CN109993647A - A kind of pay taxes credit investigation system and processing method based on block chain - Google Patents
A kind of pay taxes credit investigation system and processing method based on block chain Download PDFInfo
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Abstract
The invention belongs to tax system reference administrative skill fields, disclose a kind of pay taxes credit investigation system and processing method based on block chain, each organization data is run up on a unified block platform chain, and is integrated to all information；With specific common recognition algorithm, the typing credit data into block chain, and analytical calculation goes out individual credit score, forms a huge information aggregate；Open port constantly receives resource simultaneously, forms information network, makes each participant equality and mutual benefit；Tax platform is constructed, interspace file system is introduced, for uploading weight text information, the hash value of return and small data file of paying taxes is directly stored on block chain, are used for inside tax system and in reference alliance, while being buffered in spare traditional database.The present invention is based on the data sharing methods of block chain to make the member node in regional autonomy alliance while data sharing, and constrained each other, mutual supervision solves " information island " phenomenon.
Description
Technical field
The invention belongs to tax system reference administrative skill field more particularly to a kind of references of paying taxes based on block chain
System and processing method.
Background technique
Currently, the prior art commonly used in the trade is such that currently, division of the national taxation bureau to taxpaying credit rank
It is divided into A grades, B grades, C grades, D grades and five grades of M grade.The taxpaying credit rank of enterprise refers to that the tax authority carries out according to taxpayer
Row obligation to pay tax situation, the rank that taxpaying credit of the taxpayer in some cycles is evaluated.The tax authority can be according to keeping one's word
Excitation, the principle disciplined as a warning of breaking one's promise implement classified service and management to the taxpayer of different credit levels, but information data is single
Scarcity, the credit data that multidimensional can not be carried out to taxpayer is analyzed, so tax administration field is controlled in the integration of credit data
Reason is just particularly important.
Although information between government department can be by a fixed platform in government network intra-sharing, but still cannot be complete
It is shared by internet.Each commercial undertaking, especially bank, for the needs of protection customer privacy, information sharing is just more tired
It is difficult.Not homologous ray, heterogeneous networks, different enterprise information be difficult to and interconnect, cause credit resources can not rationally sufficiently
It flows and becomes numerous information islands in ground.The appearance of block chain becomes the effective way for solving this pain spot, based on going to center
The characteristics of change, data can not distort, this place block chain technology great revolution sweeping across financial transaction, energy reserves, Internet of Things,
It is no exception that medical resource such as puts in order at various industries and field, the credit checking industry.Consider from tax field, in " internet+sincerity
Mechanism " theory spreads to the today at family, and the informatization of current tax information management domain relies on Internet technology, and one
Directly with the technology development of network field, as an intercrossing subject, information management technique itself is by each neck
Made of the technological synthesis in domain.From the point of view of current technology application study trend, block chain technology is inherently led in tax administration
Domain is applied, and authenticity, accuracy and the autonomy of tracking and shared data is made to be greatly improved.
In conclusion problem of the existing technology is: each mechanism mutually can not sufficiently trust, and shared data just becomes
It is abnormal difficult, form serious information barrier.Although the information between government department can be by a fixed platform in government network
Intra-sharing, cannot be completely shared by internet；Each commercial undertaking, especially bank, for the need of protection customer privacy
It wants, information sharing is with regard to more difficult.
Solve the difficulty of above-mentioned technical problem:
Traditional data sharing mistrustful mutually in solution system can not be asked by the data-sharing scheme of centralization
Topic, and data all concentrate on the third-party institution, once the risk under attack for there is data and being deleted or modifying.Cause
This main difficulty for solving the drawbacks of traditional data secret sharing is to solve the trust problem of data sharing side and the peace of data
Full problem.Present invention combination block chain technology solves these problems, rivest, shamir, adelman (Hash in block chain technology
Algorithm and Digital Signature Algorithm) etc. basic technologies make it have the characteristics that trust and decentralization, can change current traditional
Centralization mechanism and data be easy the problem of distorting, within the system by all data accumulations to a unified block
On platform chain, and all information are integrated, ultimately form a huge information aggregate, realize distributing rationally for resource,
And the mutual equality of node exists, and collective safeguards a reliable and secure database.
Solve the meaning of above-mentioned technical problem:
The present invention mainly studies credit private data guard and secret sharing based on block chain.Utilize point of block chain
The characteristic that cloth framework and block chain account book are disclosed, can not be distorted records credit on account book and believes this based on block chain
Information storage and shared system efficiently solve the problems, such as the safety problem of users to trust and data, become distorting for data almost
It at impossible thing, while solving the problems, such as the storage of credit data fragmentation and information barrier, realizes credit information
Across mechanism safety is shared, effectively eliminates problem of detached island of information, and have efficient, safety compared to existing document storage system
The features such as.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of pay taxes credit investigation system and place based on block chain
Reason method.
The invention is realized in this way a kind of processing method of the reference of paying taxes based on block chain, described to be based on block chain
The processing method of reference of paying taxes each organization data is run up on a unified block platform chain, and to all information into
Row integration；With specific common recognition algorithm, the typing credit data into block chain, and analytical calculation goes out individual credit score, finally
A huge information aggregate is formed, realizes distributing rationally for resource；Open port constantly receives more resources, shape simultaneously
At information network that is independent, not manipulated by any individual, make each participant equality and mutual benefit；Tax platform is constructed, star is introduced
The hash value of return and small data file of paying taxes are directly stored in area for uploading weight text information by border file system
On block chain, it is used for inside tax system and in reference alliance, while being buffered in spare traditional database.
Further, the processing method of the reference of paying taxes based on block chain is calculated using the Byzantine failure tolerance based on appointment
Block chain network participant behavior is utilized in method, quantifies using credit as an important factor for appointment.
Further, there are Three roles for the Byzantine failure tolerance algorithm based on appointment, are respectively: candidate, book keeping operation person
And losing candidate；
Candidate: having book keeping operation contention power, the collage-credit data amount ginseng provided by itself in this transaction for credit investigation system
With ranking, ranking is referred to as candidate in preceding 1/3 member, carries out book keeping operation power contention, and ranking is not directly becoming preceding 1/3 and falls
The person of choosing；
Book keeping operation person: obtaining the candidate of book keeping operation power, the information in this time be packaged, and generates Ma Erke tree, meter
Calculation includes the block head of previous piece of cryptographic Hash, timestamp, Ma Erke tree root field, and intact block is broadcast to block link network
Other nodes in network；
Losing candidate: verifying the transaction message in network, is divided into grammer verifying and semantic verification；Each transaction
It outputs and inputs, the input of transaction is made of other outputs traded；Losing candidate turns the transaction being verified
Hair, unsanctioned transaction are then directly abandoned.
Further, candidate has by appointment process generation book keeping operation person in the Byzantine failure tolerance algorithm based on appointment
Body appoint process include:
A) it is randomly assigned to number for n node, since 0, the last one node is n-1, is determined by following algorithm
Appoint address number: the block height currently known together is h, then p=(h+r) modn, and wherein the value range of p is 0≤p < n, r
For greenwich time expressed in seconds；
B) all nodes for wanting to carry out book keeping operation power contention will become to appointing node to send transaction message by sequence
Both candidate nodes；New information belongs to specific type transaction, will not be counted into block chain.Do not make in message body comprising node itself
Total value is exported with transaction, which can be verified by all nodes by block chain；
C) abft algorithm divides time into the timeslice of different length, is generated newly per a piece of by unique book keeping operation person
Block.It is as follows that book keeping operation person generates process: for m candidate node distribution number, from 0 to m-1, number is (h+r) modm
Candidate, which will obtain book keeping operation power, becomes book keeping operation person.
Further, the common recognition process of the Byzantine failure tolerance algorithm based on appointment includes:
A) arbitrary node broadcasts transaction data to the whole network, and encloses the signature of sender；
B) all common recognition nodes independently monitor the transaction data of the whole network, and are recorded in memory；
C) book keeping operation person by time t (assuming that system regulation it is every by time t generate a block) after, transmission <
PrepareRequest, s, h, p, block,<blohash>>；Wherein s is the signature of block producer, and block is producer
It is packaged newly-generated block of trading on last stage, blohash is the cryptographic Hash of the block.
D) losing candidate i first verifies that the validity of signature after receiving motion, verifies later to the transaction in block,
Being verified posterior nodal point will use the private key of oneself to sign the build of the block, feedback ballot message be generated, to block system
The person of making sends.It sends<PrepareResponse, h, i, bh,<bhs>>；Bh indicates that block head, bhs indicate the node to bh's
Private key signature.
E) arbitrary node after receiving at least n/2 PrepareResponse, reach and issue complete block by common recognition；
Otherwise previous step is re-started；
F) arbitrary node is after receiving intact block, by comprising transaction deleted from memory, and it is total to start next round
Know；
Further, the transaction verification rule of the Byzantine failure tolerance algorithm based on appointment includes:
A) format judges, whether this transaction message meets writing composition rule, includes defined all necessary fields；
B) content judges, the input and output of transaction are judged, are exported according to unused transaction to determine whether can be complete
At the transaction；
C) there is judgement, whether which is already present among block chain；
D) licit traffic can be packaged into block by book keeping operation person, and illegal transaction will be abandoned directly.
Another object of the present invention is to provide a kind of processing methods of the reference of paying taxes described in realize based on block chain
Credit investigation system of paying taxes based on block chain, the credit investigation system of paying taxes based on block chain include:
Node permissions module determines that alliance's chain participant, the node not secured permission can not coalize chain；
Administrator right module, administrator have the permission for managing other participants, and this management does not include directly from connection
Deletion of node in alliance's chain；
Privacy authority module, each participant of alliance's chain have this permission, support private placement placing and private convention,
Determine the recipient of information.
Further, the credit investigation system of paying taxes based on block chain is built into B/S framework, and bottom block platform chain uses
Quorum。
Another object of the present invention is to provide a kind of processing methods of the reference of paying taxes described in application based on block chain
Tax system reference manages platform.
In conclusion advantages of the present invention and good effect are as follows: paying taxes based on block chain provided in an embodiment of the present invention
Alliance's chain structure mode that credit investigation system is developed based on Quorum platform, Quorum are points based on Ethereum
Cloth account book agreement has transaction/contract privacy and new common recognition mechanism and higher performance.It has perhaps Ethereum
The characteristic of more important improvement, the node licensing function having and support private placement placing make it be more suitable for building alliance's chain, simultaneously
POS/POW is not needed in a granted network, the common recognition mechanism for being more more suitable for alliance's chain can be provided.Quorum is supported
Private placement placing and private convention separate by public/private state and utilize Constellation, a kind of point-to-point encryption letter
Breath exchange, by private data directional transmissions to network participants.The node license of intelligent contract can be used simultaneously, it is ensured that only
There is known formula that network can be added.Work as taxpayer using acceleration mechanism is cached under record+chain on chain using B/S framework
Request is initiated, taxpayer's behavior will be recorded in real time by front end to block chain network, block chain network processing information will be returned later
It returns data information and is shown in front end.Meanwhile block chain network can constantly back up data buffer storage to database.When having received
Tax user inquires tax information again, directly will initiate inquiry request to database by front end, and then return to inquiry data.
In order to reduce carrying cost, weight text information is if desired uploaded such as taxpaying credit information and the great case of violation of law and then needs elder generation
Weight text information is uploaded into IPFS file system, the heavy text information Hash storage that IPFS is returned on block chain with spy
It binds the address for determining taxpayer.General query then directly obtains data from server later, when server is maliciously attacked
It hits, is then reacquired from block chain.Tax platform in such a way that centralization combines, makes each portion of the tax using decentralization
Door information symmetrical is transparent, while recording non-stop layer and having two kinds of distributed account books at center, and distributed account book is only obtained
The network node of license can have the ability of modification record account book.
The present invention proposes that each mechanism carries out the best of information sharing by alliance's chain building reference alliance, according to game theory
Scheme designs a kind of excitation and supervision system to maintain the order for sharing credit information between allied member, by each collage-credit data
Isolated island is together in series, and builds novel multidimensional reference model by being modified to traditional reference model, efficiently solves
Information island and problem of information asymmetry.The credit appraisal weight that the credit factor is traded as block chain in reference model
The factor can effectively solve the problems, such as that taxpayer continue caused credit score when small amount is paid taxes and rapidly rises, because primary
It pays taxes in behavior, tax believes that the factor is bigger, then the weight of credit appraisal is higher.When taxpayer attempt to be repeated in the short time it is small
Volume pay taxes brush credit score when, since time interval of paying taxes twice is extremely short, number again it is small, therefore tax letter the factor also can very little, accordingly
Ground, will be very little to the contribution of credit appraisal.Encryption technology and intelligent contract mechanism construction of the present invention using block chain
Tax platform records, verifies transaction, and the accurate recording of transaction record may be implemented, and data are accurately traced to the source.Effectively prevention and
Supervise the generation for non-obeying action of paying taxes.The data sharing method based on block chain saves the member in regional autonomy alliance
For point while data sharing, constrained each other, mutual supervision solves " information island " phenomenon；Pass through the autonomy of each node
It is effectively reduced management complexity；Distributed, more redundancy properties ensure that block chain, and there is no single point failure failures, even if single
Node failure, other nodes are unaffected, more more reliable than centralized system.
Detailed description of the invention
Fig. 1 is the credit investigation system structural schematic diagram of paying taxes provided in an embodiment of the present invention based on block chain；
In figure: 1, node permissions module；2, administrator right module；3, privacy authority module.
Fig. 2 is the processing method flow chart of the reference of paying taxes provided in an embodiment of the present invention based on block chain.
Fig. 3 is the common recognition algorithm of the credit investigation system alliance chain use of paying taxes provided in an embodiment of the present invention based on block chain
Flow chart.
Fig. 4 is the general architecture diagram of the Dapp based on Quorum platform provided in an embodiment of the present invention.
Fig. 5 is the credit investigation system architecture diagram of paying taxes provided in an embodiment of the present invention based on block chain.
Fig. 6 is the credit investigation system overall architecture design drawing of paying taxes provided in an embodiment of the present invention based on block chain.
Fig. 7 is the credit investigation system throughput graph of paying taxes provided in an embodiment of the present invention based on block chain.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Mutually can not sufficiently it trust for each mechanism of the prior art, shared data just becomes abnormal difficult, forms tight
The information barrier of weight.The present invention proposes that each mechanism carries out information sharing by alliance's chain building reference alliance, according to game theory
Preferred plan designs a kind of excitation and supervision system to maintain the order for sharing credit information between allied member, by each reference
Data silo is together in series, and builds novel multidimensional reference model by being modified to traditional reference model, effectively solves
It has determined information island and problem of information asymmetry.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, the credit investigation system of paying taxes provided in an embodiment of the present invention based on block chain includes node permissions module
1, administrator right module 2, privacy authority module 3.
Node permissions module 1 determines that alliance's chain participant, the node not secured permission can not coalize chain；
Administrator right module 2, administrator have manage other participants permission, it is this management do not include directly from
Deletion of node in alliance's chain；
Privacy authority module 3, each participant of alliance's chain have this permission, support private placement placing and private convention,
Determine the recipient of information.
Credit investigation system of paying taxes provided in an embodiment of the present invention based on block chain is built into B/S framework, and bottom block chain is flat
Platform uses Quorum.
Credit investigation system of paying taxes provided in an embodiment of the present invention based on block chain is for credit management platform, alliance's chain ginseng
Should decide through consultation with side needs information to be sharing；The recipient of shared loyalty information is all participants, is closed using the same intelligence
About.Tax system each department forms alliance's chain, and using classical pbft common recognition algorithm, tax platform building is at B/S framework, bottom
Block platform chain uses Quorum.For the tax administration platform, alliance's chain participant, which should be decided through consultation, needs information to be sharing.
The recipient of shared loyalty information is all participants, uses the same intelligent contract；More detailed information is deposited by private convention
Storage, decides recipient in its sole discretion.
Credit investigation system of paying taxes provided in an embodiment of the present invention based on block chain includes IPFS file system, block link network
Network, database server；When information request is initiated in front end, taxpayer's behavior will be recorded in real time by front end to block chain network,
The alliance's chain being made of system each department, tax portion is handled data according to certain common recognition algorithm, and by side chain with
Alliance's chain link of credit investigation system is got up, and realizes data sharing.Meanwhile block chain network can be constantly by data buffer storage to data
It is backed up in library.When assessment paid, user inquires tax information again, directly will initiate inquiry request to database by front end,
Then inquiry data are returned.In order to reduce carrying cost, weight text information, such as taxpaying credit information and great are if desired uploaded
The case of violation of law then needs that weight text information is first uploaded to IPFS file system, the IPFS heavy text information Hash returned is deposited
The address on block chain with specific taxpayer is stored up to bind.General query then directly obtains data from server later,
When server is attacked, then from the reacquisition of block chain.
As shown in Fig. 2, the processing method of the reference of paying taxes provided in an embodiment of the present invention based on block chain includes:
S201: each organization data being run up on a unified block platform chain, and is integrated to all information,
With specific common recognition algorithm, the typing credit data into block chain, and analytical calculation goes out individual credit score, ultimately forms one
A huge information aggregate, realizes distributing rationally for resource；
S202: while can constantly receive more resources to participate in this system with open port, formed it is independent,
Not by the information network of any personal manipulation, make each participant equality and mutual benefit；
S203: building tax platform introduces a kind of point-to-point distributed file system IPFS (interspace file system), uses
In uploading weight text information, the hash value of return and small data file of paying taxes are directly stored on block chain, can be used for
Inside tax system and in reference alliance, while being buffered in spare traditional database.
The construction method of credit investigation system of paying taxes provided in an embodiment of the present invention based on block chain includes:
The first step is established by the tax, industry and commerce, bank, customs, alliance's chain that public security is Major Members, designs common recognition mechanism
Algorithm implementation method are as follows:
1) during abft knows together algorithm, one co-exists in Three role, is respectively: candidate, book keeping operation person and losing candidate.Below
These three states will be described in detail respectively.
Candidate: there is book keeping operation contention power.The collage-credit data quantity provided by itself in this transaction for credit investigation system
Ranking is participated in, ranking is referred to as candidate in preceding 1/3 member, can carry out book keeping operation power contention, and ranking is not direct preceding 1/3
As losing candidate.
Book keeping operation person: the candidate of book keeping operation power is obtained.It is responsible for for the information in this time being packaged, generates Ma Erke
Tree calculates the block head comprising fields such as previous piece of cryptographic Hash, timestamp, Ma Erke tree roots, and intact block is broadcast to area
Other nodes in block chain network.
Losing candidate: being responsible for verifying the transaction message in network, is divided into grammer verifying and semantic verification.Each
Transaction is output and input, and the input of transaction is made of other outputs traded, that is to say, that any transaction is ok
It is verified by the record saved in block chain.Losing candidate is forwarded the transaction being verified, and unsanctioned transaction is then straight
It connects and abandons.
2) process is appointed, candidate generates book keeping operation person by appointment process in abft algorithm, specific to appoint process as follows:
A) it is randomly assigned to number for n node, since 0, the last one node is n-1, is determined by following algorithm
Appoint address number: assuming that the block height currently known together is h, then p=(h+r) modn, wherein the value range of p is 0≤p
< n, r are greenwich time expressed in seconds.
B) all nodes for wanting to carry out book keeping operation power contention will be to appointing node to send transaction message, according in message body
Unused transaction output total value (i.e. collage-credit data total amount, and the total value can pass through block by all nodes comprising node itself
Chain is verified) by sequence, preceding 1/2 node becomes both candidate nodes.The new information belongs to specific type transaction, will not be by
It is included in block chain.
C) abft algorithm divides time into the timeslice of different length, is generated newly per a piece of by unique book keeping operation person
Block.It is as follows that book keeping operation person generates process: for m candidate node distribution number, from 0 to m-1, number is (h+r) modm
Candidate, which will obtain book keeping operation power, becomes book keeping operation person.
3) common recognition process
A) arbitrary node broadcasts transaction data to the whole network, and encloses the signature of sender；
B) all common recognition nodes independently monitor the transaction data of the whole network, and are recorded in memory；
C) book keeping operation person by time t (assuming that system regulation it is every by time t generate a block) after, transmission <
PrepareRequest, s, h, p, block,<blohash>>；Wherein s is the signature of block producer, and block is producer
It is packaged newly-generated block of trading on last stage, blohash is the cryptographic Hash of the block.
D) losing candidate i first verifies that the validity of signature after receiving motion, verifies later to the transaction in block,
Being verified posterior nodal point will use the private key of oneself to sign the build of the block, feedback ballot message be generated, to block system
The person of making sends.It sends<PrepareResponse, h, i, bh,<bhs>>；Bh indicates that block head, bhs indicate the node to bh's
Private key signature.
E) arbitrary node after receiving at least n/2 PrepareResponse, reach and issue complete block by common recognition；
Otherwise previous step is re-started；
F) arbitrary node is after receiving intact block, by comprising transaction deleted from memory, and it is total to start next round
Know；
4) transaction verification
Transaction verification rule in block chain network is as follows:
A) format judges, whether this transaction message meets writing composition rule, includes defined all necessary fields.
B) content judge, primarily with respect to transaction input and output judge, according to unused transaction export to determine whether
It can complete the transaction.
C) there is judgement, whether which is already present among block chain.
D) licit traffic can be packaged into block by book keeping operation person.Illegal transaction will be abandoned directly.
Second step, the design of credit score computational algorithm, implementation method:
Credit score mode is used to individual in reference platform, " the credit factor " is introduced and traditional reference model is repaired
Just, by taking tax credit as an example, it is indicated in transaction, and taxable amount is multiplied by between the time that this pays taxes the time and last time pays taxes
Every.Reference on block chain is likely to be based only on direct data itself, i.e. transaction data.This is because the friendship of block chain
Easily band having time arrow, the marginal cost of Double Spending is no longer equal to zero, and is proportional to " the credit factor ".Here it will use
For weight model based on " the tax letter factor " for constructing credit system, weight model refers to that the resulting credit appraisal of user must be taken separately
The last credit value of user is obtained with the tax letter factor of the secondary transaction, model is as follows:
Wi=Ci·Di；
Ri∈{-1,0,1}；
i,Wi,Ci,Di∈(0,+∞)；
Wherein, RnRepresent the credit value score of user, RiUser's resulting credit value when trading for i-th, WiFor i-th
Tax when transaction believes the factor, CiAmount of money when trading for i-th, DiFor i-th trade the last exchange's accumulation of distance when
Between.Wherein key is RiProblems of value, this can from punctuality of paying taxes, pay taxes adequacy and consider, correct above-mentioned Ri
It can obtain:
Abbreviation can obtain:
Wherein,For that should pay taxes the time when secondary,It pays taxes the time for taxpayer at that time ,+number first half is to pay taxes on filling
Foot (if being positive, to reward adequacy of paying taxes) ,+number latter half are when secondary gained taxpaying credit value of paying taxes.
Case of violation of law penalty factor is introduced simultaneously, and continuing modified R n can obtain:
Pi∈ { -10, -9, -8, -7, -6, -5, -4, -3, -2, -1,0 }；
Wherein, PiFor case of violation of law penalty factor, PiIt is defaulted as 0, indicates no punishment, remaining is carried out by case severity
Punishment.
Alliance's chain network is safeguarded that network insertion generally passes through the gateway node access of member mechanism by member mechanism jointly
Alliance's platform chain provides the safety management functions such as member management, certification, authorization, monitoring, audit.Integrated multi-party credit data, builds
Vertical multidimensional Credit Model, can obtain:
Wherein, Ri n indicates the credit score of each dimension, αiFor the shared weight of corresponding dimension credit score, ω is
Other influences Factors.
Application principle of the invention is further described with reference to the accompanying drawing.
Credit investigation system common recognition algorithm design flow diagram is as shown in Figure 3: firstly, being randomly assigned to number for n node, opening from 0
Begin, the last one node is n-1, is determined to appoint node serial number by following algorithm: assuming that the block height currently known together is
H, then p=(h+r) modn, wherein the value range of p is 0≤p < n, and r is greenwich time expressed in seconds；It is all want into
The node that the row power of keeping accounts is fought for will be to appointing node to send transaction message, according to being not used comprising node itself in message body
Sequence is passed through in transaction output total value (i.e. collage-credit data total amount, and the total value can be verified by all nodes by block chain),
Preceding 1/2 node becomes both candidate nodes.The new information belongs to specific type transaction, will not be counted into block chain；The algorithm by when
Between be divided into the timeslice of different length, new block is generated by unique book keeping operation person per a piece of.For m candidate node
Distribution number, from 0 to m-1, candidate that number is (h+r) modm will obtain book keeping operation power become book keeping operation person be responsible for it is wide to the whole network
Information is broadcast, other nodes all become losing candidate and wait verification information；After book keeping operation person to the whole network sends out node all and send Transaction Information,
Retransmit verification information<PrepareRequest, s, h, p, b lock,<blohash>>, after losing candidate receives verification information, to
All nodes of the whole network are sent<PrepareResp onse, h, i, bh,<bhs>>；Arbitrary node receives at least n/ by verifying
After 2 PrepareResp onse, complete block is reached and issued to common recognition, otherwise re-starts previous step；Arbitrary node exists
After receiving intact block, by comprising transaction deleted from memory, and start next round common recognition；
The general architecture diagram of Quorum Dapp is as shown in figure 4, the core of Dapp is intelligent contract, by intelligent contract preservation valence
Value, storing data encapsulate code, can only on contract specification block chain each participant behavior.Web3.js is ether
The library Javascript that mill provides, it encapsulates the JSON RPC API of Ethereum, provides a series of and block chain
Interactive Javascript object and function, and the interface of intelligent contract deployment and interaction.HTML/CSS/JS is then Dapp
Provide friendly web interface.Quorum Dapp bottom block platform chain is Quorum.Quorum is brief point of geth
Branch encapsulates geth, forms Quorum node, makes it have the function of node license and the common recognition mechanism of a variety of substitutions.
The major responsibility of Constellation module is to support private placement placing (private transaction), Constellation
Consist of two parts: Transaction Manager and Enclave.Transaction Manager is used to manage and transmit
Private message, Enclave are used to the encryption and decryption to private message.
Fig. 5 has mainly divided the hierarchical structure of system, and tax platform building is used at B/S framework, bottom block platform chain
Quorum.The rights management system of tax system is divided into three levels: first layer is node license, determines alliance's chain participant,
The node not secured permission can not coalize chain.The second layer is administrator right, and administrator, which has, manages other participants
Permission, this management does not include the deletion of node directly from alliance's chain.Third layer is privacy authority, each participant of alliance's chain
All there is this permission, support private placement placing and private convention, in that case it can be decided that the recipient of information.It is flat for the tax administration
Platform, alliance's chain participant should decide through consultation that inside needs information to be sharing.The recipient of shared loyalty information is all participants,
Use the same intelligent contract.More detailed information is stored by private convention, decides recipient in its sole discretion.It will for credit investigation system
Do not have the privacy authority in Rights Management System, each side can more be motivated to carry out the shared of information in this way.
The overall architecture of the credit investigation system of paying taxes designs as shown in Figure 6 when initiating information request, will be real-time by front end
Alliance's chain that taxpayer's behavior is formed to block chain network (1.1), block chain network Zhong You each department, the tax authority is recorded, it
It is connect with alliance's chain of credit investigation system by side chain, shared data, and guarantees the safety of data.Block chain network handles information
Later by returned data information (1.2).Simultaneously, block chain network can constantly back up data buffer storage to database
(2.1).When sending information request again, inquiry request (3.1) directly will be initiated to database server by front end, so
Inquiry data (3.2) is returned afterwards.If desired weight text information is uploaded then to need such as taxpaying credit information and the great case of violation of law
Weight text information is first uploaded into IPFS file system (3.1), returns to the Hash of weight text information later to front end (3.2), then
(3.3) are bound into the address for uploading to block networking network and specific taxpayer Hash.If database server is disliked
Meaning change, then be changed to from block chain query data (1.2), and again data cached to (2.1) on database server.
Application effect of the invention is described in detail below with reference to test.
System running state test:
Test premise:
It is 3s, about Ethereum goes out 1/5th of block time 1. the fixed setting of block time out is lower.Can more it reach
The purpose of the performance of test common recognition algorithm abft.
2. being communicated between experimental situation interior joint without passing through network interface card and routing, production environment is also required to consider communication band
The influence come.
Experimental situation parameter:
Experiment content:
1. performance detection, simulation carries out credit information upload operation, steps up quantity trial and reaches abft algorithm most
Big handling capacity.
2. pressure detecting, constantly uploads a large amount of transaction data, whether detection maximum throughput may remain in the steady of 4.5K
Determine state.
As shown in Figure 7, certain transactions velocity is kept, as time goes by, number of transaction is gradually increased, system throughput
Amount will tend towards stability state in 4500/second, be suitable for the application of general enterprises grade.
As a result illustrate:
Handling capacity mean value: the number of transaction for including in the last one block/the last one block generate time for using according to
It factually tests as a result, trading volume is after 35000, the handling capacity of system tends towards stability.
According to as a result, the handling capacity of this system can be stablized 4500 or so, demand of the invention can satisfy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of processing method of the reference of paying taxes based on block chain, which is characterized in that the reference of paying taxes based on block chain
Processing method each organization data is run up on a unified block platform chain, and all information are integrated；With
Specific common recognition algorithm, the typing credit data into block chain, and analytical calculation goes out individual credit score, forms a huge letter
Breath set；Open port constantly receives resource simultaneously, forms information network, makes each participant equality and mutual benefit；It is flat to construct the tax
Platform introduces interspace file system, for uploading weight text information, the hash value of return and small data file of paying taxes is direct
It is stored on block chain, is used for inside tax system and in reference alliance, while being buffered in spare traditional database.
2. the processing method of the reference of paying taxes based on block chain as described in claim 1, which is characterized in that described to be based on block
The processing method of the reference of paying taxes of chain uses the Byzantine failure tolerance algorithm based on appointment, and block chain network participant's row is utilized
To quantify using credit as an important factor for appointment.
3. the processing method of the reference of paying taxes based on block chain as claimed in claim 2, which is characterized in that described based on appointment
Byzantine failure tolerance algorithm there are Three roles, be respectively: candidate, book keeping operation person and losing candidate；
Candidate: having book keeping operation contention power, participates in row in this transaction by itself for the collage-credit data amount that credit investigation system provides
Name, ranking are referred to as candidate in preceding 1/3 member, carry out book keeping operation power contention, and ranking is not directly becoming losing candidate preceding 1/3；
Book keeping operation person: obtaining the candidate of book keeping operation power, the information in this time be packaged, and generates Ma Erke tree, calculates packet
Containing previous piece of cryptographic Hash, timestamp, Ma Erke tree root field block head, and intact block is broadcast in block chain network
Other nodes；
Losing candidate: verifying the transaction message in network, is divided into grammer verifying and semantic verification；Each transaction has defeated
Enter and export, the input of transaction is made of other outputs traded；Losing candidate is forwarded the transaction being verified, and does not pass through
Transaction then directly abandon.
4. the processing method of the reference of paying taxes based on block chain as claimed in claim 2, which is characterized in that described based on appointment
Byzantine failure tolerance algorithm in candidate by appointment process generate book keeping operation person, specific appointment process includes:
A) it is randomly assigned to number for n node, since 0, the last one node is n-1, is determined to appoint by following algorithm
Address number: the block height currently known together is h, then p=(h+r) modn, and wherein the value range of p is 0≤p < n, and r is to use
Second indicates greenwich time；
B) all nodes for wanting to carry out book keeping operation power contention will become candidate section by sequence to appointing node to send transaction message
Point；New information belongs to specific type transaction, will not be counted into block chain；Unused transaction in message body comprising node itself is defeated
Total value out, the total value can be verified by all nodes by block chain；
C) abft algorithm divides time into the timeslice of different length, and new area is generated by unique book keeping operation person per a piece of
Block；It is as follows that book keeping operation person generates process: for m candidate node distribution number, from 0 to m-1, number is the candidate of (h+r) modm
Person, which will obtain book keeping operation power, becomes book keeping operation person.
5. the processing method of the reference of paying taxes based on block chain as claimed in claim 2, which is characterized in that described based on appointment
The common recognition process of Byzantine failure tolerance algorithm include:
A) arbitrary node broadcasts transaction data to the whole network, and encloses the signature of sender；
B) all common recognition nodes independently monitor the transaction data of the whole network, and are recorded in memory；
C) book keeping operation person is after time t, transmission < PrepareRequest, s,P, block,<blohash>>；Wherein s is
The signature of block producer, block are that producer is packaged newly-generated block of trading on last stage, and blohash is the block
Cryptographic Hash；
D) losing candidate i first verifies that the validity of signature after receiving motion, verifies later to the transaction in block, verifying
The private key of oneself will be used to sign the build of the block by posterior nodal point, feedback ballot message is generated, to block producer
It sends；Transmission < PrepareResponse,I, bh,<bhs>>；Bh indicates that block head, bhs indicate the node to the private key of bh
Signature；
E) arbitrary node after receiving at least n/2 PrepareResponse, reach and issue complete block by common recognition；Otherwise
Re-start previous step；
F) arbitrary node is after receiving intact block, by comprising transaction deleted from memory, and start next round common recognition.
6. the processing method of the reference of paying taxes based on block chain as claimed in claim 2, which is characterized in that described based on appointment
The transaction verification rule of Byzantine failure tolerance algorithm include:
A) format judges, whether this transaction message meets writing composition rule, includes defined all necessary fields；
B) content judges, the input and output of transaction are judged, are exported according to unused transaction to determine whether this can be completed
Transaction；
C) there is judgement, whether which is already present among block chain；
D) licit traffic can be packaged into block by book keeping operation person, and illegal transaction will be abandoned directly.
7. a kind of sign of paying taxes based on block chain of processing method for realizing the reference of paying taxes described in claim 1 based on block chain
Letter system, which is characterized in that the credit investigation system of paying taxes based on block chain includes:
Node permissions module determines that alliance's chain participant, the node not secured permission can not coalize chain；
Administrator right module, administrator have the permission for managing other participants, and this management does not include directly from alliance's chain
Middle deletion of node；
Privacy authority module, each participant of alliance's chain have this permission, support private placement placing and private convention, determine letter
The recipient of breath.
8. as claimed in claim 7 based on the credit investigation system of paying taxes of block chain, which is characterized in that the receiving based on block chain
Tax credit investigation system is built into B/S framework, and bottom block platform chain uses Quorum.
9. a kind of tax system of the processing method using the reference of paying taxes described in claim 1~6 any one based on block chain
Reference of uniting manages platform.
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| CN113808694A (en) * | 2021-09-17 | 2021-12-17 | 郑州轻工业大学 | Game theory-based block chain medical data sharing excitation method |
| CN116109225B (en) * | 2022-10-27 | 2023-08-11 | 大连理工大学 | Block chain-based dangerous waste treatment service platform, device and storage medium |
| CN116109225A (en) * | 2022-10-27 | 2023-05-12 | 大连理工大学 | Block chain-based dangerous waste treatment service platform, device and storage medium |
| CN116260663B (en) * | 2023-05-16 | 2023-08-11 | 山东邦牛信息科技有限公司 | Tax control management method and system for gas station |
| CN116260663A (en) * | 2023-05-16 | 2023-06-13 | 山东邦牛信息科技有限公司 | Tax control management method and system for gas station |
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