TWI706252B - Programming question release, answer code release, answer code inspection method, device, system and computer equipment - Google Patents

Abstract

A method and system for program design question release, answer code release, and answer code verification are disclosed. The equipment of any IT organization that can access the blockchain network is called a node. In the blockchain network, any node can publish its own programming questions based on the blockchain protocol, that is to say, any node can construct a topic publishing transaction based on the programming topic created by itself, and then publish the topic The transaction is broadcast to other nodes. To obtain the topic release transaction, each node will write the topic release transaction into the blockchain based on the consensus mechanism between the nodes.

Description

Programming question release, answer code release, answer code inspection method, device, system and computer equipment

The embodiments of this specification relate to the field of information technology, and particularly relate to a method and system for issuing programming questions, issuing answer codes, and verifying answer codes.

At present, many Information Technology (IT) institutions at home and abroad (such as colleges and universities, computer schools, IT companies, etc.) generally build their own programming question bank for testing users (such as school students, current employees, Interviewer, etc.) programming level.

In practice, many IT organizations have the need to share each other's programming question bank. However, for any IT organization, how to prevent other IT organizations from modifying the programming problems created by the IT organization without authorization is a technical problem that needs to be solved urgently.

In order to solve the problem that programming problems shared by any IT organization to other IT organizations are easily modified by other IT organizations without authorization, the embodiments of this specification provide a programming problem publishing method and system. In addition, this manual The example also proposes a solution code release and solution code verification method and system.

The above technical solution is as follows: According to the first aspect of the embodiment of the present specification, a method for publishing a programming topic based on a blockchain is provided, including: a target node creates a programming topic to be published; the target node is a blockchain network Any node in the road; the target node constructs a topic publication transaction based on topic-related data, and broadcasts the topic publication transaction to the blockchain network; the topic-related data includes the programming topic; Each node of the topic publishing transaction is obtained, and the node writes the topic publishing transaction into the blockchain based on the consensus mechanism between the nodes.

According to the second aspect of the embodiments of the present specification, a method for publishing answer codes based on blockchain is provided, including: a target node obtains programming questions; the target node is any node in the blockchain network, and The programming question is issued by the method of the first aspect; the target node provides the programming question to the tested user for answering, and receives the answer code uploaded by the tested user; the target node is based on Answer relevant information, construct answer release transaction, and broadcast the answer release transaction to the blockchain network; the answer related information includes the question mark of the programming question, the answer code and the tested user For each node that obtains the answer release transaction, the node writes the answer release transaction into the blockchain based on the consensus mechanism between the nodes. According to the third aspect of the embodiments of this specification, a blockchain-based answer code verification method is provided, including: Obtain the module to obtain the answer code corresponding to the programming question and the user ID of the tested user who uploaded the answer code; the programming question is issued through the first aspect of the above method, and the answer code is through the above According to the method of the second aspect, the verification node is a node in the blockchain network that stores the solution verification data corresponding to the programming question; The verification node uses the stored answer verification data corresponding to the programming question to verify the answer code; If the test is passed, the verification node constructs a result issuance transaction based on the result-related data, and broadcasts the result issuance transaction to the blockchain network; the result-related data includes the title identification of the programming topic and The user identification; For each node that obtains the result publication transaction, the node writes the result publication transaction into the blockchain based on the consensus mechanism between the nodes. According to the fourth aspect of the embodiment of the present specification, there is provided a blockchain-based programming topic publishing system, including a blockchain network composed of multiple nodes; Any node creates a programming topic to be released; constructs a topic publishing transaction based on topic-related data, and broadcasts the topic publishing transaction to the blockchain network, and the topic-related data includes the programming topic; Each node that obtains the topic publishing transaction writes the topic publishing transaction into the blockchain based on the consensus mechanism between the nodes. According to the fifth aspect of the embodiment of this specification, a blockchain-based answer code issuing system is provided, including a blockchain network composed of multiple nodes; Any node obtains a programming topic; the target node is any node in the blockchain network, and the programming topic is issued through the method of the first aspect; the programming topic is provided to The tested user answers and receives the answer code uploaded by the tested user; builds an answer release transaction based on the answer related data, and broadcasts the answer release transaction to the blockchain network; wherein the answer is related The data includes the title identification of the programming question, the answer code and the user identification of the tested user; Each node that obtains the answer release transaction writes the answer release transaction into the blockchain based on the consensus mechanism between the nodes. According to the sixth aspect of the embodiments of this specification, a blockchain-based answer code verification system is provided, including a blockchain network composed of multiple nodes; The test node obtains the answer code corresponding to the programming question and the user ID of the tested user who uploaded the answer code. The programming question is issued through the first aspect of the above method, and the answer code is obtained through the above first aspect. Issued by the 2-mode method, the test node is a node in the blockchain network that stores the answer test data corresponding to the programming question; using the stored answer test data corresponding to the programming question, Check the answer code; if the check is passed, construct a result release transaction based on the result related data, and broadcast the result release transaction to the blockchain network; wherein the result related data includes the programming question The title identification of and the user identification; Each node that obtains the result publication transaction writes the result publication transaction into the blockchain based on the consensus mechanism between the nodes. In the technical solutions provided by the embodiments of this specification, the equipment of any IT organization that can access the blockchain network is called a node. In the blockchain network, any node can publish its own programming questions based on the blockchain protocol, that is to say, any node can construct a topic publishing transaction based on the programming topic created by itself, and then publish the topic The transaction is broadcast to other nodes. To obtain the topic release transaction, each node will write the topic release transaction into the blockchain based on the consensus mechanism between the nodes. In this way, on the one hand, any IT organization can share its own programming problems with other IT organizations; on the other hand, the process of issuing programming problems at any node is restricted by the blockchain agreement, and programming problems are never The entire process from creation to being written into the blockchain is difficult to be tampered with, and programming topics are also difficult to be tampered with after being written into the blockchain. In addition, in the embodiment of this specification, any node can extract programming questions from the programming questions shared between the nodes to provide answers to the tested user, so as to test the programming level of the tested user. In addition, the answer code uploaded by the tested user will also be encapsulated in the answer release transaction and written to the blockchain for publicity. In addition, in the embodiment of this specification, for any node, if the node stores the solution test data corresponding to a certain programming problem, then the node can also give the solution to the programming problem given by the tested user The code is checked to determine whether the tested user passes the test. Moreover, if the tested user passes the test, the node will also construct a result release transaction and broadcast it, so that the message that the tested user passed the test can be written into the blockchain for publicity. It can be seen that the present invention actually provides a program design level test program based on blockchain, including the stages of program design question release, answer code release, and answer code verification. The program design questions created by IT organizations and the tested users are targeted The answer records of programming questions and the test results of the tested users are written into the blockchain for publicity, making the entire programming level testing process open and transparent. It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the embodiments of this specification. In addition, any embodiment in the embodiments of this specification does not need to achieve all the above-mentioned effects.

Here, a more detailed description of the business scenario (that is, the programming degree test) applied by the present invention will be given first. Take information technology company A as an example. If company A wants to know the programming level of a user (such as an employee, interviewer), then company A can extract any programming question from its own programming question bank and provide it to the user. The user answers according to the programming question, gives an answer code to answer the programming question, and uploads the answer code to company A's online questioning system. Company A’s online questioning system stores the answer test data (specifically standard input data and standard output data) corresponding to each programming question in the above-mentioned programming question bank, which is used to verify the correctness of the answer code. Specifically, the online problem determination system of company A will input the standard input data corresponding to the programming problem into the solution code and run the solution code, and then determine whether the solution code can output the standard output data corresponding to the programming problem. If so, The user is deemed to pass the test, otherwise, the user is deemed not to pass the test. In practice, many IT organizations have the need to share each other's programming question bank. For this reason, in the prior art, for any IT organization, the IT organization generally uses a crawler program to crawl programming questions from the programming question bank of other IT organizations, and provides the crawled programming questions to the tested user for answers. Then, the IT organization also needs to send the answer code given by the tested user to the online judging system of the IT organization that created the programming problem for verification. However, this method has the following disadvantages: 1. After the IT organization crawls the programming problems of other IT organizations through the crawler program, they sometimes make some inappropriate modifications to the programming problems without authorization. This aspect cannot well protect the rights and interests of the IT organizations that create programming problems. On the other hand, the answer code given by the tested user for the modified programming problem often does not match the programming problem before the modification, and the online judging system uses the solution adapted to the programming problem before the modification Check the data to test whether the code is correct, so that the test results cannot accurately reflect the programming level of the tested user. 2. Once the database of other IT organizations is inaccessible, the IT organization cannot crawl programming problems of other structures through crawlers. In other words, this way of sharing programming questions is not always effective. For this reason, in the embodiments of this specification, any IT organization can use the blockchain protocol to publish its own programming topics to the blockchain, which is equivalent to sharing the programming topics created by itself with other IT Organizations, and there is no need to worry that other IT organizations will modify the programming topic. In order to enable those skilled in the art to better understand the technical solutions in the embodiments of this specification, the technical solutions in the embodiments of this specification will be described in detail below in conjunction with the drawings in the embodiments of this specification. Obviously, the described implementation The examples are only a part of the embodiments of this specification, not all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art should fall within the scope of protection. The following describes in detail the technical solutions provided by the embodiments of this specification in conjunction with the accompanying drawings. Figure 1 is a schematic flow chart of a method for publishing programming questions based on blockchain provided by an embodiment of this specification, including the following steps: S100: The target node creates a programming problem to be released. In the embodiment of this specification, the equipment of each IT organization can access the blockchain network and become a node in the blockchain network. In other words, each node in the blockchain network corresponds to each IT organization that wants to share programming issues with each other. In step S100, the target node may be any node in the blockchain network. In other words, the equipment of any IT organization can create programming problems and publish them through the method shown in Figure 1. It should be noted that the programming problem created by the target node can be specifically the programming problem that the target node receives and uploads from the IT organization that controls the target node, or the target node creates a model based on the preset programming problem and automatically creates the program. Design topic. S102: The target node constructs a topic release transaction based on topic related materials. It should be noted that the transaction described in this article refers to the data structure specified in the blockchain agreement. In the blockchain protocol, a transaction means that a node creates a piece of data through the installed blockchain client and needs to be finally written into the blockchain. In other words, according to the blockchain agreement, all data that needs to be written to the blockchain for publicity needs to be encapsulated into a transaction data structure. In step S102, the topic-related data includes at least the programming topic created by the target node in step S100. The target node constructs a topic publishing transaction based on the topic-related data, which actually encapsulates the topic-related data into a data structure specified by the blockchain agreement of the transaction. S104: The target node broadcasts the topic release transaction to the blockchain network. In step S104, the target node broadcasts the topic publishing transaction to the blockchain network, which is actually broadcasting the topic publishing transaction to other nodes, which is equivalent to sharing the programming topic with other nodes. S106: For each node that obtains the topic publishing transaction, the node writes the topic publishing transaction into the blockchain based on the consensus mechanism between the nodes. For each node that obtains the topic publishing transaction, the node may perform legality verification on the topic publishing transaction before writing the topic publishing transaction to the blockchain. The items for the legality verification of the subject issue transaction can be specified according to business needs. For example, assuming that not every node has the authority to issue programming topics, then the node identification in the topic publication transaction can be used to determine whether the node corresponding to the node identification (ie the target node) has the authority to publish programming topics Permission, if there is no permission, refuse to write the subject issue transaction to the blockchain. In step S106, the consensus mechanism between the nodes ensures the consistency of the data written by each node to the blockchain each time. Therefore, even if a node arbitrarily modifies the programming topic encapsulated in the topic publishing transaction, thereby changing the content of the topic publishing transaction, the modified topic publishing transaction will not be written into the blockchain by most nodes. In this way, the programming topics created by the target node can always be written into the blockchain without modification, thereby completing the sharing of programming topics. In addition, the distributed storage feature of the blockchain makes it difficult to tamper with the issue of the transaction after being written into the blockchain. It should be noted that for the answer release transactions and result release transactions that will appear in the following text, for the same reason, the content of these transactions is also difficult to tamper with. Through the method shown in Figure 1, any IT organization's equipment can access the blockchain network called a node. In the blockchain network, any node can publish its own programming questions based on the blockchain protocol, that is to say, any node can construct a topic publishing transaction based on the programming topic created by itself, and then publish the topic The transaction is broadcast to other nodes. To obtain the topic release transaction, each node will write the topic release transaction into the blockchain based on the consensus mechanism between the nodes. In this way, on the one hand, any IT organization can share its own programming problems with other IT organizations; on the other hand, the process of issuing programming problems at any node is restricted by the blockchain agreement, and programming problems are never The entire process from creation to being written into the blockchain is difficult to be tampered with, and programming topics are also difficult to be tampered with after being written into the blockchain. In addition, in the embodiment of this specification, the topic-related data may also include the node identification of the target node. This means that the target node will also encapsulate its own node ID into the topic release transaction, and then write it into the blockchain for publicity. In this way, it is possible to clearly share the creators of each programming problem with each IT organization, and protect the rights and interests of the IT organization that creates the programming problem. In addition, in practical applications, because the data storage method of the blockchain is more complicated, when a node wants to retrieve a programming topic from the programming topic written in the blockchain, the operation is more complicated. For this reason, in the embodiment of the present specification, for each node that obtains the topic publishing transaction, the node may create a topic storage address and store the topic related data in the topic storage address. This is equivalent to storing programming questions in a simple way. It should be noted that for any topic publishing transaction, the transaction can be published according to the topic written in the blockchain to verify whether the programming topic stored in the topic storage address has been tampered with. Through the above method, the node can be more convenient when it wants to retrieve a certain programming topic. Further, the node can specifically store the topic smart contract encapsulating the topic related data into the topic storage address. In this case, the topic storage address is actually the contract identifier of the topic smart contract. Smart contracts are a data structure naturally supported by many blockchain protocols (such as Ethereum), and many blockchain protocols also naturally support quick calls of smart contracts. Therefore, the programming questions can be stored in the data structure of the smart contract, so that the programming questions can be quickly retrieved to test the programming level by calling the smart contract. According to the programming question publishing method shown in Figure 1, the embodiment of this specification further provides a blockchain-based solution code publishing method, as shown in Figure 2, including the following steps: S200: The target node obtains programming questions. The target node is any node in the blockchain network. In practical applications, when any IT organization wants to test the programming level of the tested user, it can trigger the target node under its control to obtain programming questions. The programming topic acquired by the target node is published based on the programming topic publishing method shown in Figure 1. Specifically, the target node can read the programming topic from any topic publishing transaction in the blockchain. Or, if the topic related data packaged by the topic publishing exchange is also stored in a certain topic storage address, then the target node can also obtain the programming topic from the topic storage address. When using this method to obtain programming questions, it is faster. Further, if the topic related data is stored in the topic storage address in the form of a smart contract (ie, topic smart contract), the target node can call the topic smart contract to obtain the programming topic. S202: The target node provides the programming question to the tested user for answering, and receives the answer code uploaded by the tested user. S204: The target node constructs an answer release transaction based on answer related materials. In the embodiment of this specification, the answer-related data includes at least the question mark of the programming question, the answer code and the user mark of the tested user. Wherein, if the target node reads a programming topic from any topic issuance transaction in the blockchain, then the topic identification of the programming topic is the transaction hash of the topic issuance transaction; if the target node is from If any problem storage address acquires a programming problem, the problem of the programming problem is identified as the storage address. Further, the target node may check whether the answer code has a compilation or running problem, if the check is passed, the answer issuance transaction will be constructed, if the check is not passed, it will refuse to construct the answer issuance transaction. S206: The target node broadcasts the answer release transaction to the blockchain network. S208: For each node that obtains the answer publishing transaction, the node writes the answer publishing transaction into the blockchain based on the consensus mechanism between the nodes. For each node that obtains the answer issuance transaction, the node may perform legality verification for the answer issuance transaction before writing the answer issuance transaction into the blockchain. The legality verification items for the answer release transaction can be specified according to business needs. For example, assuming that the format of the answer code is specified in advance, the format of the answer code in the answer issuance transaction can be verified, and if the format does not meet the requirements, the answer issuance transaction is refused to be written into the blockchain. In step S208, it is equivalent to publicizing the identity information of the tested user, the identification information of the programming question answered by the tested user, and the answer code given by the tested user to each node. In addition, in order to facilitate the node to quickly retrieve the answer code of the tested user for verification, in the embodiment of this specification, each node can also create an answer storage address, and store the answer-related information in the answer storage location site. Further, each node can store the solution smart contract encapsulating the solution-related data in the solution storage address. According to the method for issuing programming questions shown in FIG. 1 and the method for issuing answer codes shown in FIG. 2, the embodiment of this specification further provides a method for verifying answer codes based on blockchain, as shown in FIG. 3, which includes the following steps: S300: The inspection node obtains the answer code corresponding to the programming question and the user identification of the tested user who uploaded the answer code. In the embodiment of this specification, the verification node stores a node of the solution verification data corresponding to the programming question. The solution test data is data used to test the correctness of the solution code given to solve the programming problem. As mentioned above, the answer test data generally includes standard input data and standard output data. The check node is generally a node where the programming problem is created. Of course, the node that creates the programming problem can also distribute the solution test data corresponding to the programming problem to at least one other node. In this way, the verification node may also be a node that stores the solution verification data in addition to the node that creates the programming question. In the embodiment of this specification, the inspection node can determine the question mark corresponding to the answer inspection data according to any stored answer inspection data. Then, the answer publishing transaction containing the question identifier is found from the query in the blockchain, and the answer code and the user identifier are read from the answer publishing transaction. Further, the inspection node may also query the answer storage address where the question mark is stored, and obtain the answer code and user identification from the answer storage address. Furthermore, the inspection node can query the topic smart contract encapsulated with the topic identifier, and call the topic smart contract to obtain the corresponding answer code and user identifier. S302: The checking node uses the stored solution checking data corresponding to the programming question to check the solution code. S304: If the inspection is passed, the inspection node constructs a result release transaction based on the result related data. In the embodiment of this specification, if the verification node passes the verification of the answer code, the verification message can be published on the blockchain. In this case, the result-related data actually includes the title identification of the programming topic and the user identification, and the meaning of the result publishing transaction is, for example, "User Zhang San answered the question 1 correctly." Further, if the verification node fails the verification of the answer code, it can also publish the message that the verification fails on the blockchain. In this case, the meaning of the result release transaction may be that the inspection passes or the inspection fails. In order to distinguish, the result-related data also needs to include the result of the test passed or the result of the test failed. S306: Broadcast the result release transaction to the blockchain network. S308: For each node that obtains the result publishing transaction, the node writes the result publishing transaction into the blockchain based on the consensus mechanism between the nodes. For each node that obtains the result issuance transaction, the node may perform legality verification for the result issuance transaction before writing the topic issuance transaction to the blockchain. The items for legality verification of the result release transaction can be specified according to business needs. For example, assuming that only the node that created the programming question has the authority to check the answer code corresponding to the programming question, then it can be judged whether the verification node that broadcasts the result release transaction has the verification authority, if it does not have the authority, it is rejected Write the result release transaction to the blockchain. In step S308, it is equivalent to publicizing the identity information of the tested user, the identification information of the programming question answered by the tested user, and the result of whether the tested user passed the test to each node. In addition, in order to facilitate the nodes to quickly retrieve the test results of the tested user for review, in the embodiment of this specification, each node can also create a result storage address, and store the result-related data in the result storage location. site. Further, each node can store the result smart contract encapsulating the result related data into the result storage address. In addition, in practice, the tested user may answer more than one programming question and upload more than one answer code. In this case, for each node, the node can store the results of the tested user's answering multiple programming questions in the same result storage address, which is convenient for statistics and reference. Specifically, in the embodiments of this specification, for each node that obtains the result publication transaction, if the node obtains other result publication transactions associated with the result publication transaction, it is based on the consensus mechanism between the nodes, The other result issuance transaction is written into the blockchain, where the other result issuance transaction is constructed based on the user ID and other topic IDs. Then, the node issues a transaction according to the other results, and stores the other topic identifiers in the result storage address. In other words, the result release transaction can be regarded as the result of the first programming question answered by the tested user, and other result release transactions can be regarded as the result of other programming questions answered by the tested user later. produced. For the results of other programming questions that the tested user subsequently answers, there is no need to recreate the result storage address for storage, but directly save it to the previously created result storage address. In this way, each tested user has a unique result storage address corresponding to him, which is used to record his answer. In addition, it should be noted that in the method shown in FIG. 1, there may be more than one check node to check the problem-solving code. In this case, for each check node, the check node obtains the answer code corresponding to the programming question and the user ID of the tested user who uploaded the answer code; then uses the stored answer check corresponding to the programming question Data, check the answer code; if the answer code passes the check, construct a result release transaction based on the result related data, and broadcast the result release transaction to the blockchain network. Based on this, for each node, when it is determined that the number of result publishing transactions obtained is a specified number, the node can write any result publishing transaction obtained to the blockchain based on the consensus mechanism between the nodes. Wherein, the specified number is not greater than the number of inspection nodes. In addition, in the embodiment of this specification, there are three types of transactions, namely, topic release transactions, answer release transactions, and result release transactions. Among them, for any type of transaction, creating a storage address and storing it in the relevant information packaged by that type of exchange can be regarded as an execution operation for that type of transaction. Obviously, no matter what kind of transaction mentioned above, the execution result of executing that kind of transaction will only affect one storage address. Therefore, the three types of transactions in the embodiments of this specification are all suitable for execution using the parallelized transaction execution methods given below. This parallelized transaction execution method will be introduced below. For common blockchain application scenarios, when consensus between nodes is required, each node will select nodes that have the authority to package several transactions to be executed into blocks based on the consensus algorithm, that is, the accounting node. After the consensus, the billing node retrieves a number of transactions to be executed from the cache and packs them into blocks, and broadcasts the blocks to other nodes. Subsequently, for each node, on the one hand, the node will execute each transaction from first to last according to the order in which each transaction in the block is initiated, and on the other hand, it will write the block into the blockchain . Generally, the way in which nodes execute each transaction in a block one by one from first to last is called serialized transaction execution. The reason for adopting this serialized transaction execution method is that in common blockchain application scenarios, the execution of a transaction sometimes updates the information stored on more than one storage address. If the serialization is not used Listed transaction execution methods are prone to some transaction execution failures. However, in some blockchain application scenarios, there is no transaction that updates information stored on more than one storage address. In these blockchain application scenarios, the use of the serialized transaction execution method described above will result in lower transaction execution efficiency. Next, taking the blockchain agreement of Ethereum as an example, the reasons for the serialized transaction execution method will be explained in detail. It is worth emphasizing that in other blockchain protocols besides Ethereum, the reasons for adopting serialized transaction execution methods are also similar. In Ethereum, there are external accounts and contract accounts. The external account is used to store the ether balance of the user. The external account is essentially a storage address where the balance information is stored. The contract account is used to store the smart contract created by the user. The contract account is essentially a storage address where the smart contract code is stored. In Ethereum, there are generally two types of transactions, namely, transfer transactions from external accounts to other accounts (either external accounts or contract accounts), and contract creation transactions for external accounts to create contract accounts. The execution of the transfer transaction will generally update the information stored on more than one storage address. Specifically, the execution of a transfer transaction usually changes the balances of the two accounts (that is, the balance information stored on the two account addresses), that is, the transfer amount is deducted from the balance of the transfer account and added to the balance of the collection account Increase the transfer amount. The premise that a transfer transaction can be executed is that the balance of the transfer account is not less than the transfer amount. In practical applications, the transfer account in a certain transfer transaction (denoted as transfer transaction A) may be the receiving user in another previous transfer transaction (denoted as transfer transaction B). If the transaction is not executed from first to last in the order in which the transaction is initiated, the following situation may occur, that is, the transfer transaction B is not executed, resulting in the transfer account in the transfer transaction A not having sufficient balance for the transfer. Because of this, all blockchain application scenarios related to transfer transactions have to adopt serialized transaction execution methods to ensure that transactions can be executed smoothly. The execution of the contract creation transaction is actually to create a contract account, that is, create a storage address, and store the smart contract code into the created storage address. Obviously, the execution of the contract creation transaction will only affect one storage address. In addition, blockchain application scenarios are diverse. In some blockchain application scenarios, it can be expanded based on Ethereum to develop new types of transactions. The execution of such transactions may only affect one storage location. site. For example, the use of blockchain for content storage. The execution of a deposit certificate transaction is essentially to create a storage address and store the content of the certificate to be deposited into the created storage address. Based on the above, this article proposes a method for parallel execution of blockchain transactions, specifically for a certain type of blockchain application scenario, in which the execution result of each transaction will only affect one storage address. Fig. 4 is a schematic flowchart of a method for parallel execution of blockchain transactions provided by an embodiment of the specification, including the following steps: S400: For each node in the blockchain network, the node obtains the block to be written. In the embodiment of this specification, the block to be written is actually a block packaged by the accounting node after the consensus of each node. The accounting node broadcasts the block to be written to other nodes. As we all know, in the blockchain agreement, on the one hand, each node needs to execute each transaction in the block to be written, and on the other hand, it needs to write the block to be written into the blockchain for publicity. Once the block to be written is written into the blockchain, it is equivalent to publicizing each transaction in the block to be written. The transaction published on the blockchain can be used to check whether the corresponding transaction execution result is correct to prevent nodes from doing evil. In step S400, for each node, if the node is a billing node, the method for the node to obtain the block to be written may specifically be to fetch several transactions from its own cache and pack it into the area to be written Block; if the node is not a billing node, then the method for the node to obtain the block to be written may specifically be to receive the block to be written broadcast by the billing node. It is worth emphasizing that for each transaction in the block to be written, the execution result of the transaction is to create a storage address and store the information, or update the information stored on a storage address (to a storage Address to save information or modify the information stored on a storage address). In other words, the execution result of each transaction in the block to be written will only affect one storage address. For example, a contract creation transaction to create a contract account is a transaction in which the execution result is to create a storage address and store information. The topic release transaction and answer release transaction mentioned above are also transactions where the execution result is to create a storage address and store information. For another example, in some blockchain application scenarios, it is necessary to store the shopping records of each user. Then, you need to create a record storage address corresponding to each user in the database. When the target user makes a purchase, a shopping record will be generated, and any node in the blockchain network will build a record and record the transaction based on the shopping record and broadcast it. Then, for each node, the node will execute the record deposit transaction at the appropriate time (that is, when the record deposit transaction is packaged into the module to be written and broadcast to each node), that is, the purchase record is stored in the target The record storage address corresponding to the user. Obviously, multiple shopping records generated by the target user's multiple purchases will be stored in the record storage address corresponding to the target user. Therefore, the above-mentioned record-and-certificate transaction is a transaction that is executed as a result of updating the information stored on a storage address. The result release transaction mentioned above is also a transaction that is executed as a result of updating the information stored on a storage address. S402: Read each transaction from the block to be written, and organize each transaction into N transaction queues. In the prior art, each node usually adopts a serialized transaction execution method to execute each transaction in the block to be written. As shown in FIG. 5, the so-called serialized transaction execution mode means that each node executes each transaction in the block to be written one by one in a certain first order. In the embodiment of this specification, each transaction in the block to be written is divided into N groups, where N is a natural number greater than 1. Then, for each group, arrange the transactions in this group into a transaction queue. This manual does not specifically limit the order of transactions in each transaction queue. S404: For each transaction queue at the same time, execute each transaction in the transaction queue sequentially from first to last. In step S404, the transaction execution is actually started for each transaction queue in parallel at the same time. Specifically, for each transaction queue, each transaction in the transaction queue is actually executed serially. As shown in Figure 6. The so-called "simultaneous" means that the node starts to execute each transaction in the transaction queue at the same time. It is equivalent to that the node creates N transaction execution processes at the same time, and each transaction process is responsible for executing transactions in a transaction queue. Comparing the two transaction execution methods shown in Figure 5 and Figure 6, it is obvious that by adopting the transaction execution method shown in Figure 6, more transactions can be executed within a unit time. S406: Write the block to be written into the blockchain. In the embodiment of this specification, for each node, step S406 may be executed after step S404 is executed; or step S406 may not be executed after step S404 is executed. Through the method of parallel execution of blockchain transactions shown in Figure 4, if each transaction to be written in the block is not a transaction that updates information stored on more than one storage address, then the blockchain network Each node in the road can organize the transactions to be written in the block into at least two transaction queues, and then start to execute the transactions in each transaction queue at the same time. In this way, each node can execute a larger number of transactions per unit time, which improves transaction execution efficiency. In addition, in the embodiment of this specification, the number of transactions corresponding to each transaction queue (that is, the number of transactions in each transaction queue) can be relatively close. In this way, when transactions are executed for each transaction queue while being parallelized, the number of transactions executed by each execution process is relatively close, and some processes will not be idle and some processes will be overloaded. This also means that a node can execute as many transactions as possible within a unit time. Specifically, it can be set that the variance calculated based on the number of transactions corresponding to each transaction queue is not greater than a specified threshold. The smaller the variance calculated based on the number of transactions corresponding to each transaction queue, the closer the number of transactions corresponding to each transaction queue is. In addition, in the embodiments of this specification, the Ethereum protocol can be specifically used to construct a blockchain network. In Ethereum, a virtual machine program is installed on each node to provide a running environment for the realization of the Ethereum protocol. Usually, a virtual machine program is used to execute a blockchain process. In the embodiment of this specification, since more than one transaction queue needs to be simultaneously executed and more than one blockchain process is executed in parallel, more than one virtual machine program needs to be pre-deployed on each node. Specifically, if the transactions to be written in the block need to be organized into N transaction queues, then N virtual machine programs need to be deployed on each node in advance. In this way, in step S404, a one-to-one correspondence between the pre-deployed N virtual machine programs and N transaction queues can be established; at the same time, for each transaction queue, through the virtual machine program corresponding to the transaction queue, Each transaction in the transaction queue is executed sequentially from first to last. In addition, in the embodiments of this specification, generally, the transactions to be written in the block include both the first type of transaction and the second type of transaction. Among them, the first type of transaction refers to a transaction whose execution result is to update information stored on a storage address; the second type of transaction refers to a transaction whose execution result is to create a storage address and store the information. Obviously, there may be more than one type 1 transaction in the block to be written that will update the information stored on the same storage address. When a node executes each type 1 transaction, it often needs to access the storage address for the type 1 transaction currently executed. In this case, when the node executes the transaction to be written in the block, if it can perform centralized batch execution of all the first type transactions corresponding to the same storage address, then only one access to the same storage address is required That is, this will significantly increase the speed at which nodes execute transactions. Specifically, in step S402, a transaction whose execution result is to update the information stored on a storage address can be selected from each transaction as the first type of transaction, and the transactions other than the first type of transaction can be selected from each transaction. The transaction is regarded as the second type of transaction; among the first types of transactions, the first type of transactions with the same storage address are organized into a transaction sub-queue; each transaction sub-queue is regarded as a processing unit, and each transaction The second type of transaction is regarded as a processing unit; each processing unit is organized into N transaction queues. In this way, in the block to be written, all the first-type transactions corresponding to any storage address will be integrated into a transaction sub-queue, and the transaction sub-queue will be put into a transaction queue as a whole . When a node performs transaction execution for the transaction queue, once it accesses the storage address, it will continuously execute all the first type transactions corresponding to the storage address. Further, organize each processing unit into N transaction queues, which can be as follows: According to the transaction quantity corresponding to each processing unit, sort the processing units from largest to smallest; and initialize the transaction number corresponding to each transaction queue to 0; select the first processing unit according to the sorting result; change the current selection The processing unit of is added to the end of the minimum transaction queue, and the transaction quantity corresponding to the minimum transaction queue is updated; the minimum transaction queue is the transaction queue with the smallest transaction quantity currently corresponding; continue to select the next processing unit until All processing units are added to the transaction queue. In this way, the number of transactions corresponding to each transaction queue can be roughly equivalent. In this way, when parallelized transaction execution is performed based on each transaction queue, the workload on each execution process is also roughly the same, and there will be no idle execution process, so that the most transactions can be executed per unit time. Significantly improve the transaction execution efficiency of the node. Based on the method shown in FIG. 1, the embodiment of this specification also provides a block chain-based programming topic publishing device. As shown in FIG. 7, the device is any node in the block chain network, so The device includes: Create module 701 to create programming topics to be released; Construct a broadcasting module 702, construct a topic release transaction based on topic related data, and broadcast the topic release transaction to the blockchain network; the topic related data includes the programming topic, so that the topic can be obtained Each node that issues a transaction writes the topic issue transaction into the blockchain based on the consensus mechanism between the nodes. Based on the method shown in FIG. 2, the embodiment of this specification also correspondingly provides a blockchain-based answer code issuing device. As shown in FIG. 8, the device is any node in the blockchain network. The device includes: The obtaining module 801 obtains the programming topic; the programming topic is issued by the method described in any one of the first to fourth patent applications; The answering module 802 provides the programming question to the tested user for answering, and receives the answer code uploaded by the tested user; Construct a broadcasting module 803, construct an answer release transaction based on answer related data, and broadcast the answer release transaction to the blockchain network, so that each node that obtains the answer release transaction is based on the relationship between each node Consensus mechanism to write the answer release transaction into the blockchain; Wherein, the answer-related data includes the question mark of the programming question, the answer code and the user mark of the tested user. Based on the method shown in Figure 2, the embodiment of this specification also correspondingly provides a blockchain-based answer code verification device. As shown in Figure 9, the device is in a blockchain network and stores corresponding programming questions. The node of the solution test data, the device includes: The obtaining module 901 obtains the answer code corresponding to the programming question and the user identification of the tested user who uploaded the answer code; the programming question is issued through the method shown in FIG. 1, and the answer code is Released through the method shown in Figure 2; The inspection module 902 uses the stored answer inspection data corresponding to the programming question to inspect the answer code; Construct the broadcast module 903. If the verification is passed, construct a result publication transaction based on the result related data, and broadcast the result publication transaction to the blockchain network so that each node that obtains the result publication transaction is based on The consensus mechanism between each node writes the result release transaction into the blockchain; Wherein, the result-related data includes the title identification of the programming topic and the user identification. Based on the method shown in FIG. 1, the embodiment of this specification also correspondingly provides a blockchain-based programming topic publishing system, including a blockchain network composed of multiple nodes; Any node creates a programming topic to be released; constructs a topic publishing transaction based on topic-related data, and broadcasts the topic publishing transaction to the blockchain network, and the topic-related data includes the programming topic; Each node that obtains the topic publishing transaction writes the topic publishing transaction into the blockchain based on the consensus mechanism between the nodes. Based on the method shown in FIG. 2, the embodiment of this specification also correspondingly provides a blockchain-based answer code publishing system, including a blockchain network composed of multiple nodes; Any node obtains a programming topic; the target node is any node in the blockchain network, and the programming topic is issued according to the method shown in Figure 1; the programming topic is provided to the target The test user answers and receives the answer code uploaded by the tested user; builds an answer release transaction based on the answer related information, and broadcasts the answer release transaction to the blockchain network; wherein, the answer related information Including the title identification of the programming question, the answer code and the user identification of the tested user; Each node that obtains the answer release transaction writes the answer release transaction into the blockchain based on the consensus mechanism between the nodes.

Based on the method shown in Figure 3, the embodiment of this specification also correspondingly provides a blockchain-based answer code verification system, including a blockchain network composed of multiple nodes; the nodes are verified to obtain the corresponding answers to the programming questions The code and the user ID of the tested user who uploaded the answer code, the programming question is issued according to the method shown in FIG. 1, the answer code is issued according to the method shown in FIG. 2, the verification node It is a node in the blockchain network that stores the answer test data corresponding to the programming question; uses the stored answer test data corresponding to the programming question to verify the answer code; if the test passes, it is based on Result-related data, construct a result issuance transaction, and broadcast the result issuance transaction to the blockchain network; wherein, the result-related data includes the title identification of the programming topic and the user identification; obtain the Each node of the result publishing transaction writes the result publishing transaction into the blockchain based on the consensus mechanism between the nodes.

FIG. 10 is a schematic structural diagram of a programming degree testing system based on blockchain provided by an embodiment of this specification. The system shown in Figure 10 can be specifically used to implement a blockchain-based programming question issuing system, an answering code issuing system, and an answering code verification system.

The embodiment of the specification also provides a computer device, which at least includes a memory, a processor, and a computer program stored on the memory and running on the processor, wherein the processor executes the program to implement FIG. 1 or FIG. 2 Or the function of the method shown in Figure 3.

FIG. 11 shows a more specific hardware structure diagram of a computing device provided by an embodiment of this specification. The device may include a processor 1110, a memory 1120, an input/output interface 1130, a communication interface 1140, and a bus 1150. The processor 1110, the memory 1120, the input/output interface 1130 and the communication interface 1140 realize the communication connection between each other in the device through the bus 1150.

The processor 1110 may be implemented by a general CPU (Central Processing Unit, central processing unit), a microprocessor, a special application integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, etc., for Execute related programs to realize the technical solutions provided in the embodiments of this specification.

The memory 1120 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1120 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the related program codes are stored in the memory 1120 and are called and executed by the processor 1110. .

The input/output interface 1130 is used to connect input/output modules to realize information input and output. The input/output/module can be configured in the device as a component (not shown in the figure), or can be connected to the device to provide corresponding functions. The input devices may include keyboards, mice, touch screens, microphones, various sensors, etc., and output devices may include displays, speakers, vibrators, indicator lights, and so on.

The communication interface 1140 is used to connect a communication module (not shown in the figure) to realize the communication interaction between the device and other devices. The communication module can realize communication through wired means (such as USB, network cable, etc.), or through wireless means (such as mobile network, WIFI, Bluetooth, etc.).

The bus 1150 includes a path for transmitting information between various components of the device (such as the processor 1110, the memory 1120, the input/output interface 1130, and the communication interface 1140).

It should be noted that although the above device only shows the processor 1110, the memory 1120, the input/output interface 1130, the communication interface 1140, and the bus 1150, in the specific implementation process, the device may also include those necessary for normal operation. Other components. In addition, those skilled in the art can understand that the above-mentioned device may also include only the components necessary to implement the solutions of the embodiments of the present specification, rather than all the components shown in the figures.

The embodiment of the present specification also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the function of the method shown in FIG. 1 and/or FIG. 4 is realized.

Computer-readable media includes permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), and other types of random access memory (RAM) , Read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, magnetic tape, magnetic tape, magnetic disk storage or Other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.

From the description of the above embodiments, those skilled in the art can clearly understand that the embodiments of this specification can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solutions of the embodiments of this specification can be embodied in the form of software products, which can be stored in storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., include a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in the various embodiments or some parts of the embodiments of this specification.

The systems, methods, modules, or units explained in the above embodiments may be implemented by computer chips or entities, or implemented by products with certain functions. A typical implementation device is a computer. The specific form of the computer can be a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email receiving and sending device, and a game control A console, a tablet, a wearable device, or a combination of any of these devices.

Each embodiment in this specification is described in a progressive manner, each The same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and equipment embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiments. The method embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separated. When implementing the solutions of the embodiments of this specification, the functions of the modules can be Implemented in the same one or more software and/or hardware. It is also possible to select some or all of the modules according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement it without making progressive work.

The above are only specific implementations of the embodiments of this specification. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the embodiments of this specification, several improvements and modifications can be made. These Improvements and modifications should also be regarded as the protection scope of the embodiments of this specification.

S100-S106: steps

S200-S208: steps

S300-S308: steps

S400-S406: steps

701: Create Module

702: Build a broadcast module

801: Get Module

802: Answer Module

803: Build Broadcast Module

901: Get Module

902: Inspection Module

903: Build a broadcast module

1110: processor

1120: memory

1130: input/output interface

1140: communication interface

1150: bus

In order to more clearly describe the technical solutions in the embodiments of this specification or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are merely present For some of the embodiments described in the embodiments of the specification, for those of ordinary skill in the art, other drawings may be obtained from these drawings. FIG. 1 is a schematic flowchart of a method for publishing programming questions based on blockchain provided by an embodiment of this specification; FIG. 2 is a schematic flowchart of a method for issuing answer codes based on a blockchain provided by an embodiment of this specification; FIG. 3 is a schematic flowchart of a method for verifying answer codes based on blockchain according to an embodiment of this specification; FIG. 4 is a schematic flow diagram of a method for parallel execution of blockchain transactions provided by an embodiment of this specification; FIG. 5 is a schematic diagram of a serialized transaction execution method in the prior art; FIG. 6 is a schematic diagram of a parallelized transaction execution method provided by an embodiment of this specification; Fig. 7 The embodiment of this specification also correspondingly provides a structural schematic diagram of a programming topic publishing device based on blockchain; Figure 8 The embodiment of this specification also correspondingly provides a structural schematic diagram of a solution code issuing device based on blockchain; Fig. 9 The embodiment of this specification also correspondingly provides a structural schematic diagram of a solution code checking device based on blockchain; FIG. 10 is a schematic flow chart of a programming degree testing system based on blockchain provided by an embodiment of this specification; Fig. 11 is a schematic structural diagram of a computer device for configuring the method of the embodiment of this specification.

Claims (24)

A method for publishing answer codes based on a blockchain, which is based on a programming topic publishing method. The programming topic publishing method includes: a first target node creates a programming topic to be published; the first target node is a blockchain Any node in the network; the first target node constructs a topic publishing transaction based on topic-related data, and broadcasts the topic publishing transaction to the blockchain network; the topic-related data includes the programming Question; for each node that obtains the question issue transaction, the node writes the question issue transaction into the blockchain based on the consensus mechanism between the nodes; the answer code issuing method includes: a second target node Obtain a programming problem; the second target node is any node in the blockchain network; the second target node provides the programming problem to the tested user for answering, and receives the tested user Uploaded answer code; the second target node constructs an answer publishing transaction based on answer related data, and broadcasts the answer publishing transaction to the blockchain network; the answer related data includes the question of the programming question Identification, the answer code and the user identification of the tested user; for each node that obtains the answer release transaction, the node writes the answer release transaction into the block based on the consensus mechanism between the nodes chain. As for the method described in item 1 of the scope of patent application, the subject-related data also includes the node identifier of the first target node. For example, in the method described in item 1 of the scope of the patent application, the programming topic publishing method further includes: for each node that obtains the topic publishing transaction, the node creates a topic storage address and stores the topic related data Enter the storage address of the title. For example, the method described in item 3 of the scope of patent application, storing the topic-related data in the topic storage address, specifically includes: storing the topic smart contract encapsulating the topic-related data in the topic storage address . As in the method described in item 1 of the scope of the patent application, the second target node acquiring the programming topic specifically includes: the second target node reading the programming topic from any topic publishing transaction in the blockchain. For the method described in item 5 of the scope of patent application, if the second target node reads the programming topic from any topic publishing transaction in the blockchain, the topic of the programming topic is identified as the topic Publish the transaction hash of the transaction; if the second target node obtains program settings from any topic storage address If the problem is calculated, the problem of the programming problem is identified as the storage address. For example, in the method described in item 1 of the scope of patent application, the method for issuing the answer code further includes: for each node that obtains the answer issuing transaction, the node creates an answer storage address, and stores the answer related information in The answer storage address. Such as the method described in item 7 of the scope of patent application, storing the answer-related data in the answer storage address, specifically including: storing the answer smart contract encapsulating the answer-related data in the answer storage address . A blockchain-based solution code verification method, including: a verification node obtains a solution code corresponding to a programming problem and a user identification of a tested user, the tested user is the user who uploads the solution code; the programming problem The answer code is issued by the method described in any one of items 1 to 8 in the scope of the patent application, and the test node is a blockchain network that stores the answer test data corresponding to the programming question The node; the verification node uses the stored answer verification data corresponding to the programming question to verify the answer code; if the verification passes, the verification node constructs a result release transaction based on the result-related data, and sends it to the The results of the blockchain network broadcast Transaction; the result-related data includes the title identification of the programming topic and the user identification; for each node that obtains the result of the transaction, the node publishes the result based on the consensus mechanism between the nodes The transaction is written to the blockchain. For example, in the method described in item 9 of the scope of patent application, the inspection node obtains the answer code corresponding to the programming question and the user identification of the tested user, which specifically includes: the inspection node determines the corresponding answer inspection data according to any stored answer inspection data The question mark of; query the answer release transaction containing the question mark from the blockchain, and read the answer code and user ID from the answer release transaction; or query the answer storage address where the question mark is stored , And obtain the answer code and user ID from the answer storage address. For the method described in item 9 of the scope of the patent application, the result-related data also includes the result of the inspection passed or the result of the inspection failed. For example, the method described in item 9 of the scope of patent application, the method further includes: for each node that obtains the result publishing transaction, the node creates a result storage address, and stores the result-related information in the result Storage address. For example, the method described in item 12 of the scope of patent application, storing the result-related data in the result storage address, specifically includes: storing the result smart contract encapsulating the result-related data in the result storage address . For example, the method described in item 12 of the scope of patent application, the method further includes: for each node that obtains the result publication transaction, if the node obtains other result publication transactions associated with the result publication transaction, it is based on The consensus mechanism between the nodes writes the other result release transactions into the blockchain; the other result release transactions are constructed based on the user ID and other topic IDs; and the node releases the transaction according to the other results , Save the other question mark into the result storage address. For example, in the method described in item 9 of the scope of patent application, the number of inspection nodes is greater than 1; the inspection node obtains the answer code corresponding to the programming question and the user ID of the tested user, specifically including: for each inspection node, the inspection node obtains The answer code corresponding to the programming question and the user identification of the tested user who uploaded the answer code; the verification node uses the stored answer inspection data corresponding to the programming question to verify the answer code, which specifically includes: For each verification node, the verification node uses the stored answer verification data corresponding to the programming question to verify the answer code; if the verification passes, the verification node constructs a result release transaction based on the result-related data, and Broadcasting the result issuance transaction to the blockchain network specifically includes: for each check node, if the check node passes the check of the answer code, construct a result issuance transaction based on the result related data, and send it to the The blockchain network broadcasts the result release transaction. For example, the method described in item 15 of the scope of patent application, for each node that obtains the result release transaction, the node writes the result release transaction into the blockchain based on the consensus mechanism between the nodes, which specifically includes: When the node determines that the number of result publication transactions obtained is a specified number, based on the consensus mechanism between the nodes, any result publication transaction obtained is written into the blockchain; wherein the specified number is not greater than the verification node’s Quantity. For the method described in item 9 of the scope of patent application, the verification node is a node in the blockchain network that creates the programming topic. A method for publishing answer codes based on blockchain, including: a second target node obtains programming questions; the second target node is any node in a blockchain network; the second target node transfers the program Design questions to be tested The user answers and receives the answer code uploaded by the tested user; the second target node constructs an answer issuance transaction based on the answer-related information, and broadcasts the answer issuance transaction to the blockchain network so that Each node that obtains the answer issuance transaction writes the answer issuance transaction into the blockchain based on the consensus mechanism between the nodes; wherein, the answer-related data includes the question identification of the programming question, the The answer code and the user ID of the tested user; the programming problem is issued by the following method: the first target node creates the programming problem to be released, and the first target node is in the blockchain network Any node; based on topic-related data, construct a topic publishing transaction, and broadcast the topic publishing transaction to the blockchain network, and the topic-related data includes the programming topic to obtain the topic publishing transaction Based on the consensus mechanism between the nodes, each node writes the topic release transaction into the blockchain. A blockchain-based solution code verification method, including: a verification node obtains a solution code corresponding to a programming problem and a user identification of a tested user, the tested user is the user who uploads the solution code; the programming problem The answer code is issued by the method described in any one of items 1 to 8 in the scope of the patent application, and the test node is a blockchain network that stores the answer test data corresponding to the programming question The node; the verification node uses the stored corresponding to the programming problem Answer the inspection data and verify the answer code; if the inspection passes, the inspection node constructs a result release transaction based on the result-related data, and broadcasts the result release transaction to the blockchain network so that the Each node of the result issuance transaction writes the result issuance transaction into the blockchain based on the consensus mechanism between the nodes; wherein the result-related data includes the title identification of the programming topic and the user identification. A block chain-based solution code issuing device, the device is any node in the block chain network, the device includes: an acquisition module to obtain programming questions; an answer module to transfer the programming questions Provide answers to the tested users, and receive the answer codes uploaded by the tested users; construct a broadcasting module, construct answer release transactions based on answer related data, and broadcast the answer release transactions to the blockchain network , So that each node that obtains the answer issuance transaction writes the answer issuance transaction into the blockchain based on the consensus mechanism between the nodes; wherein, the answer-related data includes the question mark of the programming question , The answer code and the user identification of the tested user; the programming question is issued by the following method: the first target node creates a programming question to be released, and the first target node is a blockchain network Any node in the road; construct a topic release transaction based on topic related data, and broadcast the topic release transaction to the blockchain network, the topic related information includes The topic is programmed so that each node that obtains the topic release transaction writes the topic release transaction into the blockchain based on the consensus mechanism between the nodes. A blockchain-based answer code verification device, the device is a node in a blockchain network that stores answer verification data corresponding to a programming problem, the device includes: an acquisition module to acquire the programming problem The corresponding answer code and the user ID of the tested user, the tested user is the user who uploaded the answer code; the programming question and the answer code are through any one of items 1 to 8 in the scope of patent application The method is issued; the inspection module uses the stored answer inspection data corresponding to the programming question to verify the answer code; builds the broadcast module, and if the inspection passes, builds the result release based on the result related data Transaction, and broadcast the result publication transaction to the blockchain network, so that each node that obtains the result publication transaction writes the result publication transaction into the blockchain based on the consensus mechanism between the nodes Wherein, the result-related data includes the title identification of the programming topic and the user identification. A blockchain-based solution code publishing system, including a blockchain network composed of multiple nodes; the first target node creates a programming problem to be published, and the first target node is in the blockchain network Any node; based on topic-related information Data, construct a topic release transaction, and broadcast the topic release transaction to the blockchain network, the topic-related data includes the programming topic; a second target node to obtain the programming topic; the second target The node is any node in the blockchain network; the programming question is provided to the tested user for answering, and the answer code uploaded by the tested user is received; based on the answer related data, the answer issuance transaction is constructed, and Broadcast the answer issuance transaction to the blockchain network; wherein, the answer-related data includes the question identification of the programming question, the answer code and the user identification of the tested user; obtain the question Each node that issues a transaction writes the topic issue transaction into the blockchain based on the consensus mechanism between the nodes; each node that obtains the answer issue transaction, based on the consensus mechanism between the nodes, will The answer is to write the transaction to the blockchain. A blockchain-based answer code verification system, including a blockchain network composed of multiple nodes; the verification node obtains the answer code corresponding to the programming question and the user ID of the tested user, and the tested user uploads The user of the answer code, the programming question and the answer code are issued by the method described in any one of the 1 to 8 patents, and the verification node is in the blockchain network, A node that stores the answer test data corresponding to the programming question; uses the stored answer test data corresponding to the programming question to verify the answer code; if the test passes, build a result release transaction based on the result related data , And to the blockchain network Broadcast the result release transaction; wherein, the result-related data includes the title identification of the programming topic and the user identification; each node that obtains the result release transaction, based on the consensus mechanism between the nodes, will The result release transaction is written into the blockchain. A computer device includes a memory, a processor, and a computer program stored on the memory and running on the processor, wherein the processor executes the computer program as described in item 18 or 19 of the scope of patent application. The method described.

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