-based currency transaction method of the present invention is applied to one or a plurality of electronic devices. The electronic device is a device that can automatically perform numerical calculations and/or information processing according to pre-set or stored instructions, and its hardware includes but not limited to microprocessors, Application Specific Integrated Circuits (ASIC) , Programmable Gate Array (Field-Programmable Gate Array, FPGA), Digital Signal Processor (Digital Signal Processor, DSP), embedded devices, etc.

The electronic device may be a computing device such as a desktop computer, a notebook computer, a tablet computer, or a cloud server. The device can perform human-computer interaction with the user through keyboard, mouse, remote controller, touch panel or voice control device.

Example 1

Fig. 1 is a flowchart of a currency transaction method based on blockchain in an embodiment of the present invention. According to different requirements, the order of the steps in the flowchart can be changed, and some steps can be omitted.

Referring to Fig. 1, the currency transaction method based on block chain specifically includes the following steps:

Step S11, the smart contract on the block chain receives the first setting instruction sent by the transaction sender, wherein the first setting instruction is used to set the first exchange rate for exchanging the first token with the second token.

In this embodiment, the block chain includes a plurality of block chain nodes, and each block chain node includes the smart contract. The transaction sender is connected to a blockchain node on the blockchain. In this embodiment, the first setting instruction sent by the transaction sender is received by the smart contract on the blockchain node corresponding to the transaction sender. In this embodiment, the transaction sender is a terminal device, for example, the terminal device may be a notebook computer, a smart phone, a tablet computer, etc., or the transaction sender is an account address.

In step S12, the smart contract receives the first transaction quantity for exchanging the first token sent by the transaction sender.

Step S13, the smart contract receives a second setting instruction sent by the transaction recipient, wherein the second setting instruction is used to set a second exchange rate for exchanging the second token with the first token.

In this embodiment, the transaction receiver is connected to a blockchain node on the blockchain. In this embodiment, the second setting instruction sent by the transaction sender is received by the smart contract on the block chain node corresponding to the transaction receiver. In this embodiment, the transaction receiver is a terminal device or an account address different from the transaction sender.

In step S14, the smart contract receives a second transaction quantity for exchanging the second token sent by the transaction recipient.

Step S15, the smart contract generates a transaction according to the first exchange rate, the first transaction amount, the second exchange rate and the second transaction amount, and sends the transaction to a third-party system to notify the third-party system of The transactions are matched.

In this embodiment, the generated transaction includes the first setting instruction, the first transaction transaction quantity, second setting order and second transaction quantity. In this embodiment, the third-party system is connected to a blockchain node on the blockchain. In this embodiment, the smart contract on the block chain node corresponding to the third-party system is sent to the third-party system to notify the third-party system to match the transaction. In this embodiment, the matching of the transaction by the third-party system includes: the third-party system checks whether the transaction satisfies the matching condition, and determines the transaction when the transaction satisfies the matching condition established. Specifically, the third-party system judges whether the first token in the account of the transaction sender meets the requirements of the second transaction quantity, and whether the second token in the account of the transaction receiver meets the requirements of the first transaction amount. Quantity requirements, and judging whether the first exchange rate is within the first threshold range, and whether the second exchange rate is within the second threshold range; the first token in the account of the transaction sender satisfies The requirement of the second transaction amount, the second token in the account of the transaction recipient meets the requirement of the first transaction amount, the first exchange rate is within the first threshold range and the second exchange rate is within the second threshold When it is within the range, it is determined that the transaction is established; when it is determined that the transaction is established, an exchange instruction is sent to the smart contract. In this embodiment, the third-party system is also used to record the transaction.

Step S16, the smart contract receives the exchange instruction sent by the third-party system.

Step S17, when the smart contract receives the exchange instruction, issue a second token corresponding to the first transaction amount to the transaction sender according to the first transaction amount and the first exchange rate, and issuing the first token corresponding to the second transaction amount to the transaction recipient according to the second transaction amount and the second exchange rate.

In this embodiment, when the smart contract receives the exchange instruction, it judges whether the first token in the account of the transaction sender meets the requirement of the second transaction amount, and whether the first token in the account of the transaction receiver satisfies the requirement of the second transaction quantity. Whether the second token meets the requirement of the first transaction amount; judge whether the first exchange rate is within the first threshold range, and whether the second exchange rate is within the second threshold range; when the account of the transaction sender The first token in satisfies the requirement of the second transaction amount, and the transaction recipient’s When the second token in the account meets the requirement of the first transaction quantity, the first exchange rate is within the first threshold range, and the second exchange rate is within the second threshold range, the smart contract according to the first The transaction amount and the first exchange rate issue a second token corresponding to the first transaction amount to the transaction sender, and issue the second token corresponding to the second exchange rate according to the second transaction amount and the second exchange rate The first token corresponding to the second transaction quantity is given to the transaction receiver.

In this embodiment, the method further includes: calculating the exchange rate difference between the first exchange rate and the second exchange rate; calculating the target second token according to the exchange rate difference and the first transaction quantity Or calculate the target first token according to the exchange difference and the second transaction amount, and send the target first token or the target second token to the third-party system.

In this embodiment, the method further includes the step of: the smart contract receives the transaction order creation instruction sent by the transaction sender, and creates a transaction order for exchanging the first token for the second token according to the establishment transaction order instruction .

In this embodiment, the method further includes the step of: the smart contract receiving the exchange termination instruction sent by the transaction sender, and returning the remaining first tokens to the transaction sender according to the exchange termination instruction, and returning the remaining second token to the transaction recipient.

When the smart contract in this case receives the exchange instruction, it issues the second token corresponding to the first transaction amount to the transaction sender according to the first transaction amount and the first exchange rate, and according to The second transaction quantity and the second exchange rate issue the first token corresponding to the second transaction quantity to the transaction recipient to ensure the strict and correct execution of the exchange logic and eliminate manual work errors. In addition, using this case, any individual or organization willing to provide exchange services can deploy exchange contracts and operate exchange services on the blockchain as long as they have sufficient funds, without complicated settings and approvals, and more on the blockchain The service node guarantees the reliability of the exchange service and the rationality of the price.

Example 2

FIG. 2 is a structural diagram of a currency transaction device 30 based on blockchain in an embodiment of the present invention.

In some embodiments, the blockchain-based currency transaction device 30 runs in an electronic device. The blockchain-based currency transaction device 30 may include a plurality of functional modules composed of program code segments. The program codes of the various program segments in the blockchain-based money transaction device 30 can be stored in the memory and executed by at least one processor to perform the blockchain-based money transaction function.

In this embodiment, the blockchain-based currency transaction device 30 can be divided into multiple functional modules according to the functions it performs. Referring to Fig. 2, the currency transaction device 30 based on block chain may include a first exchange rate setting module 301, a first transaction quantity setting module 302, a second exchange rate setting module 303, a second transaction quantity setting module Group 304 , notification module 305 , receiving module 306 exchange module 307 and termination module 308 . The module referred to in the present invention refers to a series of computer program segments that can be executed by at least one processor and can complete fixed functions, which are stored in the memory. In some embodiments, the functions of each module will be described in detail in subsequent embodiments.

The first exchange rate setting module 301 is used to receive the first setting instruction sent by the transaction sender through the smart contract on the block chain, wherein the first setting instruction is used to set the first token to be exchanged for the second token The first exchange rate for .

In this embodiment, the block chain includes a plurality of block chain nodes, and each block chain node includes the smart contract. The transaction sender is connected to a blockchain node on the blockchain. In this embodiment, the first setting instruction sent by the transaction sender is received by the smart contract on the blockchain node corresponding to the transaction sender. In this embodiment, the transaction sender is a terminal device, for example, the terminal device may be a notebook computer, a smart phone, a tablet computer, etc., or the transaction sender is an account address.

The first transaction quantity setting module 302 receives the first transaction quantity for exchanging the first token sent by the transaction sender through the smart contract.

The second exchange rate setting module 303 is used to receive the second setting instruction sent by the transaction receiver through the smart contract, wherein the second setting instruction is used to set the second exchange rate of the second token to the first token. exchange rate.

In this embodiment, the transaction receiver is connected to a blockchain node on the blockchain. In this embodiment, the second setting instruction sent by the transaction sender is received by the smart contract on the block chain node corresponding to the transaction receiver. In this embodiment, the transaction receiver is a terminal device or an account address different from the transaction sender.

The second transaction amount setting module 304 is used for receiving the second transaction amount for exchanging the second token sent by the transaction receiver through the smart contract.

The notification module 305 uses the smart contract to generate a transaction according to the first exchange rate, the first transaction amount, the second exchange rate, and the second transaction amount, and sends the transaction to a third-party system to notify all The third party system matches the transaction.

In this embodiment, the generated transaction includes the first exchange rate, the first transaction amount, the second exchange rate, and the second transaction amount. In this embodiment, the third-party system is connected to a blockchain node on the blockchain. In this embodiment, the smart contract on the block chain node corresponding to the third-party system is sent to the third-party system to notify the third-party system to match the transaction. In this embodiment, the matching of the transaction by the third-party system includes: the third-party system checks whether the transaction satisfies the matching condition, and determines the transaction when the transaction satisfies the matching condition established. Specifically, the third-party system judges whether the first token in the account of the transaction sender meets the requirements of the second transaction quantity, and whether the second token in the account of the transaction receiver meets the requirements of the first transaction amount. Quantity requirements, and judging whether the first exchange rate is within the first threshold range, and whether the second exchange rate is within the second threshold range; the first token in the account of the transaction sender satisfies The requirement of the second transaction quantity, the second token in the account of the transaction recipient meets the requirement of the first transaction quantity, the first exchange rate is within the first threshold range and the second 2. When the exchange rate is within the second threshold range, it is determined that the transaction is established; when it is determined that the transaction is established, an exchange instruction is sent to the smart contract. In this embodiment, the third-party system is also used to record the transaction.

The receiving module 306 receives the exchange instruction sent by the third-party system through the smart contract.

When the exchange module 307 receives the exchange instruction through the smart contract, it issues a second token corresponding to the first transaction amount to the said first transaction amount and the first exchange rate. The transaction sender, and according to the second transaction amount and the second exchange rate, issue the first token corresponding to the second transaction amount to the transaction receiver.

In this embodiment, when the smart contract receives the exchange instruction, it judges whether the first token in the account of the transaction sender meets the requirement of the second transaction amount, and whether the first token in the account of the transaction receiver satisfies the requirement of the second transaction quantity. Whether the second token meets the requirement of the first transaction amount; judge whether the first exchange rate is within the first threshold range, and whether the second exchange rate is within the second threshold range; when the account of the transaction sender The first token in the account meets the requirement of the second transaction amount, the second token in the account of the transaction recipient meets the requirement of the first transaction amount, the first exchange rate is within the first threshold range and the second When the second exchange rate is within the second threshold range, the smart contract issues a second token corresponding to the first transaction amount to the transaction sender according to the first transaction amount and the first exchange rate, and distributing a token corresponding to the second transaction quantity to the transaction receiver according to the second transaction quantity and the second exchange rate.

In this embodiment, the exchange module 307 is also used to calculate the exchange rate difference between the first exchange rate and the second exchange rate; calculate the target second exchange rate based on the exchange rate difference and the first transaction quantity The second token or the target first token is calculated according to the exchange difference and the second transaction amount, and the target first token or the target second token is sent to the third-party system.

In this embodiment, the exchange module 307 is also used to receive the The instruction to create a transaction order sent by the transaction sender, and according to the instruction to create a transaction order, create a transaction order for exchanging the first token for the second token.

In this embodiment, the termination module 308 is used to receive the termination exchange instruction sent by the transaction sender through the smart contract, and return the remaining first tokens to the transaction according to the termination exchange instruction The sender, and returning the remaining second token to the transaction receiver.

When the smart contract in this case receives the exchange instruction, it issues the second token corresponding to the first transaction amount to the transaction sender according to the first transaction amount and the first exchange rate, and according to The second transaction quantity and the second exchange rate issue the first token corresponding to the second transaction quantity to the transaction recipient to ensure the strict and correct execution of the exchange logic and eliminate manual work errors. In addition, using this case, any individual or organization willing to provide exchange services can deploy exchange contracts and operate exchange services on the blockchain as long as they have sufficient funds, without complicated settings and approvals, and more on the blockchain The service node guarantees the reliability of the exchange service and the rationality of the price.

Example 3

FIG. 3 is a schematic diagram of an electronic device 6 in an embodiment of the present invention.

The electronic device 6 includes a memory 61 , a processor 62 and a computer program 63 stored in the memory 61 and executable on the processor 62 . When the processor 62 executes the computer program 63, it realizes the steps in the above embodiment of the blockchain-based currency transaction method, such as steps S11-S17 shown in FIG. 1 . Alternatively, when the processor 62 executes the computer program 63, it realizes the functions of each module/unit in the embodiment of the currency transaction device based on blockchain described above, such as the modules 301-308 in FIG. 2 .

Exemplarily, the computer program 63 can be divided into one or multiple modules/units, and the one or multiple modules/units are stored in the memory 61 and executed by the processor 62 to Complete the present invention. The one or multiple modules/units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution of the computer program 63 in the electronic device 6 process. For example, the computer program 63 can be divided into the first exchange rate setting module 301 in Figure 2, the first transaction quantity setting module 302, the second exchange rate setting module 303, the second transaction quantity setting module 304, the notification Module 305, receiving module 306, exchange module 307 and suspension module 308, the specific functions of each module refer to Embodiment 2.

In this embodiment, the electronic device 6 is a server, a terminal device or a cloud server. Those skilled in the art can understand that the schematic diagram is only an example of the electronic device 6, and does not constitute a limitation to the electronic device 6, and may include more or less components than those shown in the illustration, or combine certain components, or have different Components, for example, the electronic device 6 may also include input and output devices, network access devices, bus bars, and the like.

The so-called processor 62 can be a central processing module (Central Processing Unit, CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC) ), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor 62 can also be any conventional processor, etc., the processor 62 is the control center of the electronic device 6, and uses various interfaces and lines to connect the entire electronic device 6. various parts.

The memory 61 can be used to store the computer program 63 and/or module/unit, and the processor 62 runs or executes the computer program and/or module/unit stored in the memory 61, And call the data stored in the memory 61 to realize various functions of the electronic device 6 . The memory 61 can mainly include a stored program area and a stored data area, wherein the stored program area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); The area can store data created according to the use of the electronic device 6 (such as audio data, phonebook, etc.) and the like. In addition, memory 61 may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart memory card (Smart Media Card, SMC), Secure Digital (SD) card, flash memory card (Flash Card), at least one disk memory component, flash memory device, or other volatile solid state memory components.

If the integrated module/unit of the electronic device 6 is realized in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention realizes all or part of the processes in the methods of the above embodiments, and can also be completed by instructing related hardware through computer programs, and the computer programs can be stored in a computer-readable storage medium. When the computer program is executed by the processor, it can realize the steps of the above-mentioned various method embodiments. Wherein, the computer program includes computer program code, and the computer program code may be in the form of original code, object code, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read- Only Memory), Random Access Memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable Excludes electrical carrier signals and telecommunication signals.

In the several embodiments provided by the present invention, it should be understood that the disclosed electronic devices and methods can be implemented in other ways. For example, the electronic device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

In addition, each functional module in each embodiment of the present invention may be integrated into the same processing module, or each module may exist separately physically, or two or more modules may be integrated into the same module. The above-mentioned integrated modules can be implemented in the form of hardware, or in the form of hardware plus software function modules.

For those skilled in the art, it is obvious that the present invention is not limited to the exemplary embodiments described above details, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, no matter from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates. Furthermore, it is clear that the word "comprising" does not exclude other modules or steps, and the singular does not exclude the plural. The multiple modules or electronic devices stated in the electronic device claim can also be realized by the same module or electronic device through software or hardware. The words first, second, etc. are used to denote names and do not imply any particular order.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims (9)

A blockchain-based currency transaction method, the improvement of which is that the method includes: a smart contract on the blockchain receives a first setting instruction sent by a transaction sender, wherein the first setting instruction is used to set the first generation currency to the first exchange rate of the second token; the smart contract receives the first transaction amount for the first token sent by the transaction sender; the smart contract receives the second setting sent by the transaction receiver instruction, wherein the second setting instruction is used to set the second exchange rate for exchanging the second token for the first token; the smart contract receives the exchange rate for the second token sent by the transaction recipient the second transaction quantity; the smart contract generates a transaction according to the first exchange rate, the first transaction quantity, the second exchange rate and the second transaction quantity, and sends the transaction to a third-party system to notify the first The transaction is matched by a three-party system, wherein the third-party system is connected to a blockchain node on the blockchain, and the third-party system determines the first token in the account of the transaction sender Whether the requirement for the second transaction quantity is met, and whether the second token in the account of the transaction recipient meets the requirement for the first transaction quantity, and whether the first exchange rate is within the first threshold range, and the Whether the second exchange rate is within the second threshold range; the first token in the account of the transaction sender meets the requirement of the second transaction quantity, and the second token in the account of the transaction receiver meets the second threshold A demand for a transaction quantity, when the first exchange rate is within the first threshold range and the second exchange rate is within the second threshold range, it is determined that the transaction is established; and when the transaction is determined to be established, the smart contract Sending an exchange instruction; the smart contract receives the exchange instruction sent by the third-party system; when the smart contract receives the exchange instruction, it issues an exchange order corresponding to the first exchange rate according to the first transaction quantity and the first exchange rate. A second token corresponding to a transaction amount is given to the transaction sender, and according to The second transaction quantity and the second exchange rate issue the first token corresponding to the second transaction quantity to the transaction recipient; and the smart contract receives the exchange termination instruction sent by the transaction sender , returning the remaining first tokens to the transaction sender according to the abort exchange instruction, and returning the remaining second tokens to the transaction receiver. The currency transaction method based on block chain as described in claim 1, wherein the third-party system matching the transaction includes: the third-party system checks whether the transaction meets the matching conditions, and determining that the transaction is established when the transaction satisfies the match-matching condition. The currency transaction method based on blockchain as described in claim 1, wherein the method further includes: when the smart contract receives the exchange instruction, it is judged that the first generation in the account of the transaction sender Whether the currency meets the requirement of the second transaction quantity, and whether the second token in the account of the transaction recipient meets the requirement of the first transaction quantity; determine whether the first exchange rate is within the first within the threshold range, and whether the second exchange rate is within the second threshold range; when the first token in the account of the transaction sender meets the requirement of the second transaction amount, the transaction receiver When the second token in the account meets the requirement of the first transaction quantity, the first exchange rate is within the first threshold range, and the second exchange rate is within the second threshold range, according to the Issue the second token corresponding to the first transaction quantity to the transaction sender according to the first transaction quantity and the first exchange rate, and issue the token corresponding to the second transaction quantity and the second exchange rate according to the second transaction quantity and the second exchange rate The first token corresponding to the second transaction amount is given to the transaction recipient. The currency transaction method based on blockchain as described in Claim 1, wherein the method further includes: calculating the exchange rate difference between the first exchange rate and the second exchange rate; according to the exchange rate difference and The first transaction quantity is calculated to obtain the target second token or the target first token is calculated according to the exchange difference and the second transaction quantity; and the target first token or the target second token Tokens are sent to the third-party system. The currency transaction method based on block chain as described in claim 1, wherein the method further includes: the smart contract receives the transaction order establishment instruction sent by the transaction sender, and establishes a transaction order according to the establishment transaction order instruction A transaction slip for exchanging the first token for the second token. A block chain-based currency transaction device, the improvement of which is that the device includes: a first exchange rate setting module, which is used to receive the first setting instruction sent by the transaction sender through the smart contract on the block chain, wherein the The first setting instruction is used to set the first exchange rate for exchanging the first token for the second token; the first transaction quantity setting module is used to receive the exchange rate sent by the transaction sender through the smart contract. The first transaction amount of the first token; the second exchange rate setting module, used to receive the second setting instruction sent by the transaction receiver through the smart contract, wherein the second setting instruction is used to set the second A second exchange rate for exchanging tokens for the first tokens; a second transaction quantity setting module for receiving a second transaction for exchanging the second tokens sent by the transaction receiver through the smart contract Quantity; notification module, used to generate a transaction according to the first exchange rate, the first transaction quantity, the second exchange rate and the second transaction quantity through the smart contract, and send the transaction to a third-party system for Informing the third-party system to match the transaction, wherein the third-party system is connected to a blockchain node on the blockchain, and the third-party system determines the transaction sender's account Whether the first token meets the requirement of the second transaction amount, and whether the second token in the account of the transaction recipient meets the requirement of the first transaction amount, and judging whether the first exchange rate is within the first threshold range Inside, And whether the second exchange rate is within the second threshold range; the first token in the account of the transaction sender meets the requirements of the second transaction amount, and the second token in the account of the transaction receiver determining that the transaction is established when the first transaction quantity is met, the first exchange rate is within a first threshold range, and the second exchange rate is within a second threshold range; The smart contract sends an exchange instruction; the receiving module is used to receive the exchange instruction sent by the third-party system through the smart contract; and the exchange module is used to receive the exchange instruction through the smart contract, According to the first transaction amount and the first exchange rate, a second token corresponding to the first transaction amount is issued to the transaction sender, and according to the second transaction amount and the second exchange rate Issue the first token corresponding to the second transaction quantity to the transaction recipient; the termination module is used to receive the termination exchange instruction sent by the transaction sender through the smart contract, and to terminate the exchange according to the Instructions are returned to the transaction sender for the remainder of the first token, and are returned to the transaction recipient for the remainder of the second token. The currency transaction device based on block chain as described in claim 6, wherein the third-party system matching the transaction includes: the third-party system checks whether the transaction meets the matching conditions, and determining that the transaction is established when the transaction satisfies the match-matching condition. The currency transaction device based on block chain as described in claim 7, wherein the exchange module is also used to: determine the transaction sender’s account when receiving the exchange instruction through the smart contract Whether the first token meets the requirement of the second transaction quantity, and whether the second token in the account of the transaction recipient meets the requirement of the first transaction quantity; judging whether the first exchange rate is within a first threshold range, and whether the second exchange rate is within a second threshold range; when the first token in the account of the transaction sender satisfies the first Two transaction quantity requirements, the second token in the transaction receiver's account meets the first transaction quantity requirements, the first exchange rate is within the first threshold range, and the second exchange rate When within the second threshold range, according to the first transaction amount and the first exchange rate, issue a second token corresponding to the first transaction amount to the transaction sender, and according to the second transaction The quantity and the second exchange rate issue the first token corresponding to the second transaction quantity to the transaction receiver. An electronic device, which is improved in that: the electronic device includes a processor, and the processor is used to implement the blockchain-based Currency trading methods.

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