CN112037057B - Correction method and device for block chain data - Google Patents
Correction method and device for block chain data Download PDFInfo
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Abstract
The present specification provides a method and an apparatus for correcting block chain data, including: node equipment of the data source block chain sends correction information aiming at the service number to the audit block chain in a cross-chain mode; the correction message comprises target correction business data obtained by data correction of the business data to be corrected, so that the audit block chain performs 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 block chain; receiving an identifier of the audit certificate sent by node equipment of the audit block chain in a chain crossing manner; and sending a target correction transaction to the data source block chain, so that the target correction service data, the abstract of the target transaction and the identifier of the audit certificate included in the target correction transaction are stored in the data source block chain.
Description
Technical Field
One or more embodiments of the present disclosure relate to the field of blockchain technologies, and in particular, to a method and an apparatus for correcting blockchain data.
Background
The block chain technology, also called distributed ledger technology, is an emerging technology in which several computing devices participate in "accounting" together, and a complete distributed database is maintained together. The blockchain technology has been widely used in many fields due to its characteristics of decentralization, transparency, participation of each computing device in database records, and rapid data synchronization between computing devices.
Disclosure of Invention
One or more embodiments of the present specification provide a method, an apparatus, and a computer device for correcting block chain data.
According to a first aspect of one or more embodiments of the present specification, a method for correcting block chain data is provided, which is applied to a node device in a data source block chain; the data source block chain is connected with an audit block chain in a cross-chain mode; the data source block chain records target transactions including service data to be corrected; the method comprises the following steps:
node equipment of the data source block chain sends correction information aiming at the service number to the audit block chain in a cross-chain mode; the correction message comprises target correction business data obtained by data correction of the business data to be corrected, so that the audit block chain performs 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 block chain;
receiving an identifier of the audit certificate sent by node equipment of the audit block chain in a chain crossing manner;
and sending a target correction transaction to the data source block chain, so that the target correction service data, the abstract of the target transaction and the identifier of the audit certificate included in the target correction transaction are stored in the data source block chain.
According to a second aspect of one or more embodiments of the present specification, a method for correcting blockchain data is provided, which is applied to a node device in an audit blockchain; the data source block chain is connected with an audit block chain in a cross-chain mode; the data source block chain records target transactions including service data to be corrected; the method comprises the following steps:
the node equipment of the audit block chain receives a correction message sent by the data source block chain in a cross-chain mode, wherein the correction message comprises target correction service data obtained by performing data correction on the service data to be corrected;
performing correction audit on the service data based on the target correction service data, and storing a generated audit certificate in the audit block chain after the audit is passed;
and sending the identifier of the audit certificate to the data source block chain in a cross-chain manner, so that the node equipment of the data source block chain sends a target correction transaction to the data source block chain, wherein the target correction transaction comprises the target correction service data, the abstract of the target transaction and the identifier of the audit certificate.
According to a third aspect of one or more embodiments of the present specification, there is provided a correction apparatus for blockchain data, which is applied to a node device in a data source blockchain; the data source block chain is connected with an audit block chain in a cross-chain mode; the data source block chain records target transactions including service data to be corrected; the device comprises:
the sending unit is used for sending a correction message aiming at the service number to the audit block chain in a cross-chain mode; the correction message comprises target correction business data obtained by data correction of the business data to be corrected, so that the audit block chain performs 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 block chain;
the receiving unit is used for receiving the identifier of the audit certificate sent by the node equipment of the audit block chain in a chain-crossing manner;
and the evidence storing unit is used for sending a target correction transaction to the data source block chain so as to store the target correction service data, the abstract of the target transaction and the identification of the audit certificate in the data source block chain, wherein the target correction service data, the abstract of the target transaction and the identification of the audit certificate are included in the target correction transaction.
According to a fourth aspect of one or more embodiments of the present specification, there is provided a correction apparatus for blockchain data, which is applied to a node device in an audit blockchain; the data source block chain is connected with an audit block chain in a cross-chain mode; the data source block chain records target transactions including service data to be corrected; the device comprises:
the receiving unit is used for receiving a correction message sent by the data source block chain in a cross-chain mode, wherein the correction message comprises target correction service data obtained by performing data correction on the service data to be corrected;
the auditing unit is used for performing correction auditing on the service data based on the target correction service data;
the certificate storing unit is used for storing the generated audit certificate in the audit block chain after the audit is passed;
and the sending unit sends the identifier of the audit certificate to the data source block chain in a cross-chain manner, so that the node equipment of the data source block chain sends a target correction transaction to the data source block chain, wherein the target correction transaction comprises the target correction service data, the abstract of the target transaction and the identifier of the audit certificate.
According to a fifth aspect of one or more embodiments of the present specification, there is provided a computer device comprising: a memory and a processor; the memory having stored thereon a computer program executable by the processor; when the processor runs the computer program, the correction method of the block chain data executed by the node device of the data source block chain is executed.
According to a sixth aspect of one or more embodiments of the present specification, there is provided a computer apparatus comprising: a memory and a processor; the memory having stored thereon a computer program executable by the processor; and when the processor runs the computer program, executing a correction method of the block chain data executed by the node equipment for auditing the block chain.
The block chain data correction method, device and computer equipment provided in each embodiment of the present specification utilize the audit block chain to audit correction service data obtained by correcting service data to be corrected stored in the data source block chain, and authenticate and verify the correction service data in the data source block chain in the audit block chain after the audit is passed, so that the data source block chain can store the correction service data that is audited by the audit block chain and an identifier of the audit verification, and a user can conveniently verify the credibility of the correction service data in the audit block chain.
Drawings
Fig. 1 is a flowchart illustrating a method for correcting blockchain data according to an exemplary embodiment;
FIG. 2 is a flowchart illustrating a data source block chain for a qualification request according to an exemplary embodiment;
fig. 3 is a schematic diagram of an apparatus for correcting blockchain data at a device side of a data source blockchain node according to an exemplary embodiment;
fig. 4 is a schematic diagram of a correction apparatus for auditing blockchain data at a blockchain node device end according to an exemplary embodiment;
fig. 5 is a hardware configuration diagram of an embodiment of a correction apparatus for performing blockchain data provided in the present specification.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with one or more embodiments of the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of one or more embodiments of the specification, as detailed in the claims which follow.
It should be noted that: in other embodiments, the steps of the corresponding methods are not necessarily performed in the order shown and described herein. In some other embodiments, the methods may include more or less steps than those described herein. Moreover, a single step described in this specification may be divided into multiple steps for description in other embodiments; however, in other embodiments, multiple steps described in this specification may be combined into a single step for description.
As the application services supported by the block chain become mature, the data stored in the block chain becomes richer and richer; based on a consensus mechanism of the block chain, the block chain can be used for realizing that data information cannot be tampered once being uploaded; however, in practical applications, a scene to be corrected may exist due to system problems or human errors, which may cause errors in information data uploaded to the block chain.
In view of the above problems, one or more embodiments of the present specification provide a method for correcting block chain data, which is used for correcting service data on a data source block chain; and the data source block chain is connected with the audit block chain in a cross-chain mode.
The block chain or block chain network described in one or more embodiments of the present specification may specifically refer to a P2P network system having a distributed data storage structure, where each node device achieves through a common recognition mechanism, the book data in the block chain is distributed within temporally consecutive "blocks", and the latter block may include a data digest of the former block, and according to a difference of a specific common recognition mechanism (such as POW, POS, DPOS, PBFT, or the like), a full backup of data of all or part of nodes is achieved.
As is well known to those skilled in the art, since the blockchain network system operates under a corresponding consensus mechanism, data that has been recorded in the blockchain database is difficult to be tampered with by any node, for example, a blockchain with Pow consensus is adopted, and it is possible to tamper with existing data only by an attack that requires at least 51% of effort over the entire network, so the blockchain system has characteristics of ensuring data security and preventing tampering against attacks, which are incomparable with other centralized database systems.
The real data generated by the physical world can be constructed into a standard transaction (transaction) format supported by a block chain, then is issued to the block chain, the node equipment in the block chain performs consensus processing on the received transaction, and after the consensus is achieved, the node equipment serving as an accounting node in the block chain packs the transaction into a block and performs persistent evidence storage in the block chain.
Regardless of which consensus algorithm is adopted by the block chain, the accounting node can pack the received transaction to generate a latest block and send the generated latest block or a block header of the latest block to other node devices for consensus verification. If no problem is verified after other node equipment receives the latest block or the block header of the latest block, the latest block can be added to the tail of the original block chain, so that the accounting process of the block chain is completed. The transaction contained in the block may also be performed by other nodes in verifying the new block or block header sent by the accounting node.
Blockchains are generally divided into three types: public chain (Public Blockchain), Private chain (Private Blockchain) and alliance chain (Consortium Blockchain). Furthermore, there may be a combination of the above types, such as private chain + federation chain, federation chain + public chain, and so on.
Among them, the most decentralized is the public chain. The public chain is represented by bitcoin and ether house, and participants (also called nodes in the block chain) joining the public chain can read data records on the chain, participate in transactions, compete for accounting rights of new blocks, and the like. Moreover, each node can freely join or leave the network and perform related operations.
Private chains are the opposite, with the network's write rights controlled by an organization or organization and the data read rights specified by the organization. Briefly, a private chain may be a weakly centralized system with strict restrictions on nodes and a small number of nodes. This type of blockchain is more suitable for use within a particular establishment.
A federation chain is a block chain between a public chain and a private chain, and "partial decentralization" can be achieved. Each node in a federation chain typically has a physical organization or organization corresponding to it; the nodes are authorized to join the network and form a benefit-related alliance, and block chain operation is maintained together.
It is contemplated that the embodiments provided herein can be implemented in any suitable type of blockchain network.
In one or more embodiments provided in this specification, a data source block chain is a block chain storing information of various service data, and may provide relevant service support for a client user thereof, for example, information of production places, processes, logistics, sales areas, and the like of various commodities may be stored on the data source block chain, so as to provide a commodity tracing query service for the user. The audit block chain is a block chain comprising user nodes which can carry out correctness or validity audit on service data information stored in the data source block chain. In this specification, the cross-chain connection manner between the subscription blockchain and the data source blockchain is not particularly limited. For example, subscription blockchain blockchains may implement cross-chain interfacing through cross-chain relays.
The cross-link relay can be respectively connected with the block chains through the bridging interfaces, and the cross-link data synchronization among the block chains is completed based on the realized data carrying logic. The chain-crossing technology used for realizing the chain-crossing relay is not particularly limited in this specification; for example, in practical applications, a plurality of block chains can be connected by a chain-crossing mechanism such as side chain technology, notary technology, and the like. After a plurality of block chains are connected in a butt joint mode through cross-chain relays, data on other block chains can be read and authenticated between the block chains, and intelligent contracts deployed on other block chains can be called through the cross-chain relays.
The inter-link relay is used only for transferring data between a plurality of block chains, and does not need to store the transferred data persistently or maintain the data state of the transferred data. In practical applications, the inter-link relay may be configured in a device, a node, a platform, or the like other than the plurality of block chains to which the inter-link relay is connected, or may be configured in a node device of the plurality of block chains to which the inter-link relay is connected, and is not particularly limited in this specification.
In the embodiment illustrated in fig. 1, the data source block chain includes a target transaction including service data to be corrected. For example, the data source block chain stores the origin information transaction of a certain brand of milk powder, and due to misoperation of a transaction uploader, the transaction shows that the origin of the certain brand of milk powder is A, and actually, the origin of the certain brand of milk powder is B. And the node equipment of the data source block chain can apply for the audit block chain to finish correcting the milk powder producing area information.
Fig. 1 illustrates a method for correcting blockchain data performed based on data source blockchain and audit blockchain cross-chain interaction, including:
The target correction service data may include correction result information obtained by correcting the service data to be corrected, or description information of a process or a result of correcting the service data to be corrected. For example, for the target transaction with the origin a containing a certain brand of milk powder, the corresponding target correction business data may be: "producing area B" may be information such as "the producing area A is corrected to producing area B".
And 104, the node equipment of the audit block chain carries out correction audit on the service data based on the target correction service data, and stores the generated audit certificate in the audit block chain after the audit is passed.
And a node user or a mechanism (designated user) with an auditing authority for the service data on the data source block chain in the auditing block chain performs correction auditing on the service data based on the target correction service data. In yet another illustrated embodiment, the data source block chain may set a transaction obtaining authority for the audit block chain, and the correction message sent by the data source block chain further includes a digest (TxID) of the target transaction, so that the audit block chain may obtain the target transaction across the chain in the data source block chain based on the digest of the target transaction, and perform correction audit on the service data based on the target transaction and the target correction service data.
The auditing of the correction of the service data may include one or more of auditing whether the target transaction is included in the data source block chain, auditing whether a sender (transaction uploader) of the target transaction has the qualification of uploading the service data in the data source block chain, whether the service data to be corrected needs to be corrected, or whether the target correction service data is corrected correctly.
The specified user node which can perform auditing on the target correction service data in the auditing block chain is usually a user node which is preset in the auditing block chain and can perform auditing or authentication on the service data; according to different specific setting rules of the audit block chain, the designated user node may be a designated user node, may also be a plurality of designated user nodes, and may also be any node of the audit block chain, which is not limited in this embodiment.
An auditing user or a mechanism with auditing authority for the service data on the data source block chain in the auditing block chain can execute auditing for the target correction service data on the basis of a set auditing process (such as an intelligent contract) on the chain and obtain an auditing result; or, under the chain, based on the set auditing workflow software, auditing the target correction service data is executed, and an auditing result is submitted to an auditing block chain; and auditing the target correction service data can be manually performed on line, and an auditing result is submitted to an auditing block chain, and the like.
And when the audit result is that the audit is passed, the node equipment of the audit block chain can generate an audit certificate and store the audit certificate in the audit block chain.
Specifically, when the audit is finished and the audit result is passed, the specified user node of the audit block chain may send a target audit transaction for the target correction service data to the audit block chain, where the target audit transaction includes the target correction service data and a digital signature that is made by the specified user node of the audit block chain at least to the target correction service data based on a held private key.
In an illustrated embodiment, the audit trail includes the target audit transaction. And the appointed user of the audit block chain audits and passes the target correction service data and authenticates the target correction service data through the digital signature of the appointed user on the target correction service data. Correspondingly, the identity of the audit certificate is the digest (such as TxID) of the target audit transaction in the audit block chain.
In yet another illustrated embodiment, the specified user of the audit block chain may further generate an audit certification certificate for one or more of the target audit transaction, or the summary of the target audit transaction; the content of the audit certification certificate may include a number of the audit certification certificate, one or more of the target correction service data, the target audit transaction, or the digest of the target audit transaction, and a digital signature made by the designated user node on the one or more of the target correction service data, the target audit transaction, or the digest of the target audit transaction based on a held private key. The audit certificate comprises the audit certificate, and the identifier of the audit certificate is the number of the audit certificate.
In another embodiment, the node device of the audit block chain may further generate a target audit record transaction, where the target audit record transaction may include an audit process description of the target transaction and the target correction service data validity of the specified user of the audit block chain, and send the target audit record transaction to the audit block chain, so that the audit block chain may store the target transaction and the target correction service data validity audit process for the specified user.
And 106, the node equipment of the audit block chain sends the identifier of the audit certificate to the data source block chain in a cross-chain mode.
Therefore, the data source block chain finishes the correction of the service data to be corrected on the block chain, and correspondingly stores a correction object, namely (an identifier of) target transaction, (an identification of) target correction service data, a correction result, namely target correction service data, and (an identifier of) audit certification for the correction result, namely (the identifier of) audit certification, in the target correction transaction, so that a user of the data source block chain and a user of an application (such as a tracing application service) supported by the data source block chain can conveniently look up the target correction service data and verify the audit certification of the target correction service data, and the credibility of the target correction service data is improved based on the audit certification authority of the user of the audit block chain.
In a further illustrated embodiment, in response to a service data query request sent by a client accessing the data source block chain, sending target correction service data and an identifier of an audit certificate corresponding to the target correction service data to the client, so that the client queries the audit certificate from the audit block chain based on the identifier of the audit certificate and verifies whether the target correction service data has been audited by the audit block chain.
For example, when a client of a data source blockchain initiates a source tracing request of a certain brand of milk powder to a node device of the data source blockchain, the node device of the data source blockchain may send source tracing data including information of a production place, a logistics link, a sales area, and the like of the brand of milk powder to the client, and give label description information such as "production place is B, audit block chain has been audited, audit certificate number is 12345" to the production place information, so that a user can conveniently inquire the audit certificate in the audit blockchain based on the certificate number, thereby further verifying the credibility of the information of production place B.
In one or more of the above embodiments, the data source blockchain and the audit blockchain perform data correction on the data source blockchain based on the implemented cross-chain connection manner. Fig. 2 illustrates a process of making a qualification application from a data source blockchain to an audit blockchain before the data source blockchain and the audit blockchain are connected across chains.
In an illustrated embodiment, the audit block chain may be configured as a federation chain, and the federation member nodes may include authorities with higher credit such as a service management authority, an audit authority, and a supervision authority, so as to audit a qualification-making application submitted by the data source block chain, and establish a cross-chain connection configuration with the data source block chain after the audit is passed.
As shown in fig. 2, the process of the data source blockchain applying for the approval qualification authorization from the audit blockchain includes:
At the moment, the data source block chain and the audit block chain are not in a cross-chain connection relationship, and node equipment of the data source block chain sends a request for correcting qualification to the node equipment of the audit block chain in an off-chain connection mode. The qualification-correcting application may include information such as identity information of a node user of the data source block chain, a service data type, and a service application range supported by the data source block chain.
And 204, the node equipment of the audit block chain constructs a correction qualification application transaction based on the correction qualification application and sends the correction qualification application transaction to the audit block chain.
The approval qualification application transaction recorded by the audit block chain can be used for credentialing and filing for approval qualification application of the data source block chain.
And step 206, the node equipment of the audit block chain executes audit on the qualification booking application and sends an audit result to the audit block chain.
In another illustrated embodiment, an intelligent contract for auditing the qualified and corrected application is deployed on the audit block chain, and the contract code corresponding to the intelligent contract includes audit logic of the qualified and corrected application and calculation logic of an audit result; responding to the transaction of the correction qualification application, calling the intelligent contract, executing the verification of the correction qualification application based on the verification logic of the correction qualification application and the calculation logic of the verification result, and calculating to obtain the verification result.
The execution result of the intelligent contract can be collected in the account state corresponding to the intelligent contract, and the node equipment of the audit block chain can acquire the audit result by monitoring the state database of the audit block chain.
Step 208, the node device of the audit block chain sends the audit result to the node device of the data source block chain based on an off-chain channel; and when the auditing result is passed, performing chain crossing configuration on the data source block chain and the auditing block chain respectively to realize chain crossing connection.
Specifically, the chain-crossing configuration executed by each of the data source block chain and the audit block chain includes:
the data source blockchain performs cross-chain configuration to authorize the audit blockchain to access transactions embodied by the data source blockchain;
the data source block chain executes cross-chain message subscription configuration so that the audit block chain subscribes to correction messages sent by the data source block chain in a cross-chain mode;
and the audit block chain executes cross-chain message subscription configuration so as to enable the data source block chain to subscribe the identification of the audit certificate sent by the audit block chain in a cross-chain mode.
In step 104 shown in fig. 1, the audit block chain needs to cross-chain acquire a target transaction in the data source block chain, and the data source block chain needs to set a transaction acquisition authority for the audit block chain, so that the audit block chain can directly access a transaction included in the data source block chain ledger.
The audit block chain is a block chain comprising mechanism nodes with higher credit, such as a service management mechanism, an audit mechanism, a supervision mechanism and the like, and in order to ensure the data privacy security of the audit block chain, the direct access acquisition permission of the data source block chain to the transaction recorded by the audit block chain cannot be authorized; therefore, the audit block chain executes cross-chain message subscription configuration to enable the data source block chain to subscribe to the identifier of the audit certificate sent by the audit block chain in a cross-chain mode, so that the audit block chain actively pushes the identifier of the audit certificate to the data source block chain in a cross-chain mode; correspondingly, the data source block chain executes cross-chain message subscription configuration so that the audit block chain subscribes to correction messages sent by the data source block chain in a cross-chain mode, and therefore the data source block chain actively pushes the correction messages to the audit block chain in a cross-chain mode.
In the cross-chain message subscription configuration described in relation to the above embodiments, a subscriber blockchain subscribes to messages stored or generated on a message source blockchain. The method comprises the steps that a subscription contract is deployed on a message source block chain (a data source block chain or an audit block chain), node equipment of the message source block chain calls the subscription contract to obtain a message (an identification of a subscription message or an audit certificate) subscribed by a subscriber, and the message source block chain pushes the message obtained by executing the subscription contract to the subscriber block chain in a cross-chain mode, so that the message is transmitted from the message source block chain to the subscriber block chain in a subscription and push mode. Compared with the method that the subscriber block chain directly accesses and acquires the message from the message source block chain, the 'subscription + push' mode protects the data privacy of the message source block chain and improves the message notification efficiency.
Corresponding to the above flow implementation, the embodiments of the present specification further provide an apparatus 30 and 40 for correcting block chain data. The means 30 and 40 can be implemented by software, hardware or a combination of software and hardware. Taking a software implementation as an example, the logical device is formed by reading a corresponding computer program instruction into a memory for running through a Central Processing Unit (CPU) of the device. In terms of hardware, the device in which the apparatus is located generally includes other hardware such as a chip for transmitting and receiving wireless signals and/or other hardware such as a board for implementing a network communication function, in addition to the CPU, the memory, and the storage shown in fig. 5.
As shown in fig. 3, the present specification further provides a correction apparatus 30 for blockchain data, which is applied to a node device in a data source blockchain; the data source block chain is connected with an audit block chain in a cross-chain mode; the data source block chain records target transactions including service data to be corrected; the device 30 comprises:
a sending unit 302, configured to send a correction message for the service number to the audit block chain across a chain; the correction message comprises target correction business data obtained by data correction of the business data to be corrected, so that the audit block chain performs 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 block chain;
a receiving unit 304, configured to receive an identifier of the audit trail sent by a node device of the audit block chain across the chain;
and the evidence storing unit 306 is configured to send a target correction transaction to the data source block chain, so that the target correction service data, the summary of the target transaction, and the identifier of the audit certificate included in the target correction transaction are stored in the data source block chain.
In yet another illustrated embodiment, the correction message further includes a summary of the target transaction;
the audit block chain carries out correction audit on the service data based on the target correction service data, and the audit block chain comprises the following steps:
the auditing block chain acquires the target transaction in a cross-chain mode based on the abstract of the target transaction;
and performing correction audit on the service data based on the target transaction and the target correction service data.
In yet another illustrated embodiment, the performing a subscription audit on the service data includes one or more of the following:
auditing whether the target transaction is recorded in the data source block chain;
auditing whether a sender of the target transaction has the qualification of uploading the service data;
auditing whether the service data to be corrected needs to be corrected;
and auditing whether the target correction service data is correctly modified.
In a further illustrated embodiment, a target audit transaction is included in the audit block chain, where the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit trail comprises the target audit transaction; the identification of the audit trail is a summary of the target audit transaction.
In a further illustrated embodiment, a target audit transaction is included in the audit block chain, where the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit certificate comprises an audit certification certificate generated by one or more of the target correction service data, the target audit transaction or the abstract of the target audit transaction by a designated user of the audit block chain; the identification of the audit certificate is the number of the audit certificate.
In yet another illustrated embodiment, the sending unit 302 is further configured to:
responding to a service data query request sent by a client accessing the data source block chain, sending target correction service data and an identifier of an audit certificate corresponding to the target correction service data to the client, so that the client queries the audit certificate to the audit block chain based on the identifier of the audit certificate and verifies whether the target correction service data is audited and passed by the audit block chain.
In yet another illustrated embodiment, the business data includes traceability data; the service data query request comprises a service data source tracing request.
The implementation process of the function and the action of each unit in the apparatus 30 is specifically described in the implementation process of the corresponding step in the correction method of the block chain data executed by the node device of the data source block chain, and related points may be referred to part of the description of the method embodiment, which is not described herein again.
As shown in fig. 4, the present specification further provides a correction apparatus 40 for blockchain data, which is applied to audit node devices in a blockchain; the data source block chain is connected with an audit block chain in a cross-chain mode; the data source block chain records target transactions including service data to be corrected; the device 40 comprises:
a receiving unit 402, configured to receive a correction message sent by the data source block chain across a chain, where the correction message includes target correction service data obtained by performing data correction on the service data to be corrected;
an auditing unit 404, configured to perform correction auditing on the service data based on the target correction service data;
the evidence storing unit 406 is used for storing the generated audit evidence in the audit block chain after the audit is passed;
the sending unit 408 sends the identifier of the audit trail to the data source block chain in a cross-chain manner, so that the node device of the data source block chain sends a target correction transaction to the data source block chain, where the target correction transaction includes the target correction service data, the abstract of the target transaction, and the identifier of the audit trail.
In yet another illustrated embodiment, the correction message further includes a summary of the target transaction;
the auditing unit 404 is further configured to:
acquiring the target transaction in a cross-chain manner based on the abstract of the target transaction;
and performing correction audit on the service data based on the target transaction and the target correction service data.
In yet another illustrated embodiment, the auditing unit 404 is further configured to audit one or more of the following:
auditing whether the target transaction is recorded in the data source block chain;
auditing whether a sender of the target transaction has the qualification of uploading the service data;
auditing whether the service data to be corrected needs to be corrected;
and auditing whether the target correction service data is correctly modified.
In yet another illustrated embodiment, the evidence storing unit 406 is further configured to send the target audit docket transaction to the audit blockchain, so that the audit process description of the validity of the target transaction and the target correction service data by the specified user included in the target audit docket transaction is stored in the audit blockchain.
In a further illustrated embodiment, a target audit transaction is included in the audit block chain, where the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit trail comprises the target audit transaction; the identification of the audit trail is a summary of the target audit transaction.
In a further illustrated embodiment, a target audit transaction is included in the audit block chain, where the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit certificate comprises an audit certification certificate generated by one or more of the target correction service data, the target audit transaction or the abstract of the target audit transaction by a designated user of the audit block chain; the identification of the audit certificate is the number of the audit certificate.
In yet another illustrated embodiment, the chain of audit blocks is a federation chain.
In yet another illustrated embodiment, the business data includes traceability data; the service data query request comprises a service data source tracing request.
The implementation process of the function and the action of each unit in the apparatus 40 is specifically described in the implementation process of the corresponding step in the correction method of the block chain data executed by the node device of the audit block chain, and related points may be referred to part of the description of the method embodiment, which is not described herein again.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical modules, may be located in one place, or may be distributed on a plurality of 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 the specification. One of ordinary skill in the art can understand and implement it without inventive effort.
The apparatuses, units and modules described in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.
Corresponding to the above method embodiments, embodiments of the present specification also provide a computer device, as shown in fig. 5, including a memory and a processor. Wherein the memory has stored thereon a computer program executable by the processor; the processor executes the steps of the block chain data correction method executed by the node device of the data source block chain in the embodiment of the present specification when running the stored computer program. For a detailed description of each step of the correction method of the block chain data executed by the node device of the data source block chain, please refer to the previous content, and it is not repeated.
Corresponding to the above method embodiments, embodiments of the present specification also provide a computer device, as shown in fig. 5, including a memory and a processor. Wherein the memory has stored thereon a computer program executable by the processor; the processor, when executing the stored computer program, performs the steps of the method for correcting blockchain data performed by the node device that audits blockchains in the embodiments of the present specification. For a detailed description of each step of the correction method for blockchain data executed by the node device that audits the blockchain, please refer to the previous contents, which is not repeated.
The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and is not to be construed as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure are intended to be included within the scope of the present disclosure.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, 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 a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, 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, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present description may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
Claims (24)
1. A correction method of block chain data is applied to node equipment in a data source block chain; the data source block chain is connected with an audit block chain in a cross-chain mode; the data source block chain records target transactions including service data to be corrected; the method comprises the following steps:
node equipment of the data source block chain sends correction information aiming at the service data to the audit block chain in a cross-chain mode; the correction message comprises target correction service data obtained by performing data correction on the service data to be corrected;
receiving an identifier of an audit certificate sent by node equipment of the audit block chain in a cross-chain mode when the service data is subjected to correction audit;
and issuing the target correction service data, the abstract of the target transaction and the identifier of the audit certificate to the data source block chain for evidence storage.
2. The method of claim 1, the positive audit of the traffic data comprising one or more of:
auditing whether the target transaction is recorded in the data source block chain;
auditing whether a sender of the target transaction has the qualification of uploading the service data;
auditing whether the service data to be corrected needs to be corrected;
and auditing whether the target correction service data is correctly modified.
3. The method of claim 1 or 2, wherein the audit block chain includes a target audit transaction, wherein the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit trail comprises the target audit transaction; the identification of the audit trail is a summary of the target audit transaction.
4. The method of claim 1 or 2, wherein the audit block chain includes a target audit transaction, wherein the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit certificate comprises an audit certification certificate generated by one or more of the target correction service data, the target audit transaction or the abstract of the target audit transaction by a designated user of the audit block chain; and the identifier of the audit certificate is the number of the audit certificate.
5. The method of claim 1, further comprising:
responding to a service data query request sent by a client accessing the data source block chain, sending target correction service data and an identifier of an audit certificate corresponding to the target correction service data to the client, so that the client queries the audit certificate to the audit block chain based on the identifier of the audit certificate and verifies whether the target correction service data is audited and passed by the audit block chain.
6. The method of claim 5, the traffic data comprising source-tracing data; the service data query request comprises a service data source tracing request.
7. A correction method of block chain data is applied to node equipment in an audit block chain; the data source block chain is connected with the audit block chain in a cross-chain mode; the data source block chain stores service data to be corrected; the method comprises the following steps:
the node equipment of the audit block chain receives a correction message sent by the data source block chain in a cross-chain mode, wherein the correction message comprises target correction service data obtained by performing data correction on the service data to be corrected;
performing correction audit on the service data based on the target correction service data, and storing a generated audit certificate in the audit block chain after the audit is passed;
and sending the identification of the audit certification to the data source block chain in a cross-chain mode.
8. The method of claim 7, the subscription auditing of the traffic data comprising one or more of:
auditing whether the target transaction is recorded in the data source block chain;
auditing whether a sender of the target transaction has the qualification of uploading the service data;
auditing whether the service data to be corrected needs to be corrected;
and auditing whether the target correction service data is correctly modified.
9. The method of claim 7 or 8, wherein the audit block chain includes a target audit transaction, wherein the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit trail comprises the target audit transaction; the identification of the audit trail is a summary of the target audit transaction.
10. The method of claim 7 or 8, wherein the audit block chain includes a target audit transaction, wherein the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit certificate comprises an audit certification certificate generated by one or more of the target correction service data, the target audit transaction or the abstract of the target audit transaction by a designated user of the audit block chain; and the identifier of the audit certificate is the number of the audit certificate.
11. The method of claim 7, the traffic data comprising traceability data.
12. A correction device of block chain data is applied to node equipment in a data source block chain; the data source block chain is connected with an audit block chain in a cross-chain mode; the data source block chain records target transactions including service data to be corrected; the device comprises:
the sending unit is used for sending a correction message aiming at the service data to the audit block chain in a cross-chain mode; the correction message comprises target correction service data obtained by performing data correction on the service data to be corrected;
the receiving unit is used for receiving the identifier of the audit certification sent by the node equipment of the audit block chain in a cross-chain mode when the service data is subjected to correction audit;
and the evidence storing unit is used for issuing the target correction service data, the abstract of the target transaction and the identification of the audit certificate to the data source block chain for evidence storage.
13. The apparatus of claim 12, the subscription audit of the traffic data comprising one or more of:
auditing whether the target transaction is recorded in the data source block chain;
auditing whether a sender of the target transaction has the qualification of uploading the service data;
auditing whether the service data to be corrected needs to be corrected;
and auditing whether the target correction service data is correctly modified.
14. The apparatus according to claim 12 or 13, wherein a target audit transaction is included in the audit block chain, wherein the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit trail comprises the target audit transaction; the identification of the audit trail is a summary of the target audit transaction.
15. The apparatus according to claim 12 or 13, wherein a target audit transaction is included in the audit block chain, wherein the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit certificate comprises an audit certification certificate generated by one or more of the target correction service data, the target audit transaction or the abstract of the target audit transaction by a designated user of the audit block chain; and the identifier of the audit certificate is the number of the audit certificate.
16. The apparatus of claim 12, the sending unit further configured to:
responding to a service data query request sent by a client accessing the data source block chain, sending target correction service data and an identifier of an audit certificate corresponding to the target correction service data to the client, so that the client queries the audit certificate to the audit block chain based on the identifier of the audit certificate and verifies whether the target correction service data is audited and passed by the audit block chain.
17. The apparatus of claim 16, the traffic data comprising source-tracing data; the service data query request comprises a service data source tracing request.
18. A correction device of block chain data is applied to node equipment in an audit block chain; the data source block chain is connected with the audit block chain in a cross-chain mode; the data source block chain stores service data to be corrected; the device comprises:
the receiving unit is used for receiving a correction message sent by the data source block chain in a cross-chain mode, wherein the correction message comprises target correction service data obtained by performing data correction on the service data to be corrected;
the auditing unit is used for performing correction auditing on the service data based on the target correction service data;
the certificate storing unit is used for storing the generated audit certificate in the audit block chain after the audit is passed;
and the sending unit sends the identifier of the audit certificate to the data source block chain in a cross-chain mode.
19. The apparatus of claim 18, the auditing unit further to audit one or more of the following:
auditing whether the target transaction is recorded in the data source block chain;
auditing whether a sender of the target transaction has the qualification of uploading the service data;
auditing whether the service data to be corrected needs to be corrected;
and auditing whether the target correction service data is correctly modified.
20. The apparatus according to claim 18 or 19, wherein a target audit transaction is included in the audit block chain, wherein the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit trail comprises the target audit transaction; the identification of the audit trail is a summary of the target audit transaction.
21. The apparatus according to claim 18 or 19, wherein a target audit transaction is included in the audit block chain, wherein the target audit transaction includes the target correction service data, and a node device of the audit block chain at least digitally signs the target correction service data based on a held private key;
the audit certificate comprises an audit certification certificate generated by one or more of the target correction service data, the target audit transaction or the abstract of the target audit transaction by a designated user of the audit block chain; and the identifier of the audit certificate is the number of the audit certificate.
22. The apparatus of claim 18, the traffic data comprising traceability data.
23. A computer device, comprising: a memory and a processor; the memory having stored thereon a computer program executable by the processor; the processor, when executing the computer program, performs the method of any of claims 1 to 6.
24. A computer device, comprising: a memory and a processor; the memory having stored thereon a computer program executable by the processor; the processor, when executing the computer program, performs the method of any of claims 7 to 11.
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| CN111783144A (en) * | 2020-08-20 | 2020-10-16 | 支付宝(杭州)信息技术有限公司 | Data processing method and device based on block chain |
| US11522726B1 (en) | 2021-06-29 | 2022-12-06 | Fmr Llc | Systems and methods for reading, storing, and correcting historical records in distributed ledgers |
| EP4145324A1 (en) * | 2021-09-02 | 2023-03-08 | Secjur GmbH | Method and system for securely processing certificate requests |
| CN114726548B (en) * | 2022-05-19 | 2022-11-11 | 国网数字科技控股有限公司 | Cross-chain-supported green electricity tracing method and system |
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| CN111192146A (en) | 2020-05-22 |
| CN112037057A (en) | 2020-12-04 |
| WO2021204044A1 (en) | 2021-10-14 |
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