CN111625873A - Controllable information disclosure method and system based on mixed block chain - Google Patents

Abstract

The present disclosure discloses a method and system for publicizing controllable information based on a hybrid blockchain, wherein a method for publicizing controllable information based on a hybrid blockchain includes: acquiring the details of publicized information, and constructing a consortium chain and a public chain. Shared data model; publish the public information on the alliance chain for storage in a blockchain-like structure, and digitally sign the public information; broadcast the public key in the public information and digital signature to those in the alliance chain according to the publicity scope request. On all user nodes of the authority, and through the cross-chain mechanism, the public information and the digital signature public key are released to the public chain; the user uses the digital signature to extract and verify the public information on the public chain. The reliability of information is improved, and the smart contract controls the publicity time and improves the timeliness of publicized information.

Description

A controllable information disclosure method and system based on hybrid blockchain

technical field

The present disclosure relates to a controllable information disclosure method and system based on a hybrid blockchain.

Background technique

The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

Information publicity refers to a way for party and government organs, enterprises, institutions, social groups and other institutions to give notice to the public in advance to solicit opinions and improve work. Publicity results, the information carried by the information publicity has the characteristics of openness, well-known, scientific, democratic, authoritative, etc. Openness means that the publicized information should be open to the whole range or a specific range of people, and it is transparent. There are no secrets and black box operations; knowledgeable means that the purpose of publicity is to let those who pay attention to its content and information understand it and participate in it; scientificity means that the time of publicity is scientific and reasonable, not only to reflect The process of publicity should reflect the results of the publicity and the will of the masses. Publicity is a prior publicity, not an after-the-fact publicity. Democracy means that the process and results of the publicity are open, fair, and just, with the participation of the masses. Supervision and Accreditation.

Information publicity is a commonly used technical means in the field of information processing. The traditional methods of information publicity include bulletin announcements, meeting announcements, and public announcements. It can also be published through newspapers, television, radio and other news media. With the development, various information publicity systems also appeared. The existing publicity methods lack timeliness, and traditional information publicity methods cannot accurately measure the information publicity time. Most of them require staff to set the publicity content and time, so the accuracy of the information publicity time cannot be achieved, and the publicity time is not scientific enough; Both the method and the information publicity system have the possibility of tampering with the publicity content, which leads to the low credibility of the information publicity content, the lack of effectiveness and authority of the publicity method; at the same time, when the existing publicity method is used for information publicity, the public cannot participate. If you are unwilling to participate in the publicity process, or because of privacy and other reasons, you can only accept it passively, and the results of the publicity are not transparent.

Therefore, the inventor believes that the traditional information publicity methods and information publicity systems have problems such as uncontrollable publicity information, unscientific publicity time, and low reliability of publicity methods.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present disclosure proposes a controllable information publicity method and system based on a hybrid blockchain. A hybrid blockchain platform is constructed on the basis of the alliance chain and the public chain. It prevents information tampering and improves the reliability of information. The smart contract controls the publicity time and improves the timeliness of publicized information.

The first purpose of this disclosure is to propose a controllable information disclosure method based on hybrid blockchain, including,

Obtain the details of the public information, and build the shared data model of the alliance chain and the public chain;

Publish the public information to the alliance chain for storage in a blockchain structure, and digitally sign the public information;

According to the publicity scope request, broadcast the publicity information and the public key in the digital signature to all user nodes with authority in the alliance chain, and publish the publicity information and digital signature public key to the public chain through the cross-chain mechanism;

Users use digital signatures to extract and verify public information on the public chain.

The second purpose of this disclosure is to propose a hybrid blockchain-based controllable information disclosure system, including a hybrid storage layer, a blockchain access layer, a blockchain service layer, an interface layer, and an application layer.

The hybrid storage layer provides data storage services with different requirements for the alliance chain;

Blockchain access layer, access alliance chain and public chain, and provide cross-chain services for alliance chain and public chain;

The blockchain service layer provides side chain protocols and smart contracts for the blockchain entry layer, and controls the user's access attributes through smart contracts;

The interface layer is connected to the blockchain service layer, and the blockchain service layer invokes the smart contract according to the access data of the interface layer;

The application layer interacts with users for user login and publicity information.

Compared with the prior art, the beneficial effects of the present disclosure are:

1. The controllable information publicity method based on the hybrid blockchain disclosed in the present disclosure, after the publicity information is released to the alliance chain, is stored in a blockchain structure. reliability and authority.

2. The controllable information publicity method based on the hybrid blockchain disclosed in the present disclosure, when publicizing information, the publicity time is controlled by the smart contract, which achieves scientific measurement and control, and ensures the timeliness of publicized information.

3. The controllable information publicity method based on the hybrid blockchain and the hybrid blockchain architecture design based on the cross-chain mechanism of the present disclosure enable the main body of the information publicity agency to control the scope of publicity dissemination and operation authority as needed, so as to realize the publicity of information. Controllable and avoid human intervention factors.

Description of drawings

The accompanying drawings that form a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute improper limitations on the present application.

Figure 1 is a data structure diagram of the disclosed blockchain;

FIG. 2 is a diagram of the disclosed genesis block and block structure;

FIG. 3 is a logical block diagram of the smart contract control and publicity time according to Embodiment 1 of the present disclosure;

FIG. 4 is a logical block diagram of the smart contract control and publicity time according to Embodiment 2 of the present disclosure;

FIG. 5 is a logical block diagram of the smart contract control and publicity time according to Embodiment 3 of the present disclosure;

FIG. 6 is an architecture diagram of an information disclosure system based on a hybrid blockchain of the present disclosure;

FIG. 7 is a block diagram of a cross-chain service of the present disclosure.

Detailed ways:

The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

The public information in this disclosure refers to the content and format to be publicized, including the title and text of the public announcement, the reason and purpose of the public announcement, the situation of the public announcement object, the time limit of the announcement, the address and contact information of the feedback agency, and the announcement agency. name and release time, etc.

The objects of publicity refer to the persons, affairs and other entities involved in the publicity information.

Example 1

In this embodiment, a controllable information publicity method based on a hybrid blockchain is disclosed, a hybrid blockchain platform is constructed based on a consortium chain and a public chain, and block data is generated for public information to prevent tampering, and a smart contract automatically Control the publicity time, the publicity subject and users participate in the publicity process, and the publicity results can be traced back, so that the publicity is authoritative and effective, including:

Obtain the details of the public information, and build the shared data model of the alliance chain and the public chain, including the public information data structure.

The data structure of public information includes title, reason for public announcement, basic situation, start time, time limit for public announcement, deadline, scope of public announcement, address of feedback unit, contact information, name of public announcement agency, release time, public information status, public information history, numbers signature etc.

The data structure is as follows:

Type public information struct{

title;

the reason for the announcement;

basic situation;

start time;

public notice period;

deadline;

the scope of publicity;

Address of feedback unit;

Contact information of feedback unit;

The name of the publicity agency;

release time;

public information status;

public information history;

digital signature

}

The history of public information includes the circulation of public information, such as public information release, public information review, public information forwarding, public information feedback, and the receipt of public information, etc. will be recorded in the historical information by smart contracts.

The new public information is released to the alliance chain through the public release application interface, and the public information is digitally signed. After the release is successful, the initial state is "newly released" and marked as 000001. If the public information already exists on the alliance chain, then An error message is output and a prompt "Repeated release of public information" is displayed.

After the public information data is published on the alliance chain, it is stored in a blockchain structure. A block consists of a block header and a block body. The block header contains the hash value of the previous block and the hash value of the current block. and timestamp, in which the hash value of the previous block is used to link to the previous block and ensure the integrity of historical data through the timestamp, and the block body contains all transaction information that has passed the verification. The block chain structure ensures the authenticity, integrity, time sequence and non-tampering of the public information data in the block. The first block of the blockchain is called the genesis block.

The alliance chain automatically controls the announcement time of the announcement information through the smart contract, starts announcement from the release time, and automatically calculates the announcement deadline according to the start time and announcement time limit, and automatically cancels the announcement when the deadline arrives.

The logic algorithm of the announcement time for the smart contract to automatically control the announcement information is as follows:

(1) The application calls the smart contract to obtain the start time startDay;

(2) Obtain the number of days N of public notice;

(3) Define variables period=0, today=startDay;

(4) If period<=N, then today+=1, otherwise go to (6);

(5) If today is a working day, then period+=1, go to (4); if today is not a working day, go to today+=1, and continue (5);

(6) Return the end time endDay=today, which is automatically assigned to the deadline.

According to the request of the publicity scope, broadcast the publicity information to the alliance chain for authorization and publicity, and publish the publicity information to the public chain through the cross-chain mechanism for public publicity, specifically:

According to the request for the publicity scope, based on the Gossip protocol, the publicity information is broadcast to all user nodes with authority in the alliance chain through the decentralized P2P network. If the publicity scope is public publicity on the whole network, the publicity information will be publicized through the cross-chain mechanism. The information is published on the public chain for publicity.

The Gossip-based broadcast implementation process is that after a node receives a message, it randomly selects K nodes and sends the message to them. If the node does not respond, it updates the discovery module data synchronously. The state synchronization based on anti-entropy will synchronize between different nodes. They periodically compare information with other nodes to keep the state synchronized. Each node maintains complete membership information and can randomly select nodes when sending information to maintain robustness and reliability.

Users can view the public information according to the authority, request to verify the reliability of the public information, and participate in the feedback of the public information.

User access to information based on authority means that the dissemination of public information is controlled by the scope, and the scope of dissemination is determined by the subject of information publicity, and determines the fine-grained authority for the dissemination of public information, including but not limited to forwarding, copying, downloading and other authority.

The request to verify the reliability of public information means that in the process of public information dissemination in the decentralized P2P network, users perform source verification and information verification on public information obtained from other users, and use the digital signature of the public information to verify the organization to which the public information belongs. The MD5 information digest algorithm is used to verify the integrity and reliability of public information data.

In order to ensure the authenticity, integrity and non-repudiation of information dissemination, the information publicity agency publishes public information in the information publicity system based on the hybrid blockchain, and digitally signs the public information. The dissemination process is as follows:

(1) Information publicity agency A is ready to disseminate publicity information;

(2) A performs a hash operation on the public information to obtain an information digest;

(3) A encrypts the message digest with its own private key to obtain its own digital signature, and attaches it to the public information;

(4) A disseminates the public information and its own public key;

(5) Users B and C receive public information from different participating nodes, and use A's public key to decrypt the digital signature of the public information to obtain the information digest;

(6) B and C use the same hash algorithm to perform another hash operation on the received public information to obtain a new information digest;

(7) B and C compare the received information abstract with the newly generated information abstract. If they are consistent, it means that the received public information comes from information publicity agency A.

Participating in public information feedback means that users who are not true to the specific content of the public information, or believe that there are problems with the public information, etc., through the application of the information publicity system based on the hybrid blockchain, report the problems they find to the information publicity agency and participate in publicity. process.

The main body of the information publicity agency verifies the source of information feedback, investigates the publicity object, verifies the authenticity of the feedback information, and publicizes the survey results.

The smart contract automatically publishes the information publicity results according to the deadline for publicizing the information.

Example 2

In this embodiment, only the announcement time logic algorithm of the smart contract automatic control announcement information in Embodiment 1 is modified, specifically:

(1) The application calls the smart contract to obtain the start time startDay;

(2) Obtain the number of days N of public notice;

(3) Define variables period=0, today=startDay;

(4) If period<=N, then today+=1, otherwise go to (6);

(5) If today is a holiday or weekend, then today+=1, continue to transfer (5), otherwise period+=1, transfer to (4);

(6) Return the end time endDay=today, which is automatically assigned to the deadline.

The rest of the steps are the same as in Example 1.

Example 3

In this embodiment, only the announcement time logic algorithm for the smart contract to automatically control the announcement information in Embodiment 1 is modified, and the announcement time logic algorithm for the smart contract to automatically control the announcement information is as follows:

(1) The application calls the smart contract to obtain the start time startDay;

(2) Obtain the number of days N of public notice;

(3) Define variables period=0, today=startDay;

(4) If period<=N, then today=startDay+1, otherwise go to (7);

(5) If today is a holiday, then today+=1, otherwise go to (6);

(6) If today is a weekend, then today+=1, then period+=1, go to (4);

(7) Return the end time endDay=today, which is automatically assigned to the deadline.

The rest of the steps are the same as in Example 1.

Example 4

In this embodiment, a controllable information publicity system based on hybrid blockchain is disclosed, wherein the hybrid grid architecture based on the cross-chain mechanism is compatible with the consortium chain and the public chain, and provides data tamper-proof, complete and complete information for the information publicity system. The hybrid blockchain can be customized according to requirements, and its alliance members have the right to decide the access rights of members, which public information should be publicized in a specific range, and which public information should be publicized on the whole network.

The architecture of the information publicity system based on the hybrid blockchain is an aggregated chain architecture including consortium chain, cross-chain mechanism, and public chain. Based on the consortium chain, the specific application of the information publicity business is realized, and the data in the consortium chain is realized through cross-chain technology. A data information collaboration is formed between the information and the public chain, and the publicized information is authorized to be publicized in the alliance chain and publicized in the public chain according to the needs, so as to truly realize the controllability of the publicity scope and authority of the publicized information.

The architecture of information disclosure system based on hybrid blockchain includes hybrid storage layer, blockchain access layer, blockchain service layer, interface layer, and application layer.

The hybrid storage layer provides data storage services with different requirements for the alliance chain;

Blockchain access layer, access alliance chain and public chain, and provide cross-chain services for alliance chain and public chain;

The blockchain service layer provides side chain protocols and smart contracts for the blockchain entry layer, and controls the user's access attributes through smart contracts;

The interface layer is connected to the blockchain service layer, and the blockchain service layer invokes the smart contract according to the access data of the interface layer;

The application layer interacts with users for user login and publicity information.

specific:

The hybrid storage layer integrates the interstellar file system IPFS, the Storj cloud storage system and the hybrid cloud storage service Cloud Service to provide data storage services with different requirements for the blockchain connection platform. The interplanetary file system IPFS is a global, peer-to-peer distributed file system that provides users with fast and secure data storage services based on content addresses. The Storj cloud storage system is a decentralized, end-to-end, non-stop system. A public distributed encrypted cloud storage platform on the end, based on blockchain technology to ensure encrypted storage of data information uploaded by users to the blockchain, hybrid cloud storage services, using the low-cost and fast access characteristics of public cloud storage, combined with private cloud storage It can be customized to realize a data synchronization and sharing system based on hybrid cloud storage, customize the location of data storage, store important data in private cloud storage to enhance data security, and can also store data in public storage according to changes in business needs. Data migration service between cloud storage and private cloud storage.

The hybrid storage layer provides different storage solutions for the alliance chain according to different application scenarios to meet different needs. The storage of the alliance chain Hyperledger Fabric in the hybrid blockchain system is divided into three parts: ledger data, state data and historical data. The ledger data Using the traditional block storage solution, it is stored in low-cost cloud storage. State data and historical data support native LevelDB and CouchDB. For unstructured data such as files, pictures, and videos, it can be stored in the fusion interstellar file system IPFS or Storj in the cloud storage system.

The blockchain access layer includes the blockchain access platform and cross-chain services.

The blockchain access platform is based on the open source application container engine Docker, which is connected to the consortium chain HyperledgeFabric, the blockchain technology open source platform BCOS focusing on enterprise-level application services, and the public chain BTC and other heterogeneous multi-chains, forming a hybrid blockchain adaptation Floor.

Cross-chain services, realize the data exchange and sharing between the alliance chain and the public chain in the form of side chain. The alliance chain and the public chain communicate together based on the side chain protocol, and use the side chain to establish various smart contracts to realize the data information certificate in the Secure transfer between alliance chain and public chain, cross-chain service supports data trusted interaction service between homogeneous/heterogeneous blockchains, and realizes isomorphism based on the protocol stack and cross-chain smart contract in the underlying blockchain Or the trusted interaction between heterogeneous blockchains, thus forming a hybrid blockchain value network, realizing the trusted flow of data information and value on the chain, and completing rich inter-chain interoperability.

Blockchain service layer, including multi-chain management, user management and smart contracts.

Multi-chain management, responsible for managing all side chains, including side chain index, capital status and validator pledge status, etc., mainly to realize side chain registration, validator information change, cross-chain information exchange, side chain asset dynamic management, side chain cancellation and other functions.

The registration of the side chain to the main chain requires KYC certification, and submits basic information such as the genesis block information to the main chain. At the same time, the side chain needs to pledge guarantee on the main chain. The guarantee is jointly pledged by the initial validator of the side chain, and the side chain The guarantee of each verifier’s mortgage is determined by the side chain verifiers through negotiation. Before submitting the registration information, if the mortgage amount is insufficient, the registration will fail. The main chain governance committee will review the basic information submitted by the side chain, and manage the The data information used by the chain to interact with other chains.

When the validator information changes and the validator information on the side chain changes, then a new validator is required to go to the main chain to pledge the guarantee before the change. When the information state synchronization program will include the new consensus cycle validator block header will be submitted to the main chain , the main chain will verify whether the total mortgage of the new validator is sufficient. If it is insufficient, the block header synchronization will be rejected, and the old sidechain validator's original mortgage guarantee will be unlocked after the next two validator information changes. .

Cross-chain information exchange, after the side chain registration is completed, users can register their data information on the main chain in a certain side chain in the information resource pool of the main chain in exchange for the corresponding data information on the side chain. After the chain registration locks the data in the information resource pool on the main chain, the main chain will generate corresponding information. If the main chain information resource pool is full, the locking will fail. If the main chain is successfully locked, the user can use the data information generated by the main chain. The side chain releases the corresponding proportion of data. On the contrary, if the user destroys the data information in the side chain, the corresponding data can be released in the main chain information resource pool according to the data information generated by the side chain.

Dynamic management of side chain information. If the side chain wants to expand the capacity of the information resource pool in the main chain, the side chain can increase its own guarantee in the main chain and submit an application to the main chain. The capacity of the information resource pool on the main chain will be expanded, and the data supply of the side chain will also increase accordingly. Correspondingly, if the side chain wants to reduce the capacity of the information resource pool in the main chain, the side chain needs to submit to the sub-chain first. If the application is approved, the information resource pool capacity of the side chain on the main chain will be reduced, and the information resource capacity of the side chain will also be reduced accordingly.

Sidechain deregistration. If the sidechain needs to be deregistered, it is necessary to submit a deregistration application to the main chain and wait for a challenge period. During the challenge period, users can exchange sidechain data information back to the main chain independently, and the challenge period ends. Afterwards, if there is still information on the side chain that has not been exchanged, this part of the information cannot be transferred back to the main chain in the future.

User management includes user registration, authentication management, and attribute-based access control.

User registration and registration, the user performs user registration and registration on the blockchain network platform, and obtains the CA certificate.

Identity authentication management, when a business application accesses a blockchain service, the blockchain verifies and accesses the user's identity information

Attribute-based access control, when the user's identity is registered, the login certificate contains one or more attribute names and values, and the smart contract runtime can extract the attribute values to make access control decisions. For example, in an application app, only its administrator can access a specific chaincode operation. The smart contract decides whether to allow access based on whether the caller's certificate contains the appAdmin attribute and whether the attribute value is "true".

Users use smart contracts to cross-chain. Smart contracts, namely chain codes, are code logic that runs on the blockchain and are automatically executed under certain conditions. It is an important way for users to use the blockchain to realize business logic. Due to the characteristics of the chain, the operation results of smart contracts are credible, and the results cannot be forged and tampered with.

A smart contract is a computer protocol designed to disseminate, verify or execute a contract in an information-based manner. It is a collection of code and data that exists at a specific address in the blockchain. Contract accounts can transfer information between each other and perform Turing-complete operations. , smart contracts allow for trusted transactions without third parties that are traceable and irreversible.

The implementation of the smart contract determines the agreement between the participants. When the participants are committed to the execution of the contract by installing the contract on the contract host platform, the contract is discovered, and the "execution" of the smart contract also depends on technical means. Actively implemented, it becomes computer-readable code, and smart contracts deployed on the blockchain can automatically execute the business logic of the blockchain, with programmability, atomicity, and consistency.

Smart contracts have the following characteristics:

(1) The process cannot cheat: it is automatically triggered when the conditions are met, and the execution result is independently verified.

(2) The result cannot be modified: the data is stored in the blockchain.

(3) Reliable contract content: The content of the smart contract is stored in the blockchain, and the content information can be traced back.

(4) Privacy protection: Only designated participants can obtain contract content and data.

The interface layer includes application programming interface APIs and software development kits SDKs.

The application program interface is a function that meets the design requirements of RESTful API and is predefined in the blockchain to call blockchain services for application operations. REST observes the entire network from the perspective of resources. Resources distributed in various places are determined by URIs, and client applications obtain resources through URLs. The general format of the URL is: https://uri. The uri is the resource path, that is, the path accessed by the API. The API interface adopts the HTTP transmission protocol, the request/response packets use JSON packets, and the media type is Application/json. The application calls the API interface through coding, assembles the request message, and sends the processing request message.

REST API request/response pairs can be divided into five parts:

(1) The request URI, which is included in the request message header and delivered separately in the request message, in the format of {URI-scheme}://{Endpoint}/{resource-path}? {query-string}.

(2) Request message header, including HTTP method and custom message header,

HTTP method, that is, operation, what type of operation is requested to the blockchain service layer, such as the PUT method, which requests the server to update the specified resource.

Custom message header, that is, the message header customized by the chaincode REST API, such as the signature of the message body of the chaincode call request, whether the message is compressed, etc.

(3) The request message body refers to the chain code invocation function, which performs operations such as invoke and query on the deployed and instantiated blockchain chain code.

(4) Response message header, namely HTTP status code, from 2xx success code to 4xx or 5xx error code, or service-defined status code.

(5) The body of the response message, which is returned in a structured format (such as JSON or XML), corresponds to the Content-type in the response message header, and transmits content other than the response message header.

The software development kits (SDKs) are blockchain clients implemented in programming languages, calling smart contracts, responsible for interacting with other service nodes, and accessing various resources in the blockchain network, including ledgers, chain codes, Events, rights management, etc., provide related API interface services, and support users to develop rich applications.

The application layer is an interactive application with users, involving specific business functions, including user login, user publicity release, publicity review, publicity objection feedback, publicity results, and system settings.

This disclosure is based on the controllable information disclosure system of the mitigation block chain. The data of the block chain cannot be tampered with, and the reliability and authority of the public information is guaranteed by technical means, so that users can trust the publicity process and increase fairness. The smart contract is automatically triggered by the business application system and automatically executed according to the contract content, reducing the possibility of human intervention, scientific measurement and control of the publicity time, and ensuring the timeliness of publicity information. The hybrid blockchain architecture design based on the cross-chain mechanism enables the main body of the information publicity agency to control the scope of publicity and operation authority as needed, so as to control the publicity information and avoid human intervention. The controllable information publicity system based on the hybrid blockchain provides users with the function of participating in the publicity process. At the same time, the security mechanism of the two blocks is used to protect user privacy and improve the enthusiasm of users to participate in the information publicity process.

The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Although the specific embodiments of the present disclosure have been described above in conjunction with the accompanying drawings, they do not limit the protection scope of the present disclosure. Those skilled in the art should understand that on the basis of the technical solutions of the present disclosure, those skilled in the art do not need to pay creative efforts. Various modifications or variations that can be made are still within the protection scope of the present disclosure.

Claims (10)

1. A controllable information disclosure method based on a hybrid block chain, characterized in that, comprising, Obtain the details of the public information, and build the shared data model of the alliance chain and the public chain; Publish the public information to the alliance chain for storage in a blockchain structure, and digitally sign the public information; According to the publicity scope request, broadcast the publicity information and the public key in the digital signature to all user nodes with authority in the alliance chain, and publish the publicity information and digital signature public key to the public chain through the cross-chain mechanism; Users use digital signatures to extract and verify public information on the public chain. 2. A hybrid blockchain-based controllable information publicity method according to claim 1, wherein the publicity information data structure includes title, publicity reason, basic situation, start time, publicity time limit, deadline, Scope of publicity, address of feedback unit, contact information, name of publicity agency, release time, publicity information status, publicity information history, digital signature. 3. The method for publicizing controllable information based on a hybrid block chain as claimed in claim 1, wherein the block is composed of a block header and a block body, and the block header contains the hash of the previous block value, the hash value and timestamp of the current block. The hash value of the previous block is used to link to the previous block and ensure the integrity of historical data through the timestamp. The block body contains all public information data. 4. A hybrid blockchain-based controllable information disclosure method as claimed in claim 1, further comprising, the alliance chain automatically controls the publicity time of the publicity information through a smart contract, and starts to publicize from the release time, And according to the starting time and the time limit for publicity, the publicity deadline will be automatically calculated, and the publicity will be automatically cancelled once the deadline is reached. 5. A controllable information publicity method based on a hybrid blockchain as claimed in claim 4, wherein the process of the smart contract automatically controlling the publicity time of the publicity information is: (1) The application calls the smart contract to obtain the start time startDay; (2) Obtain the number of days N of public notice; (3) Define variables period=0, today=startDay; (4) if period<=N, then today+=1, otherwise go to step (6); (5) If today is a working day, then period+=1, go to step (4); if today is not a working day, go to today+=1, and go to step (5); (6) Return the end time endDay=today, which is automatically assigned to the deadline. 6. A controllable information publicity method based on a hybrid block chain as claimed in claim 4, wherein the process of the smart contract automatically controlling the publicity time of the publicity information is: (1) The application calls the smart contract to obtain the start time startDay; (2) Obtain the number of days N of public notice; (3) Define variables period=0, today=startDay; (4) if period<=N, then today+=1, otherwise go to step (6); (5) If today is a holiday or a weekend, then today+=1, go to step (5), otherwise period+=1, go to step (4); (6) Return the end time endDay=today, which is automatically assigned to the deadline. 7. A controllable information publicity method based on a hybrid blockchain as claimed in claim 4, wherein the process of the smart contract automatically controlling the publicity time of the publicity information is: (1) The application calls the smart contract to obtain the start time startDay; (2) Obtain the number of days N of public notice; (3) Define variables period=0, today=startDay; (4) if period<=N, then today=startDay+1, otherwise go to step (7); (5) If today is a holiday, then today+=1, otherwise go to step (6); (6) If today is a weekend, then today+=1, then period+=1, go to step (4); (7) Return the end time endDay=today, which is automatically assigned to the deadline. 8. The hybrid blockchain-based controllable information disclosure method according to claim 1, wherein the cross-chain mechanism adopts a side chain method, the consortium chain and the public chain jointly communicate based on the side chain protocol, and the side chain is used for communication. The chain establishes smart contracts to realize the safe transfer of data and information tokens between the alliance chain and the public chain. 9. A hybrid blockchain-based controllable information disclosure method according to claim 1, wherein the specific process of extracting and verifying the public information by the user is: the user performs source verification on the public information obtained from other users And information verification, use the digital signature of the public information to verify the organization to which the public information belongs, and use the MD5 information digest algorithm to verify the integrity and reliability of the public information data. 10. A controllable information publicity system based on a hybrid blockchain, characterized in that it includes a hybrid storage layer, a blockchain access layer, a blockchain service layer, an interface layer and an application layer. The hybrid storage layer provides data storage services with different requirements for the alliance chain; Blockchain access layer, access alliance chain and public chain, and provide cross-chain services for alliance chain and public chain; The blockchain service layer provides side chain protocols and smart contracts for the blockchain entry layer, and controls the user's access attributes through smart contracts; The interface layer, access information instructions, the blockchain service layer calls the smart contract according to the interface layer access data; The application layer, which interacts with users, is used for user login and public information disclosure.

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