CN112529674A

CN112529674A - Tax data service method and system adopting block chain

Info

Publication number: CN112529674A
Application number: CN202011503950.8A
Authority: CN
Inventors: 安冬敏; 冯林新; 江军
Original assignee: Digital China Information Systems Co ltd
Current assignee: Digital China Information Systems Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-03-19

Abstract

A tax data service method and system using block chain, the method includes the following steps: step 1, based on the application of a scene party, a tax bureau conducts auditing and provides access permission for the scene party based on the auditing; step 2, acquiring a tax data access authorization request based on a scene party, and signing an authorization protocol by a taxpayer through a block chain to provide data access authorization for the scene party; and 3, inquiring a tax information request of the taxpayer based on the scene party, carrying out authorization verification by a tax bureau, and transmitting the data to the scene party through the block chain. Based on the method and the system, the tax data service which is safe, reliable, easy to access and convenient to use can be provided.

Description

Tax data service method and system adopting block chain

Technical Field

The present invention relates to a data service method, and more particularly, to a tax data service method and system using a block chain.

Background

In social activities, such as banking loan transactions, enterprise financing, and admission bidding, data from enterprises and nature persons are often needed to prove their own economic performance, production and management. Meanwhile, the party in business connection with the enterprise has the conditions of higher verification difficulty and long time consumption when the authenticity of the proving information provided by the enterprise and the natural person is checked, and sometimes needs to additionally purchase third party credit investigation information to avoid loss caused by information asymmetry, and the cost is often transferred to the enterprise or the natural person.

At present, a tax department stores a large amount of tax service data of enterprise taxpayers and natural person taxpayers, the data is real and credible, and the tax data can be used for reflecting the conditions of the enterprise taxpayers. However, when the enterprise provides the tax data in the production and operation activities, the enterprise still depends on the paper certification data, and a convenient way is lacked for the enterprise taxpayer to fully utilize the self tax data stored in the tax bureau. Moreover, the party who has business with the enterprise in various business scenes (hereinafter referred to as a scene party) cannot obtain the authenticity of the tax data provided by the data verification enterprise. The problems that the tax data is high in use cost, difficult to verify and the like exist at present are caused.

In view of the above problems, a tax data service method that is secure, reliable, easy to access and convenient to use is needed.

Disclosure of Invention

In order to solve the problems of high use cost, difficult verification and the like of the existing tax data, the invention aims to provide a tax data service method and a system adopting a block chain, which can construct an authorization, transmission and verification method of the tax data based on the block chain technology, thereby improving the use efficiency of the tax data.

The invention adopts the following technical scheme.

A tax data service method adopting a block chain comprises the following steps: step 1, based on the application of the scene party, the tax bureau carries out audit and provides access permission for the scene party based on the audit; step 2, acquiring a tax data access authorization request based on a scene party, and signing an authorization protocol by a taxpayer through a block chain to provide data access authorization for the scene party; and 3, inquiring a tax information request of the taxpayer based on the scene party, carrying out authorization verification by a tax bureau, and transmitting the data to the scene party through the block chain.

Preferably, the scene party uploads the account opening application and the related application document to a tax data service system adopting a block chain; and the tax bureau conducts auditing through the tax data service system adopting the block chain, opens an account number for the scene party in the tax data service system adopting the block chain based on an auditing result and issues a private key.

Preferably, step 2 further comprises: the taxpayer sends the taxpayer access request to the scene party through one of mobile application, WeChat applet, Web page or two-dimensional code modes.

Preferably, step 2 further comprises: the taxpayer access request comprises the mobile phone number and the face information of the taxpayer; after the scene party identifies the taxpayer access request, authorization content informing information is provided for the taxpayer; the taxpayer identifies the authorization content notification information, uploads the authorization agreement and confirms the authorization.

Preferably, step 2 further comprises: the taxpayer confirms the authorization as an enterprise user or an individual user.

Preferably, step 3 further comprises: the scene party sends a request for inquiring the tax information of the taxpayer to the scene party; the tax bureau checks the taxpayer authorization information based on the request of the scene side for inquiring the tax information, inquires the tax data of the taxpayer, uploads the tax data to the block chain and generates a data uplink address; after receiving the data uplink address, the scene side inquires corresponding tax data from the block chain based on the data uplink address; the taxpayer tax information request comprises a data asset item and taxpayer identity information, wherein the data asset item takes one or more items of column names, filtering condition expressions or column filtering values in a data asset table as filtering conditions.

Preferably, step 3 further comprises: and the tax bureau checks the taxpayer authorization information, inquires tax data of the taxpayer if the scene party obtains the taxpayer authorization, and feeds back the inquiry end to the scene party if the scene party does not obtain the taxpayer authorization.

Preferably, step 3 further comprises: the tax bureau generates a tax data message according to the inquired tax data of the taxpayer, and calls a tax data chaining contract to store the tax data message to the block chain; the tax data uplink contract feeds back the data uplink address to a tax bureau, and the tax bureau feeds back the data uplink address to a scene party; the tax data message comprises a message header and a message body, the message header comprises a scene party identifier, a data asset identifier, a transaction flow number and transaction time information, and the message body comprises a taxpayer identification number, an authorization agreement book number and tax data information inquired of a taxpayer.

Preferably, step 3 further comprises: after the scene party obtains the data uplink address sent by the tax bureau, the tax data in the block chain is inquired according to the data uplink address to obtain the tax data.

The invention relates to a tax data service system adopting a block chain, which comprises a block chain supporting module, an intelligent contract module and an application module, wherein the block chain supporting module is used for providing basic technical support for a tax bureau, a scene party and a taxpayer using end so as to realize the storage and transmission of tax data among the tax bureau, the scene party and the taxpayer; and the intelligent contract module is used for signing an authorization protocol, publishing a data asset directory, managing scene party information and accessing tax data based on the block chain support module.

Preferably, the application module comprises a tax bureau, a scene party and a taxpayer using end, and is used for realizing related functions of the tax data service; the block chain support module provides basic technologies such as a P2P network, a consensus algorithm, a distributed book, an encryption technology, and chain data persistent storage; the intelligent contract module comprises a taxpayer authorization protocol signing contract, a tax data chaining storage contract, a tax data inquiry contract, a tax data asset service platform directory management contract and a scene party information management contract; the application module comprises a tax bureau, a scene party and a taxpayer using end, wherein the tax bureau using end is used for maintaining scene party information, data assets and development manuals, approving and managing scene party applications, scene party information change, scene party access logout and scene party access permission, authorized taxpayer information query, query interface logs and data asset open statistical information, the scene party using end is used for opening and logging in the scene party account number, changing scene party information, downloading the development manuals and managing products and keys, and the taxpayer using end is used for submitting an access request and a tax information request of a taxpayer, querying authorized assets, querying an authorization record and submitting confirmation authorization.

Compared with the prior art, the method and the system for the tax data service by adopting the block chain have the advantages that a mode that a tax office audits and admits to a scene party and a taxpayer authorizes the scene party to access tax data can be adopted, functions of sharing, transmitting, verifying, using and the like of tax information are provided based on the characteristics of a distributed account book and the like of block chain data, such as safety, credibility, difficulty in tampering and global consistency distribution, and the tax office provides tax data service on the premise that the taxpayer authorizes the tax office, and helps the taxpayer to provide credible tax data to the scene party. The invention can effectively solve the problem that tax data is difficult to self-certify by a taxpayer and the problem that tax data of enterprises and natural people is difficult to acquire and verify by a scene party, thereby fully exerting the value of the tax data as an important production element.

Drawings

FIG. 1 is a diagram of a system deployment in a method and system for tax data services using blockchains according to the present invention;

fig. 2 is a schematic flow chart of a scene side account opening and product admission flow in the tax data service method and system using a block chain according to the present invention;

FIG. 3 is a schematic flow chart illustrating a tax data access authorization process in the tax data service method and system using block chains according to the present invention;

FIG. 4 is a block chain-based shared transmission diagram of data assets in a method and system for tax data services using block chains according to the present invention;

FIG. 5 is a schematic diagram of a tax data service method and system function modules in the system using block chains according to the present invention.

Detailed Description

The present application is further described below with reference to the accompanying drawings. The following embodiments are merely used to more clearly illustrate the technical solutions of the present invention, and the protection scope of the present application is not limited thereby.

Fig. 1 is a diagram of system deployment in a method and system for tax data service using block chains according to the present invention. As shown in fig. 1, the taxpayer tax data service in the present invention is implemented based on a block chain technique. In the prior art, a blockchain technology is a distributed digital account book technology for uniformly distributing the whole network based on a P2P network, chain storage and decentralized, and has the characteristics of decentralized, difficult tampering, whole-course trace retention, traceability and the like.

The consensus mechanism of the block chain technology used in the invention adopts RAFT consensus algorithm, and the encryption algorithm adopts a national secret encryption algorithm. In addition, the system throughput of the data packet of the national secret 4KB stored in the network is not less than 5000 TPS.

In addition, the block chain service is established in a mode of a alliance chain. The participants of the alliance chain comprise tax bureaus, taxpayers and scene parties, and the number of the scene parties can be 1 to N. As shown in fig. 1, the tax office node, the scenario side node, and the taxpayer node are all block links in the federation chain. And the nodes of each scene party in the participants of the alliance chain are accessed into the alliance chain after being approved by the tax bureau. In addition, the tax bureau user side, the taxpayer user side and the scene side user side are respectively accessed into the block chain through the tax bureau node, the taxpayer node and the scene side node.

The invention relates to a tax data service method adopting a block chain, which comprises a step 1 to a step 3.

And step 1, based on the application of the scene party, the tax bureau conducts auditing and provides access permission for the scene party based on the auditing.

Fig. 2 is a schematic flow chart of a scene side account opening and product admission flow in the tax data service method and system using a block chain according to the present invention. As shown in figure 2 of the drawings, in which,

the scene side mechanism provides an account opening application through the scene side user end, the tax bureau conducts auditing through the tax user end, and the process is finished when the approval fails; and opening an account for the scene party mechanism on the block chain platform after the approval is passed, and issuing the private key to the scene party mechanism.

Specifically, when a scene party puts forward an account opening application, necessary information such as a mechanism name, a contact person, a contact phone, an address, an account name, an account password and the like should be filled in a using end of the scene party. Generally, government agencies also need to upload block chain tax data asset service platform cooperation protocols and registration certificates, and financial institutions and general enterprises also need to upload block chain tax data asset service platform cooperation protocols, registration certificates, legal identity card copies and other agreed document scanning pieces. The above information can be used to confirm the specific identity information of the scene party, and the access permission is opened according to the information.

And 2, acquiring a tax data access authorization request based on the scene party, and signing an authorization protocol by the taxpayer through the block chain to provide data access authorization for the scene party.

Fig. 3 is a schematic flow chart of a tax data access authorization process in the tax data service method and system using block chains according to the present invention. As shown in fig. 3, the taxpayer can transact business through the system of the scene party, and when the scene party needs to use the tax data of the taxpayer, the system of the scene party can call the service method and system of the tax data using the block chain in the invention. In addition, the scene party can also call the taxpayer using end and inform the taxpayer to carry out authorization operation through the taxpayer using end.

Preferably, the taxpayer sends the taxpayer access request to the scene party through one of a mobile application, a WeChat applet, a Web page or a two-dimensional code mode.

Specifically, the taxpayer user can click the authorized tax data when transacting business in the scene side system, and if the taxpayer user accesses the scene side through a mobile application or a wechat applet on a mobile phone or a tablet, the taxpayer can jump to the tax data service system through the mobile application or the wechat applet. If the taxpayer user accesses the scene party through the WEB page in the computer, the taxpayer can call up the tax data service system by scanning the two-dimensional code of the page.

Preferably, the taxpayer access request comprises a mobile phone number and face information of the taxpayer; after the scene party identifies the taxpayer access request, authorization content informing information is provided for the taxpayer; the taxpayer identifies the authorization content informing information to upload the authorization protocol and confirms the authorization.

Specifically, the taxpayer user can log in by using the mobile phone number, the password and the verification code, and call a real-name authentication interface of a tax bureau according to the mobile phone number. And the real-name authentication interface of the tax bureau acquires the name and the identity certificate number of the user through login information. If the tax bureau checks that the taxpayer user does not carry out real-name authentication, the information that the user does not carry out real-name authentication is fed back. And if the tax bureau verifies that the taxpayer is subjected to real-name authentication, further performing identity authentication on the currently logged-in user in a face recognition mode. And if the face recognition is not passed, prompting that the user fails to verify the identity. And if the face recognition is passed, returning the taxpayer user identity information to the scene party. The identity of the taxpayer user may be an enterprise user or an individual user. Therefore, for different identities of the taxpayer user, the personal identity information of the taxpayer user, or the job information of the enterprise serving as a legal person or a financial responsible person when the enterprise user is selected to be returned, and the like.

Preferably, the taxpayer user may confirm the authorization as an enterprise user or an individual user. And after the scene party acquires the identity information of the taxpayer user, feeding the information serving as authorization information back to the taxpayer using end. And the taxpayer using end displays the authorization information fed back by the scene party. The authorization information comprises the enterprise name, the authority party, the content of the authorization data brought out according to the product inquiry contract, the authorization deadline and the like. The taxpayer user can submit the access request according to the content.

Thus, the scenario party determines whether the taxpayer user is authorized by an enterprise user or an individual user. When the taxpayer user authorizes the enterprise, the scene side judges whether the user identity is a legal person or a financial responsible person of the enterprise. If not, the authorization is confirmed to fail and the taxpayer is fed back that the taxpayer does not have the authority. If yes, further judging whether the enterprise taxpayer transacting the business opens the tax data service, if not, feeding back the authorization failure, and prompting the taxpayer to open the tax data service. If yes, the confirmation authorization of the taxpayer is passed. In addition, when the taxpayer user performs personal authorization, whether the user opens the tax data service as a natural person taxpayer can be judged, if yes, the tax data service is opened, and if not, the feedback authorization fails, and the taxpayer is prompted to open the tax data service.

When the authorization is successful, the scene party also provides an authorization content notice to the corresponding taxpayer, so that the taxpayer confirms the authorization information. And uploading the authorization protocol and confirming the authorization after the taxpayer identifies the authorization information.

And 3, inquiring a tax information request of the taxpayer based on the scene party, carrying out authorization verification by a tax bureau, and transmitting the data to the scene party through the block chain.

FIG. 4 is a block chain-based shared transmission diagram of data assets in the method and system for tax data service using block chains according to the present invention. As shown in fig. 4, to implement the tax data service.

Preferably, the scene sending system sends a request for inquiring tax information of the taxpayer to a tax bureau; the tax bureau checks the authorization information of the taxpayer to the scene party based on the query request of the scene party, queries the taxpayer tax data conforming to the query request of the scene party, uploads the data to the block chain, and feeds back the data uplink address to the scene party; and the scene party inquires corresponding tax data after receiving the data uplink address.

Specifically, after receiving a request for inquiring the tax information of the taxpayer from the scene party, the tax bureau server side calls the inquiry request and executes the subsequent steps based on the information that whether the taxpayer is authorized or not. If the verification of the authorization information is not passed, the query request is terminated. If the authorization information passes the verification, inquiring the tax data of the taxpayer in the tax data assets, and processing the corresponding information according to the form of the data message. And calling an intelligent contract stored in the tax data uplink on the block chain, linking the data uplink and acquiring the storage address of the data on the chain.

Preferably, the request for inquiring the taxpayer tax information comprises the data asset item and the taxpayer identity information; wherein, the data asset item takes one or more items of column names, filtering condition expressions or column filtering values in the data asset table as filtering conditions. Specifically, the data asset items are items included in the data assets, and the taxpayer identity information is a default query condition.

Preferably, the tax bureau checks whether the scene party has acquired the authorization information of the taxpayer, if so, the tax data of the taxpayer is inquired, and if not, the inquiry is finished by feeding back to the scene party.

Preferably, the tax bureau generates a tax data message according to the inquired tax data of the taxpayer, and calls a data chaining intelligent contract to store the tax data message to the block chain; and the tax bureau generates a corresponding data uplink address according to the tax data message in the block chain and feeds back the data uplink address to the scene side. The data uplink address is a hash chain.

Specifically, the tax data message comprises a message header and a message main body; the message header comprises a scene party identifier, a data asset identifier, a transaction serial number and transaction time information; the message body comprises taxpayer identification number, authorization protocol and filtering condition information.

In the request data message, the header may be represented by HEAD and the BODY may be represented by BODY. The header HEAD may include, as request summary information, a scenario identifier age _ ID, a DATA asset identifier DATA _ ID, a transaction flow number TRAN _ SEQ, and a transaction TIME TRAN _ TIME. The message BODY is used as the access condition information and may include a taxpayer identification number NSRSBH, an authorization protocol book number controlatct _ SEQ, and filtering condition information FILTERS. The filtering condition information FILTERS comprises query filtering condition information of 1 to N data ASSETS, and the filtering condition information of each data asset comprises asset identification node ASSETS _ ID and node information in the query condition node FILTER. Wherein, the FILTER query condition node comprises a plurality of conditions of 1 to N lines. And the connection of the relation of 'and' is adopted between each condition. The composition of each condition consists of one or more of a COLUMN NAME COLUMN _ NAME, a filter condition expression identification expressson _ ID, and a COLUMN filter VALUE COLUMN _ VALUE. In addition, simple mathematical operators may also be added to the filtering conditional expression, such as equal to, greater than or equal to, less than or equal to, not equal to, within a certain interval, not within a certain interval, within an interval of enumerated values, not within an interval of enumerated values, and so forth.

In one embodiment, the above set of codes may be applied as a data query request message. The group of codes is a data message in a JSON format.

In another embodiment, the message includes two parts, HEAD and BODY. The HEAD is summary information including a scenario party identification age _ ID, a DATA asset identification DATA _ ID, a transaction flow number TRAN _ SEQ, and a transaction TIME TRAN _ TIME. And the value of the transaction serial number TRAN _ SEQ is the transaction serial number requested by the scene side system. BODY is tax DATA information with DATA information content of the taxpayer, 1 to N asset DATA information are contained under the DATAS node, and each asset DATA information is composed of an asset identification node ASSETS _ ID and a DATA node DATA. Wherein the ASSETS _ ID is used for representing the tax DATA category, and the DATA comprises 1 to N rows of DATA, and the structure of each row of DATA is the same as that of the DATA item contained in the asset. The data message in the JSON format is as follows:

preferably, after the scene party acquires the data uplink address sent by the tax bureau, the scene party queries the tax data in the block chain according to the data uplink address to acquire the tax data.

The invention relates to a tax data service system adopting a block chain, which comprises a block chain supporting module, an intelligent contract module and an application module.

And the block chain supporting module is used for providing basic technical support for the tax bureau, the scene party and the taxpayer using end so as to realize tax data service among the tax bureau, the scene party and the taxpayer.

Preferably, the blockchain support module provides basic technologies such as P2P network, consensus algorithm, distributed ledger, encryption technology, data persistence storage on the chain, and the like.

And the intelligent contract module is used for signing an authorization protocol, publishing a data asset directory, managing scene party information and accessing tax data based on the block chain support module.

Preferably, the intelligent contract module comprises a taxpayer authorization agreement signing contract, a tax data uplink storage contract, a tax data inquiry contract, a tax data asset service platform catalog management contract and a scenario party information management contract.

The intelligent contract is a business logic and algorithm which is established on a block chain and is realized by using a block chain script language, and an intelligent contract module of the invention comprises functions of taxpayer authorization agreement signing, tax data uplink storage, tax data inquiry, tax data asset service platform directory management, scene side information management and the like.

And the application module comprises a tax bureau, a scene party and a taxpayer using end and is used for realizing the related functions of the tax data service.

Preferably, the application module comprises a tax bureau, a scene party and a taxpayer using end; the tax bureau user terminal is used for maintaining scene party information, data assets and development manuals, approving and managing scene party application, scene party information change, scene party access logout and scene party access permission, authorizing taxpayer information query and query interface logs and data asset open statistical information; the scene party using end is used for opening and logging in the scene party account, changing scene party information, downloading a development manual and managing products and keys; the taxpayer using end is used for submitting an access request and a tax information request of the taxpayer, inquiring authorized assets and authorized records and submitting confirmation authorization.

The tax bureau user terminal can provide the functions of scene party management, system operation analysis and the like of the system. The server functions of the system mainly include the following categories:

1. the access request for the tax bureau to the scenic party authority provides permission for approval. Specifically, when an organization of a scene side uploads an accessory when opening an account, a tax bureau can open the data of an examining and approving function auditing organization on the account of the organization, and the organization can log in a block chain tax data asset platform after the examining and approving is passed.

2. The method is used for the tax bureau to examine and approve the logout application of the scene side. The mechanism of the scene side can submit a logout application when logging out the account, the tax bureau can log out the application at the approval mechanism with the function of auditing and approving the mechanism account logout, and the mechanism can not log in the block chain tax data asset platform through the account after the approval is passed.

3. The method is used for maintaining the basic information of each scene side mechanism by the tax bureau after each scene side mechanism and the tax bureau sign an agreement. The basic information includes the organization type, organization name, organization code, login name, i.e. authorization code, protocol validity period start and end, access IP and the like of the scene party.

4. The method is used for uploading or deleting the development manual by the tax bureau. After the account is opened by the scene side organization, the document uploaded by the tax bureau can be viewed and downloaded through the downloading function of the development manual.

5. The system is used for approving the organization information change application from the scene side.

6. The system is used for carrying out admission examination and approval on the product information. And the tax staff applies for the product data of the approval mechanism through the product information approval function.

7. For maintaining data assets open to the tax office. The service items opened by the tax administration to the outside and the data fields opened by each service may be maintained.

8. For querying product information. Product information maintained by the scene side organization can be viewed.

9. For viewing data open by tax asset dimension.

10. For authorization information queries. The taxpayer's authorization record may be queried.

11. For querying the interface call log. The condition that each mechanism calls the tax bureau interface can be inquired through the interface call log inquiry function.

12. For managing the scene side mechanism access interface. The logical layer management can be performed on the access interface of the mechanism on the scene side. The method comprises the steps of designing an interface list of a tax bureau database, maintaining an open interface list of the tax bureau, maintaining an interface ID, and describing and standardizing an interface. The tax office database design mechanism accesses the interface list, maintains the interface ID accessible by the mechanism, the link times limit cycle, the link times and the mechanism access interface state. The interface state may be a disabled state or an enabled state. The interface deactivation is divided into the following three scenarios: and manually deactivating the interface, and automatically deactivating the interface when the protocol time in the agency information maintained by the tax bureau expires. When the interface is identified to be in a deactivation scene, the scene side mechanism can log out the account number of the tax bureau and deactivate the interface.

The using end of the scene side also comprises the following functions:

1. and logging in and opening the mechanism account of the scene party. The method can be used for signing an agreement between each scene party organization and a tax bureau and opening an account after obtaining a login name, namely an authorization code.

2. And downloading a development manual. The method can be used for downloading the development manual provided by the tax bureau after the account is successfully opened by the scene side organization. The scene side mechanism can start interface development work according to a development manual to realize information interaction with the tax bureau.

3. For altering the information. The tax authority approval method can be used for changing the information of the organization, and the party needing to approve the tax authority can take effect after part of the information is changed.

4. For managing the product. The method can be used for a scene side mechanism to manage products through product management functions, and comprises adding products, modifying products and putting products off shelves.

5. Keys may be managed. And the key distributed to the organization by the platform is checked after the organization successfully resides in the platform.

The taxpayer using end also comprises the following functions:

1. the method is used for opening the block chain tax data service function for the enterprise or the personal taxpayer, and generating a public key and a private key for the enterprise or the personal taxpayer, and is used for subsequent authorized access of tax data assets and circulation operation based on the block chain.

2. The method is used for the taxpayer to check the tax data asset information used by the authorized scene party.

3. The tax payer is used for viewing the authorization history of the tax payer.

4. The method is used for accessing and authorizing tax data information of the taxpayer for the scene party.

Compared with the prior art, the method and the system for the tax data service by adopting the block chain have the advantages that the tax data service method and the system can adopt a mode that a tax bureau audits and permits access to a scene party and a taxpayer authorizes the scene party to access the tax data, and provide functions of sharing, transmitting, verifying, using and the like of the tax data based on the characteristics of distributed accounts distributed with block chain data, such as safety, credibility, difficulty in tampering and global consistency distribution. The invention can effectively solve the problem that the taxpayer data is difficult to self-certify and the problems that the taxpayer data is difficult to obtain and verify in a scene party, thereby fully exerting the value of the tax data as an important production element.

The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.

Claims

1. A tax data service method adopting block chains is characterized in that:

step 1, based on the application of a scene party, a tax bureau conducts auditing and provides access permission for the scene party based on the auditing;

step 2, acquiring a tax data access authorization request based on a scene party, and signing an authorization protocol by a taxpayer through a block chain to provide data access authorization for the scene party;

2. A method for tax data service using block chaining as claimed in claim 1, wherein said step 1 further comprises:

the scene party uploads the account opening application and the related application document to a tax data service system adopting a block chain;

and the tax bureau conducts auditing through the tax data service system adopting the block chain, opens an account number for a scene party in the tax data service system adopting the block chain based on an auditing result and issues a private key.

3. A method for tax data service using block chaining as claimed in claim 1, wherein said step 2 further comprises:

and the taxpayer sends the taxpayer access request to the scene party through one of mobile application, WeChat applet, Web page or two-dimensional code modes.

4. A method for tax data service using block chains according to claim 3, wherein said step 2 further comprises:

the taxpayer access request comprises the mobile phone number and the face information of the taxpayer;

after the scene party identifies the taxpayer access request, authorization content informing information is provided for the taxpayer;

and the taxpayer identifies the authorization content informing information, uploads an authorization protocol and confirms authorization.

5. A method for tax data service using block chains according to claim 4, wherein said step 2 further comprises:

the taxpayer confirms authorization as an enterprise user or an individual user.

6. A method for tax data service using block chaining as claimed in claim 1, wherein said step 3 further comprises:

the scene party sends a request for inquiring tax information of the taxpayer to the scene party;

the tax bureau checks taxpayer authorization information based on the request of inquiring the tax information of the scene party, inquires the tax data of the taxpayer, uploads the tax data to a block chain and generates a data uplink address;

after receiving the data uplink address, the scene side inquires corresponding tax data from the block chain based on the data uplink address;

the taxpayer tax information request comprises the data asset item and the taxpayer identity information, wherein the data asset item takes one or more items of column names, filtering condition expressions or column filtering values in a data asset table as filtering conditions.

7. A method for tax data services according to claim 6, wherein said step 3 further comprises:

the tax bureau checks the taxpayer authorization information, inquires the tax data of the taxpayer if the scene party obtains the taxpayer authorization, and feeds back the inquiry end to the scene party if the scene party does not obtain the taxpayer authorization.

8. A method for tax data services according to claim 7, wherein said step 3 further comprises:

the tax bureau generates a tax data message according to the inquired tax data of the taxpayer, and calls a tax data chaining contract to store the tax data message to a block chain;

the tax data uplink contract feeds back a data uplink address to the tax bureau, and the tax bureau feeds back the data uplink address to the scene party;

the tax data message comprises a message header and a message main body, the message header comprises a scene party identifier, a data asset identifier, a transaction flow number and transaction time information, and the message main body comprises a taxpayer identification number, an authorization agreement number and tax data information inquired of the taxpayer.

9. A method for tax data services according to claim 8, wherein said step 3 further comprises:

and after the scene party acquires the data uplink address sent by the tax bureau, inquiring the tax data in the block chain according to the data uplink address to acquire the tax data.

10. The utility model provides an adopt tax data service system of block chain, includes block chain support module, intelligent contract module and application module, its characterized in that:

the block chain supporting module is used for providing basic technical support for a tax bureau, a scene party and a taxpayer using end so as to realize the storage and transmission of tax data among the tax bureau, the scene party and the taxpayer;

the intelligent contract module is used for signing an authorization protocol, issuing a data asset directory, managing scene party information and accessing tax data based on the block chain support module;

the application module comprises a tax bureau, a scene party and a taxpayer using end and is used for realizing related functions of tax data service;

the block chain support module provides basic technologies such as a P2P network, a consensus algorithm, a distributed ledger, an encryption technology, and data persistence storage on a chain;

the intelligent contract module comprises a taxpayer authorization protocol signing contract, a tax data chaining storage contract, a tax data inquiry contract, a tax data asset service platform directory management contract and a scene party information management contract;

the application module comprises a tax bureau, a scene party and a taxpayer using end, wherein the tax bureau using end is used for maintaining scene party information, data assets and development manuals, approving and managing scene party application, scene party information change, scene party access logout and scene party access permission, authorized taxpayer information query and query interface logs and data asset open statistical information, the scene party using end is used for opening and logging in the scene party account, changing scene party information, downloading the development manuals and managing products and keys, and the taxpayer using end is used for submitting an access request and a tax information request of the taxpayer, querying authorized assets and authorized records and submitting confirmation authorization.