CN111339550A - Comment information credibility method based on block chain technology - Google Patents
Comment information credibility method based on block chain technology Download PDFInfo
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- CN111339550A CN111339550A CN202010077876.1A CN202010077876A CN111339550A CN 111339550 A CN111339550 A CN 111339550A CN 202010077876 A CN202010077876 A CN 202010077876A CN 111339550 A CN111339550 A CN 111339550A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/01—Customer relationship services
- G06Q30/015—Providing customer assistance, e.g. assisting a customer within a business location or via helpdesk
- G06Q30/016—After-sales
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
- G06F21/6281—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database at program execution time, where the protection is within the operating system
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention discloses a comment information credibility method based on a block chain technology, which comprises the steps of constructing a public information channel and a platform information management channel which are independent from each other and are provided with a block chain in each public information channel; configuring member management service to enable users with different identities to subscribe and maintain different block chain channels; after actual consumption, a user commends a merchant on a platform, transaction data formed by comment content is submitted to each endorsement node through sequencing service of a consensus mechanism, each endorsement node verifies the comment authenticity, submits to a consensus service node after verification is passed, broadcasts to each peer node by the consensus service node, and after each peer node is confirmed, marks information of the comment into a corresponding block chain and stores the comment content into a server of the merchant platform. The invention achieves the purpose of credibility of the network comment information by applying the block chain technology, protects the privacy of consumers and has very high practical value and popularization value.
Description
Technical Field
The invention relates to a block chain application technology, in particular to a comment information credibility method based on the block chain technology.
Background
With the development of internet technology, more and more merchants such as restaurants, hotels and the like publish their service items to a network platform so as to be more conveniently displayed to consumers, and meanwhile, collect and summarize the evaluation of the consumers on the service items, so that the consumers can read comments in advance to make consumption judgment. In addition, the e-commerce shopping platform encourages consumers to give consumption feedback in the evaluation area, and influence and credit value are improved for the shops residing on the platform while convenience is brought to the consumers. However, it is well known that false, malicious ratings are spread over the comment area, with false good ratings deceiving consumers who use malicious ratings to extort the merchant. The frequent prohibition not only damages the online commercial environment and influences the benefits of the merchants, but also misleads the judgment of the consumers.
The block chain technology is essentially a decentralized database, and is a novel application mode of computer technologies such as distributed data storage, point-to-point transmission, a consensus mechanism, an encryption algorithm and the like. The blockchain technique is a completely new distributed infrastructure and computing paradigm that utilizes blockchain data structures to verify and store data, utilizes distributed node consensus algorithms to generate and update data, utilizes cryptographic methods to secure data transmission and access, and utilizes intelligent contracts composed of automated script code to program and manipulate data. The block chain technology has the characteristics of decentralization, no tampering, whole-course trace retention, traceability, collective maintenance, openness and transparency and the like, and how to combine the block chain technology with a merchant consumption platform to improve the credibility of the consumption comment information is an applicable aspect of the block chain technology.
Disclosure of Invention
Aiming at the technical problems, the invention provides a comment information credibility method based on a block chain technology, so as to ensure that the comment content of a business platform is real and effective and is not tampered.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a comment information credibility method based on a block chain technology comprises the following steps:
(S1) building a block chain network in the business platform, according to the characteristics of Hyperhedger Fabric, constructing a public information channel and a platform information management channel which are independent from each other and are provided with a block chain in the public information channel, wherein the public information channel is used for recording public information based on comment content, and the platform information management channel is used for recording platform management information; the nodes in the block chain network are divided into Peer nodes and consensus service nodes, the Peer nodes are responsible for submitting actual transaction calls and communicating with the consensus service nodes to request a task of broadcasting transaction, and meanwhile, the Peer nodes can be designated as endorsement nodes and are responsible for transaction endorsements;
(S2) configuring member management service, and distributing and subscribing registered users of a business platform to different channels according to different identities, wherein all users in the same channel are used as Peer nodes to jointly maintain the channel, consumer users and business users subscribe a public information channel, and comment management users subscribe the platform information management channel, wherein the comment management users are mainly used for maintaining daily affairs of the platform, including user behavior management, customer service, speech review and the like, and behavior logs of the comment management users are recorded in the platform information management channel;
(S3) the consumer node forms a transaction proposal with the comment content after the consumption behavior, the transaction proposal is submitted to a consensus service node after endorsement verification by the endorsement node, the consensus service node broadcasts the transaction information generated by the comment content to each Peer node in the same channel with the consumer node after blocking, writes the transaction information into a public information channel block chain, stores the comment content into a server of a business platform, and all nodes subscribing the public information channel have the right to browse the comment content;
(S4) the comment management node forms a transaction proposal with the log content after the management action, the transaction proposal is submitted to a consensus service node after endorsement verification by the endorsement node, the consensus service node broadcasts the transaction information generated by the log content into blocks to each Peer node in the same channel with the comment management node, writes the transaction information into a platform information management channel block chain, simultaneously takes the management operation into effect, stores the log content into a server of a commercial platform, and all nodes subscribing the platform information management channel have the right to browse the log content.
Specifically, the endorsement node in the step (S3) is another consumer node specified by the intelligent contract of the blockchain network and having the same type of consumption behavior.
Specifically, the endorsement node in the step (S4) is another comment management node that is specified by the intelligent contract of the blockchain network and that has processed the same kind of management transaction.
Specifically, when a new node applies for adding, the member management service issues a digital certificate for the new node after confirming the identity of the new node by a CA mechanism, and simultaneously subscribes a block chain channel corresponding to the identity of the new node.
Further, in the step (S3), the block chain uplink procedure is as follows:
(S31) the consumer nodes form transaction proposals by the comment contents after the consumption behaviors occur, and sequentially send the transaction proposals to endorsement nodes for endorsement verification, wherein the endorsement nodes are other consumer nodes which are specified by the intelligent contract and have similar consumption behaviors;
(S32) the endorsement node returning the endorsed transaction proposal to the consumer node that sent the transaction proposal, wherein the endorsement verified transaction proposal is tagged with the endorsement information Anchor of the endorsement node;
(S33) when the consumer node sending the transaction proposal collects a sufficient amount of endorsement information, submitting the transaction proposal and all the endorsement information corresponding to the transaction proposal to a consensus service node, carrying out transaction sequencing on the transaction information by the consensus service node, generating blocks, broadcasting the blocks to all Peer nodes in a public information channel after generating the blocks, and adding the blocks into a block chain after being verified by the nodes.
Furthermore, the comment information credibility method based on the blockchain technology is also provided with a CouchDB-based world state database for recording the transaction proposal and the state update of the transaction information; in the block chain network, a Peer node maintains and updates a world state database by communicating with a consensus service node.
In the step (S3), when the status of the transaction proposal or the transaction information is updated, the corresponding transaction data is stored in the world status database in the form of key value pairs.
Specifically, after the comment managing user performs an operation, the behavior of the comment managing user generates a behavior log, and the block chain linking process in the step (S4) is as follows:
(S41) the administrator node forms the transaction proposal by the log content after the administration action, and sends the transaction proposal to the endorsement node in sequence for endorsement verification, wherein the endorsement node is other administrator nodes which are appointed by the intelligent contract and process the same kind of administration affairs;
(S42) the endorsement node returning the endorsed transaction proposal to the administrator node that sent the transaction proposal, wherein the endorsement verified transaction proposal is tagged with the endorsement information Anchor of the endorsement node;
(S43) when the administrator node sending the transaction proposal collects a sufficient amount of endorsement information, submitting the transaction proposal and all the endorsement information corresponding to the transaction proposal to a consensus service node, carrying out transaction sequencing on the transaction information by the consensus service node, generating blocks, broadcasting the blocks to all Peer nodes in the platform information management channel after the blocks are generated, and adding the blocks into a block chain after the blocks are verified by the Peer nodes.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the method, based on the Hyperleader Fabric of the block chain development platform, the block chain technology is applied to the network comments of the business platform, so that the comment contents are real and effective and cannot be falsified, the phenomenon of malicious favorable comment or poor comment is avoided, and meanwhile, the privacy of the user is protected.
(2) The invention adopts the design of multi-channel and multi-account book to enhance the safety and the privacy of the system, each channel has a block chain, and the data of the block chain in a certain channel is invisible and inaccessible to the network entity which does not subscribe the channel.
(3) The invention enables users with different identities to be used as nodes to maintain channels corresponding to the nodes by configuring the member management service, thereby being beneficial to providing services of identity management, privacy, confidentiality and auditability on a network for the participants of the Fabric.
(4) The blockchain technology used by the invention is a distributed shared account book technology based on transaction calling and digital events, data on an account book is maintained by a plurality of participating nodes, once the data is recorded, transaction information on the account book can never be tampered, and traceability query is supported through a timestamp; the invention stores the comment information by using the block chain technology, the information content of the comment information can never be modified once the information content is linked, and the comment person, the score, the comment content and the party to be commented can be well documented and checked.
(5) The present invention introduces endorsement policies and world states. The intelligent contract specifies endorsement nodes to execute an endorsement strategy, and the authenticity of the comments can be checked; the world state records the latest state of each comment data, so that malicious behaviors are conveniently inquired and checked.
Drawings
Fig. 1 is a schematic structural diagram of a system adopted in the embodiment.
FIG. 2 is a schematic flow chart of an embodiment of a consumer.
FIG. 3 is a flow diagram of an administrator embodiment.
FIG. 4 is a block chain structure.
Fig. 5 is a block structure diagram.
FIG. 6 is a block transaction data structure.
FIG. 7 is a schematic diagram of the structure of a plurality of channels in the embodiment.
Detailed Description
The present invention is further illustrated by the following figures and examples, which include, but are not limited to, the following examples.
Examples
As shown in fig. 1 to 7, the system adopted by the comment information credibility method based on the blockchain technology comprises a server of a business platform and a blockchain network.
Early preparation:
constructing an electronic business platform, wherein the electronic business platform comprises a server, a central database and platform management, wherein the central database is used for providing a basic software architecture and realizing large-scale data storage, and the platform management comprises malicious user supervision, comment content review, common user management and the like;
and the block chain network is composed of nodes and intelligent contracts and is used for realizing the specific logic of credibility of the comment information. The nodes are divided into Peer nodes and consensus service nodes, and the Peer nodes are responsible for submitting actual transaction calls and communicating with the consensus service nodes to request the task of broadcasting transactions; the Peer node maintains and updates the world state by communicating with the consensus service node; meanwhile, the Peer node can additionally play the role of an endorsement node and is responsible for endorsement of the transaction. The intelligent contract is used for specifying the endorsement node and the coding service clause of the current channel.
And a CouchDB-based world state database is also configured for recording the state update of the transaction. Generating a status database provider by a calling method of a CouchDB type database according to a flag bit of the CouchDB database started in configuration at the beginning; then calling a related method to create a state database, then passing the state database as a parameter to a related method calling execution for creating a local Peer node book, and finally packaging the state database into a device called a transaction manager, so that the world state database can be accessed to obtain the latest state data and verify the validity of the transaction.
The specific process is as follows:
(1) and (3) new user registration:
after confirming the identity of the trusted authority CA, the trusted authority CA issues a digital certificate for the user and subscribes a block chain channel corresponding to the identity of the user. And then configuring member management service, and allocating and subscribing different block chain channels for the new user of the business platform according to different identities, wherein all users in the same block chain channel are used as nodes to jointly maintain the block chain channel. The consumer users and the merchant users subscribe the public information channel, and the comment management users subscribe the platform information management channel; the comment management user is mainly used for maintaining daily affairs of the platform, including user behavior management, customer service, speech review and the like, and a behavior log of the comment management user is recorded in the platform information management channel.
(2) Comments are made after consumption occurs:
after a consumer purchases a commodity and issues a comment, the comment content forms a transaction proposal, after the consumer clicks to send the comment, the transaction proposal is sequentially sent to an endorsement node specified by an intelligent contract for endorsement verification (it is noted that the endorsement node specified by the intelligent contract can determine whether the transaction is the endorsement of the transaction, in order to obtain the approval of the endorsement node as far as possible, the consumer node needs to ensure that the sent transaction proposal is real and effective), the endorsement node returns the transaction proposal after the endorsement verification to the consumer node sending the transaction proposal, wherein the transaction proposal passing the endorsement verification is marked with endorsement information Anchor of the endorsement node, after the consumer node sending the transaction proposal collects a sufficient amount of endorsement information, the transaction proposal and all corresponding endorsement information are submitted to a consensus service node, and transaction information (the hash value of the comment content and the root of Merkle) related to the comment content is generated, the consensus service node carries out transaction sequencing on the transaction information and generates a block, the block is generated and then broadcasted to all Peer nodes in a public information channel, the block is added into a block chain after being verified by the nodes, and a consumer node initiating the transaction proposal is informed whether the transaction is effective or not and whether the transaction is added into the block chain or not through an event mechanism. If the block chain is successfully added, the comment information of the commodity is stored in the central database, all registered users can browse, and the transaction process is shown in fig. 2. But if not enough endorsement information is received within a period of time, the consumer node initiating the proposal for the transaction will abort the transaction or retry at a later time.
During the transaction, the status update of the transaction information will be recorded in the world status. The world state is initially empty, and when a transaction occurs, the transaction information is stored in the CouchDB database in the form of a key-value pair, and when the transaction information state, i.e., its key-value pair, changes, the latest state is recorded in the world state. After the verified comment information is stored in the block, the comment information and the world state are written into the book together, so that the world state database can be accessed to obtain the latest state data, and the validity of the transaction is verified.
(3) The administrator reviews the comment content:
the platform information management channel is subscribed by a comment management user of the business platform. After the administrator performs management operation, the behavior of the administrator generates a behavior log, the administrator node forms the content of the operation log after the management behavior is generated into a transaction proposal and sequentially sends the transaction proposal to an endorsement node for endorsement verification, similarly, the endorsement node is other administrator nodes which are specified by an intelligent contract and process the same kind of management affairs (the endorsement node specified by the intelligent contract can determine whether the transaction endorsement is the transaction endorsement, and in order to obtain the endorsement node approval as much as possible, the administrator node needs to ensure that the sent transaction proposal is as reasonable as possible), the endorsement node returns the transaction proposal after the endorsement verification to a consumer node sending the transaction proposal, wherein the transaction proposal passing the endorsement verification is marked with the endorsement information Anchor of the endorsement node, and when the administrator node sending the transaction proposal collects a sufficient amount of endorsement information, the transaction proposal and all corresponding endorsement information are submitted to a common identification service node, generating transaction information (hash value of log content and Merkle root thereof) associated with the log content, carrying out transaction sequencing on the transaction information by the consensus service node and generating a block, broadcasting the block to all Peer nodes in a platform management information channel after generating the block, adding the block into a block chain after the block is verified by the Peer nodes, and informing an administrator node initiating the transaction proposal whether the transaction is effective and whether the transaction is added into the block chain through an event mechanism. If the joining of the blockchain is successful, the management operation will take effect and the management operation log will be stored in the central database, all the administrator users can browse, and the above transaction process is shown in fig. 3. But if not enough endorsement information is received within a period of time, the administrator node initiating the proposal will abort the transaction or retry at a later time.
Likewise, status updates to the transaction information will be recorded in the world status during the transaction.
Through the process, the comment information generated by the consumption of the consumer can be effectively guaranteed to be reliable and credible, reliable and credible basis is provided for other consumers who will purchase the same commodity, the judgment of the real quality of the commodity is improved, and the order of the whole online commercial environment is maintained.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, but all changes that can be made by applying the principles of the present invention and performing non-inventive work on the basis of the principles shall fall within the scope of the present invention.
Claims (8)
1. A comment information credibility method based on a block chain technology is characterized by comprising the following steps:
(S1) building a block chain network in the business platform, according to the characteristics of Hyperhedger Fabric, constructing a public information channel and a platform information management channel which are independent from each other and are provided with a block chain in the public information channel, wherein the public information channel is used for recording public information based on comment content, and the platform information management channel is used for recording platform management information; the nodes in the block chain network are divided into Peer nodes and consensus service nodes, the Peer nodes are responsible for submitting actual transaction calls and communicating with the consensus service nodes to request a task of broadcasting transaction, and meanwhile, the Peer nodes can be designated as endorsement nodes and are responsible for transaction endorsements;
(S2) configuring member management service, distributing and subscribing registered users of a business platform to different channels according to different identities, and taking all users in the same channel as Peer nodes to jointly maintain the channel, wherein both consumer users and business users subscribe a public information channel and comment management users subscribe the platform information management channel;
(S3) the consumer node forms a transaction proposal with the comment content after the consumption behavior, the transaction proposal is submitted to a consensus service node after endorsement verification by the endorsement node, the consensus service node broadcasts the transaction information generated by the comment content to each Peer node in the same channel with the consumer node after blocking, writes the transaction information into a public information channel block chain, stores the comment content into a server of a business platform, and all nodes subscribing the public information channel have the right to browse the comment content;
(S4) the comment management node forms a transaction proposal with the log content after the management action, the transaction proposal is submitted to a consensus service node after endorsement verification by the endorsement node, the consensus service node broadcasts the transaction information generated by the log content into blocks to each Peer node in the same channel with the comment management node, writes the transaction information into a platform information management channel block chain, simultaneously takes the management operation into effect, stores the log content into a server of a commercial platform, and all nodes subscribing the platform information management channel have the right to browse the log content.
2. The method for trusting information on comments based on blockchain technology in accordance with claim 1, wherein the endorsement node in step (S3) is another consumer node specified by an intelligent contract of a blockchain network and having the same kind of consumption behavior.
3. The method of claim 1, wherein the endorsement node is another comment management node that has handled the same kind of management transaction and is specified by an intelligent contract of the blockchain network in the step (S4).
4. The method as claimed in claim 1, wherein when a new node applies for entering, the member management service issues a digital certificate after confirming its identity by a CA organization, and simultaneously subscribes to a blockchain channel corresponding to its identity.
5. The method for trusting comment information based on blockchain technology of claim 1, wherein the blockchain chaining process in the step (S3) is as follows:
(S31) the consumer nodes form transaction proposals by the comment contents after the consumption behaviors occur, and sequentially send the transaction proposals to endorsement nodes for endorsement verification, wherein the endorsement nodes are other consumer nodes which are specified by the intelligent contract and have similar consumption behaviors;
(S32) the endorsement node returning the endorsed transaction proposal to the consumer node that sent the transaction proposal, wherein the endorsement verified transaction proposal is tagged with the endorsement information Anchor of the endorsement node;
(S33) when the consumer node sending the transaction proposal collects a sufficient amount of endorsement information, submitting the transaction proposal and all the endorsement information corresponding to the transaction proposal to a consensus service node, carrying out transaction sequencing on the transaction information by the consensus service node, generating blocks, broadcasting the blocks to all Peer nodes in a public information channel after generating the blocks, and adding the blocks into a block chain after being verified by the nodes.
6. The method of claim 5, wherein a CouchDB-based world state database is further configured to record the status updates of the transaction proposal and the transaction information; in the block chain network, a Peer node maintains and updates a world state database by communicating with a consensus service node.
7. The method of claim 6, wherein in step (S3), when the status of the transaction proposal or transaction information is updated, the corresponding transaction data is stored in the world status database in a key-value pair form.
8. The method of claim 1, wherein after the comment managing user performs an operation, a behavior log is generated by the behavior of the comment managing user, and the blockchain linking process in the step (S4) is as follows:
(S41) the administrator node forms the transaction proposal by the log content after the administration action, and sends the transaction proposal to the endorsement node in sequence for endorsement verification, wherein the endorsement node is other administrator nodes which are appointed by the intelligent contract and process the same kind of administration affairs;
(S42) the endorsement node returning the endorsed transaction proposal to the administrator node that sent the transaction proposal, wherein the endorsement verified transaction proposal is tagged with the endorsement information Anchor of the endorsement node;
(S43) when the administrator node sending the transaction proposal collects a sufficient amount of endorsement information, submitting the transaction proposal and all the endorsement information corresponding to the transaction proposal to a consensus service node, carrying out transaction sequencing on the transaction information by the consensus service node, generating blocks, broadcasting the blocks to all Peer nodes in the platform information management channel after the blocks are generated, and adding the blocks into a block chain after the blocks are verified by the Peer nodes.
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