CN110533429A - Transaction endorsement method, apparatus and block chain network in block chain - Google Patents

Abstract

The present invention provides a transaction endorsement method and device in the block chain, and a block chain network, wherein the method is applied to the endorsement node in the block chain, and the method includes: receiving a transaction proposal from the client; simulating the execution area The smart contract on the block chain is used to review the content to be uploaded in the transaction proposal and obtain the review result; the endorsement result is generated according to the review result, and the endorsement result is returned to the client. The present invention audits the content to be uploaded through the smart contract on the endorsement node of the blockchain, and is not under the full control of any individual or organization. Therefore, the audit process is open and transparent, and the audit results are avoided from being interfered by subjective factors, thereby improving blockchain security. Fairness and rationality of on-chain content review.

Description

Transaction endorsement method, device and blockchain network in blockchain

technical field

The present invention relates to the technical field of block chains, in particular to a transaction endorsement method and device in block chains and a block chain network.

Background technique

Due to the decentralized and non-tamperable nature of the blockchain, once illegal content is uploaded to the chain, it will cause irreparable losses to society and related individuals. Therefore, it is necessary to review the content uploaded to the blockchain. In the related technologies, most of them pass through the algorithm audit customized by the enterprise or manual audit. The audit results are greatly disturbed by subjective factors and lack fairness and rationality.

Contents of the invention

The purpose of the present invention is to provide a transaction endorsement method, device and blockchain network in the blockchain, so as to improve the fairness and rationality of content auditing on the blockchain.

In the first aspect, the embodiment of the present invention provides a transaction endorsement method in the blockchain, the method is applied to the endorsement node in the blockchain, and the method includes: receiving a transaction proposal from the client; wherein, in the transaction proposal Including the content to be uploaded; simulate the execution of the smart contract on the blockchain to review the content to be uploaded and obtain the review result; generate an endorsement result based on the review result, and return the endorsement result to the client.

In a preferred embodiment of the present invention, the above-mentioned steps of simulating and executing the smart contract on the block chain to review the content to be uploaded include: calling the preset content review algorithm through the smart contract on the block chain; wherein , the content review algorithm runs on the endorsement node; through the content review algorithm, it is judged whether the content to be uploaded contains the preset sensitive words; if the content to be uploaded does not contain sensitive words, it is determined that the review result is legal; The chain content contains sensitive words, and the audit result is determined to be illegal.

In a preferred embodiment of the present invention, the above-mentioned step of judging whether the content to be uploaded contains preset sensitive words includes: matching the content to be uploaded with the sensitive vocabulary corresponding to the content review algorithm to obtain the matching result; Among them, the sensitive lexicon and the hash value of the sensitive lexicon are stored on the blockchain; if the matching result is a match failure, it is determined that the content to be uploaded does not contain sensitive words; if the matching result is a successful match, it is determined that the content to be uploaded The chain content contains sensitive words.

In a preferred embodiment of the present invention, the above-mentioned step of determining that the audit result is legal includes: if the content to be uploaded does not contain sensitive words, call a third-party service through a preset network interface to review the content to be uploaded; if The third-party service has passed the audit, and the audit result is determined to be legal.

In a preferred embodiment of the present invention, the step of generating the endorsement result according to the audit result includes: signing the audit result to obtain the signed audit result; determining the signed audit result as the endorsement result.

In the second aspect, the embodiment of the present invention provides a transaction endorsement method in the blockchain. The method is applied to the client in the blockchain. The method includes: if the content to be uploaded is received, according to the content to be uploaded Generate a transaction proposal; where the transaction proposal includes the content to be uploaded to the chain; send the transaction proposal to the endorsement node included in the endorsement policy to simulate the execution of the smart contract on the blockchain through the endorsement node to review the content to be uploaded to the chain , get the audit result; generate the endorsement result according to the audit result.

In a preferred embodiment of the present invention, after the above step of sending the transaction proposal to the endorsement node included in the endorsement policy, the method further includes: receiving the endorsement result returned by the endorsement node; judging whether the endorsement result conforms to the transaction proposal corresponding Endorsement policy; if it matches, send the endorsement result and transaction proposal to the consensus node on the blockchain, so that the content to be uploaded can be processed on the chain through the consensus node.

In a preferred embodiment of the present invention, the above-mentioned endorsement policy includes multiple endorsement nodes; the above-mentioned step of judging whether the endorsement result returned by the endorsement node conforms to the endorsement policy corresponding to the transaction proposal includes: determining the multiple endorsement nodes included in the endorsement policy The number of endorsements of the endorsement results returned by the node; when the number of endorsement nodes is greater than the preset threshold, it is judged whether the endorsement results returned by each endorsement node are endorsement passes; if the endorsement results returned by multiple endorsement nodes are all endorsement passes, Make sure that the endorsement result returned by the endorsement node complies with the endorsement policy corresponding to the transaction proposal.

In a third aspect, an embodiment of the present invention provides a transaction endorsement device in a blockchain, the device is set at an endorsement node in the blockchain, and the device includes: a proposal receiving module, configured to receive a transaction proposal from a client; Among them, the transaction proposal includes the content to be uploaded to the chain; the audit module is used to simulate the execution of the smart contract on the blockchain to review the content to be uploaded to the chain and obtain the audit results; the result return module is used to generate endorsement results based on the audit results , and return the endorsement result to the client.

In the fourth aspect, the embodiment of the present invention provides a transaction endorsement device in the blockchain, the device is set on the client side in the blockchain, and the device includes: a proposal generation module, used to , generate a transaction proposal according to the content to be uploaded; wherein, the transaction proposal includes the content to be uploaded to the chain; the proposal sending module is used to send the transaction proposal to the endorsement node included in the endorsement policy, so as to simulate the implementation of the blockchain through the endorsement node Smart contracts on the chain to review the content to be uploaded and get the review results; generate endorsement results based on the review results.

In the fifth aspect, the embodiment of the present invention provides a blockchain network, the blockchain network includes a client and an endorsement node; the client is used to send a transaction proposal to the endorsement node; wherein, the transaction proposal includes Chain content; the above-mentioned endorsement nodes are used to simulate the execution of smart contracts on the blockchain to review the received content to be uploaded to the chain, and obtain the review results; and generate endorsement results based on the review results, and return the endorsement results to the client.

In a preferred embodiment of the present invention, the above-mentioned endorsement node is also used to: call the preset content audit algorithm through the smart contract on the block chain; wherein, the content audit algorithm runs on the endorsement node; through the content audit algorithm , to determine whether the content to be uploaded contains the preset sensitive words; if the content to be uploaded does not contain sensitive words, determine that the audit result is legal; if the content to be uploaded contains sensitive words, determine that the audit result is illegal.

In a preferred embodiment of the present invention, the above-mentioned endorsement node is also used to: sign the audit result to obtain the signed audit result; determine the signed audit result as the endorsement result.

In a preferred embodiment of the present invention, the blockchain network further includes: a consensus node; the above-mentioned client is also used to receive the endorsement result returned by the endorsement node; judge whether the endorsement result conforms to the endorsement policy corresponding to the transaction proposal; , send the endorsement result and transaction proposal to the consensus node, and the consensus node is used to process the content to be uploaded on the chain.

In a preferred embodiment of the present invention, the above-mentioned block chain network also includes a submission node; the consensus node is also used to: receive the endorsement result and transaction proposal from the client, and process the transactions to be uploaded in the transaction proposal according to the preset consensus algorithm The content is sorted, and for the sorted content to be uploaded, a block is generated according to the preset block strategy, and the block is sent to the submission node; the submission node is used to: proofread the content to be uploaded in the block After passing the inspection, the content to be uploaded will be uploaded to the chain.

In a sixth aspect, an embodiment of the present invention provides a server, including a processor and a memory, the memory stores machine-executable instructions that can be executed by the processor, and the processor executes the machine-executable instructions to implement the server described in the first aspect. The transaction endorsement method in the blockchain.

In a seventh aspect, an embodiment of the present invention provides a user terminal, including a processor and a memory, where the memory stores machine-executable instructions that can be executed by the processor, and the processor executes the machine-executable instructions to implement the second aspect. The transaction endorsement method in the blockchain described above.

In an eighth aspect, an embodiment of the present invention provides a machine-readable storage medium, the machine-readable storage medium stores machine-executable instructions, and when the machine-executable instructions are called and executed by a processor, the machine-executable instructions Prompt the processor to implement the transaction endorsement method in the blockchain described above.

Embodiments of the present invention bring the following beneficial effects:

The present invention provides a transaction endorsement method, device, blockchain network, server, and user terminal in a blockchain, wherein the method is applied to an endorsement node in a blockchain, and the method first receives a transaction proposal from a client ; Then simulate the execution of the smart contract on the blockchain to review the content to be uploaded in the transaction proposal; finally generate an endorsement result based on the review result, and return the endorsement result to the client. The present invention audits the content to be uploaded through the smart contract on the endorsement node of the blockchain, and is not under the full control of any individual or organization. Therefore, the audit process is open and transparent, and the audit results are avoided from being interfered by subjective factors, thereby improving blockchain security. Fairness and rationality of on-chain content review.

Other features and advantages of the present invention will be set forth in the following description, or some of the features and advantages can be inferred or unambiguously determined from the description, or can be known by implementing the above-mentioned techniques of the present invention.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred implementation modes are specifically cited below, together with the accompanying drawings, to be described in detail as follows.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a block chain network provided by an embodiment of the present invention;

FIG. 2 is a flowchart of a transaction endorsement method in a blockchain provided by an embodiment of the present invention;

Fig. 3 is a flow chart of another transaction endorsement method in blockchain provided by an embodiment of the present invention;

Fig. 4 is the flowchart of state transition in the DFA algorithm provided by the embodiment of the present invention;

Fig. 5 is the sensitive word data structure construction diagram that the embodiment of the present invention provides;

Fig. 6 is a flow chart of another transaction endorsement method in a blockchain provided by an embodiment of the present invention;

FIG. 7 is a flow chart of another transaction endorsement method in a blockchain provided by an embodiment of the present invention;

Fig. 8 is a flow chart of another transaction endorsement method in blockchain provided by an embodiment of the present invention;

FIG. 9 is a flow chart of uploading content to be uploaded according to an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of a transaction endorsement device in a blockchain provided by an embodiment of the present invention;

Fig. 11 is a schematic structural diagram of another transaction endorsement device in a blockchain provided by an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a blockchain network provided by an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a server or user terminal provided by an embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Due to its characteristics of decentralization, non-tampering, and auditability, blockchain technology is widely used in digital certificate storage, supply chain finance, medical privacy information protection, electronic bills, trusted sharing of resources, and other fields. Blockchain technology can help all parties involved in the blockchain to quickly establish a set of trust mechanisms, thus greatly promoting the development of the digital financial field, and the operation mechanism of blockchain technology is more efficient, and more and more corporate organizations Both individual and individual users tend to store digital resources in the blockchain, as shown in Figure 1, which is a schematic diagram of a blockchain network.

The blockchain network in Figure 1 includes clients, endorsement nodes, consensus nodes and submission nodes. Usually, the user sends a transaction proposal to the endorsement node through the client. After the endorsement node receives the transaction proposal, it verifies the user's identity and the legality of the transaction, and returns the verification result to the client; the client verifies the verification result, and sends the transaction proposal The content to be uploaded in the chain is packaged, and the packaged data is sent to the consensus node; after the consensus node sorts the packaged data, the sorted data is generated according to the block strategy to generate a new block, and the block is sent to To the submitting node, the submitting node verifies the transactions in the block, and after the verification is completed, the data is uploaded to the chain.

With the rapid development of the Internet, more and more Internet companies have launched content-providing services, so a large amount of data is generated every day, and the data usually increases exponentially. Some illegal content or malicious rumors are published on the Internet. Due to the decentralized and non-tamperable characteristics of the blockchain, unless the blockchain network on all nodes on the entire network is stopped or more than 51% of the nodes in the entire network are combined to modify the chain Otherwise, illegal content or malicious rumor content cannot be deleted. Therefore, once illegal content is uploaded to the chain, it will cause irreparable losses to the society and related individuals.

Based on this, some companies will review the content on the chain. The review standards and sensitive content library are formulated by the company and are not completely publicly visible. The review behavior is also completely dominated by the company. For the benefit of individuals or businesses, the unauthorized cancellation or blocking of uploaded content by content providers happens from time to time, so this content review method lacks fairness and rationality.

On the basis of the above problems, the embodiment of the present invention provides a transaction endorsement method, device, blockchain network, server and user terminal in the blockchain; this technology can be applied to the scene of data uploading in the blockchain technology , especially in the scenario of reviewing the content of the data to be uploaded in the blockchain.

In order to facilitate the understanding of this embodiment, a transaction endorsement method in a block chain disclosed in the embodiment of the present invention is firstly introduced in detail. This method is applied to an endorsement node in a block chain, as shown in FIG. 2 , the method Including the following steps:

Step S202, receiving a transaction proposal from the client; wherein, the transaction proposal includes content to be uploaded.

The client may be an application program installed on the user's mobile terminal (such as a mobile phone, a tablet computer, etc.) or a computer, or may be an SDK (Software Development Kit, software development kit) on the computer. The above-mentioned content to be uploaded is usually the text, picture or video that the user wants to upload. In addition to the content to be uploaded, the above-mentioned transaction proposals usually include user identity information, transaction information, etc.

Step S204, simulating the execution of the smart contract on the blockchain to review the content to be uploaded and obtain the review result.

The above-mentioned smart contract is usually a computer protocol that disseminates, verifies or executes contracts in an informatized manner. The smart contract is usually a chain code written on the blockchain. The chain code can encode transaction assets, and transaction instructions can be Modify transaction assets. When instantiating, the smart contract needs to specify an endorsement policy. The endorsement policy usually needs to specify the endorsement node to endorse the transaction. It can also be understood that the endorsement node can verify or declare whether the transaction is legal.

In the specific implementation, through the client's SDK to interact with the blockchain network, the smart contract on the blockchain (also called chain code) can be invoked, and some nodes of the auditing party are selected as endorsement nodes according to the verification requirements. Accordingly, a corresponding endorsement policy can be generated, and the endorsement policy usually includes one or more endorsement nodes. For example, the chaincode of the endorsement policy can be written as: peer chaincode instantiate-C<channelid>-nSensitive-Chaincode-P"AND('Org1.peer','Org2.peer','Org3.peer')"; the endorsement In the policy, only when the three endorsement nodes of Org1.peer, Org3.peer and Org3.peer all endorse, the endorsement process is truly completed.

After the client sends the transaction proposal, each endorsement node in the endorsement policy can receive the transaction proposal, and then each endorsement node verifies whether the user identity information in the transaction proposal meets the preset requirements, and if it meets the requirements, it will simulate execution (After simulating the execution of the smart contract, the content to be uploaded to the chain usually does not record the audit results in the blockchain) smart contract, which can conduct content audit on the content to be uploaded to the chain in the transaction proposal, so as to obtain the legality of the content to be uploaded to the chain. or illegal audit results. Among them, the content review is usually to review whether the content to be uploaded is illegal content or malicious rumor content.

In step S206, an endorsement result is generated according to the above review result, and the endorsement result is returned to the client.

The endorsement node generates an endorsement result corresponding to the legitimacy of the audit result of the content to be uploaded. When the audit result of the content to be uploaded is legal, the endorsement result of the corresponding endorsement node is endorsement pass; when the audit result of the content to be uploaded is illegal, the endorsement result of the corresponding endorsement node is endorsement failed. The endorsement node returns the endorsement result to the client. If all the endorsement nodes in the endorsement policy have endorsed, the client will send the content to be uploaded to the consensus node; the consensus node will sort the content to be uploaded to the chain, and then generate according to the block generation strategy Create a new block and send the block to the submitting node; the submitting node verifies the content to be uploaded in the block, and performs operations on the chain after the verification is completed. If one or more endorsements of all the endorsement nodes in the endorsement policy fail, the content to be uploaded will fail to be uploaded.

The invention provides a transaction endorsement method in the block chain, the method is applied to the endorsement node in the block chain, the method first receives the transaction proposal from the client; then simulates the execution of the smart contract on the block chain to review The content to be uploaded in the transaction proposal; finally, the endorsement result is generated according to the review result, and the endorsement result is returned to the client. The present invention audits the content to be uploaded through the smart contract on the endorsement node of the blockchain, and is not under the full control of any individual or organization. Therefore, the audit process is open and transparent, and the audit results are avoided from being interfered by subjective factors, thereby improving blockchain security. Fairness and rationality of on-chain content review.

The embodiment of the present invention also provides another transaction endorsement method in the block chain, which is implemented on the basis of the method described in the above-mentioned embodiment; Concrete process; As shown in Figure 3, this method comprises the steps:

Step S302, receiving a transaction proposal from the client; wherein, the transaction proposal includes content to be uploaded.

Step S304, call the preset content review algorithm through the smart contract on the blockchain; wherein, the content review algorithm runs on the endorsement node.

The aforementioned preset content review algorithm is usually a sensitive word filtering algorithm, and the sensitive word filtering algorithm may use a DFA (Deterministic Finite Automaton, deterministic finite automaton) algorithm. The characteristics of the DFA algorithm are: there is a finite state set and some edges leading from one state to another state, each edge is marked with a symbol, one of the states is the initial state, and some states are the final state, which can also be understood In order to obtain the next state next state=event+state through the current state state and the event event, FIG. 4 is a flow chart of state transition in the DFA algorithm.

In Figure 4, S, U, V, and Q all represent states, and a and b represent actions. Usually, it can be determined which action to pass from one state to another according to the events input into the DFA (also can be understood as the content to be uploaded). a state. In sensitive word filtering, it is not events and state transitions, but searching. If there are sensitive words such as "Chinese spy" and "Sino-US trade war", it is first necessary to construct a sensitive word data structure, as shown in Figure 5. It can be seen from Figure 5 that if there are multiple sensitive words with different initial characters, multiple independent keyword trees will be formed. In order to improve query efficiency, all initial letters can be stored in a separate initial set.

When 1577 sensitive words are stored in the local library corresponding to the DFA algorithm, the average time-consuming and accuracy of sensitive word recognition by the DFA algorithm are obtained, as shown in Table 1. It can be seen from Table 1 that the average time consumed by the DFA algorithm for identifying sensitive words is very small, and the accuracy rate is also high.

Table 1

Step S306, review the content to be uploaded through the above-mentioned content review algorithm, and obtain the review result.

The above-mentioned content review algorithm can review whether the content to be uploaded is illegal or maliciously spread rumors. Usually, it can be determined whether the content to be uploaded is legal by reviewing whether the content to be uploaded contains sensitive words, and the audit result can be obtained. Then, through the content review algorithm, the content to be uploaded can be reviewed through the following steps 01-03:

Step 01, determine whether the content to be uploaded contains preset sensitive words; if the content to be uploaded does not contain sensitive words, perform step 02; if the content to be linked contains sensitive words, perform step 03.

The above-mentioned sensitive words are usually related to politics, pornography, and violence. Match the content to be uploaded with the sensitive lexicon corresponding to the content review algorithm to obtain the matching result; among them, the sensitive lexicon and the hash value of the sensitive lexicon are stored on the blockchain; if the matching result is a match failure , confirm that the content to be uploaded does not contain sensitive words; if the matching result is a successful match, confirm that the content to be uploaded contains sensitive words.

The above-mentioned sensitive lexicon is usually a set of related sensitive words established in advance. The sensitive lexicon is encrypted and base64-encoded and then uploaded to the blockchain together with Hash (hash value). Any node in the blockchain alliance who wants to update the sensitive lexicon must obtain the consent of other members of the alliance. The encrypted sensitive lexicon and the corresponding Hash on the blockchain are open and transparent to everyone, so it is difficult for any node to tamper with the sensitive lexicon privately, thereby preventing the phenomenon of tampering with the sensitive lexicon due to personal interests Providers of chain content bring more secure and legal interests.

Step 02, determine that the audit result is legal.

Step 03, determine that the audit result is illegal.

In step S308, an endorsement result is generated according to the above review result, and the endorsement result is returned to the client.

The transaction endorsement method in the above-mentioned blockchain, after receiving the transaction proposal from the client, invokes the preset content review algorithm through the smart contract on the blockchain, and uses the content review algorithm to review the content to be uploaded to the chain to obtain the review result. Finally, an endorsement result is generated based on the above review results, and the endorsement result is returned to the client. This method runs the content review algorithm on the endorsement node to review the content on the chain, which can ensure that each review is reviewed by the endorsement node and is not fully controlled by the content manager. The review process is open, transparent and auditable. The content on the block chain cannot be tampered with, so the content on the chain after the content is automatically reviewed can better meet the current regulatory requirements.

The embodiment of the present invention also provides another transaction endorsement method in the blockchain, which is implemented on the basis of the method described in the above embodiment; the method focuses on describing the specific process of the content review algorithm to determine the legality of the content to be uploaded to the chain, and The specific process of generating the endorsement result according to the audit result; as shown in Figure 6, the method includes the following steps:

Step S602, receiving a transaction proposal from the client; wherein, the transaction proposal includes content to be uploaded.

Step S604, call the preset content review algorithm through the smart contract on the blockchain; wherein, the content review algorithm runs on the endorsement node.

After the endorsement node receives the transaction proposal, it will simulate the execution of the smart contract on the blockchain, and the smart contract will call the content review algorithm (for example, the sensitive word filtering algorithm DFA) for content review to check the transactions to be uploaded on the endorsement node. Whether the content contains sensitive words.

Step S606, judge whether the preset sensitive words are contained in the content to be uploaded through the above-mentioned content review algorithm; if the above-mentioned content to be uploaded does not contain sensitive words, execute step S608; if the above-mentioned content to be uploaded contains sensitive words, execute Step S612.

First of all, it is necessary to perform word segmentation on the content to be uploaded, and compare the obtained word segmentation result with the sensitive words in the sensitive word database. If there is no sensitive word in the word segmentation result, the preliminary review result is no sensitive word. In order to ensure the accuracy of the judgment A second review is required for the content to be uploaded; if there are sensitive words in the word segmentation result, it will be directly judged that the content to be uploaded is illegal, that is, the review result is illegal.

Step S608, call a third-party service to review the content to be uploaded through the preset network interface; execute step S610.

Step S610, if the above-mentioned third-party service audit passes, it is determined that the audit result is legal; and step S614 is executed.

The above-mentioned third-party services are usually audit algorithms preset according to the needs of the auditors. For example, word segmentation, stop words, and meaningless words can be processed on the content to be uploaded, and then the content of the processed content to be uploaded can be extracted. feature (the content feature can include word feature, text style feature and semantic feature corresponding to the content), and then use the classifier to filter the content feature to obtain the filtering result; finally, the confidence degree of the content review is obtained through the filtering result, if the confidence value If it is less than the preset threshold, it is determined that the audit result is legal; if the confidence value is greater than or equal to the preset threshold, it is determined that the audit result is illegal.

Step S612, determine that the audit result is illegal; execute step S614.

Step S614, perform signature processing on the above-mentioned review result, and obtain the signed review result.

The signature is usually signed by a CA (Certificate Authority, electronic certification service agency) certificate to declare or guarantee the correctness of the audit result.

Step S616, determining the signed verification result as the endorsement result, and returning the endorsement result to the client. The endorsement results usually include audit results and CA-signed certificates.

When the client receives the endorsement results of all endorsement nodes, it will verify whether the signature of the endorsement is correct, compare the endorsement results of all endorsement nodes, and check whether the endorsement results of all endorsement nodes have been received.

In the above-mentioned transaction endorsement method in the blockchain, after the endorsement node receives the transaction proposal, it invokes the preset content audit algorithm through the smart contract on the blockchain, and judges whether the content to be uploaded contains the preset content through the content audit algorithm. Sensitive words; if the content to be uploaded does not contain sensitive words, call a third-party service to review the content to be uploaded, and if the review is passed, determine that the audit result is legal; if the content to be uploaded contains sensitive words, determine that the audit result is legal; finally Sign the audit result and get the endorsement result. This method conducts a second review of the content on the chain to ensure the correctness of the review results, and the content review algorithm is completed on the endorsement node. The entire review process is open, transparent, and has certain controllability.

The embodiment of the present invention also provides another transaction endorsement method in the blockchain, which is applied to the client in the blockchain, as shown in Figure 7, the method includes the following steps:

Step S702, if the content to be uploaded is received, a transaction proposal is generated according to the content to be uploaded; wherein, the transaction proposal includes the content to be uploaded.

The above-mentioned content to be uploaded is usually the text, picture or video uploaded by the content provider in the client through the registered account. The above-mentioned transaction proposals not only include the content to be uploaded to the chain, but also usually include user identity information, transaction information, etc.

Step S704, sending the above transaction proposal to the endorsement node included in the endorsement policy, so as to simulate the execution of the smart contract on the blockchain through the endorsement node, to review the content to be uploaded to the chain, and obtain the review result; generate an endorsement result according to the review result.

In the specific implementation, through the client's SDK to interact with the blockchain network, the smart contract on the blockchain can be invoked, and some nodes of the reviewer are selected as endorsement nodes according to the verification requirements, so that corresponding endorsement policies can be generated.

For the transaction endorsement method in the above-mentioned blockchain, if the content to be uploaded is received, a transaction proposal is generated according to the content to be uploaded; then the transaction proposal is sent to the endorsement node included in the endorsement policy to simulate execution by the endorsement node The smart contract on the blockchain is used to review the content to be uploaded to the chain and obtain the review result; the endorsement result is generated according to the review result. This method reviews the content to be uploaded through the smart contract on the blockchain endorsement node, and is not controlled by any individual or organization. Therefore, the review process is open and transparent, avoiding the interference of the review results by subjective factors, thereby improving the blockchain. The fairness and rationality of chain content review.

The embodiment of the present invention also provides another transaction endorsement method in the blockchain, which is implemented on the basis of the method shown in Figure 7 above; this method focuses on describing the specific process of the client processing the endorsement result; as shown in Figure 8 As shown, the method includes the following steps:

Step S802, if the content to be uploaded is received, a transaction proposal is generated according to the content to be uploaded; wherein, the transaction proposal includes the content to be uploaded.

Step S804, send the above transaction proposal to the endorsement node included in the endorsement policy, so as to simulate the execution of the smart contract on the blockchain through the endorsement node, to review the content to be uploaded to the chain, and obtain the review result; generate an endorsement result according to the review result.

Step S806, receiving the endorsement result returned by the endorsement node.

Step S808, judging whether the above endorsement result conforms to the endorsement policy corresponding to the transaction proposal; if so, execute step S810; execute step S812.

When the client receives the endorsement result returned by the endorsement node, it judges whether the endorsement result meets the requirements, so as to determine whether the content to be uploaded meets the requirements of the chain. In specific implementation, if the endorsement policy includes multiple endorsement nodes; the above step S808 can be implemented through the following steps 80-82:

Step 80, determine the number of endorsement nodes of the endorsement results returned by the multiple endorsement nodes included in the endorsement policy.

Step 81, in the case that the number of the above-mentioned endorsement nodes is greater than the preset threshold, it is judged whether the endorsement result returned by each endorsement node is the endorsement passed.

The above-mentioned preset threshold is usually set artificially, which can be the number of all endorsement nodes, or the percentage of all endorsement nodes, for example, 80% or 70%; usually, all endorsement nodes in the endorsement policy return the endorsement The result is the best case scenario.

Step 82, if the endorsement results returned by the above-mentioned endorsement nodes all pass the endorsement, determine that the endorsement results returned by the endorsement nodes comply with the endorsement policy corresponding to the transaction proposal.

For example, the endorsement policy contains 6 endorsement nodes, and the preset threshold is set to 4. When the endorsement results of the 5 endorsement nodes are all passed, it can be determined that the endorsement results returned by the endorsement node conform to the endorsement policy corresponding to the transaction proposal .

Step S810, sending the above-mentioned endorsement result and transaction proposal to the consensus node on the block chain, so that the content to be uploaded to the chain can be processed on the chain through the consensus node. Finish.

When the above endorsement results conform to the endorsement policy, the content to be uploaded will be packaged and the packaged data will be sent to the consensus node. Generate the block corresponding to the sorted content to be uploaded, and then submit the block to the submission node, and the submission node will write the content to be uploaded to the blockchain network.

Step S812, displaying that the content to be uploaded fails to be uploaded.

Only when the endorsement signature is verified correctly, the endorsement results of all endorsement nodes are legal, and the client receives the endorsement results of all endorsement nodes, can it be confirmed that the content to be uploaded to the chain is successfully endorsed. After the endorsement is successful, the client can send the content to be uploaded to the chain to Consensus nodes to complete subsequent operations on the chain.

Figure 9 shows a flow chart of content to be uploaded to the chain; first, the content provider of the content to be uploaded needs to submit identity registration on the blockchain platform, and can join the alliance blockchain after being verified by the reviewer. And get a registered account; Among them, the information provided by the content provider when registering must be true and valid, and an ID card information can only be registered once with a real name. The content provider logs in to the blockchain platform (equivalent to a client) through a registered account and a registered password, and initiates a transaction proposal based on the edited content to be uploaded to the chain. When all the endorsement nodes of the endorsement policy will receive the transaction proposal and verify the certificate and authority of the content provider (equivalent to the above identity information), if the requirements are met, the endorsement node will simulate the execution of the smart contract on the blockchain.

The smart contract will call the sensitive word filtering algorithm on the blockchain to determine whether the content to be uploaded contains sensitive words. If the content to be uploaded does not contain sensitive words, it will call the content audit provided by the third-party service to perform secondary evaluation on the content to be uploaded. review to ensure the accuracy of the review and the performance of the review. If the second review is passed, the judgment result of the legality of the content to be uploaded will be obtained. At this time, the endorsement node will sign the judgment result of the content to be uploaded to the chain, obtain the endorsement result, and finally send the endorsement result to the blockchain of the content provider platform.

After all the endorsement nodes in the endorsement policy have sent the endorsement results, the blockchain platform will judge whether the endorsement results of all the endorsement nodes are legal (equivalent to passing the endorsement), if not, the content to be uploaded to the chain fails; if If they are all legal, the content to be uploaded will be packaged to form a transaction, and the transaction will be signed and sent to the consensus node. The consensus node will sort the content on the chain according to the current consensus algorithm, and generate the sorted transaction according to the block generation strategy. Submit the block corresponding to the content to be uploaded to the Committer node (also referred to as the commit node). The above-mentioned block generation strategy can usually divide blocks according to the type of content to be uploaded or data format.

After the Committer node receives the block, it will verify the transaction proposal submitted by the content provider in the block, that is, call the VSCC (validator system chaincode, verification program system chaincode) related to the transaction as the transaction verification process Part of it is to determine the validity of the transaction, and indicate which transactions are valid and which are invalid in the block, so that the content provider can monitor the invalid transaction and the valid transaction. If the verification fails (that is, the transaction is invalid), the content provider's transaction proposal is invalid. If the verification is successful (that is, the transaction is valid), the block is appended to the alliance blockchain, and the content to be uploaded by the content provider is broadcast to all nodes in the alliance blockchain and written into the alliance blockchain system , and modify the world state.

The chain-up method of the above-mentioned content to be uploaded to the chain can improve the chain-up operation of illegal data and false data, and the audit results of the content audit algorithm are called from the smart contract and stored on the chain after endorsement, and the audit results are provided by Each node decides together, so the review process is transparent, reasonable and traceable, and has good practicability; at the same time, it can filter sensitive words on the content on the chain, reducing unnecessary operations after illegal information enters the chain, and can also meet regulatory needs , and reduce the maintenance cost of the blockchain.

The transaction endorsement method in the above blockchain receives the endorsement result returned by the endorsement node, and judges whether the endorsement result conforms to the endorsement policy corresponding to the transaction proposal; if so, sends the endorsement result and the transaction proposal to the consensus node on the blockchain , so that the content to be uploaded to the chain can be processed on the chain through the consensus node. This method can judge whether to upload the content to be uploaded according to the endorsement result, thereby improving the legitimacy of the content to be uploaded.

Corresponding to the above method embodiment, the embodiment of the present invention provides a transaction endorsement device in the blockchain, the device is set at the endorsement node in the blockchain, as shown in Figure 10, the device includes:

The proposal receiving module 1001 is used to receive the transaction proposal from the client; wherein, the transaction proposal includes the content to be uploaded;

The review module 1002 is used to simulate the execution of smart contracts on the blockchain to review the content to be uploaded to the chain and obtain the review results;

The result returning module 1003 is configured to generate an endorsement result according to the audit result, and return the endorsement result to the above-mentioned client.

The above-mentioned transaction endorsement device in the block chain, the device is set in the endorsement node in the block chain, the device first receives the transaction proposal from the client; then simulates the execution of the smart contract on the block chain to review the transaction proposal On-chain content; finally, an endorsement result is generated based on the audit result, and the endorsement result is returned to the client. The present invention reviews the content to be uploaded through the smart contract on the block chain. The review process is open and transparent, avoiding the interference of the review result by subjective factors, thereby improving the fairness and rationality of the content review on the block chain.

Further, the above audit module 1002 is used to: call the preset content audit algorithm through the smart contract on the blockchain; wherein, the content audit algorithm runs on the endorsement node; through the content audit algorithm, judge the content to be uploaded Whether it contains preset sensitive words; if the content to be uploaded does not contain sensitive words, the audit result is determined to be legal; if the content to be uploaded contains sensitive words, the audit result is determined to be illegal.

Further, the above audit module 1002 is also used to: match the content to be uploaded with the sensitive lexicon corresponding to the content audit algorithm to obtain the matching result; wherein, the sensitive lexicon and the hash value of the sensitive lexicon are stored On the blockchain; if the matching result is a matching failure, it is determined that the content to be uploaded does not contain sensitive words; if the matching result is a successful match, it is determined that the content to be uploaded contains sensitive words.

Further, the above review module 1002 is also used for: if the content to be uploaded does not contain sensitive words, call a third-party service to review the content to be uploaded through a preset network interface; if the third-party service passes the review, determine the review result as legal.

Further, the above-mentioned result returning module 1003 is configured to: sign the review result to obtain the signed review result; determine the signed review result as the endorsement result.

The embodiment of the present invention provides another transaction endorsement device in the blockchain, which is set on the client side in the blockchain, as shown in Figure 11, the device includes:

Proposal generating module 1101, configured to generate a transaction proposal according to the content to be linked if the content to be linked is received; wherein, the transaction proposal includes the content to be linked;

The proposal sending module 1102 is used to send the above transaction proposal to the endorsement node included in the endorsement policy, so as to simulate the execution of the smart contract on the blockchain through the endorsement node, to review the content to be uploaded to the chain, and obtain the review result; according to the review result Generate endorsement results.

The transaction endorsement device in the above blockchain, if it receives the content to be uploaded, generates a transaction proposal based on the content to be uploaded; then sends the transaction proposal to the endorsement node included in the endorsement policy to simulate the execution area through the endorsement node The smart contract on the block chain is used to review the content to be uploaded to the chain and obtain the review result; the endorsement result is generated according to the review result. This method reviews the content to be uploaded through the smart contract on the blockchain endorsement node, and is not controlled by any individual or organization. Therefore, the review process is open and transparent, avoiding the interference of the review results by subjective factors, thereby improving the blockchain. The fairness and rationality of chain content review.

Further, the above device further includes: a result receiving module, configured to receive the endorsement result returned by the endorsement node; a judging module, configured to judge whether the endorsement result complies with the endorsement policy corresponding to the transaction proposal; If yes, send the endorsement result and the transaction proposal to the consensus node on the block chain, so as to process the content to be uploaded on the chain through the consensus node.

Further, the above-mentioned endorsement policy includes multiple endorsement nodes; the above-mentioned judging module is also used to: determine the number of endorsement nodes of the endorsement results returned by the multiple endorsement nodes contained in the endorsement policy; when the number of endorsement nodes is greater than the preset threshold , determine whether the endorsement result returned by each of the endorsement nodes is an endorsement pass; if the endorsement results returned by multiple endorsement nodes are all endorsement passes, determine that the endorsement results returned by the endorsement node conform to the endorsement corresponding to the transaction proposal Strategy.

The implementation principle and technical effect of the transaction endorsement device in the blockchain provided by the embodiment of the present invention are the same as those of the foregoing method embodiments. For a brief description, the parts not mentioned in the device embodiments can be implemented by referring to the foregoing methods corresponding content in the example.

The embodiment of the present invention also provides a blockchain network. As shown in FIG. 12 , the blockchain network includes a client 1201 and an endorsement node 1202 .

The above-mentioned client 1201 is used to send a transaction proposal to the endorsement node; wherein, the transaction proposal includes content to be uploaded to the chain.

The above-mentioned endorsement node 1202 is used to simulate the execution of the smart contract on the block chain to review the received content to be uploaded to the chain, and obtain the review result; and generate an endorsement result according to the review result, and return the endorsement result to the above-mentioned client 1201.

The above-mentioned blockchain network reviews the content to be uploaded through the smart contract on the blockchain endorsement node, and is not controlled by any individual or organization. Therefore, the review process is open and transparent, avoiding the interference of the review results by subjective factors, thereby improving the district The fairness and rationality of content review on the blockchain.

Further, the above-mentioned endorsement node 1202 is also used to: call the preset content review algorithm through the smart contract on the above-mentioned blockchain; wherein, the content review algorithm runs on the endorsement node; Whether the content contains preset sensitive words; if the above-mentioned content to be uploaded does not contain sensitive words, the audit result is determined to be legal; if the above-mentioned content to be uploaded contains sensitive words, the audit result is determined to be illegal.

Further, the above-mentioned endorsement node 1202 is further configured to: sign the above-mentioned review result to obtain the signed review result; and determine the signed review result as the endorsement result.

Further, the above-mentioned blockchain network also includes: a consensus node; the client 1201 is also used to receive the endorsement result returned by the above-mentioned endorsement node 1202; judge whether the above-mentioned endorsement result conforms to the endorsement policy corresponding to the transaction proposal; if so, the above-mentioned endorsement result and transaction proposals are sent to the consensus node; the above-mentioned consensus node is used for on-chain processing of the above-mentioned content to be on-chain.

Furthermore, the above-mentioned blockchain network also includes a submission node; the consensus node is also used to: receive the endorsement results and transaction proposals from the client, sort the contents to be uploaded in the transaction proposals according to the preset consensus algorithm, and for the sorting After the content to be uploaded to the chain, a block is generated according to the preset block strategy, and the block is sent to the submitting node; the submitting node is used to: verify the content to be uploaded in the block, and treat the The content on the chain is processed on the chain.

The implementation principle and technical effect of the blockchain network provided by the embodiment of the present invention are the same as those of the foregoing method embodiments. For a brief description, the parts not mentioned in the blockchain network embodiments can refer to the foregoing method embodiments corresponding content.

The embodiment of the present invention also provides a server and a user terminal for running the transaction endorsement method in the block chain; as shown in FIG. 13 , it includes a processor 101 and a memory 100. Executable machine-executable instructions, the processor 101 executes the machine-executable instructions to implement the transaction endorsement method in the blockchain shown in the above embodiments.

Further, the server shown in FIG. 13 further includes a bus 102 and a communication interface 103 , and the processor 101 , the communication interface 103 and the memory 100 are connected through the bus 102 .

Wherein, the memory 100 may include a high-speed random access memory (RAM, Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 103 (which may be wired or wireless), and the Internet, wide area network, local network, metropolitan area network, etc. can be used. The bus 102 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one double-headed arrow is used in FIG. 13 , but it does not mean that there is only one bus or one type of bus.

The processor 101 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 101 or instructions in the form of software. The above-mentioned processor 101 can be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as CPU), a network processor (Network Processor, referred to as NP), etc.; it can also be a digital signal processor (Digital Signal Processing, referred to as DSP) , Application Specific Integrated Circuit (ASIC for short), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and the like. The steps of the methods disclosed in the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 100, and the processor 101 reads the information in the memory 100, and completes the steps of the methods in the foregoing embodiments in combination with its hardware.

The embodiment of the present invention also provides a machine-readable storage medium, the machine-readable storage medium stores machine-executable instructions, and when the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt the processor to Realize the above-mentioned transaction endorsement method in the block chain, the specific implementation can refer to the method embodiment, and will not be repeated here.

The transaction endorsement method and device in the blockchain provided by the embodiments of the present invention, and the computer program product of the blockchain network include a computer-readable storage medium storing program codes, and the instructions included in the program codes can be used to execute the preceding For the methods described in the method embodiments, reference may be made to the method embodiments for specific implementation, and details are not repeated here.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (18)

1. A transaction endorsement method in a block chain, characterized in that the method is applied to an endorsement node in the block chain, and the method includes: Receive a transaction proposal from the client; wherein, the transaction proposal includes content to be uploaded; Simulate the execution of the smart contract on the blockchain to review the content to be uploaded and obtain the review results; Generate an endorsement result according to the review result, and return the endorsement result to the client. 2. The method according to claim 1, wherein the step of simulating the execution of the smart contract on the blockchain to review the content to be uploaded includes: Through the smart contract on the block chain, call the preset content audit algorithm; wherein, the content audit algorithm runs on the endorsement node; Through the content review algorithm, it is judged whether the content to be uploaded contains preset sensitive words; If the sensitive word is not included in the content to be uploaded, it is determined that the audit result is legal; If the content to be uploaded contains the sensitive word, it is determined that the audit result is illegal. 3. The method according to claim 2, wherein the step of judging whether preset sensitive words are included in the content to be uploaded comprises: Match the content to be uploaded with the sensitive lexicon corresponding to the content review algorithm to obtain a matching result; wherein, the sensitive lexicon and the hash value of the sensitive lexicon are stored in the block chain; If the matching result is a matching failure, it is determined that the sensitive word is not included in the content to be uploaded; If the matching result is a successful match, it is determined that the content to be uploaded contains the sensitive word. 4. The method according to claim 2, wherein the step of determining that the audit result is legal comprises: If the content to be uploaded does not contain the sensitive word, call a third-party service to review the content to be uploaded through a preset network interface; If the third-party service passes the audit, it is determined that the audit result is legal. 5. The method according to claim 1, wherein the step of generating an endorsement result according to the review result comprises: Sign the review result to obtain the signed review result; The verification result after signing is determined as the endorsement result. 6. A transaction endorsement method in a block chain, characterized in that the method is applied to a client in the block chain, and the method includes: If the content to be linked is received, a transaction proposal is generated according to the content to be linked; wherein, the transaction proposal includes the content to be linked; Send the transaction proposal to the endorsement node included in the endorsement policy, so as to simulate the execution of the smart contract on the blockchain through the endorsement node, to review the content to be uploaded to the chain, and obtain the review result; according to the review As a result, endorsement results are generated. 7. The method according to claim 6, wherein after the step of sending the transaction proposal to the endorsement node included in the endorsement policy, the method further comprises: Receive the endorsement result returned by the endorsement node; Judging whether the endorsement result complies with the endorsement policy corresponding to the transaction proposal; If so, the endorsement result and the transaction proposal are sent to the consensus node on the block chain, so that the content to be uploaded is processed on the chain through the consensus node. 8. The method according to claim 7, wherein the endorsement policy includes multiple endorsement nodes; The step of judging whether the endorsement result returned by the endorsement node complies with the endorsement policy corresponding to the transaction proposal includes: Determine the number of endorsement nodes of the endorsement results returned by the multiple endorsement nodes contained in the endorsement policy; When the number of the endorsement nodes is greater than a preset threshold, determine whether the endorsement result returned by each of the endorsement nodes is an endorsement pass; If the endorsement results returned by the multiple endorsement nodes are all endorsement passes, it is determined that the endorsement results returned by the endorsement nodes comply with the endorsement policy corresponding to the transaction proposal. 9. A transaction endorsement device in a block chain, characterized in that the device is set at an endorsement node in the block chain, and the device includes: The proposal receiving module is used to receive the transaction proposal from the client; wherein, the transaction proposal includes the content to be uploaded; An audit module, used to simulate the execution of the smart contract on the block chain, to audit the content to be uploaded to the chain, and obtain the audit result; A result returning module, configured to generate an endorsement result according to the review result, and return the endorsement result to the client. 10. A transaction endorsement device in a block chain, characterized in that the device is set on a client in the block chain, and the device includes: A proposal generating module, configured to generate a transaction proposal according to the content to be linked if the content to be linked is received; wherein, the transaction proposal includes the content to be linked; The proposal sending module is used to send the transaction proposal to the endorsement node included in the endorsement policy, so as to simulate the execution of the smart contract on the block chain through the endorsement node, so as to review the content to be uploaded and get the review Result; an endorsement result is generated according to the review result. 11. A block chain network, characterized in that, the block chain network includes a client and an endorsement node; The client is used to send a transaction proposal to the endorsement node; wherein, the transaction proposal includes content to be uploaded; The endorsement node is used to simulate the execution of the smart contract on the block chain to review the received content to be uploaded to the chain, and obtain the review result; and generate an endorsement result according to the review result, and return the endorsement result to the client. 12. The blockchain network according to claim 11, wherein the endorsement node is also used for: Through the smart contract on the block chain, call the preset content audit algorithm; wherein, the content audit algorithm runs on the endorsement node; Through the content review algorithm, it is judged whether the content to be uploaded contains preset sensitive words; If the sensitive word is not included in the content to be uploaded, it is determined that the audit result is legal; If the content to be uploaded contains the sensitive word, it is determined that the audit result is illegal. 13. The blockchain network according to claim 11, wherein the endorsement node is also used for: Sign the review result to obtain the signed review result; The verification result after signing is determined as the endorsement result. 14. The blockchain network according to claim 11, wherein the blockchain network further comprises: a consensus node; The client is also used to receive the endorsement result returned by the endorsement node; judge whether the endorsement result conforms to the endorsement policy corresponding to the transaction proposal; if so, send the endorsement result and the transaction proposal to the consensus node; The consensus node is used to perform uplink processing on the content to be uplinked. 15. The block chain network according to claim 11, wherein the block chain network also includes submitting nodes; The consensus node is also used to: receive the endorsement result and transaction proposal from the client, sort the content to be uploaded in the transaction proposal according to the preset consensus algorithm, and for the sorted content to be uploaded, according to The preset block strategy generates a block and sends the block to the submission node; The submitting node is used for: verifying the content to be uploaded in the block, and performing uploading processing on the content to be uploaded after passing the verification. 16. A server, comprising a processor and a memory, the memory storing machine-executable instructions capable of being executed by the processor, the processor executing the machine-executable instructions to achieve claim 1 The transaction endorsement method in the blockchain described in any one of to 5. 17. A user terminal, characterized in that it includes a processor and a memory, the memory stores machine-executable instructions that can be executed by the processor, and the processor executes the machine-executable instructions to realize the claims The transaction endorsement method in the block chain described in any one of 6 to 8. 18. A machine-readable storage medium, wherein the machine-readable storage medium stores machine-executable instructions, and when the machine-executable instructions are called and executed by a processor, the machine-executable instructions cause The processor implements the transaction endorsement method in the block chain according to any one of claims 1 to 8.