CN112132558B - Digital currency transaction method and device based on intelligent contract and electronic equipment - Google Patents

Abstract

This application provides a smart contract-based digital currency transaction method, device, and electronic equipment, which are applied in the field of smart contract technology, wherein the method includes: when the central bank smart contract receives a digital currency transaction request sent, the digital currency transaction The request is sent to the CA organization certification smart contract, and the CA organization certification smart contract is used to automatically query the contract conditions of the target contract, and execute the target smart contract when the contract conditions are satisfied, realizing the automatic execution of digital currency transactions. In addition, the smart contract certified by the CA agency actively inquires the contract condition information stipulated in the target smart contract, and then executes the target smart contract based on the contract condition information of the target smart contract obtained from the query, and carries out the delivery of digital currency, thus improving the digital currency. The efficiency of currency delivery.

Description

Smart contract-based digital currency transaction method, device and electronic equipment

technical field

The present application relates to the technical field of smart contracts, and in particular, the present application relates to a digital currency transaction method, device and electronic equipment based on smart contracts.

Background technique

Digital currency is issued by the central bank or authorized by the central bank. It is a legal currency in the form of an encrypted number string representing a specific amount, including the amount of digital currency, the identity of the issuer and the identity of the owner. The digital currency is stored in the digital wallet of the central bank . How to realize the automated transaction of digital currency has become a problem.

Contents of the invention

This application provides a digital currency transaction method, device and electronic equipment based on smart contracts, which are used to realize the automatic processing of digital currency transactions. The technical solutions adopted in this application are as follows:

In the first aspect, a digital currency transaction method based on a smart contract is provided, which is applied to a smart contract certified by a CA institution. The method includes,

Receive the digital currency transaction request sent by the smart contract of the central bank, and the digital currency transaction request includes the ID information of the target smart contract;

Query the contract condition information of the target smart contract;

Determine whether the contract conditions of the target smart contract are met based on the contract condition information of the target smart contract obtained by query, and determine whether to execute the target smart contract based on the result information of whether the contract conditions are met.

Optionally, the target smart contract includes digital currency delivery quantity, digital currency payer, and digital currency receiver, and the execution of the target smart contract includes:

When the contract conditions of the target smart contract are met, the owner of the digital currency of the corresponding delivery quantity of the digital currency payer is changed to the digital currency receiver.

Optionally, querying the contract condition information of the target smart contract includes:

Query the contract condition information of the target smart contract through the remote call module of the smart contract certified by the CA organization.

In the second aspect, a digital currency transaction method based on smart contracts is provided, which is applied to central bank smart contracts, including:

Receive a digital currency transaction request, the digital currency transaction request includes the ID information of the target smart contract;

The digital currency transaction request is forwarded to the CA agency certification smart contract, and the CA agency certification smart contract is used to query the contract condition information of the target smart contract, and determine whether the contract condition of the target smart contract is met based on the contract condition information of the target smart contract obtained from the query , and determine whether to execute the target smart contract based on the result information of whether the contract conditions are achieved.

In the third aspect, a smart contract-based digital currency transaction device is provided, the device includes:

The first receiving module is used to receive the digital currency transaction request sent by the smart contract of the central bank, and the digital currency transaction request includes the ID information of the target smart contract;

The query module is used to query the contract condition information of the target smart contract;

The execution module is configured to determine whether the contract condition of the target smart contract is fulfilled based on the contract condition information of the target smart contract obtained by query, and determine whether to execute the target smart contract based on the result information of whether the contract condition is fulfilled.

Optionally, the target smart contract includes the digital currency delivery quantity, the digital currency payer, and the digital currency receiver; the execution module is specifically used to transfer the corresponding delivery quantity of the digital currency payer to the target smart contract when the contract conditions of the target smart contract are met. The owner of is changed to the recipient of digital currency.

Optionally, the query module is specifically used to query the contract condition information of the target smart contract through the remote calling module of the smart contract certified by the CA institution.

In the fourth aspect, a digital currency transaction device based on smart contracts is provided, which is applied to central bank smart contracts, including:

The second receiving module is used to receive a digital currency transaction request, and the digital currency transaction request includes the ID information of the target smart contract;

The forwarding module is used to forward the digital currency transaction request to the CA organization certification smart contract, and the CA organization certification smart contract is used to query the contract condition information of the target smart contract, and determine the target smart contract based on the contract condition information of the target smart contract obtained from the query Whether the contract conditions are met, and determine whether to execute the target smart contract based on the result information of whether the contract conditions are met.

In a fifth aspect, an electronic device is provided, and the electronic device includes:

one or more processors;

memory;

One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs are configured to: perform the first aspect and/or the second The smart contract-based digital currency transaction method shown in the aspect.

In the sixth aspect, a computer-readable storage medium is provided. The computer storage medium is used to store computer instructions. When it is run on a computer, the computer can execute the smart contract-based method of digital currency transactions.

This application provides a digital currency transaction method, device, and electronic equipment based on a smart contract. This application receives a digital currency transaction request sent by a central bank smart contract through a smart contract certified by a CA institution. The digital currency transaction request includes the target smart contract. ID information; query the contract condition information of the target smart contract; determine whether the contract condition of the target smart contract is achieved based on the contract condition information of the target smart contract obtained by query, and determine whether to execute the target smart contract based on the result information of whether the contract condition is achieved. That is, when the smart contract certified by the CA organization receives the digital currency transaction request sent by the smart contract of the central bank, it will automatically query the contract conditions of the target contract, and execute the target smart contract when the contract conditions are met, realizing the automatic execution of digital currency transactions. In addition, instead of passively waiting for parties to the contract or a third party to upload relevant contract condition data to the blockchain node, the smart contract actively queries the contract condition information stipulated in the target smart contract, and then based on the contract condition of the target smart contract obtained from the query The information is used to execute the target smart contract and carry out the delivery of digital currency, thereby improving the efficiency of digital currency delivery. Furthermore, the verification and execution of blockchain smart contracts rely on the supervision and automatic execution of other nodes in the blockchain. Smart contracts and blockchains are bound and used, and the application requirements of blockchain smart contracts are relatively high. The application realizes digital currency transactions based on non-blockchain smart contracts. Compared with realizing digital currency transactions through blockchain contracts, the realization of smart contracts certified by CA institutions is relatively simple.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and will become apparent from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic flow diagram of a smart contract-based digital currency transaction method according to an embodiment of the present application;

FIG. 2 is a schematic flow diagram of another smart contract-based digital currency transaction method according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a digital currency transaction device based on a smart contract according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another smart contract-based digital currency transaction device according to an embodiment of the present application;

FIG. 6 is an example diagram of a digital currency transaction process based on a smart contract certified by a CA authority according to an embodiment of the present application.

Detailed ways

Embodiments of the present application are described in detail below, and examples of each embodiment are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.

Those skilled in the art will understand that the singular forms "a", "an" and "the" used herein may also include plural forms unless otherwise stated. It should be further understood that the word "comprising" used in the description of the present application refers to the presence of features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, integers, Steps, operations, elements, components and/or groups thereof. The expression "and/or" used herein includes all or any elements and all combinations of one or more associated listed items.

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below in conjunction with the accompanying drawings.

Embodiment one

The embodiment of the present application provides a digital currency transaction method based on a smart contract, which is applied to a smart contract certified by a CA institution. As shown in Figure 1, the method may include the following steps:

Step S101, receiving the digital currency transaction request sent by the smart contract of the central bank, the digital currency transaction request includes the ID information of the target smart contract;

Step S102, query the contract condition information of the target smart contract;

Step S103, determine whether the contract condition of the target smart contract is fulfilled based on the contract condition information of the target smart contract obtained from the query, and determine whether to execute the target smart contract based on the result information of whether the contract condition is fulfilled.

Exemplarily, the digital currency smart contract system of the central bank initiates a digital currency transaction request, wherein the digital currency transaction request includes the ID information of the target smart contract; The ID information of the smart contract determines the contract execution conditions of the target smart contract, and then the callback function module of the CA organization authenticates the smart contract to query the execution information of the contract conditions from all parties to the contract, such as whether the seller sends out the goods, whether the buyer receives the goods, whether Purchase insurance from insurance agencies, among which, according to different application scenarios, the contract condition information will change accordingly; according to the contract condition information obtained from the query, if the seller has shipped the goods and the seller has purchased the corresponding insurance, it is judged that the buyer is satisfied The payment conditions, the seller satisfies the conditions for paying the insurance premium of the insurance agency, and then executes the target smart contract, the buyer pays the corresponding amount of digital currency to the seller, and the seller pays the corresponding amount of digital currency to the insurance company.

The embodiment of this application provides a digital currency transaction method based on a smart contract. The application receives a digital currency transaction request sent by a central bank smart contract through a smart contract certified by a CA institution. The digital currency transaction request includes the ID information of the target smart contract; Query the contract condition information of the target smart contract; determine whether the contract condition of the target smart contract is achieved based on the contract condition information of the target smart contract obtained by query, and determine whether to execute the target smart contract based on the result information of whether the contract condition is achieved. That is, when the smart contract certified by the CA organization receives the digital currency transaction request sent by the smart contract of the central bank, it will automatically query the contract conditions of the target contract, and execute the target smart contract when the contract conditions are met, realizing the automatic execution of digital currency transactions. In addition, instead of passively waiting for parties to the contract or a third party to upload relevant contract condition data to the blockchain node, the smart contract actively queries the contract condition information stipulated in the target smart contract, and then based on the contract condition of the target smart contract obtained from the query The information is used to execute the target smart contract and carry out the delivery of digital currency, thereby improving the efficiency of digital currency delivery. Furthermore, the verification and execution of blockchain smart contracts rely on the supervision and automatic execution of other nodes in the blockchain. Smart contracts and blockchains are bound and used, and the application requirements of blockchain smart contracts are relatively high. The application realizes digital currency transactions based on non-blockchain smart contracts. Compared with realizing digital currency transactions through blockchain contracts, the realization of smart contracts certified by CA institutions is relatively simple.

The embodiment of this application provides a possible implementation. Specifically, the target smart contract includes the digital currency delivery quantity, the digital currency payer, and the digital currency receiver. The execution of the target smart contract includes:

When the contract conditions of the target smart contract are met, the owner of the digital currency of the corresponding delivery quantity of the digital currency payer is changed to the digital currency receiver.

Specifically, when the contract conditions are met, the smart contract certified by the CA institution automatically modifies the owner of the corresponding delivery quantity of digital currency from the digital currency payer to the digital currency receiver.

For example, in the smart contract for the sale of goods, if the contract execution condition is that the seller has delivered the goods, the buyer will pay Party B a certain amount of digital currency; if the seller purchases insurance, the seller will pay the insurance agency a certain amount of digital currency. If the CA organization authenticates the smart contract and finds that the contract conditions have been met, the target smart contract will be automatically executed, and the owner of a certain amount of digital currency on the buyer will be changed to the seller, and the owner of a certain amount of digital currency on the seller will be changed to an insurance agency.

The embodiment of this application provides a possible implementation. Specifically, querying the contract condition information of the target smart contract includes:

Query the contract condition information of the target smart contract through the remote call module of the smart contract certified by the CA organization.

Specifically, the remote call module can be deployed in the smart contract certified by the CA organization to realize the query of contract condition information. Specifically, the remote calling module may be implemented based on the RPC communication mechanism. RPC refers to remote procedure call, that is to say, there are two servers A and B, and an application is deployed on server A. If you want to call the function/method provided by the application on server B, it cannot be called directly because it is not in the same memory space. You need to pass Network to express the semantics of the call and communicate the data of the call.

Embodiment two

The embodiment of this application provides a smart contract-based digital currency transaction method, which is applied to the smart contract of the central bank. As shown in Figure 2, the method may include the following steps:

Receive a digital currency transaction request, the digital currency transaction request includes the ID information of the target smart contract;

The digital currency transaction request is forwarded to the CA agency certification smart contract, and the CA agency certification smart contract is used to query the contract condition information of the target smart contract, and determine whether the contract condition of the target smart contract is met based on the contract condition information of the target smart contract obtained from the query , and determine whether to execute the target smart contract based on the result information of whether the contract conditions are achieved.

Exemplarily, as shown in Figure 6, the digital currency transaction process based on the smart contract certified by the CA institution,

Step S21, the central bank smart contract receives the digital currency transaction request from the wallet, and applies to the transaction smart contract system to execute the transaction smart contract according to the target smart contract ID in the wallet digital currency transaction request. Among them, the trading smart contract system can also belong to the smart contract of the central bank, or it can be two independent contracts.

Step S22, the transaction smart contract system calls the callback function code execution module, and passes in the smart contract ID to start the remote procedure call module.

Step S23, the remote procedure call module is used to connect the target smart contract ID to the bank gateway through remote call.

Step S24, the bank gateway calls the bank's smart contract module certified by the CA institution according to the target smart contract ID.

In step S25, the bank's smart contract module certified by the CA institution performs contract execution query and evidence status query (ie query of contract condition information) according to the target smart contract ID.

If the contract is executed, step S26 is executed;

If the execution of the contract is not completed, or there is an exception, execute step S27;.

Step S26, the bank's smart contract module certified by the CA institution returns the result of successful contract execution, and returns the bank gateway module, remote procedure call module, and callback function code execution module in turn. The digital currency smart contract system executes successfully. pay.

In step S27, the smart contract module of the bank certified by the CA institution returns the contract execution failure result, and then returns the bank gateway module, the remote procedure call module, and the callback function code execution module, and the execution of the digital currency smart contract system fails.

The embodiment of this application provides a digital currency transaction method based on smart contracts. When the smart contract of the central bank receives the digital currency transaction request sent, it sends the digital currency transaction request to the CA organization certification smart contract, and the CA organization certification smart contract uses In order to automatically query the contract conditions of the target contract, and execute the target smart contract when the contract conditions are met, the automatic execution of digital currency transactions is realized. In addition, instead of passively waiting for parties to the contract or a third party to upload relevant contract condition data to the blockchain node, the smart contract actively queries the contract condition information stipulated in the target smart contract, and then based on the contract condition of the target smart contract obtained from the query The information is used to execute the target smart contract and carry out the delivery of digital currency, thereby improving the efficiency of digital currency delivery.

Embodiment three

Fig. 3 is a smart contract-based digital currency transaction device provided by the embodiment of the present application, which is applied to a smart contract certified by a CA institution. The device 30 includes: a receiving module 301, a query module 302, and an execution module 303, wherein,

The receiving module 301 is used to receive the digital currency transaction request sent by the smart contract of the central bank, and the digital currency transaction request includes the ID information of the target smart contract;

Inquiry module 302, used to inquire about the contract condition information of the target smart contract;

The execution module 303 is configured to determine whether the contract condition of the target smart contract is fulfilled based on the contract condition information of the target smart contract obtained from the query, and determine whether to execute the target smart contract based on the result information of whether the contract condition is fulfilled.

The embodiment of this application provides a digital currency transaction device based on a smart contract. The application receives a digital currency transaction request sent by a central bank smart contract through a smart contract certified by a CA institution. The digital currency transaction request includes the ID information of the target smart contract; Query the contract condition information of the target smart contract; determine whether the contract condition of the target smart contract is achieved based on the contract condition information of the target smart contract obtained by query, and determine whether to execute the target smart contract based on the result information of whether the contract condition is achieved. That is, when the smart contract certified by the CA organization receives the digital currency transaction request sent by the smart contract of the central bank, it will automatically query the contract conditions of the target contract, and execute the target smart contract when the contract conditions are met, realizing the automatic execution of digital currency transactions. In addition, instead of passively waiting for parties to the contract or a third party to upload relevant contract condition data to the blockchain node, the smart contract actively queries the contract condition information stipulated in the target smart contract, and then based on the contract condition of the target smart contract obtained from the query The information is used to execute the target smart contract and carry out the delivery of digital currency, thereby improving the efficiency of digital currency delivery. Furthermore, the verification and execution of blockchain smart contracts rely on the supervision and automatic execution of other nodes in the blockchain. Smart contracts and blockchains are bound and used, and the application requirements of blockchain smart contracts are relatively high. The application realizes digital currency transactions based on non-blockchain smart contracts. Compared with realizing digital currency transactions through blockchain contracts, the realization of smart contracts certified by CA institutions is relatively simple.

The embodiment of the present application provides a possible implementation. Specifically, the target smart contract includes the digital currency delivery amount, the digital currency payer, and the digital currency receiver; the execution module is specifically used when the contract conditions of the target smart contract are met. , change the owner of the corresponding delivery amount of digital currency from the digital currency payer to the digital currency receiver.

The embodiment of the present application provides a possible implementation mode, the query module, which is specifically used to query the contract condition information of the target smart contract through the remote calling module of the smart contract certified by the CA institution.

The device in the embodiment of the present application can execute the method shown in the first embodiment of the present application, and the effect achieved is similar, so details are not repeated here.

Embodiment four

Fig. 5 is a smart contract-based digital currency transaction device provided by the embodiment of the present application, which is applied to the smart contract of the central bank. The device 50 includes: a second receiving module 501 and a forwarding module 502, wherein,

The second receiving module 501 is configured to receive a digital currency transaction request, and the digital currency transaction request includes the ID information of the target smart contract;

The forwarding module 502 is used to forward the digital currency transaction request to the CA institution certification smart contract, and the CA institution certification smart contract is used to query the contract condition information of the target smart contract, and determine the target smart contract based on the contract condition information of the target smart contract obtained from the query. Whether the contract conditions of the contract are met, and based on the result information of whether the contract conditions are met, it is determined whether to execute the target smart contract.

The embodiment of this application provides a digital currency transaction device based on smart contracts. When the central bank smart contract receives the digital currency transaction request sent, it sends the digital currency transaction request to the CA organization to authenticate the smart contract. The CA organization authenticates the smart contract. In order to automatically query the contract conditions of the target contract, and execute the target smart contract when the contract conditions are met, the automatic execution of digital currency transactions is realized. In addition, instead of passively waiting for parties to the contract or a third party to upload relevant contract condition data to the blockchain node, the smart contract actively queries the contract condition information stipulated in the target smart contract, and then based on the contract condition of the target smart contract obtained from the query The information is used to execute the target smart contract and carry out the delivery of digital currency, thereby improving the efficiency of digital currency delivery.

Embodiment five

An embodiment of the present application provides an electronic device. As shown in FIG. 4 , the electronic device 40 shown in FIG. 4 includes: a processor 401 and a memory 403 . Wherein, the processor 401 is connected to the memory 403 , such as through a bus 402 . Further, the electronic device 40 may further include a transceiver 404 . It should be noted that, in practical applications, the transceiver 404 is not limited to one, and the structure of the electronic device 40 does not limit the embodiment of the present application. Wherein, the processor 401 is applied in the embodiment of the present application to realize the functions of the modules shown in FIG. 3 or FIG. 5 . Transceiver 404 includes a receiver and a transmitter.

The processor 401 may be a CPU, a general processor, DSP, ASIC, FPGA or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor 401 may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

Bus 402 may include a path for communicating information between the components described above. The bus 402 may be a PCI bus, an EISA bus, or the like. The bus 402 can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 4 , but it does not mean that there is only one bus or one type of bus.

Memory 403 can be ROM or other types of static storage devices that can store static information and instructions, RAM or other types of dynamic storage devices that can store information and instructions, and can also be EEPROM, CD-ROM or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be programmed by a computer Any other medium accessed, but not limited to.

The memory 403 is used to store the application program code for executing the solution of the present application, and the execution is controlled by the processor 401 . The processor 401 is configured to execute application program codes stored in the memory 403, so as to realize the functions of the device provided by the embodiment shown in FIG. 3 or FIG. 5 .

The embodiment of the present application provides an electronic device applicable to the above method embodiment, and the specific implementation manner and technical effect will not be repeated here.

Embodiment six

An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the smart contract-based digital currency transaction method shown in the above-mentioned embodiments is implemented.

The embodiment of the present application provides a computer-readable storage medium applicable to the above-mentioned method embodiment, and the specific implementation manner and technical effect will not be repeated here.

It should be understood that although the various steps in the flow chart of the accompanying drawings are displayed sequentially according to the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages may not necessarily be executed at the same time, but may be executed at different times, and the order of execution is also It is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

The above are only some implementations of the present application. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the application, and these improvements and modifications should also be considered as For the scope of protection of this application.

Claims (8)

1. A digital currency transaction method based on smart contracts, characterized in that, comprising: The central bank smart contract receives a digital currency transaction request, and the digital currency transaction request includes the ID information of the target smart contract; The central bank smart contract forwards the digital currency transaction request to the CA organization certification smart contract, and the CA organization certification smart contract is used to query the contract condition information of the target smart contract, and the contract of the target smart contract obtained based on the query The condition information determines whether the contract condition of the target smart contract is met, and determines whether to execute the target smart contract based on the result information of whether the contract condition is met; The CA organization authenticates the smart contract to receive the digital currency transaction request sent by the central bank smart contract, and the digital currency transaction request includes the ID information of the target smart contract; Query the contract condition information of the target smart contract; Determine whether the contract condition of the target smart contract is fulfilled based on the contract condition information of the target smart contract obtained by query, and determine whether to execute the target smart contract based on the result information of whether the contract condition is fulfilled. 2. The method according to claim 1, wherein the target smart contract includes digital currency delivery quantity, digital currency payer, and digital currency receiver, and executing the target smart contract includes: When the contract conditions of the target smart contract are satisfied, the owner of the digital currency of the corresponding delivery quantity of the digital currency payer is changed to the digital currency receiver. 3. The method according to claim 1, wherein said querying the contract condition information of the target smart contract comprises: Query the contract condition information of the target smart contract through the remote calling module of the smart contract certified by the CA institution. 4. A digital currency trading device based on smart contracts, characterized in that it includes: The second receiving module is used for the central bank smart contract to receive a digital currency transaction request, and the digital currency transaction request includes the ID information of the target smart contract; The forwarding module is used for the central bank smart contract to forward the digital currency transaction request to the CA organization authentication smart contract, and the CA organization authentication smart contract is used to query the contract condition information of the target smart contract, and based on the query obtained the The contract condition information of the target smart contract determines whether the contract condition of the target smart contract is met, and determines whether to execute the target smart contract based on the result information of whether the contract condition is met The receiving module is used for the CA organization to authenticate the smart contract to receive the digital currency transaction request sent by the central bank smart contract, and the digital currency transaction request includes the ID information of the target smart contract; A query module, configured to query contract condition information of the target smart contract; An execution module, configured to determine whether the contract condition of the target smart contract is fulfilled based on the contract condition information of the target smart contract obtained by query, and determine whether to execute the target smart contract based on the result information of whether the contract condition is fulfilled. 5. The device according to claim 4, wherein the target smart contract includes digital currency delivery quantity, digital currency payer, and digital currency receiver; the execution module is specifically used for when the target smart contract When the contract conditions are met, the owner of the digital currency of the corresponding delivery quantity of the digital currency payer is changed to the digital currency receiver. 6 . The device according to claim 4 , wherein the query module is specifically configured to query the contract condition information of the target smart contract through the remote calling module of the smart contract certified by the CA institution. 7. An electronic device, characterized in that it comprises: one or more processors; memory; one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, the one or more program programs are configured to: execute The smart contract-based digital currency transaction method according to any one of claims 1 to 3. 8. A computer-readable storage medium, characterized in that the computer storage medium is used to store computer instructions, and when it is run on a computer, the computer can execute the method described in any one of claims 1 to 3. A digital currency transaction method based on smart contracts.

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