CN111724165A - Transaction evidence storage method and device based on block chain, electronic equipment and medium - Google Patents
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Abstract
The present disclosure provides a block chain-based transaction evidence storing method, which is applied to a first decentralized application terminal, and the method includes: responding to the transaction between the first decentralized application end and the second decentralized application end, acquiring and storing transaction data corresponding to the transaction, responding to the condition that the first decentralized application end is connected to the block chain, and sending the transaction data to the block chain so that the block chain can store the transaction data. The present disclosure also provides a transaction evidence storing method based on a block chain, which is applied to the block chain, and the method includes: the method comprises the steps of receiving transaction data from a first decentralized application terminal, storing certificates of the transaction data, and sending certificate storing information related to the transaction data to the first decentralized application terminal.
Description
Technical Field
The present disclosure relates to the field of computer technologies, and in particular, to a method and an apparatus for transaction evidence storage based on a blockchain, an electronic device, and a computer-readable medium.
Background
The block chain is a distributed account book technology and has the characteristics of decentralization, no tampering, traceability and the like. Current public chain products, such as bitcoin or ether house, use block storage and encryption tagging to ensure that public chain based Decentralized Application (DApp) ends cannot double spend on digital assets within themselves.
However, in the course of implementing the inventive concept, the inventors found that at least the following problems existed in the related art: when DApp is used based on the federation chain technology, digital assets issued by the federation chain will be circulated between potentially off-network DApp terminals, and the digital assets circulated between the DApp terminals are at risk of being illegally copied.
Disclosure of Invention
In view of the above, in order to solve the problem that after the digital assets are exported from the DApp, the digital assets in the DApp may be copied and reused due to artificial data recovery, the present disclosure provides a block chain-based transaction evidence-saving method, apparatus, electronic device, and computer-readable medium.
One aspect of the present disclosure provides a transaction evidence storing method based on a blockchain, which is applied to a first decentralized application terminal, and the method includes: responding to the transaction between the first decentralized application end and the second decentralized application end, acquiring and storing transaction data corresponding to the transaction, responding to the condition that the first decentralized application end is connected to the block chain, and sending the transaction data to the block chain so that the block chain can store the transaction data.
Another aspect of the present disclosure provides a blockchain-based transaction evidence storing method, applied to a blockchain, the method including: the method comprises the steps of receiving transaction data from a first decentralized application terminal, storing certificates of the transaction data, and sending certificate storing information related to the transaction data to the first decentralized application terminal.
Another aspect of the present disclosure provides a transaction evidence storing device based on a blockchain, which is applied to a first decentralized application terminal, and the device includes a first obtaining module and a first sending module. The first acquisition module is used for responding to the transaction between the first decentralized application end and the second decentralized application end and acquiring and storing transaction data corresponding to the transaction. The first sending module is used for responding to the condition that the first decentralized application end is connected to the block chain, and sending the transaction data to the block chain so that the block chain can store the transaction data.
Another aspect of the present disclosure provides a transaction evidence storing device based on a blockchain, which is applied to the blockchain, and includes a receiving module, an evidence storing module, and a second sending module. The receiving module is used for receiving transaction data from the first decentralized application terminal. And the evidence storage module is used for storing the transaction data. And the second sending module is used for sending the evidence storage information about the transaction data to the first decentralized application terminal.
Another aspect of the present disclosure provides an electronic device including: one or more processors, a memory to store one or more programs, wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method as described above.
Another aspect of the disclosure provides a computer-readable storage medium having stored thereon executable instructions that, when executed by a processor, cause the processor to implement the method as described above.
Another aspect of the disclosure provides a computer program comprising computer executable instructions for implementing the method as described above when executed.
The decentralized application terminal of the embodiment of the disclosure can respond to transactions with other decentralized application terminals, acquire and store transaction data corresponding to the transaction, and respond to connection to the block chain and send the transaction data to the block chain. After the block link receives the transaction data from the decentralized application end, the transaction data can be stored, and the certificate storage information about the transaction data is sent to the decentralized application end to inform the decentralized application end that the transaction data is stored. The transaction evidence storing method provided by the embodiment of the disclosure can realize the evidence storing of the transaction data by both transaction parties and three parties in the alliance chain, so as to ensure that the transaction data generated by the decentralized application end 120 is credible, traceable and difficult to tamper.
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The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments of the present disclosure with reference to the accompanying drawings, in which:
FIG. 1 schematically illustrates an exemplary application scenario in which a transaction credentialing method may be applied in accordance with an embodiment of the present disclosure;
fig. 2 schematically illustrates a flow chart of a blockchain-based transaction credentialing method applied to a decentralized application terminal according to an embodiment of the present disclosure;
FIG. 3 schematically illustrates a schematic diagram of transaction data interchange, according to an embodiment of the present disclosure;
FIG. 4 schematically illustrates a flow chart of a blockchain-based transaction credentialing method applied to a blockchain in accordance with an embodiment of the present disclosure;
fig. 5 schematically illustrates a block diagram of a blockchain-based transaction credentialing apparatus applied to a decentralized application terminal according to an embodiment of the present disclosure;
fig. 6 schematically illustrates a block diagram of a blockchain-based transaction credentialing apparatus applied to a blockchain in accordance with an embodiment of the present disclosure; and
FIG. 7 schematically illustrates a block diagram of an electronic device suitable for implementing a business transaction method in accordance with an embodiment of the disclosure.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.). Where a convention analogous to "A, B or at least one of C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B or C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).
The embodiment of the disclosure provides a transaction evidence storing method and device based on a block chain, which are applied to a first decentralized application terminal. The method comprises the following steps: and responding to the transaction between the first decentralized application terminal and the second decentralized application terminal, and acquiring and storing transaction data corresponding to the transaction. And in response to the first decentralized application terminal being connected to the blockchain, sending the transaction data to the blockchain so that the blockchain can deposit the transaction data.
The embodiment of the disclosure also provides a transaction evidence storing method and device based on the block chain, which are applied to the block chain. The method comprises the following steps: the method comprises the steps of receiving transaction data from a first decentralized application terminal, storing a certificate of the transaction data, and sending certificate storing information related to the transaction data to the first decentralized application terminal.
Fig. 1 schematically illustrates an exemplary application scenario 100 in which a transaction credentialing method may be applied in accordance with an embodiment of the present disclosure.
It should be noted that fig. 1 is only an example of an application scenario in which the transaction evidence storing method of the embodiment of the present disclosure may be applied to help those skilled in the art understand the technical content of the present disclosure, but does not mean that the embodiment of the present disclosure may not be applied to other devices, systems, environments or scenarios.
As shown in fig. 1, an application scenario 100 of an embodiment of the present disclosure may include a federation chain end 110 and a plurality of decentralized application ends (DApp ends) 120.
According to an embodiment of the present disclosure, the decentralized application 120 may be, for example, various electronic devices having a display screen and supporting network connectivity, including but not limited to smart phones, tablet computers, laptop portable computers, desktop computers, and the like. The decentralized application 120 may have installed therein, for example, a client application based on the federation chain 110, which may be, for example, a decentralized application based on the federation chain 110.
In the disclosed embodiment, the federation chain 110 can act as an issuer of digital assets for issuing value. Decentralized application 120 may act as a node for delivering value. For example, digital assets are published on the federation chain 110 and then forwarded to the decentralized applications 120, and each decentralized application 120 may use the digital assets published by the federation chain 110 as a medium for transactions during the course of transactions so that the digital assets can be circulated between each decentralized application 120.
However, after the decentralized application 120 exports the digital assets, the data may be artificially recovered, so that the digital assets in the decentralized application 120 are duplicated and reused.
In view of this, the embodiment of the present disclosure provides a transaction evidence storing method. The decentralized application 120 may obtain and store transaction data corresponding to the transaction in response to conducting transactions with other decentralized applications, and send the transaction data to the federation chain 110 in response to connecting to the federation chain 110. After the federation chain 110 receives the transaction data from the decentralized application 120, it can store the transaction data, and send the storage information about the transaction data to the decentralized application 110, so as to inform the decentralized application 110 that the transaction data has been stored. The transaction evidence storing method provided by the embodiment of the disclosure can realize the evidence storing of the transaction data by both transaction parties and three parties in the alliance chain, so as to ensure that the transaction data generated by the decentralized application end 120 is credible, traceable and difficult to tamper.
It should be noted that the transaction evidence storing method applied to the decentralized application terminal provided by the embodiment of the present disclosure may be generally executed by the decentralized application terminal 120. Accordingly, the transaction evidence storing device applied to the decentralized application terminal provided by the embodiment of the present disclosure may be generally disposed in the decentralized application terminal 120. The transaction evidence-saving method applied to the decentralized application terminal provided by the embodiment of the present disclosure may also be executed by a server or a server cluster different from the decentralized application terminal 120 and capable of communicating with the decentralized application terminal 120 and/or the federation chain 110. Accordingly, the transaction evidence storing device applied to the decentralized application terminal provided by the embodiment of the present disclosure may also be disposed in a server or a server cluster different from the decentralized application terminal 120 and capable of communicating with the decentralized application terminal 120 and/or the federation chain 110.
The transaction credentialing method applied to the blockchain provided by the embodiments of the present disclosure can be generally performed by the federation chain 110. Accordingly, the transaction evidence keeping device applied to the blockchain provided by the embodiment of the present disclosure may be generally disposed in the federation chain 110. The transaction credentialing method applied to the blockchain provided by the embodiment of the present disclosure can also be executed by a server or a server cluster which is different from the federation chain 110 and can communicate with the decentralized application 120 and/or the federation chain 110. Accordingly, the transaction evidence storing device applied to the blockchain provided by the embodiment of the present disclosure may also be disposed in a server or a server cluster different from the federation chain 110 and capable of communicating with the decentralized application 120 and/or the federation chain 110.
It should be understood that the number of decentralized application and federation chains in FIG. 1 is merely illustrative. There may be any number of decentralized applications and federation chains, as desired for the implementation.
Fig. 2 schematically shows a flowchart of a blockchain-based transaction credentialing method applied to a decentralized application terminal according to an embodiment of the present disclosure.
As shown in fig. 2, the method includes operations S201 to S202.
In operation S201, in response to the first decentralized application performing a transaction with the second decentralized application, transaction data corresponding to the transaction is acquired and stored.
According to embodiments of the present disclosure, a decentralized application may be, for example, various electronic devices having a display screen and supporting network connectivity, including but not limited to smart phones, tablet computers, laptop portable computers, desktop computers, and the like. For example, a client application based on a block chain may be installed in the decentralized application terminal, and the client application may be, for example, a decentralized application based on a block chain. For example, the user may download a client application of the DApp using the terminal device and complete the registration.
In the disclosed embodiment, the decentralized application end can implement offline transactions. For example, a decentralized application may implement transactions with other decentralized applications while disconnected from the blockchain. Namely, transaction communication independent of the block chain can be realized between decentralized application terminals.
According to an embodiment of the present disclosure, the first decentralized application may, for example, perform a transaction with the second decentralized application, where the transaction may generate transaction data. For example, a first decentralized application may conduct a digital asset transaction with a second decentralized application, and the generated transaction data may include, for example, a transaction time, a transaction amount, an account balance of the first decentralized application, an account balance of the second decentralized application, and the like of the transaction. It is understood that the embodiments of the present disclosure do not limit the content of the transaction data, and those skilled in the art can set the transaction data according to actual needs.
In the embodiment of the present disclosure, after the first decentralized application terminal and the second decentralized application terminal complete the transaction, the generated transaction data is the transaction data that both parties of the transaction agree with each other. The first decentralized application terminal and the second decentralized application terminal can both acquire and store the transaction data to be used as a certificate of the transaction.
According to the embodiment of the disclosure, the transaction between the first decentralized application terminal and the second decentralized application terminal is independent from the block chain. For example, a first decentralized application and a second decentralized application may communicate with each other in a blockchain-independent transaction. For example, the first decentralized application and/or the second decentralized application may conduct transactions while disconnected from the blockchain.
In operation S202, in response to the first decentralized application being connected to the blockchain, the transaction data is sent to the blockchain so that the blockchain verifies the transaction data.
According to the embodiment of the disclosure, when each decentralized application terminal is connected to the blockchain, the transaction data stored in the decentralized application terminal and not stored in the decentralized application terminal can be sent to the blockchain. For example, each decentralized application may respond to its own connection to the blockchain, receive the credentialing information from the blockchain, determine non-credentialed transaction data in its own stored transaction data based on the credentialing information, and send the non-credentialed transaction data to the blockchain, so that the blockchain credentials the non-credentialed transaction data.
In an embodiment of the present disclosure, each decentralized application may store transaction data related to itself. For example, when a transaction is performed between the first decentralized application and the second decentralized application, the first decentralized application and the second decentralized application may both store transaction data of the transaction. The decentralized application terminal, which is connected to the blockchain first, of the first decentralized application terminal and the second decentralized application terminal may first send the transaction data to the blockchain, so that the blockchain can store the transaction data.
According to the embodiment of the disclosure, after the block chain stores the transaction data, the block chain can generate the verified storage information and send the verified storage information to each decentralized application end related to the transaction data, so that each decentralized application end is prevented from repeatedly uploading the same transaction data.
According to the embodiment of the disclosure, when the decentralized application terminal is connected to the blockchain, the certification information from the blockchain may be received, and the certification information may include, for example, identification information of certified transaction data.
In the embodiment of the present disclosure, the transaction data stored in each decentralized application may have a deposit certificate identifier. For example, 0 indicates no evidence and 1 indicates a confirmed evidence. Each decentralized application may determine whether each transaction datum has been credited based on the credentialing identification.
According to the embodiment of the disclosure, after receiving the evidence storing information from the block chain, the decentralized application terminal can change the evidence storing identification of the corresponding transaction data into the already-approved one based on the evidence storing information.
For example, a first decentralized application and a second decentralized application perform a transaction, resulting in transaction data. When the first decentralized application terminal is connected to the blockchain, if the evidence information about the transaction data is not received, it can be shown that the second decentralized application terminal has not uploaded the transaction data, and the first decentralized application terminal can upload the transaction data. If receiving the evidence storing information about the transaction data, the first decentralized application end can modify the evidence storing identification of the transaction data into the approved transaction data based on the received evidence storing information without uploading the transaction data.
In the embodiment of the present disclosure, in order to accelerate the uploading of the transaction data of each decentralized application terminal, the transaction data stored by the second decentralized application terminal and not stored with the certificate may be acquired and stored in response to the transaction between the first decentralized application terminal and the second decentralized application terminal. For example, after the first decentralized application terminal and the second decentralized application terminal complete the transaction, the transaction data which are not stored in the first decentralized application terminal and the second decentralized application terminal can be mutually transmitted.
For example, fig. 3 schematically illustrates a schematic diagram of transaction data interchange according to an embodiment of the present disclosure. As shown in FIG. 3, A, B, C are each decentralized application terminals. After the decentralized application terminal B and the decentralized application terminal C perform a transaction, the decentralized application terminal B and the decentralized application terminal C can acquire and store the transaction data of the other party without the deposit certificate. For example, the decentralized application B may obtain the transaction data that is not stored in the decentralized application C (e.g., the transaction data between the decentralized application C and the decentralized application D). When the decentralized application terminal A and the decentralized application terminal B carry out transaction, the decentralized application terminal A and the decentralized application terminal B can also acquire and store the transaction data of the other party without storage certificate. For example, at this time, the uncancelled transaction data between the uncancelled application C and the uncancelled application D is stored in the uncancelled application a. If the decentralized application a is connected to the alliance chain first, the decentralized application a may upload the stored non-certified transaction data related to itself and the non-certified transaction data related to other applications to the alliance chain together. Thus, although the decentralized application terminal B and the decentralized application terminal C are not connected to the alliance chain, the stored transaction data which is not stored in the decentralized application terminal B is uploaded to the alliance chain through the decentralized application terminal a, and when the decentralized application terminal B and the decentralized application terminal C are connected to the alliance chain again, the certificate storage information from the alliance chain can be directly received. It can be seen that, during the transaction process, there may be a case that some decentralized application end has not been connected to the federation chain, but the transaction data thereof is already stored in the federation chain.
According to the embodiment of the disclosure, in order to improve the storage efficiency and improve the data security, each decentralized application terminal may determine the transaction data already stored in the transaction data stored by itself in response to receiving the evidence storage information from the block chain, and delete the transaction data unrelated to itself in the already stored transaction data.
For example, continuing the above example, after the decentralized application a uploads the unverified transaction data between the decentralized application C and the decentralized application D stored therein to the federation chain, the federation chain may determine, based on the circulation path of the transaction data, each decentralized application (e.g., decentralized application a, decentralized application B, decentralized application C, and decentralized application D) storing the transaction data, and then send the evidence information about the transaction data to each decentralized application storing the transaction data. Each of the decentralized applications determines whether the certified transaction data is associated with itself (e.g., whether it is transaction data generated by itself transacting with other decentralized applications). If not, the transaction data may be deleted (e.g., the decentralized application a and decentralized application B may delete the transaction data). Otherwise, the transaction data may continue to be stored (e.g., the decentralized application C and decentralized application D may continue to store the transaction data).
According to an embodiment of the present disclosure, the blockchain may be, for example, a federation chain, and each decentralized application may be, for example, a decentralized application based on the federation chain. For example, a federation chain may be used to publish digital assets, and transactions between decentralized applications may be based on the digital assets published by the federation chain.
In the embodiment of the present disclosure, if the uncancelled transaction data still exists in a certain decentralized application end after a plurality of transactions, at this time, if the decentralized application end is damaged, the data in the decentralized application end is completely lost, then two situations exist: 1) although the internal part of the node has transaction data which is not uploaded by the node, the other nodes are used for uploading the deposit certificate, and after the node is reloaded, the transaction data which is finally deposited with the deposit certificate and all previous transaction records can be recovered from the alliance chain; 2) if the transaction data which is not stored exists in the node, and the transaction data which is not stored cannot be uploaded by other nodes, the transaction data is issued to the node at the moment, the data resource reserved in the node is lost, and the record displayed in the alliance chain is as follows: these data resources are left in the original node forever, and are lost to the DApp service network, losing the value of continuing the transaction.
The embodiment of the disclosure stores the transaction data in a consensus mode through the two transaction parties and the three alliance-link parties. Each decentralized application end is used as a direct participant of transaction, synchronous consensus is realized, and asynchronous consensus is realized between the decentralized application end and a alliance chain, so that multi-party consensus and data synchronization are realized. Therefore, under the condition that disputes exist among the decentralized application terminals, the transaction data stored in the alliance chain can be used as a third party certificate, so that the transaction data generated by the decentralized application terminals can be guaranteed to be credible, traceable and difficult to tamper.
Fig. 4 schematically illustrates a flow chart of a blockchain-based transaction credentialing method applied to a blockchain according to an embodiment of the present disclosure.
As shown in fig. 4, the method includes operations S401 to S403.
In operation S401, transaction data from a first decentralized application is received.
According to an embodiment of the present disclosure, the blockchain may receive, for example, uploaded transaction data from some decentralized application. For example, a first decentralized application may conduct a transaction with a second decentralized application, which may generate transaction data. For example, a first decentralized application may conduct a digital asset transaction with a second decentralized application, and the generated transaction data may include, for example, a transaction time, a transaction amount, an account balance of the first decentralized application, an account balance of the second decentralized application, and the like of the transaction. It is understood that the embodiments of the present disclosure do not limit the content of the transaction data, and those skilled in the art can set the transaction data according to actual needs.
In the embodiment of the present disclosure, after the first decentralized application terminal and the second decentralized application terminal complete the transaction, the generated transaction data is the transaction data that both parties of the transaction agree with each other. The first decentralized application terminal and the second decentralized application terminal can both acquire and store the transaction data to be used as a certificate of the transaction.
According to the embodiment of the disclosure, the transaction between the first decentralized application terminal and the second decentralized application terminal is independent from the block chain. For example, a first decentralized application and a second decentralized application can implement a block chain independent transaction communication, i.e., an offline transaction. For example, the first decentralized application and/or the second decentralized application may conduct transactions while disconnected from the blockchain.
According to the embodiment of the disclosure, when each decentralized application terminal is connected to the blockchain, the transaction data stored in the decentralized application terminal and not stored in the decentralized application terminal can be sent to the blockchain. For example, each decentralized application may respond to its own connection to the blockchain, receive the credentialing information from the blockchain, determine non-credentialed transaction data in its own stored transaction data based on the credentialing information, and send the non-credentialed transaction data to the blockchain, so that the blockchain credentials the non-credentialed transaction data.
In operation S402, the transaction data is credited.
In embodiments of the present disclosure, the blockchain may, for example, vouch for received transaction data. For example, the blockchain may first determine whether the received transaction data has been certified, and if not, the transaction data is certified, otherwise, the received transaction data may not need to be certified again.
According to the embodiment of the disclosure, the blockchain can verify the transaction data first, and then store the certificate after the verification is passed. For example, it is verified whether the signature of the transaction data is from the corresponding decentralized application. As another example, the accuracy of the transaction data may also be verified. As another example, the integrity of the transaction data may also be verified, and so forth.
In the disclosed embodiment, the credentialing may be, for example, storing the transaction data.
In operation S403, the deposit information about the transaction data is sent to the first decentralized application.
According to the embodiment of the disclosure, after the block chain finishes storing the certificate of the transaction data, the certificate storing information can be fed back to the decentralized application terminal sending the transaction data. The certification information may include, for example, identification information of certified transaction data.
In the embodiment of the present disclosure, the transaction data stored in each decentralized application may have a deposit certificate identifier. For example, 0 indicates no evidence and 1 indicates a confirmed evidence. Each decentralized application may determine whether each transaction datum has been credited based on the credentialing identification.
According to the embodiment of the disclosure, after receiving the evidence storing information from the block chain, the decentralized application terminal can change the evidence storing identification of the corresponding transaction data into the already-approved one based on the evidence storing information.
In the embodiment of the present disclosure, the certificate storing information may also be sent to each decentralized application terminal storing the transaction data. For example, a first decentralized application and a second decentralized application perform a transaction, resulting in transaction data. The first decentralized application end uploads the transaction data to the blockchain, and the blockchain can send the evidence storing information about the transaction data to the first decentralized application end and the second decentralized application end so as to inform the first decentralized application end that the transaction data has been successfully stored and inform the second decentralized application end that the transaction data has been successfully stored without uploading again.
According to the embodiment of the disclosure, in order to accelerate the uploading of the transaction data of each decentralized application terminal, the decentralized application terminals can mutually transmit the transaction data which are not stored with the certificate. Therefore, after the blockchain completes the deposit of certain transaction data, the blockchain can also send deposit information about the transaction data to each decentralized application terminal storing the transaction data. For example, a circulation path of the transaction data may be obtained, each decentralized application terminal storing the transaction data may be determined based on the circulation path, and the evidence storing information may be sent to each decentralized application terminal storing the transaction data. Therefore, each decentralized application end can be informed that the transaction data is certified, so that each decentralized application end can determine the certified transaction data in the transaction data stored by the decentralized application end in response to receiving the certification storing information from the block chain, delete the transaction data which is irrelevant to the decentralized application end in the certified transaction data, and improve the storage efficiency and the data safety.
According to an embodiment of the present disclosure, the blockchain may be, for example, a federation chain, and each decentralized application may be, for example, a decentralized application based on the federation chain. For example, a federation chain may be used to publish digital assets, and transactions between decentralized applications may be based on the digital assets published by the federation chain.
The embodiment of the disclosure stores the transaction data in a consensus mode through the two transaction parties and the three alliance-link parties. Each decentralized application end is used as a direct participant of transaction, synchronous consensus is realized, and asynchronous consensus is realized between the decentralized application end and a alliance chain, so that multi-party consensus and data synchronization are realized. Therefore, under the condition that disputes exist among the decentralized application terminals, the transaction data stored in the alliance chain can be used as a third party certificate, so that the transaction data generated by the decentralized application terminals can be guaranteed to be credible, traceable and difficult to tamper.
Fig. 5 schematically illustrates a block diagram of a blockchain-based transaction credentialing apparatus 500 applied to a decentralized application side according to an embodiment of the present disclosure.
As shown in fig. 5, the apparatus 500 may include a first obtaining module 510 and a first sending module 520.
The first obtaining module 510 is configured to, in response to a transaction between the first decentralized application and the second decentralized application, obtain and store transaction data corresponding to the transaction. According to the embodiment of the present disclosure, the first obtaining module 510 may, for example, perform operation S201 described above with reference to fig. 2, which is not described herein again.
The first sending module 520 is configured to send the transaction data to the blockchain in response to the first decentralized application being connected to the blockchain, so that the blockchain can store the transaction data. According to the embodiment of the present disclosure, the first sending module 520 may, for example, perform the operation S202 described above with reference to fig. 2, which is not described herein again.
According to an embodiment of the present disclosure, in response to the first decentralized application being connected to the blockchain, sending the transaction data to the blockchain includes: responding to the connection of the first decentralized application end to the block chain, receiving evidence storing information from the block chain, determining non-evidence storing transaction data in the transaction data stored by the first decentralized application end based on the evidence storing information, and sending the non-evidence storing transaction data to the block chain.
According to an embodiment of the present disclosure, the apparatus further comprises: and the second acquisition module is used for responding to the transaction between the first decentralized application end and the second decentralized application end and acquiring and storing the transaction data which are stored by the second decentralized application end and are not stored with the certificate.
According to an embodiment of the present disclosure, the apparatus further includes a determination module and a deletion module. The determining module is used for responding to the receipt of the evidence storing information from the block chain, and determining the transaction data which is already stored in the transaction data stored by the first decentralized application terminal. The deleting module is used for deleting the transaction data which is irrelevant to the first decentralized application end in the stored transaction data.
According to an embodiment of the present disclosure, the transaction between the first decentralized application and the second decentralized application is independent from the blockchain.
According to an embodiment of the present disclosure, the block chain includes a federation chain, and the first decentralized application terminal and the second decentralized application terminal each include a decentralized application terminal based on the federation chain.
According to an embodiment of the disclosure, the federation chain is configured to issue a digital asset, the first decentralized application and the second decentralized application conducting a transaction based on the digital asset.
According to an embodiment of the present disclosure, the apparatus 500 may, for example, perform the method described above with reference to fig. 2, which is not described herein again.
Any number of modules, sub-modules, units, sub-units, or at least part of the functionality of any number thereof according to embodiments of the present disclosure may be implemented in one module. Any one or more of the modules, sub-modules, units, and sub-units according to the embodiments of the present disclosure may be implemented by being split into a plurality of modules. Any one or more of the modules, sub-modules, units, sub-units according to embodiments of the present disclosure may be implemented at least in part as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented in any other reasonable manner of hardware or firmware by integrating or packaging a circuit, or in any one of or a suitable combination of software, hardware, and firmware implementations. Alternatively, one or more of the modules, sub-modules, units, sub-units according to embodiments of the disclosure may be at least partially implemented as a computer program module, which when executed may perform the corresponding functions.
For example, any plurality of the first obtaining module 510 and the first sending module 520 may be combined and implemented in one module/unit/sub-unit, or any one of the modules/units/sub-units may be split into a plurality of modules/units/sub-units. Alternatively, at least part of the functionality of one or more of these modules/units/sub-units may be combined with at least part of the functionality of other modules/units/sub-units and implemented in one module/unit/sub-unit. According to an embodiment of the present disclosure, at least one of the first obtaining module 510 and the first sending module 520 may be implemented at least partially as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented in hardware or firmware by any other reasonable manner of integrating or packaging a circuit, or may be implemented in any one of three implementations of software, hardware, and firmware, or in a suitable combination of any of them. Alternatively, at least one of the first obtaining module 510 and the first sending module 520 may be at least partially implemented as a computer program module, which when executed may perform the respective functions.
Fig. 6 schematically illustrates a block diagram of a blockchain-based transaction credentialing apparatus 600 applied to a blockchain according to an embodiment of the present disclosure.
As shown in fig. 6, the apparatus 600 may include a receiving module 610, a credentialing module 620 and a second sending module 630.
The receiving module 610 is configured to receive transaction data from a first decentralized application. According to the embodiment of the present disclosure, the receiving module 610 may, for example, perform operation S401 described above with reference to fig. 4, which is not described herein again.
The evidence storage module 620 is used for storing the transaction data. According to the embodiment of the present disclosure, the evidence storing module 620 may perform, for example, the operation S402 described above with reference to fig. 4, which is not described herein again.
The second sending module 630 is configured to send the deposit information about the transaction data to the first decentralized application. According to the embodiment of the present disclosure, the second sending module 630 may, for example, perform operation S403 described above with reference to fig. 4, which is not described herein again.
According to an embodiment of the present disclosure, the apparatus further comprises: and the third sending module is used for sending the evidence storing information to each decentralized application end which stores the transaction data.
According to the embodiment of the disclosure, sending the deposit evidence information to each decentralized application terminal storing the transaction data comprises: the method comprises the steps of obtaining a circulation path of the transaction data, determining each decentralized application end storing the transaction data based on the circulation path, and sending the evidence storage information to each decentralized application end storing the transaction data.
According to an embodiment of the present disclosure, the block chain includes a federation chain, and the first decentralized application terminal and the second decentralized application terminal each include a decentralized application terminal based on the federation chain.
According to an embodiment of the disclosure, the federation chain is configured to issue a digital asset, the first decentralized application and the second decentralized application conducting a transaction based on the digital asset.
According to an embodiment of the present disclosure, the apparatus 600 may, for example, perform the method described above with reference to fig. 4, which is not described herein again.
Any number of modules, sub-modules, units, sub-units, or at least part of the functionality of any number thereof according to embodiments of the present disclosure may be implemented in one module. Any one or more of the modules, sub-modules, units, and sub-units according to the embodiments of the present disclosure may be implemented by being split into a plurality of modules. Any one or more of the modules, sub-modules, units, sub-units according to embodiments of the present disclosure may be implemented at least in part as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented in any other reasonable manner of hardware or firmware by integrating or packaging a circuit, or in any one of or a suitable combination of software, hardware, and firmware implementations. Alternatively, one or more of the modules, sub-modules, units, sub-units according to embodiments of the disclosure may be at least partially implemented as a computer program module, which when executed may perform the corresponding functions.
For example, any plurality of the receiving module 610, the storing module 620 and the second sending module 630 may be combined and implemented in one module/unit/sub-unit, or any one of the modules/units/sub-units may be split into a plurality of modules/units/sub-units. Alternatively, at least part of the functionality of one or more of these modules/units/sub-units may be combined with at least part of the functionality of other modules/units/sub-units and implemented in one module/unit/sub-unit. According to an embodiment of the present disclosure, at least one of the receiving module 610, the credentialing module 620, and the second sending module 630 may be implemented at least partially as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented by hardware or firmware in any other reasonable manner of integrating or packaging a circuit, or may be implemented by any one of three implementations of software, hardware, and firmware, or any suitable combination of any of them. Alternatively, at least one of the receiving module 610, the credentialing module 620 and the second sending module 630 may be at least partially implemented as a computer program module, which when executed, may perform a corresponding function.
Fig. 7 schematically shows a block diagram of an electronic device adapted to implement the above described method according to an embodiment of the present disclosure. The electronic device shown in fig. 7 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 7, an electronic device 700 according to an embodiment of the present disclosure includes a processor 701, which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM)702 or a program loaded from a storage section 708 into a Random Access Memory (RAM) 703. The processor 701 may include, for example, a general purpose microprocessor (e.g., a CPU), an instruction set processor and/or associated chipset, and/or a special purpose microprocessor (e.g., an Application Specific Integrated Circuit (ASIC)), among others. The processor 701 may also include on-board memory for caching purposes. The processor 701 may comprise a single processing unit or a plurality of processing units for performing the different actions of the method flows according to embodiments of the present disclosure.
In the RAM 703, various programs and data necessary for the operation of the system 700 are stored. The processor 701, the ROM 702, and the RAM 703 are connected to each other by a bus 704. The processor 701 performs various operations of the method flows according to the embodiments of the present disclosure by executing programs in the ROM 702 and/or the RAM 703. It is noted that the programs may also be stored in one or more memories other than the ROM 702 and RAM 703. The processor 701 may also perform various operations of method flows according to embodiments of the present disclosure by executing programs stored in the one or more memories.
According to an embodiment of the present disclosure, the system 700 may also include an input/output (I/O) interface 705, the input/output (I/O) interface 705 also being connected to the bus 704. The system 700 may also include one or more of the following components connected to the I/O interface 705: an input portion 706 including a keyboard, a mouse, and the like; an output section 707 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 708 including a hard disk and the like; and a communication section 709 including a network interface card such as a LAN card, a modem, or the like. The communication section 709 performs communication processing via a network such as the internet. A drive 710 is also connected to the I/O interface 705 as needed. A removable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 710 as necessary, so that a computer program read out therefrom is mounted into the storage section 708 as necessary.
According to embodiments of the present disclosure, method flows according to embodiments of the present disclosure may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable storage medium, the computer program containing program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section 709, and/or installed from the removable medium 711. The computer program, when executed by the processor 701, performs the above-described functions defined in the system of the embodiment of the present disclosure. The systems, devices, apparatuses, modules, units, etc. described above may be implemented by computer program modules according to embodiments of the present disclosure.
The present disclosure also provides a computer-readable storage medium, which may be contained in the apparatus/device/system described in the above embodiments; or may exist separately and not be assembled into the device/apparatus/system. The computer-readable storage medium carries one or more programs which, when executed, implement the method according to an embodiment of the disclosure.
According to an embodiment of the present disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium. Examples may include, but are not limited to: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
For example, according to embodiments of the present disclosure, a computer-readable storage medium may include the ROM 702 and/or the RAM 703 and/or one or more memories other than the ROM 702 and the RAM 703 described above.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.
The embodiments of the present disclosure have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present disclosure, and such alternatives and modifications are intended to be within the scope of the present disclosure.
Claims (14)
1. A transaction evidence storing method based on a block chain is applied to a first decentralized application terminal, and the method comprises the following steps:
responding to the transaction between the first decentralized application end and the second decentralized application end, and acquiring and storing transaction data corresponding to the transaction; and
and responding to the connection of the first decentralized application end to the block chain, and sending the transaction data to the block chain so that the block chain can store the transaction data.
2. The method of claim 1, wherein transmitting the transaction data to the blockchain in response to the first decentralized application being connected to the blockchain comprises:
receiving credential information from the blockchain in response to the first decentralized application being connected to the blockchain;
determining transaction data which are not stored in a certificate in the transaction data stored by the first decentralized application terminal based on the certificate storage information; and
and sending the transaction data without the deposit certificate to the block chain.
3. The method of claim 1, further comprising:
and responding to the transaction between the first decentralized application end and the second decentralized application end, and acquiring and storing the transaction data which is stored by the second decentralized application end and is not stored with evidence.
4. The method of claim 3, further comprising:
in response to receiving the evidence storing information from the blockchain, determining the transaction data which is already stored in the transaction data stored by the first decentralized application terminal;
and deleting the transaction data which is irrelevant to the first decentralized application end in the transaction data which is stored with the certificate.
5. The method of claim 1, wherein conducting transactions between the first decentralized application and the second decentralized application is independent of the blockchain.
6. The method of claim 1, wherein the blockchain comprises a federation chain, and the first decentralized application and the second decentralized application each comprise decentralized applications based on the federation chain.
7. The method of claim 6, wherein the federation chain is used to issue a digital asset, the first decentralized application and the second decentralized application conducting transactions based on the digital asset.
8. A transaction evidence storing method based on a blockchain is applied to the blockchain, and the method comprises the following steps:
receiving transaction data from a first decentralized application;
storing the transaction data; and
and sending the evidence storage information about the transaction data to the first decentralized application terminal.
9. The method of claim 8, further comprising:
and sending the certificate storing information to each decentralized application terminal storing the transaction data.
10. The method of claim 9, wherein sending the credentialing information to each decentralized application storing the transaction data comprises:
acquiring a circulation path of the transaction data, and determining each decentralized application end storing the transaction data based on the circulation path; and
and sending the certificate storing information to each decentralized application terminal storing the transaction data.
11. A transaction evidence storage device based on a block chain is applied to a first decentralized application terminal, and the device comprises:
the first acquisition module is used for responding to the transaction between the first decentralized application end and the second decentralized application end and acquiring and storing transaction data corresponding to the transaction; and
and the first sending module is used for responding to the condition that the first decentralized application end is connected to the block chain, and sending the transaction data to the block chain so that the block chain can store the transaction data.
12. A transaction evidence storing device based on a blockchain is applied to the blockchain, and the device comprises:
the receiving module is used for receiving transaction data from the first decentralized application end;
the certificate storage module is used for storing the transaction data; and
and the second sending module is used for sending the evidence storage information about the transaction data to the first decentralized application terminal.
13. An electronic device, comprising:
one or more processors;
a storage device for storing one or more programs,
wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the method of any of claims 1-10.
14. A computer readable medium having stored thereon executable instructions which, when executed by a processor, cause the processor to perform the method of any one of claims 1 to 10.
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| CN113177851A (en) * | 2021-04-15 | 2021-07-27 | 国任财产保险股份有限公司 | Method and device for storing certificate of online insurance transaction, electronic equipment and storage medium |
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