WO2021204044A1

WO2021204044A1 - Correction of blockchain data

Info

Publication number: WO2021204044A1
Application number: PCT/CN2021/084326
Authority: WO
Inventors: 程龙; 李艳鹏
Original assignee: 支付宝(杭州)信息技术有限公司
Priority date: 2020-04-10
Filing date: 2021-03-31
Publication date: 2021-10-14
Also published as: CN112037057B; CN111192146A; CN112037057A; CN111192146B

Abstract

Provided are a method and apparatus for correcting blockchain data. The method comprises: a node device of a data source blockchain sending, across chains, a correction message for service data to an audit blockchain, wherein the correction message comprises target correction service data obtained by carrying out data correction on service data to be corrected, so that the audit blockchain carries out correction auditing on the service data on the basis of the target correction service data, and deposits, after the audit is passed, a generated audit certificate in the audit blockchain; receiving an identifier of the audit certificate sent by a node device of the audit blockchain across chains; and sending a target correction transaction to the data source blockchain, so that the target correction service data included in the target correction transaction, an abstract of the target transaction and the identifier of the audit certificate are stored in the data source blockchain.

Description

Correction of blockchain data

Technical field

One or more implementations of this specification relate to the field of blockchain technology, in particular to the correction of blockchain data.

Background technique

Blockchain technology, also known as distributed ledger technology, is an emerging technology in which several computing devices participate in "bookkeeping" and jointly maintain a complete distributed database. Because the blockchain technology has the characteristics of decentralization, openness and transparency, each computing device can participate in database records, and the rapid data synchronization between computing devices, the blockchain technology has been widely used in many fields. To apply.

Summary of the invention

One or more implementations of this specification provide a method, device and computer equipment for correcting blockchain data.

According to the first aspect of one or more implementations of this specification, a method for correcting blockchain data is proposed, which is applied to node devices in the data source blockchain; the data source blockchain and the audit blockchain Cross-chain connection; the data source block chain contains the target transaction including the business data to be corrected; the method includes: the node device of the data source block chain sends the target transaction to the audit block chain cross-chain The correction message of the business number; the correction message includes target corrected business data obtained by data correction of the business data to be corrected, so that the audit blockchain can correct the business based on the target corrected business data The data is revised and audited, and after the audit is passed, the generated audit certificate is stored in the audit blockchain; the node device receiving the audit blockchain sends the identification of the audit certificate across the chain; and The data source blockchain sends the target corrected transaction so that the target corrected business data, the summary of the target transaction, and the identification of the audit certificate included in the target corrected transaction are stored in the data source blockchain .

According to the second aspect of one or more implementations of this specification, a method for correcting blockchain data is proposed, which is applied to auditing node devices in the blockchain; the data source blockchain and the auditing blockchain are cross-linked Chain connection; the data source block chain contains the target transaction including the business data to be corrected; the method includes: the node device of the audit block chain receives the correction sent by the data source block chain across the chain Message, the correction message includes target correction business data obtained by data correction of the business data to be corrected; a correction audit is performed on the business data based on the target correction business data, and the generated audit will be generated after the audit is passed The certificate is stored on the audit blockchain; the identification of the audit certificate is sent to the data source blockchain across the chain, so that the node device of the data source blockchain sends the data source block to the data source block. The chain sends a target correction transaction, and the target correction transaction includes the target correction business data, a summary of the target transaction, and an identification of the audit certification.

According to the third aspect of one or more implementations of this specification, a device for correcting blockchain data is proposed, which is applied to the node equipment in the data source blockchain; the data source blockchain and the audit blockchain Cross-chain connection; the data source block chain contains the target transaction including the business data to be corrected; the device includes: a sending unit that sends a cross-chain correction message for the business number to the audit block chain The correction message includes target corrected business data obtained by data correction of the business data to be corrected, so that the audit blockchain performs a correction audit on the business data based on the target corrected business data, and in After the audit is passed, the generated audit certificate is stored on the audit blockchain; the receiving unit receives the identifier of the audit certificate sent by the node device of the audit blockchain across the chain; the storage unit sends the audit certificate to the The data source blockchain sends the target corrected transaction so that the target corrected business data, the summary of the target transaction, and the identification of the audit certificate included in the target corrected transaction are stored in the data source blockchain .

According to the fourth aspect of one or more implementations of this specification, a device for correcting blockchain data is proposed, which is applied to auditing node equipment in the blockchain; the data source blockchain and the auditing blockchain are cross-linked. Chain connection; the data source block chain contains the target transaction including the business data to be corrected; the device includes: a receiving unit that receives the correction message sent by the data source block chain across the chain, the correction message Including target corrected business data obtained by data correction of the business data to be corrected; an audit unit, which performs a correction audit on the business data based on the target corrected business data; a depository unit, which will generate an audit after the audit is passed The proof is stored on the audit blockchain; the sending unit sends the identification of the audit certification across the chain to the data source blockchain, so that the node device of the data source blockchain sends the data to the data source blockchain. The source blockchain sends a target correction transaction, and the target correction transaction includes the target correction business data, a summary of the target transaction, and an identification of the audit certification.

According to a fifth aspect of one or more implementation manners of this specification, a computer device is proposed, including: a memory and a processor; the memory stores a computer program that can be run by the processor; When the computer program is described, the method for correcting the blockchain data executed by the node device of the data source blockchain is executed.

According to the sixth aspect of one or more implementation manners of this specification, a computer device is proposed, including: a memory and a processor; the memory stores a computer program that can be run by the processor; When the computer program is described, the method for correcting the blockchain data executed by the node device of the audit blockchain is executed.

The block chain data correction method, device and computer equipment provided by the various embodiments of this manual use the audit block chain to audit the corrected business data obtained from the correction of the business data to be corrected stored in the data source block chain, and then After the audit is passed, the corrected business data in the data source block chain is authenticated and stored in the audit block chain, so that the data source block chain can store the corrected business data and the identification of the audit certification passed by the audited block chain. In order to facilitate users to verify the credibility of the above-mentioned revised business data in the audit blockchain.

Description of the drawings

FIG. 1 is a schematic flowchart of a method for correcting blockchain data provided by an exemplary embodiment;

FIG. 2 is a schematic diagram of a process of applying for a revised qualification through a data source blockchain provided by an exemplary embodiment;

FIG. 3 is a schematic diagram of a device for correcting blockchain data on a device side of a data source blockchain node according to an exemplary embodiment;

FIG. 4 is a schematic diagram of a correction device for auditing blockchain data at the device end of a blockchain node according to an exemplary embodiment;

FIG. 5 is a hardware structure diagram of an implementation of the correction device for operating the blockchain data provided in this specification.

Detailed ways

Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with one or more embodiments in this specification. On the contrary, they are merely examples of devices and methods consistent with some aspects of one or more embodiments of this specification as detailed in the appended claims.

It should be noted that in other embodiments, the steps of the corresponding method are not necessarily executed in the order shown and described in this specification. In some other embodiments, the method may include more or fewer steps than described in this specification. In addition, a single step described in this specification may be decomposed into multiple steps for description in other embodiments; and multiple steps described in this specification may also be combined into a single step in other embodiments. describe.

As the application business supported by the blockchain matures, the data stored in the blockchain becomes more and more abundant; based on the consensus mechanism of the blockchain, the use of the blockchain can realize that once the data information is uploaded, it cannot be tampered with; but in practical applications , There may be errors in the information and data uploaded to the blockchain due to system problems or human errors, and there are scenarios that need to be corrected.

In view of the above problems, one or more implementations of this specification provide a method for correcting blockchain data, which is used to correct the business data on the data source blockchain; the data source blockchain and audit Blockchain is connected across chains.

The blockchain or blockchain network described in one or more embodiments of this specification can specifically refer to a P2P network system with a distributed data storage structure reached by each node device through a consensus mechanism. Ledger data is distributed in time-connected "blocks". The next block can contain the data summary of the previous block and is based on the specific consensus mechanism (such as POW, POS, DPOS or PBFT, etc.) ) To achieve full backup of all or part of the node data.

Those skilled in the art are well aware that because the blockchain network system operates under the corresponding consensus mechanism, the data that has been included in the blockchain database is difficult to be tampered with by any node. For example, a blockchain using Pow consensus requires at least full Only 51% of the network's computing power can tamper with existing data. Therefore, the blockchain system has the characteristics of ensuring data security and preventing attack and tampering that other centralized database systems cannot match.

For the real data generated in the physical world, it can be constructed into a standard transaction format supported by the blockchain, and then published to the blockchain, and the node devices in the blockchain will perform consensus processing on the received transactions , And after reaching a consensus, the node device as the bookkeeping node in the block chain will package the transaction into the block and carry out persistent storage in the block chain.

No matter which consensus algorithm the blockchain uses, the accounting node can package the received transaction to generate the latest block, and send the generated latest block or the block header of the latest block to other node devices for consensus verification . If other node equipment receives the latest block or the block header of the latest block, it is verified that there is no problem, and the latest block can be appended to the end of the original blockchain to complete the accounting process of the blockchain. In the process of other nodes verifying the new block or block header sent by the accounting node, the transactions contained in the block can also be executed.

Blockchain is generally divided into three types: Public Blockchain, Private Blockchain and Consortium Blockchain. In addition, there can also be a combination of the above types, such as private chain + consortium chain, consortium chain + public chain, and so on.

Among them, the most decentralized one is the public chain. The public chain is represented by Bitcoin and Ethereum. Participants who join the public chain (also called nodes in the blockchain) can read the data records on the chain, participate in transactions, and compete for the accounting rights of new blocks, etc. . Moreover, each node can freely join or exit the network, and perform related operations.

The private chain is the opposite. The write permission of the network is controlled by an organization or institution, and the data read permission is regulated by the organization. In simple terms, a private chain can be a weakly centralized system with strict restrictions on nodes and a small number of nodes. This type of blockchain is more suitable for internal use by specific institutions.

Consortium chain is a block chain between public chain and private chain, which can realize "partial decentralization". Each node in the alliance chain usually has a corresponding entity or organization; nodes are authorized to join the network and form a stakeholder alliance to jointly maintain the operation of the blockchain.

It can be expected that the implementation provided in this specification can be implemented in any suitable type of blockchain network.

In one or more embodiments provided in this specification, the data source blockchain is a blockchain that stores a variety of business data information, which can provide related business support for its client users, such as on the data source blockchain It can store the origin, process, logistics, sales area and other information of a variety of commodities, so as to provide users with commodity traceability query services. The audit blockchain is a blockchain that includes user nodes that can audit the correctness or legality of the business data information stored on the data source blockchain. This manual does not specifically limit the cross-chain connection between the subscription blockchain and the data source blockchain. For example, the subscription blockchain can realize cross-chain docking through cross-chain relay.

Among them, the cross-chain relay can be connected to multiple blockchains through the bridge interface, and based on the implemented data handling logic, the synchronization of the cross-chain data between the multiple blockchains can be completed. The cross-chain technology used in the implementation of the above-mentioned cross-chain relay is not particularly limited in this specification; for example, in practical applications, multiple blocks can be combined through cross-chain mechanisms such as side-chain technology and notary technology. The chains are connected. When multiple blockchains are connected through cross-chain relays, the data on other blockchains can be read and authenticated between the blockchains, and they can also be deployed on other blockchains through cross-chain relays. Smart contract.

It should be noted that cross-chain relay is only used to transfer data between multiple blockchains, and does not require persistent storage of the transferred data, nor does it need to maintain the data status of the transferred data. In practical applications, cross-chain relays can be configured on devices, nodes, or platforms other than multiple blockchains to which they are connected, and can also be configured on node devices of multiple blockchains to which they are connected. It is not particularly limited in this specification.

In the embodiment illustrated in FIG. 1, the target transaction including the business data to be corrected is recorded in the data source blockchain. For example, the data source blockchain stores the origin information transaction of a certain brand of milk powder. Due to the wrong operation of the transaction uploader, the transaction shows that the origin of a certain brand of milk powder is A, but in fact, the origin of the brand of milk powder is B. The node equipment of the data source block chain can apply to the audit block chain to complete the correction of the milk powder production area information.

Figure 1 illustrates a method for correcting blockchain data based on the cross-chain interaction between the data source blockchain and the audit blockchain, including:

Step 102: The node device of the data source blockchain sends a correction message to the audit blockchain cross-chain, the correction message includes the target corrected business data obtained by data correction of the business data to be corrected in the target transaction .

The target corrected business data may include the correction result information obtained by the correction of the business data to be corrected, or the description information of the process or result of the correction of the business data to be corrected. For example, for the above-mentioned target transaction that contains a certain brand of milk powder where the origin is A, the corresponding target revised business data can be: "Origin B", or "revision of origin A to origin B" and other information.

Step 104: The node device of the audit blockchain performs a correction audit on the business data based on the target correction business data, and after the audit is passed, the generated audit certificate is stored in the audit blockchain.

The node user or organization (designated user) in the above audit blockchain that has the audit authority for the business data on the data source blockchain performs a correction audit on the business data based on the target correction business data. In another illustrated embodiment, the data source blockchain may set transaction acquisition permissions for the audit blockchain, and the correction message sent by the data source blockchain also includes the summary (TxID) of the target transaction, to Facilitate auditing of the blockchain can obtain the target transaction across chains in the data source blockchain based on the summary of the target transaction, and perform a correction audit on the business data based on the target transaction and the target corrected business data.

The above-mentioned correction audit of the business data may include auditing whether the target transaction is included in the data source blockchain, and auditing whether the sender (transaction uploader) of the target transaction is in the data source blockchain Upload one or more of the qualification of the business data, whether the business data to be corrected needs to be corrected, or whether the target corrected business data is corrected correctly.

The designated user node in the above audit blockchain that can perform audit on the target revised business data is usually a user node preset in the audit blockchain that can perform audit or authentication on business data; according to the specific audit blockchain The setting rules are different. The above-mentioned designated user node may be a designated user node, or may be a plurality of designated user nodes, or may be any node of the audit blockchain, which is not limited in this embodiment.

Auditing users or institutions in the auditing blockchain that have the audit authority to audit the business data on the data source blockchain can perform audits on the above-mentioned target revised business data based on the set audit process (such as smart contracts) on the chain, And obtain the audit results; you can also perform the audit of the above-mentioned target correction business data based on the set audit workflow software off-chain, and submit the audit results to the audit blockchain; you can also manually execute the above-mentioned target correction business data offline And submit audit results to the audit blockchain, etc.

When the above audit result is that the audit is passed, the node device of the audit blockchain can generate an audit certificate and store the audit certificate in the audit blockchain.

Specifically, the designated user node of the above-mentioned audit blockchain can send a target audit transaction for the above-mentioned target correction business data to the audit blockchain when the audit is completed and the audit result is passed, and the above-mentioned target audit transaction includes the above-mentioned target correction business data. And the designated user node of the aforementioned audit blockchain at least digitally signs the target revised business data based on the private key held.

In an illustrated embodiment, the aforementioned audit certification includes the aforementioned target audit transaction. Through the digital signature of the designated user on the target revised business data, it means that the designated user of the audit blockchain has passed and authenticated the target revised business data. Correspondingly, the identification of the audit certification is the summary (such as TxID) of the target audit transaction in the audit blockchain.

In another embodiment shown, the designated user of the audit blockchain can further generate an audit for one or more of the target revision business data, the target audit transaction, or the summary of the target audit transaction. Authentication certificate; the content of the above-mentioned audit authentication certificate may include the number of the audit authentication certificate, one or more of the target revised business data, the target audit transaction, or the summary of the target audit transaction, and the designated user node is based on The held private key digitally signs one or more of the target revised business data, the target audit transaction, or the summary of the target audit transaction. The audit certification includes the audit certification certificate, and the identifier of the audit certification is the number of the audit certification certificate.

In another embodiment shown, the node device of the audit blockchain can also generate a target audit record transaction, and the target audit record transaction may include auditing the target transaction and the target transaction by the designated user of the audit blockchain. Description of the audit process for the legality of the target revised business data, and send the aforementioned target audit record transaction to the aforementioned audit blockchain, so that the aforementioned audit blockchain can legalize the target transaction and the target revised business data for the designated user The audit process is carried out for evidence.

Step 106: The node device of the audit blockchain sends the identification of the audit certification to the data source blockchain across the chain.

Step 108: The node device of the data source block chain sends a target correction transaction to the data source block chain, so that the target correction business data included in the target correction transaction, the summary of the target transaction, and the result The identification of the audit certificate is stored in the data source blockchain.

At this point, the data source blockchain has completed the correction of the business data to be corrected on the blockchain, and the target of the correction-the target transaction (identification), the correction result-the target correction business data, and the audit certification of the correction result- —The audit certificate (identification) is correspondingly stored in the above target correction transaction to facilitate users of the data source blockchain and users of applications supported by the data source blockchain (such as traceability application services) to correct the target business data Review and verify the audit certification of the target revised business data, and the audit certification authority based on auditing blockchain users has improved the credibility of the target revised business data.

In another illustrated embodiment, in response to a service data query request sent by a client accessing the data source blockchain, target corrected service data and corresponding to the target corrected service data are sent to the client The identification of the audit certification, so that the client can query the audit certification from the audit blockchain based on the identification of the audit certification, and verify whether the target revised business data has been audited by the audit blockchain pass through.

For example, when the client of the data source blockchain initiates a traceability request for a certain brand of milk powder to the node device of the data source blockchain, the node device of the data source blockchain can send the client the production location of the brand of milk powder. The traceability data of information such as, logistics links, sales area, etc., and label description information such as "the production location is B, the blockchain audit has been audited, and the audit certificate number is 12345" in the production location information, so as to facilitate users based on the above certificate number Query the above-mentioned audit certificate in the audit blockchain to further verify the credibility of the above-mentioned information of production location B.

In one or more of the above embodiments, the data source blockchain and the audit blockchain are based on the implemented cross-chain connection method to perform data correction on the data source blockchain. Figure 2 illustrates the process of the data source blockchain applying to the audit blockchain to revise the qualification before the cross-chain connection between the data source blockchain and the audit blockchain is realized.

In an illustrated embodiment, the audit blockchain can be structured as a consortium chain, and its consortium member nodes can include business management agencies, audit agencies, regulatory agencies, and other authoritative institutions with high credit, which can be the data source blockchain The revised qualification application submitted will be reviewed, and a cross-chain connection configuration will be established with the data source blockchain after the review is passed.

As shown in Figure 2, the process for the above-mentioned data source blockchain to apply for a revised qualification authorization from the audit blockchain includes:

Step 202: The node device of the data source blockchain sends a revised qualification application to the node device of the audit blockchain through an off-chain channel.

Since the data source blockchain and the audit blockchain have not yet established a cross-chain connection at this time, the node equipment of the data source blockchain adopts an off-chain connection to send a revised qualification application to the node equipment of the audit blockchain. The above-mentioned revised qualification application may include information such as the identity information of the node user of the data source blockchain, the type of business data, and the scope of business applications supported by the data source blockchain.

Step 204: The node device of the audit blockchain constructs a revised qualification application transaction based on the revised qualification application, and sends the revised qualification application transaction to the audit blockchain.

The above-mentioned revised qualification application transactions included in the audit blockchain can be used for the record of the revised qualification application of the data source blockchain.

Step 206: The node device of the audit blockchain performs an audit of the revised qualification application, and sends the audit result to the audit blockchain.

In another embodiment shown, a smart contract for reviewing the revised qualification application is deployed on the audit blockchain, and the corresponding execution logic of the contract code of the smart contract includes the review logic and the audit result of the revised qualification application. Calculation logic; in response to the above-mentioned revised qualification application transaction, the above-mentioned smart contract is invoked, and based on the audit logic of the revised qualification application and the calculation logic of the audit result, the audit of the revised qualification application is performed, and the audit result is obtained by calculation.

The execution result of the smart contract will be included in the account status corresponding to the smart contract, and the node device that audits the blockchain can obtain the above audit results by monitoring the status database of the auditing blockchain.

Step 208: The node device of the audit blockchain sends the audit result to the node device of the data source blockchain based on the off-chain channel; when the audit result is passed, the data source blockchain and The audit blockchains each perform cross-chain configuration to realize cross-chain connection with each other.

Specifically, the cross-chain configuration performed by each of the data source blockchain and the audit blockchain includes: the data source blockchain executes the cross-chain configuration to authorize the audit blockchain to access the data source area The transaction included in the block chain; the data source blockchain executes the cross-chain message subscription configuration, so that the audit blockchain subscribes to the correction message sent by the data source blockchain cross-chain; the audit blockchain The cross-chain message subscription configuration is performed, so that the data source blockchain subscribes to the identification of the audit certificate sent by the audit blockchain cross-chain.

Since in step 104 shown in Figure 1, the audit blockchain needs to cross-chain to obtain the target transaction in the data source blockchain, the data source blockchain needs to set transaction acquisition permissions for the audit blockchain to enable the audit block The chain can directly access the transactions recorded in the data source blockchain ledger.

The audit blockchain is a blockchain including business management agencies, audit institutions, regulatory agencies and other institutions with higher credit. In order to ensure the data privacy and security of the audit blockchain, the data source blockchain will not be authorized to audit areas Direct access to the transactions included in the blockchain; therefore, the audit blockchain executes cross-chain message subscription configuration, so that the data source blockchain subscribes to the identity of the audit certificate sent by the audit blockchain cross-chain , The audit blockchain actively pushes the identification of the audit certification to the data source blockchain across the chain; accordingly, the data source blockchain executes the cross-chain message subscription configuration, so that the audit blockchain subscribes The correction message sent across the chain by the data source blockchain enables the data source blockchain to actively push the correction message across the chain to the audit blockchain.

Regarding the cross-chain message subscription configuration described in the foregoing embodiment, the subscriber's blockchain subscribes to messages stored or generated on the message source blockchain. By deploying a subscription contract on the message source block chain (data source block chain or audit block chain), and the node device of the message source block chain calls the above subscription contract to obtain the message (corrected message or audit certificate) subscribed by the subscriber The message source block chain pushes the message obtained from the execution of the subscription contract to the subscriber block chain across the chain, so as to realize the message from the message source block chain to the subscriber area in the way of "subscription + push" Transmission of the block chain. Compared with the direct access to obtain messages from the source blockchain by the subscriber's blockchain, the above-mentioned "subscription + push" method further protects the data privacy of the source blockchain and improves the efficiency of message notification.

Corresponding to the implementation of the above process, the implementation of this specification also provides a block chain data correction device 30 and 40. The devices 30 and 40 can be implemented by software, or can be implemented by hardware or a combination of software and hardware. Taking software implementation as an example, as a logical device, it is formed by reading the corresponding computer program instructions into the memory by the CPU (Central Process Unit, central processing unit) of the device where it is located. From the perspective of hardware, in addition to the CPU, memory, and storage shown in Figure 5, the device where the above-mentioned device is located usually also includes other hardware such as chips for wireless signal transmission and reception, and/or for implementing network communication functions. Other hardware such as boards.

As shown in Figure 3, this specification also provides a block chain data correction device 30, which is applied to the node equipment in the data source block chain; the data source block chain and the audit block chain are connected across the chain; The target transaction including the business data to be corrected is recorded in the data source blockchain; the device 30 includes:

The sending unit 302 sends a correction message for the business data to the audit blockchain cross-chain; the correction message includes target corrected business data obtained by data correction on the business data to be corrected, so that the The audit blockchain performs a revised audit on the business data based on the target revised business data, and after the audit is passed, the generated audit certificate is stored in the audit blockchain;

The receiving unit 304 receives the identifier of the audit certificate sent by the node device of the audit blockchain across the chain;

The depositing unit 306 sends the target correction transaction to the data source blockchain, so that the target correction business data included in the target correction transaction, the summary of the target transaction, and the identification of the audit certification are recorded in The data source is in the blockchain.

In another illustrated embodiment, the correction message further includes a summary of the target transaction. The audit blockchain performs a correction audit on the business data based on the target correction business data, including: the audit blockchain obtains the target transaction across chains based on the summary of the target transaction; based on the target The transaction and the target revised business data are subject to revision audits on the business data.

In yet another embodiment shown, the performing correction audit on the business data includes one or more of the following: auditing whether the target transaction is included in the data source blockchain; auditing the Whether the sender of the target transaction has the qualification to upload the business data; audit whether the business data to be corrected needs to be corrected; audit whether the target corrected business data is modified correctly.

In another embodiment shown, the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on the support Some private keys are at least a digital signature for the target revised business data; the audit certificate includes the target audit transaction; and the identifier of the audit certificate is a summary of the target audit transaction.

In another embodiment shown, the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on the support Some private keys are at least a digital signature for the target correction service data. The audit certification includes an audit certification certificate generated by a designated user of the audit blockchain for one or more of the target revised business data, the target audit transaction, or the summary of the target audit transaction; The identifier of the audit certification certificate is the number of the audit certification certificate.

In another embodiment shown, the sending unit 302 is further configured to: in response to a service data query request sent by a client accessing the data source blockchain, send a target correction service to the client Data and the identification of the audit certification corresponding to the target revised business data, so that the client can query the audit certification from the audit blockchain based on the identification of the audit certification, and verify the target revised business data Whether it has been approved by the audit blockchain audit.

In another illustrated embodiment, the business data includes traceability data; the business data query request includes a business data traceability request.

For the implementation process of the functions and roles of each unit in the above device 30, please refer to the implementation process of the corresponding steps in the blockchain data correction method executed by the node device of the data source blockchain. Part of the explanation is enough, so I won't repeat it here.

As shown in Figure 4, this specification also provides a block chain data correction device 40, which is applied to the node equipment in the audit block chain; the data source block chain and the audit block chain are connected across the chain; The target transaction including the business data to be corrected is recorded in the data source blockchain; the device 40 includes:

The receiving unit 402 receives a correction message sent across the chain of the data source blockchain, where the correction message includes target corrected business data obtained by data correction on the business data to be corrected;

The audit unit 404 performs a correction audit on the business data based on the target correction business data;

The certificate depositing unit 406, after passing the audit, deposits the generated audit certificate on the audit blockchain;

The sending unit 408 sends the identification of the audit certificate to the data source blockchain across the chain, so that the node device of the data source blockchain sends the target correction transaction to the data source blockchain. The target correction transaction includes the target correction business data, the summary of the target transaction, and the identification of the audit certification.

In another illustrated embodiment, the correction message further includes a summary of the target transaction; the audit unit 404 is further configured to: obtain the target transaction across chains based on the summary of the target transaction; The target transaction and the target corrected business data perform a correction audit on the business data.

In another embodiment shown, the audit unit 404 is further configured to audit one or more of the following contents: audit whether the target transaction is included in the data source blockchain; audit the target Whether the sender of the transaction has the qualification to upload the business data; audit whether the business data to be corrected needs to be corrected; audit whether the target corrected business data is modified correctly.

In another embodiment shown, the evidence storage unit 406 is further configured to send the target audit record transaction to the audit blockchain, so that the designated user included in the target audit record transaction can The description of the audit process of the legality of the target transaction and the target revised business data is stored in the audit blockchain.

In another embodiment shown, the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on the support Some private keys are at least a digital signature for the target revised business data; the audit certificate includes the target audit transaction; the identifier of the audit certificate is a summary of the target audit transaction.

In another embodiment shown, the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on the support Some private keys are at least the digital signature of the target revised business data; the audit certificate includes the designated user of the audit blockchain for the target revised business data, the target audit transaction, or the target audit One or more audit certification certificates generated in the summary of the transaction; the identifier of the audit certification certificate is the number of the audit certification certificate.

In another embodiment shown, the audit blockchain is a consortium chain.

For the implementation process of the functions and roles of each unit in the above device 40, please refer to the implementation process of the corresponding steps in the method for correcting blockchain data executed by the node device of the audit blockchain. Just explain it, so I won't repeat it here.

The device implementations described above are merely illustrative, where the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical modules, that is, they may be located in One place, or it can be distributed to multiple network modules. Some or all of the units or modules can be selected according to actual needs to achieve the purpose of the solution in this specification. Those of ordinary skill in the art can understand and implement it without creative work.

The devices, units, and modules described in the foregoing implementation manners may be specifically 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 computer, a wearable device, or a combination of any of these devices.

Corresponding to the foregoing method embodiments, the embodiments of this specification also provide a computer device. As shown in FIG. 5, the computer device includes a memory and a processor. Among them, the memory stores a computer program that can be run by the processor; when the processor runs the stored computer program, it executes the method for correcting blockchain data executed by the node device of the data source blockchain in the embodiment of this specification. Various steps. Please refer to the previous content for a detailed description of each step of the blockchain data correction method executed by the node device of the data source blockchain, and will not be repeated.

Corresponding to the foregoing method embodiments, the embodiments of this specification also provide a computer device. As shown in FIG. 5, the computer device includes a memory and a processor. Among them, the memory stores a computer program that can be run by the processor; when the processor runs the stored computer program, it executes each of the blockchain data correction methods executed by the node device auditing the blockchain in the implementation of this specification. step. Please refer to the previous content for the detailed description of each step of the method for correcting the blockchain data executed by the node device of the audit blockchain, and will not be repeated.

The above descriptions are only the preferred embodiments of this specification and are not intended to limit this specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification shall be included in this specification. Within the scope of protection.

In a typical configuration, the computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include non-permanent memory in computer readable media, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of computer readable media.

Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology. The 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), 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 cassettes, 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.

It should also be noted that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or equipment including a series of elements not only includes those elements, but also includes Other elements that are not explicitly listed, or also include elements inherent to such processes, methods, commodities, or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, commodity, or equipment that includes the element.

Those skilled in the art should understand that the implementation of this specification can be provided as a method, a system or a computer program product. Therefore, the implementation manners in this specification may adopt the form of a complete hardware implementation, a complete software implementation, or a combination of software and hardware implementations. Moreover, the implementation of this specification may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. .

Claims

A method for correcting block chain data is applied to the node equipment in the data source block chain; the data source block chain is connected to the audit block chain across the chain; the data source block chain contains information including waiting The target transaction of the revised business data; the method includes:

The node device of the data source blockchain sends a cross-chain correction message for the business number to the audit blockchain; the correction message includes the target correction business obtained by data correction on the business data to be corrected Data, so that the audit blockchain performs a correction audit on the business data based on the target correction business data, and after the audit is passed, the generated audit certificate is stored in the audit blockchain;

Receiving the identifier of the audit certificate sent by the node device of the audit blockchain across the chain;

Send the target correction transaction to the data source blockchain, so that the target correction business data included in the target correction transaction, the summary of the target transaction, and the identification of the audit certificate are stored in the data source area Block chain.
The method according to claim 1, wherein the correction message further includes a summary of the target transaction;

The audit blockchain performs a revised audit on the business data based on the target revised business data, including:

The audit blockchain obtains the target transaction across chains based on the summary of the target transaction;

Performing a correction audit on the business data based on the target transaction and the target correction business data.
The method according to claim 1 or 2, wherein said performing a correction audit on the business data includes one or more of the following:

Audit whether the target transaction is included in the data source blockchain;

Audit whether the sender of the target transaction has the qualification to upload the business data;

Audit the business data to be revised whether it needs to be revised;

Audit the correctness of the revised target business data.
The method according to claim 1 or 2, wherein the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on The held private key is at least the digital signature of the target revised business data;

The audit certificate includes the target audit transaction; the identifier of the audit certificate is a summary of the target audit transaction.
The method according to claim 1 or 2, wherein the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on The held private key is at least the digital signature of the target revised business data;

The audit certification includes an audit certification certificate generated by a designated user of the audit blockchain for one or more of the target revised business data, the target audit transaction, or the summary of the target audit transaction; The identifier of the audit certification certificate is the number of the audit certification certificate.
The method according to claim 1, further comprising:

In response to the business data query request sent by the client accessing the data source blockchain, the target corrected business data and the identification of the audit certification corresponding to the target corrected business data are sent to the client, so that the Based on the identifier of the audit certification, the client queries the audit blockchain for the audit certification, and verifies whether the target revised business data has been audited by the audit blockchain.
The method according to claim 1, wherein the service data includes traceability data; and the service data query request includes a service data traceability request.
A method for correcting block chain data is applied to the node equipment in the audit block chain; the data source block chain and the audit block chain are connected across the chain; the data source block chain includes items to be corrected The target transaction of business data; the method includes:

The node device of the audit blockchain receives a correction message sent across the chain of the data source blockchain, where the correction message includes target corrected business data obtained by data correction of the business data to be corrected;

Perform a revised audit on the business data based on the target revised business data, and store the generated audit certificate on the audit blockchain after the audit is passed;

The identification of the audit certification is sent to the data source block chain across the chain, so that the node device of the data source block chain sends a target correction transaction to the data source block chain, and the target correction transaction includes The target revised business data, the summary of the target transaction, and the identification of the audit certification.
The method according to claim 8, wherein the correction message further includes a summary of the target transaction;

The performing a correction audit on the business data based on the target correction business data includes:

Based on the summary of the target transaction, obtain the target transaction across chains;

Performing a correction audit on the business data based on the target transaction and the target correction business data.
The method according to claim 8 or 9, said performing a correction audit on the business data includes one or more of the following:

Audit whether the target transaction is included in the data source blockchain;

Audit whether the sender of the target transaction has the qualification to upload the business data;

Audit the business data to be revised whether it needs to be revised;

Audit the correctness of the revised target business data.
The method according to claim 8 or 9, further comprising: generating a target audit record transaction, and sending the target audit record transaction to the audit blockchain, so that the designated user included in the target audit record transaction may The description of the audit process of the legality of the target transaction and the target revised business data is stored in the audit blockchain.
The method according to claim 8 or 9, wherein the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on The held private key is at least the digital signature of the target revised business data;

The audit certificate includes the target audit transaction; the identifier of the audit certificate is a summary of the target audit transaction.
The method according to claim 8 or 9, wherein the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on The held private key is at least the digital signature of the target revised business data;

The audit certification includes an audit certification certificate generated by a designated user of the audit blockchain for one or more of the target revised business data, the target audit transaction, or the summary of the target audit transaction; The identifier of the audit certification certificate is the number of the audit certification certificate.
According to the method of claim 8, the audit blockchain is a consortium chain.
The method according to claim 8, wherein the service data includes traceability data; and the service data query request includes a service data traceability request.
A block chain data correction device is applied to the node equipment in the data source block chain; the data source block chain and the audit block chain are connected across the chain; and the data source block chain contains information including waiting The revised target transaction of the business data; the device includes:

A sending unit, which sends a cross-chain correction message for the business data to the audit blockchain; the correction message includes target corrected business data obtained by data correction on the business data to be corrected, so that the audit The blockchain performs a revised audit on the business data based on the target revised business data, and after the audit is passed, the generated audit certificate is stored in the audit blockchain;

A receiving unit, which receives the identifier of the audit certificate sent across the chain by the node device of the audit blockchain;

The depositing unit sends a target correction transaction to the data source blockchain, so that the target correction business data included in the target correction transaction, the summary of the target transaction, and the identification of the audit certificate are stored in the place The data source is in the blockchain.
The device according to claim 16, wherein the correction message further includes a summary of the target transaction;

The audit blockchain performs a revised audit on the business data based on the target revised business data, including:

The audit blockchain obtains the target transaction across chains based on the summary of the target transaction;

Performing a correction audit on the business data based on the target transaction and the target correction business data.
According to the device according to claim 16 or 17, said correcting and auditing the business data includes one or more of the following:

Audit whether the target transaction is included in the data source blockchain;

Audit whether the sender of the target transaction has the qualification to upload the business data;

Audit the business data to be revised whether it needs to be revised;

Audit the correctness of the revised target business data.
The device according to claim 16 or 17, wherein the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on The held private key is at least the digital signature of the target revised business data;

The audit certificate includes the target audit transaction; the identifier of the audit certificate is a summary of the target audit transaction.
The device according to claim 16 or 17, wherein the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on The held private key is at least the digital signature of the target revised business data;

The audit certification includes an audit certification certificate generated by a designated user of the audit blockchain for one or more of the target revised business data, the target audit transaction, or the summary of the target audit transaction; The identifier of the audit certification certificate is the number of the audit certification certificate.
The apparatus according to claim 8, wherein the sending unit is further configured to:

In response to the business data query request sent by the client accessing the data source blockchain, the target corrected business data and the identification of the audit certification corresponding to the target corrected business data are sent to the client, so that the Based on the identifier of the audit certification, the client queries the audit blockchain for the audit certification, and verifies whether the target revised business data has been audited by the audit blockchain.
The apparatus according to claim 16, wherein the service data includes traceability data; and the service data query request includes a service data traceability request.
A device for correcting block chain data is applied to the node equipment in the audit block chain; the data source block chain is connected to the audit block chain across the chain; the data source block chain includes items to be corrected The target transaction of business data; the device includes:

A receiving unit to receive a correction message sent across the chain of the data source blockchain, the correction message including target correction business data obtained by data correction on the business data to be corrected;

An audit unit, which performs a correction audit on the business data based on the target correction business data;

The certificate deposit unit, after the audit is passed, deposit the generated audit certificate on the audit blockchain;

The sending unit sends the identification of the audit certificate to the data source block chain across the chain, so that the node device of the data source block chain sends the target correction transaction to the data source block chain, and the target The corrected transaction includes the target corrected business data, the summary of the target transaction, and the identification of the audit certification.
The device according to claim 23, wherein the correction message further includes a summary of the target transaction;

The audit unit is further used for:

Based on the summary of the target transaction, obtain the target transaction across chains;

Performing a correction audit on the business data based on the target transaction and the target correction business data.
According to the device according to claim 23 or 24, the audit unit is further configured to audit one or more of the following contents:

Audit whether the target transaction is included in the data source blockchain;

Audit whether the sender of the target transaction has the qualification to upload the business data;

Audit the business data to be revised whether it needs to be revised;

Audit the correctness of the revised target business data.
The device according to claim 23 or 24, the certificate storage unit is further configured to send the target audit record transaction to the audit blockchain, so that the designated user included in the target audit record transaction can The description of the audit process of the legality of the target transaction and the target revised business data is stored in the audit blockchain.
The device according to claim 23 or 24, the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on The held private key is at least the digital signature of the target revised business data;

The audit certificate includes the target audit transaction; the identifier of the audit certificate is a summary of the target audit transaction.
The device according to claim 23 or 24, the audit blockchain includes a target audit transaction, wherein the target audit transaction includes the target revised business data, and the node device of the audit blockchain is based on The held private key is at least the digital signature of the target revised business data;

The audit certification includes an audit certification certificate generated by a designated user of the audit blockchain for one or more of the target revised business data, the target audit transaction, or the summary of the target audit transaction; The identifier of the audit certification certificate is the number of the audit certification certificate.
The device according to claim 23, wherein the audit blockchain is a consortium chain.
The device according to claim 23, wherein the service data includes traceability data; and the service data query request includes a service data traceability request.
A computer device, comprising: a memory and a processor; the memory stores a computer program that can be run by the processor; when the processor runs the computer program, it executes as described in any one of claims 1 to 7 The method described.
A computer device, comprising: a memory and a processor; the memory stores a computer program that can be run by the processor; when the processor runs the computer program, it executes as described in any one of claims 8 to 15 The method described.