CN113706283B - Double-chain retrieval and tracing method based on real estate transaction - Google Patents
Double-chain retrieval and tracing method based on real estate transaction Download PDFInfo
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- CN113706283B CN113706283B CN202111261882.3A CN202111261882A CN113706283B CN 113706283 B CN113706283 B CN 113706283B CN 202111261882 A CN202111261882 A CN 202111261882A CN 113706283 B CN113706283 B CN 113706283B
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Abstract
The invention discloses a double-chain retrieval and tracing method based on real estate transaction, which relates to the technical field of real estate transaction, and promotes cross-department communication and intercommunication of real estate tax data through cooperation of cross-chain data of a government affair chain and a tax affair chain, reduces tax process risks and comprehensively improves quality and efficiency of real estate tax collection and management. The block chain technology is deeply applied to the whole flow link of the real estate transaction life cycle, so that the real estate transaction processing time is greatly shortened, and the operator environment is obviously improved; by selecting the upper chain of the pain point service closely related to the rights and interests of taxpayers for different real estate transaction service scenes and taking the chain crossing technology of the block chain as support, the actual problem of real estate transaction levy is solved, and the requirements of real-time information communication, traceability of the process and data tamper resistance are met; the real estate transaction assessment and management quality is further promoted to be improved by combining advanced informatization technical means, and therefore innovation of working means, modes and concepts of real estate transaction assessment and management is promoted.
Description
Technical Field
The invention belongs to the technical field of real estate transaction, and particularly relates to a double-chain retrieval and tracing method based on real estate transaction.
Background
The method has the advantages that tax handling and registration information sharing of real estate transactions are realized by exploring and applying block chains, one-window acceptance and parallel handling are facilitated to be deeply promoted, and the method has important significance for compressing real estate registration handling time and optimizing tax operator environment;
for a regional city which does not adopt a traditional block chain technology or does not aggregate a government integrated platform, a tax chain accessed to a national tax administration adopts an API (application programming interface) interface mode, an SDK (software development kit) mode or a service node mode; the traditional access mode has the defects that the real estate transaction cannot be completely traced before accessing the tax chain of the tax administration, namely, data under the chain cannot be completely traced, and the credibility of a data source is difficult to guarantee, so that a double-chain retrieval and tracing method based on the real estate transaction is provided.
Disclosure of Invention
The invention aims to provide a double-chain retrieval and tracing method based on real estate transaction.
The purpose of the invention can be realized by the following technical scheme: the double-chain retrieval and tracing method based on real estate transaction comprises the following steps:
the method comprises the following steps: building a government affair chain and a tax chain, building a big data center in the government affair chain, and building a tax unit in the tax chain;
step two: setting a chaining requirement according to the tax real estate specification and requirement, and auditing the chaining data according to the chaining requirement;
step three: performing real estate transaction cross-chain data mutual trust definition, and determining a real estate transaction cross-chain business process;
step four: establishing double-chain query and retrieval.
Furthermore, the government affair chain comprises a government affair unit, a government affair user side and an authentication end, a big data center is established in the government affair chain, and the government affair chain is in communication connection with the government affair unit, the government affair user side, the authentication end and the big data center.
Further, the work process of the government affair chain comprises the following steps: the method comprises the steps of collecting government affair data, authorizing and opening data collection permission by a government affair unit or a corresponding government affair user side, then obtaining the government affair data of the government affair user side or the government affair unit, and uploading the obtained government affair data to a big data center; determining the chaining requirement of the government affair chain according to the tax real estate specification and requirement, and auditing the chained data; establishing a bidirectional identification identity mapping relation between a government affair chain and a tax affair chain, and establishing a digital identity mutual-recognition and mutual-trust mechanism of a cross-chain government affair department; and for the government affair data of the government affair unit, decrypting the government affair data through the tax node on the tax chain, and performing data intercommunication interaction.
Further, the establishment process of the digital identity mutual-authentication mutual-trust mechanism comprises the following steps: marking the government affair units and the government affair user sides on the government affair chain, and respectively endowing the government affair units and the government affair user sides with identity marks; and generating corresponding digital identity information according to the identity mapping, sending the digital identity information to a tax chain, generating a digital identity information set, and establishing a feedback mechanism.
Further, the process of decrypting the government affair data of the government affair unit by the tax node comprises the following steps: marking a government affair unit corresponding to the government affair data, and acquiring digital identity information of the government affair unit; sending the acquired digital identity information of the government affair unit to a digital identity set for verification; after the verification is successful, generating authorization information, sending the authorization information to the government affair unit through a feedback mechanism, and after the government affair unit finishes the authorization, finishing the decryption of government affair data; and acquiring tax data in the decrypted government affair data, and uploading the tax data to a tax unit.
Further, the process of mutually trusted definition of the real estate transaction cross-chain data comprises: combing real estate transaction application scenes and defining transverse categories; combing the real estate transaction business process, and defining a longitudinal process; setting double-chain interaction requirements; real estate transaction business constraints are set.
Further, the double-strand interaction requirement includes: the uplink process to all government data needs to be covered; if the service change or the withdrawal backspace exists, the modification chain interface is involved; for the query traceability aspect, the latest circulation state and the vertical flow of the service are queried through the service number.
Further, the process of setting real estate transaction business constraints comprises: business type constants in interfaces of all tax chains are agreed according to the transverse category; the business non-modifiable content (YWBKXGNR) fields in the interfaces of all tax chains are fixed and unchanged according to a 'longitudinal flow'; and uniformly packaging the service modifiable content (YWKXGNR) fields in all tax chain interfaces into a long character string by JSON character strings according to the service data fields of the real estate service of the government chain, and using the long character string as the Value of the service modifiable content (YWKXGNR) field.
The invention has the beneficial effects that: through the cooperation of the government affair chain and the cross-chain data of the tax chain, the cross-department communication and intercommunication of the real estate tax data are promoted, the tax process risk is reduced, and the quality and effectiveness of real estate tax collection and management are comprehensively improved. The block chain technology is deeply applied to the whole flow link of the real estate transaction life cycle, so that the real estate transaction processing time is greatly shortened, and the operator environment is obviously improved; aiming at different real estate transaction service scenes, a pain point service chaining related to taxpayer rights and interests is selected, a block chain cross-chain technology is used as a support, the actual problem of real estate transaction levying and managing is solved, and the requirements of real-time information communication, process traceability and data tamper resistance are met; the real estate transaction assessment and management quality is further promoted to be improved by combining advanced informatization technical means, and therefore innovation of working means, modes and concepts of real estate transaction assessment and management is promoted.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a functional block diagram of a double-chain search and source-tracing method based on real estate transactions.
Detailed Description
For a traditional regional city which does not adopt a government affair integrated platform of a block chain technology or does not aggregate the government affair integrated platform, the tax chain accessed to the tax unit adopts an API interface mode, an SDK mode and a service node mode; the method comprises the following steps that an API (application program interface) mode is used for carrying out data interaction with a tax chain of a tax administration in an accessed regional city through an API in a JSON (JavaScript object notation) format; the SDK mode is that the tax administration provides the accessed SDK packet for access, and the service node mode is that the account book and the node which are added into the tax administration in the province and city to be accessed carry out data transmission and synchronization; the disadvantage of the above access method is that the real estate transaction cannot be completely traced before accessing the tax chain of the tax administration, i.e. the data under the chain cannot be completely traced, and the credibility of the data source is difficult to guarantee. The key point of the invention is to construct a block chain-based government affair integrated platform government affair chain and ensure that the down-chain real estate transaction data before accessing to the tax chain is on another credible 'government affair chain'.
As shown in fig. 1, the double-chain retrieval and tracing method based on real estate transaction includes the following steps:
the method comprises the following steps: building a government affair chain and a tax chain, building a big data center in the government affair chain, and building a tax unit in the tax chain;
step two: setting a chaining requirement according to the tax real estate specification and requirement, and auditing the chaining data according to the chaining requirement;
step three: performing real estate transaction cross-chain data mutual trust definition, and determining a real estate transaction cross-chain business process;
step four: establishing double-chain query and retrieval.
The government affair chain comprises a government affair unit, a government affair user side and an authentication end, a big data center is established in the government affair chain, the government affair chain is in communication connection with the government affair unit, the government affair user side, the authentication end and the big data center, and the specific working process of the government affair chain comprises the following steps:
step Z1: the method comprises the steps that government affair data are collected, authorized by a government affair unit or a corresponding government affair user side, data collection permission is opened, then the government affair data of the government affair user side or the government affair unit are obtained, and the obtained government affair data are uploaded to a big data center, further, in the specific implementation process, the government affair data of the government affair user side are authorized by the government affair user side before being obtained, the government affair data of the government affair user side are obtained after being authorized by the government affair user side and uploaded to the big data center, and authorization records are generated and stored after the government affair user side is authorized; and the government affair data of the government affair unit is encrypted firstly, then the encrypted government affair data is obtained, and the government affair data is uploaded to the big data center.
Step Z2: determining the chaining requirement of the government affair chain according to the tax real estate specification and requirement, and auditing the chained data; it is further noted that, in the specific implementation process, the government affair data is audited through the authentication end, an intelligent contract model is established according to tax real estate specifications and requirements, the obtained government affair data is uploaded into the intelligent contract model for auditing, an intelligent auditing result is generated, the intelligent auditing result is sent to the authentication end, and the intelligent auditing result is uploaded to the block chain after the authentication end passes the auditing; the intelligent auditing result comprises an intelligent contract model characteristic value and an intelligent contract model parameter; the intelligent contract model characteristic value represents the degree of the government affair data meeting the tax real estate specification and requirement, and the higher the intelligent contract model characteristic value is, the more the intelligent contract model characteristic value meets the tax real estate specification and requirement; the intelligent contract model parameters are specific government affair contents and corresponding parameters in the government affair data.
Step Z3: establishing a bidirectional identification identity mapping relation between a government affair chain and a tax affair chain, and establishing a digital identity mutual-recognition and mutual-trust mechanism of a cross-chain government affair department; it should be further noted that, in the specific implementation process, the establishment process of the digital identity mutual-authentication and mutual-trust mechanism specifically includes the following steps:
step Z31: marking the government affair units and the government affair user sides on the government affair chain, and respectively endowing the government affair units and the government affair user sides with identity marks, wherein the identity marks have uniqueness;
step Z32: generating corresponding digital identity information according to the identity mapping, and sending the digital identity information to a tax chain to generate a digital identity information set;
step Z33: a feedback mechanism is established for the set of digital identity information.
Step Z4: and for the government affair data of the government affair unit, decrypting the government affair data through the tax node on the tax chain, and performing data intercommunication interaction through an API interface with double-chain convention.
The decryption process of the government affair data of the government affair unit by the tax node specifically comprises the following steps:
step M1: marking a government affair unit corresponding to the government affair data, and acquiring digital identity information of the government affair unit;
step M2: sending the acquired digital identity information of the government affair unit to a digital identity set for verification; when the digital identity information set comprises the digital identity information of the government affair unit, the verification is successful;
step M3: after the verification is successful, generating authorization information, sending the authorization information to the government affair unit through a feedback mechanism, and after the government affair unit finishes the authorization, finishing the decryption of government affair data;
step M4: and acquiring tax data in the decrypted government affair data, and uploading the tax data to a tax unit.
The specific process of mutually trusted definition of real estate transaction cross-chain data comprises the following steps:
step B1: combing real estate transaction application scenes and defining transverse categories; the horizontal category comprises 6 business scenes of incremental rooms (personal residence, personal non-residence and unit) and stock rooms (personal residence, personal non-residence and unit).
Step B2: combing the real estate transaction business process, and defining a longitudinal process; it should be further noted that, in the specific implementation process, each service type has a corresponding flow process, including data information collection, tax payment information, declaration information, and delivery information (e-tax receipt + e-invoice), and each service type has differences in flow details, and these service flow processes are called as vertical flows.
Step B3: setting double-chain interaction requirements, wherein the double-chain interaction requirements comprise:
(1) the uplink process to all government data needs to be covered;
(2) if there is a service change or rollback withdrawal, etc., in the middle, modification of the chain interface is involved
(3) For the query traceability aspect, the latest circulation state of the service needs to be queried through the service number, and the longitudinal flow of the service also needs to be queried; it should be further noted that, in the implementation process, the tax chain provides an interface for querying according to the starting height and the number of blocks of the block chain, and the tax chain can actively push the government chain and provide a message subscription interface.
Step B4: the real estate transaction business constraint is set, and the specific process comprises the following steps:
step B41: the business type constants in the interfaces of all tax chains are agreed according to the 'horizontal category':
step B42: taking a business key (YWZJ) field in a tax chain interface as a corresponding relation according to a government chain integrated platform business handling list ID (YYYYMMDDXXXXXX [ 5 self-increment sequence numbers are added every year, month and day) ], wherein the government integrated platform business handling list ID in a longitudinal flow of the same business type is kept unchanged;
step B43: the business non-modifiable content (YWBKXGNR) field in all tax chain interfaces is fixed and unchanged according to the 'vertical flow', and the following table is used for:
step B44: and uniformly packaging the service modifiable content (YWKXGNR) fields in all tax chain interfaces into a long character string by JSON character strings according to the service data fields of the real estate service of the government chain, and using the long character string as the Value of the service modifiable content (YWKXGNR) field.
In the specific implementation process, two query modes are provided for data query and retrieval of two chains, namely a government affair chain and a tax affair chain:
the first method is as follows: and source query, namely retrieving state data circulated in the government affair chain according to the query condition of real estate transaction in the government affair chain visual management platform.
The second method comprises the following steps: chain inquiry, namely on a government affair chain visual management platform, according to the inquiry condition of real estate transaction, not only the state data circulated in the government affair chain needs to be searched, but also the state data circulated in the tax chain needs to be searched, and the double-chain data full-scale inquiry is realized.
Through the cooperation of the government affair chain and the cross-chain data of the tax chain, the cross-department communication and intercommunication of the real estate tax data are promoted, the tax process risk is reduced, and the quality and effectiveness of real estate tax collection and management are comprehensively improved. The block chain technology is deeply applied to the whole flow link of the real estate transaction life cycle, so that the real estate transaction processing time is greatly shortened, and the operator environment is obviously improved; by selecting the upper chain of the pain point service closely related to the rights and interests of taxpayers for different real estate transaction service scenes and taking the chain crossing technology of the block chain as support, the actual problem of real estate transaction levy is solved, and the requirements of real-time information communication, traceability of the process and data tamper resistance are met; the real estate transaction assessment and management quality is further promoted to be improved by combining advanced informatization technical means, and therefore innovation of working means, modes and concepts of real estate transaction assessment and management is promoted.
In the embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and there may be other divisions when the actual implementation is performed; the modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the method of the embodiment.
Finally, it should be noted that the above examples are only intended to illustrate the technical process of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical process of the present invention without departing from the spirit and scope of the technical process of the present invention.
Claims (1)
1. The double-chain retrieval and tracing method based on real estate transaction is characterized by comprising the following steps of:
the method comprises the following steps: building a government affair chain and a tax chain, building a big data center in the government affair chain, and building a tax unit in the tax chain;
step two: setting a chaining requirement according to the tax real estate specification and requirement, and auditing the chaining data according to the chaining requirement;
step three: performing real estate transaction cross-chain data mutual trust definition, and determining a real estate transaction cross-chain business process;
step four: establishing double-chain query and retrieval;
the government affair chain comprises a government affair unit, a government affair user side and an authentication end, a big data center is established in the government affair chain, and the government affair chain is in communication connection with the government affair unit, the government affair user side, the authentication end and the big data center;
the work process of the government affair chain comprises the following steps: the method comprises the steps of collecting government affair data, authorizing and opening data collection permission by a government affair unit or a corresponding government affair user side, then obtaining the government affair data of the government affair user side or the government affair unit, and uploading the obtained government affair data to a big data center; determining the chaining requirement of the government affair chain according to the tax real estate specification and requirement, and auditing the chained data; establishing a bidirectional identification identity mapping relation between a government affair chain and a tax affair chain, and establishing a digital identity mutual-recognition and mutual-trust mechanism of a cross-chain government affair department; for the government affair data of the government affair unit, decrypting through the tax node on the tax chain, and performing data intercommunication interaction;
the establishment process of the digital identity mutual-authentication mutual-trust mechanism comprises the following steps: marking the government affair units and the government affair user sides on the government affair chain, and respectively endowing the government affair units and the government affair user sides with identity marks; generating corresponding digital identity information according to the identity mapping, sending the digital identity information to a tax chain, generating a digital identity information set, and establishing a feedback mechanism;
the decryption process of the government affair data of the government affair unit by the tax node comprises the following steps: marking a government affair unit corresponding to the government affair data, and acquiring digital identity information of the government affair unit; sending the acquired digital identity information of the government affair unit to a digital identity set for verification; after the verification is successful, generating authorization information, sending the authorization information to the government affair unit through a feedback mechanism, and after the government affair unit finishes the authorization, finishing the decryption of government affair data;
the process of mutually trusted definition of real estate transaction cross-chain data includes: combing real estate transaction application scenes and defining transverse categories; combing the real estate transaction business process, and defining a longitudinal process; setting double-chain interaction requirements; setting real estate transaction business constraints;
the double-chain interaction requirement comprises: the uplink process to all government data needs to be covered; if the service change or the withdrawal backspace exists, the modification chain interface is involved; for the query traceability aspect, the latest circulation state and the vertical flow of the service are queried through the service number;
the process of setting real estate transaction business constraints comprises: business type constants in interfaces of all tax chains are agreed according to the transverse category; the method comprises the following steps that the business non-modifiable content fields in the interfaces of all tax chains are fixed and unchanged according to a longitudinal flow; and uniformly packaging the service modifiable content fields in all tax chain interfaces into a long character string by JSON character strings according to the service data fields of the government chain real estate service, wherein the long character string is used as the Value of the service modifiable content fields.
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