CN110599275A - Data processing method and device based on block chain network and storage medium - Google Patents

Abstract

The embodiment of the invention discloses a data processing method, a device and a storage medium based on a block chain network, wherein the block chain network comprises a plurality of nodes, and the data processing method based on the block chain network comprises the following steps: the node receives a billing request submitted by a client running on a user terminal, distributes an invoice number segment by calling an intelligent contract in response to the billing request, broadcasts the distributed invoice number segment to other nodes in the block chain, and after the intelligent contract detects that the other nodes commonly identify the distributed invoice number segment, the node issues an invoice according to the distributed invoice number segment and transmits the issued invoice back to the client on the user terminal. By adopting the data processing mode based on the block chain network, the billing of enterprise operation can be reduced through the block chain technology.

Description

Data processing method and device based on block chain network and storage medium

Technical Field

The present invention relates to the field of computer technologies, and in particular, to a data processing method and apparatus based on a blockchain network, and a storage medium.

Background

The tax-counting cash register is a cash register with legal seriousness and indestructibility and a tax-counting function, and is not only a powerful assistant for business enterprise operation management, but also a law enforcement representative for tax staff resident in a shop to collect sales data. Enterprises need to purchase a tax-counting cash register to invoice, the business invoicing cost of the enterprises is increased, and the invoicing behavior cannot be carried out if the tax-counting cash register breaks down, so that the invoicing is low in convenience and rapidness. Therefore, how to provide an invoicing method which is convenient to invoice and low in cost and replaces tax control equipment becomes a problem to be solved urgently.

Disclosure of Invention

The embodiment of the invention provides a data processing method, a data processing device and a storage medium based on a block chain network, which can rapidly bill by using a block chain technology and reduce the billing cost of enterprise operation.

In a first aspect, an embodiment of the present invention provides a data processing method based on a blockchain network, where the blockchain network includes a plurality of nodes, and the method includes:

a node receives an invoicing request submitted by a client running on a user terminal, wherein the node is any one of the plurality of nodes;

the nodes respond to the invoicing request, allocate the invoice number sections by calling intelligent contracts and broadcast the allocated invoice number sections to other nodes in the plurality of nodes, wherein the intelligent contracts run on the virtual machine of any one node;

and after the node detects that the other nodes pass the consensus of the distributed invoice number segments, the node issues an invoice according to the distributed invoice number segments and transmits the issued invoice back to the client on the user terminal.

In a second aspect, an embodiment of the present invention provides a data processing apparatus based on a blockchain network, where the data processing apparatus based on a blockchain network includes:

the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for receiving an invoicing request submitted by a client running on a user terminal;

the number section distribution unit is used for responding to the invoicing request, distributing the invoice number sections by calling the intelligent contract and broadcasting the distributed invoice number sections to other nodes in the plurality of nodes;

the invoicing unit is used for issuing an invoice according to the allocated invoice number segment after the intelligent contract detects that the other nodes pass the consensus of the allocated invoice number segment;

and the output unit is used for transmitting the issued invoice back to the client on the user terminal.

In a third aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes an input device and an output device, and the terminal device further includes a processor adapted to implement one or more instructions; and the number of the first and second groups,

a computer storage medium storing one or more instructions adapted to be loaded by the processor and to perform the method for data processing based on a blockchain network according to the first aspect.

In a fourth aspect, an embodiment of the present invention provides a computer storage medium, where instructions are stored, and when the instructions are executed on a computer, the computer is caused to execute the data processing method based on a blockchain network according to the first aspect.

In the embodiment of the application, the blockchain network node receives a billing request submitted by a client running on a user terminal, responds to the billing request, allocates the invoice number segment by calling an intelligent contract, and broadcasts the allocated invoice number segment to other nodes in the blockchain multiple nodes. Further, after the block chain network node detects that other nodes commonly identify the allocated invoice number segment, the block chain network node issues an invoice according to the allocated invoice number segment and transmits the issued invoice back to the client on the user terminal. By adopting the data processing mode based on the block chain network, the billing of enterprise operation can be reduced through the block chain technology.

Drawings

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. 1a is a block diagram of a data processing system according to an embodiment of the present invention;

fig. 1b is a schematic structural diagram of a block chain according to an embodiment of the present invention;

FIG. 1c is a schematic diagram of a process for generating a new block according to an embodiment of the present invention;

fig. 2 is a schematic flowchart of a data processing method based on a blockchain network according to an embodiment of the present invention;

FIG. 3a is a schematic illustration of an invoice provided by an embodiment of the invention;

FIG. 3b is a diagram of a client login interface according to an embodiment of the present invention;

fig. 4 is a schematic flowchart of another data processing method based on a blockchain network according to an embodiment of the present invention;

fig. 5 is a schematic flowchart of a data processing method based on a blockchain network according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a data processing apparatus based on a blockchain network according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Aiming at the problems of high billing cost and low billing convenience degree at present, the embodiment of the invention provides a data processing method based on a block chain network, which can bill conveniently through a block chain technology and reduce the billing cost of enterprise operation.

Referring to fig. 1a, it is a schematic diagram of an architecture of a data processing system according to an embodiment of the present invention, the data processing system includes a blockchain network 10, a user terminal 102 and a tax office terminal 103, where:

the blockchain network 10 refers to a network that performs data sharing between nodes, and a plurality of nodes 101 may be included in the blockchain network. Each node 101 may receive input information and maintain shared data (i.e., blockchains) within the blockchain network based on the received input information while operating normally. In order To ensure information intercommunication in the blockchain network, each node may have information connection, and any two nodes may implement Peer-To-Peer (P2P) communication, and specifically may perform P2P communication through a wired communication link or a wireless communication link. For example, when any node in the blockchain network receives input information, other nodes acquire the input information according to a consensus algorithm, and store the input information as data in shared data, so that the data stored on all nodes in the blockchain network are consistent.

The user terminal 102 and the tax office terminal 103 may access the blockchain network and may communicate with nodes in the blockchain network, such as submitting invoicing requests to the nodes, receiving invoices issued by the nodes, and so on. The user terminal 102 and the tax office terminal 103 may be a smart phone, a tablet computer, a notebook computer, a desktop computer, a vehicle-mounted smart terminal, and the like.

It should be noted that the number of nodes shown in fig. 1a is only illustrative, and any number of nodes may be deployed according to actual needs, and the user terminal 102 and the tax office terminal 103 may communicate with the same node in the blockchain network or communicate with different nodes in the blockchain network respectively.

Each node in the blockchain network has a corresponding node identifier, and each node in the blockchain network can store node identifiers of other nodes in the blockchain network, so that the generated block can be broadcast to other nodes in the blockchain network according to the node identifiers of other nodes. Each node may maintain a node identifier list as shown in the following table, and store the node name and the node identifier in the node identifier list correspondingly. The node identifier may be an Internet Protocol (IP) address or any other information that can be used to identify the node, and the table is described by taking the IP address as an example.

Each node in the blockchain network stores one identical blockchain. The block chain is composed of a plurality of blocks, referring to fig. 1b, the block chain is composed of a plurality of blocks, the starting block comprises a block head and a block main body, the block head stores an input information characteristic value, a version number, a timestamp and a difficulty value, and the block main body stores input information; the next block of the starting block takes the starting block as a parent block, the next block also comprises a block head and a block main body, the block head stores the input information characteristic value of the current block, the block head characteristic value of the parent block, the version number, the timestamp and the difficulty value, and the like, so that the block data stored in each block in the block chain is associated with the block data stored in the parent block, and the safety of the input information in the block is ensured.

When each block in the block chain is generated, referring to fig. 1c, when a node where the block chain is located receives input information, the input information is verified, after the verification is completed, the input information is stored in a memory pool, and a hash tree used for recording the input information is updated; and then, updating the updating time stamp to the time when the input information is received, trying different random numbers, and calculating the characteristic value for multiple times, so that the calculated characteristic value can meet the following formula:

SHA256(SHA256(version+prev_hash+merkle_root+ntime+nbits+x))<TARGET

wherein, SHA256 is a characteristic value algorithm used for calculating a characteristic value; version is version information of the relevant block protocol in the block chain; prev _ hash is a block head characteristic value of a parent block of the current block; merkle _ root is a characteristic value of the input information; ntime is the update time of the update timestamp; nbits is the current difficulty, is a fixed value within a period of time, and is determined again after exceeding a fixed time period; x is a random number; TARGET is a feature threshold, which can be determined from nbits.

Therefore, when the random number meeting the formula is obtained through calculation, the information can be correspondingly stored, and the block head and the block main body are generated to obtain the current block. And then, the node where the block chain is located respectively sends the newly generated blocks to other nodes in the block chain network where the newly generated blocks are located according to the node identifications of the other nodes in the block chain network, the newly generated blocks are verified by the other nodes, and the newly generated blocks are added to the block chain stored in the newly generated blocks after the verification is completed.

The intelligent contract can be operated on the nodes of the block chain network, the intelligent contract is realized by codes executed when a certain condition is met, developers can define contract logic through a programming language, issue the contract logic to the block chain (intelligent contract registration), and call keys or other events to trigger execution according to the logic of contract terms to complete the contract logic and simultaneously provide the functions of upgrading and cancelling the intelligent contract.

In some possible embodiments, a certain node 101 of the blockchain network may receive an invoicing request submitted by a user through a client running on a user terminal device 102, allocate an invoice number segment by invoking an intelligent contract in response to the invoicing request, and broadcast the allocated invoice number segment to other nodes of the plurality of nodes. Further, after the intelligent contract detects that the other nodes pass the consensus of the allocated invoice number segments, the node 101 issues an invoice according to the allocated invoice number segments, and returns the issued invoice to the client on the user terminal. By adopting the data processing mode based on the block chain network, the billing of enterprise operation can be reduced through the block chain technology.

The implementation details of the technical scheme of the embodiment of the invention are explained in detail as follows:

referring to fig. 2, it is a schematic flow chart of a data processing method based on a blockchain network provided by the data processing system shown in fig. 1a according to an embodiment of the present invention, where the data processing method based on a blockchain network according to an embodiment of the present invention is described from a node side, the blockchain network includes a plurality of nodes, and the data processing method based on a blockchain network includes the following steps:

s201: the node receives an invoicing request submitted by a client running on a user terminal.

Wherein the node is any one of the plurality of nodes. The invoicing request carries transaction information, and the transaction information comprises one or more of invoicing party information, invoicee receiving party information, transaction amount and transaction content.

S202: the node allocates an invoice number segment by invoking the intelligent contract in response to the billing request and broadcasts the allocated invoice number segment to other nodes of the plurality of nodes of the blockchain network. Wherein, the intelligent contract runs on the virtual machine of any one of the nodes.

In one embodiment, the invoicing request further carries a first digital certificate assigned by the tax office server, and the blockchain network node may further verify whether the first digital certificate is legal or not before responding to the invoicing request by calling the intelligent contract assigned number segment. And if the first digital certificate is legal, the node executes the step of responding to the invoicing request and distributing the invoice number segment by calling an intelligent contract.

And if the first digital certificate is illegal, outputting an error user information prompt to a client running on the user terminal, and refusing to respond to the invoicing request and distributing number segments by calling an intelligent contract.

Wherein the first digital certificate is used for uniquely identifying the invoicer. The user may specifically refer to an enterprise user. The user can submit a request for registering enterprise information on the tax office server to become a legal invoicing party, wherein the enterprise information comprises an enterprise name, an enterprise taxpayer identification number, an enterprise detailed address, a contact mode, an account number and an account number. And the tax office server verifies the authenticity of the enterprise information, issues a first digital certificate for the user after the verification is passed so that the user becomes a legal invoicer, and writes the first digital certificate and the enterprise information into a register table of the tax office server.

In one embodiment, if the registered enterprise information changes, the user may submit a registry change request to the tax office server. The tax bureau server responds to the registry change request, receives the changed registered enterprise information, and writes the changed enterprise registration information into the registry to replace the original registered enterprise information.

Illustratively, enterprise a submits registered enterprise information to the tax office server requesting to become a legitimate biller. The registered enterprise information is shown in the following table:

name of an enterprise	A company of limited responsibility
		Enterprise taxpayer identification number	123456789123456
Detailed address of enterprise	XX district XX road XX mansion 19-12 of XX city XX province
		Account opening row and account	China Bank XX Branch 6021344556XXX
Contact means	139XXXXXXXX

The tax office server verifies the authenticity of the enterprise information, issues a first digital certificate, such as 00001, to the user after the verification is passed, and writes the first digital certificate and the enterprise information into a tax office server registry, wherein the first digital certificate 00001 uniquely corresponds to the enterprise information in the tax office server registry. As shown in the following table:

first digital certificate	Name of an enterprise	Registry information
			00001	A company of limited responsibility	Information of A enterprises
00002	B company of limited responsibility	B Enterprise information
			00003	C company of limited responsibility	C Enterprise information

Illustratively, before responding to the invoicing request of the A enterprise and allocating the number segment by calling the intelligent contract, the blockchain network node acquires the first digital certificate 00001 submitted by the A enterprise from the invoicing request, and inquires from the tax authority server registry according to the first digital certificate 00001 to verify whether the first digital certificate is registered as a legal invoicing party. And inquiring and verifying that the enterprise A corresponding to the first digital certificate is a legal invoicing party, verifying that the enterprise A is legal and responding to the invoicing request, and executing the step of allocating number sections by calling the intelligent contract. If the enterprise A corresponding to the first digital certificate is verified to be not a legal invoicing party by inquiry, the first digital certificate 00001 is verified to be illegal, an error user information prompt is output on a client side of the enterprise A submitting an invoicing request, and the request for invoicing is refused to be responded, and a number section is distributed by calling an intelligent contract.

After the enterprise registration information of the enterprise A is changed, a registry change request can be submitted to the tax office server. The tax office server responds to the request for changing the registry, receives the changed registered enterprise information, for example, the contact telephone is changed to 177xxxxxx, writes the changed enterprise registration information into the registry to replace the original registered enterprise information, and then the registered enterprise information table is shown as follows:

name of an enterprise	A company of limited responsibility
		Enterprise taxpayer identification number	123456789123456
Detailed address of enterprise	XX district XX road XX mansion 19-12 of XX city XX province
		Account opening row and account	China Bank XX Branch 6021344556XXX
Contact means	177XXXXXXXX

In one embodiment, the blockchain network node may further receive an intelligent contract broadcasted by the tax bureau server to the blockchain network before allocating the invoice number segment by invoking the intelligent contract in response to the billing request, the intelligent contract being used for allocating the invoice number segment, invoicing and managing the authority of the plurality of nodes.

The authority of the plurality of nodes may specifically refer to a query authority of the transaction information. The block chain network node corresponding to the tax terminal has the inquiry authority for inquiring the transaction information in the tax administration jurisdiction corresponding to the tax terminal, and the block chain network node corresponding to the user terminal has the inquiry authority for inquiring the transaction information related to the user.

Illustratively, the transaction information query authority range of the blockchain network node corresponding to the enterprise a is to query the transaction information with the enterprise user a as a seller or query the transaction information with the enterprise user a as a buyer. The transaction information inquiry authority range of the blockchain network node corresponding to the regional tax bureau a is used for inquiring enterprise transaction information registered in the regional tax bureau a, and the transaction information inquiry authority range of the blockchain network node corresponding to the regional tax bureau b is used for inquiring enterprise transaction information registered in the regional tax bureau b.

In one embodiment, the node obtains a preset invoice number segment pool in response to the invoicing request. Further, the node may randomly select an invoice number segment from the pool of preset invoice number segments by invoking an intelligent contract.

The preset invoice number segment pool is shared by all nodes in the block chain network, and the tax bureau server sets the range of the invoice number segment in the invoice number segment pool.

Illustratively, the block chain network node responds to the invoicing request of the enterprise A, obtains an invoice number segment pool preset by the tax office server, wherein the range of the invoice number segments in the invoice number segment pool is 10000000-99999999, and randomly selects 12345678 from the invoice number segment pool as the invoice number segment of the invoicing request of the enterprise A.

In one embodiment, after a node selects an invoice number segment from a preset invoice number segment pool by calling an intelligent contract, the invoice number segment should be marked in the invoice number segment pool, or the invoice number segment is moved out of the invoice number segment pool, and other nodes are informed to correspondingly mark the invoice number segment in the invoice pool, or the invoice number segment is correspondingly moved out of the invoice number segment pool, so as to avoid the situation that the same invoice number segment is used for multiple times.

S203: and after the intelligent contract detects that other nodes commonly identify the distributed invoice number segment, the nodes issue invoices according to the distributed invoice number segment and transmit the issued invoices back to the client on the user terminal.

In one embodiment, after the intelligent contract detects that other nodes pass the consensus of the allocated invoice number segment, the blockchain network node may obtain the registered enterprise information of the invoicing party by calling the intelligent contract to generate an invoice template, and invoicing is performed according to the transaction information in the invoicing request and the allocated invoice number segment. By adopting the invoicing mode, the convenience of invoicing is improved, and the condition of disordered invoice number section distribution is avoided when a plurality of enterprises invoice simultaneously.

Illustratively, the block chain network node allocates a number segment to 12345678 by calling an intelligent contract in response to the invoicing request of the enterprise a, and after the intelligent contract detects that other nodes pass the allocated invoice number segment, acquires the registered enterprise information of the enterprise a by calling the intelligent contract to generate an invoice template. And invoices based on the transaction information in the invoicing request and the allocated invoice number segment, the invoiced invoice being shown in figure 3 a.

In one embodiment, after the blockchain network node issues the invoice according to the allocated invoice number segment and returns the issued invoice to the client on the user terminal, the transaction information can be sent to the tax office server, so that the tax office server can store the transaction information, and the transaction information is used for the tax authority to inquire the tax information.

In one embodiment, after the blockchain network node sends the transaction information to the tax office server, the tax office server may perform data pneumatic analysis according to the transaction information to check whether the charging status of the transaction information is abnormal. The abnormal charging condition includes unreasonable charging phenomenon and fraudulent behavior. And if the transaction condition is checked to be abnormal, performing abnormal marking on the enterprise information. Subsequently, the data can be subjected to key verification according to the abnormal label, and the efficiency of tax verification is improved.

In the embodiment of the application, the blockchain network node receives a billing request submitted by a client running on a user terminal, responds to the billing request, allocates the invoice number segment by calling an intelligent contract, and broadcasts the allocated invoice number segment to other nodes in the blockchain multiple nodes. Further, after the intelligent contract detects that other nodes pass the consensus of the allocated invoice number segment, the block chain network node issues an invoice according to the allocated invoice number segment and transmits the issued invoice back to the client on the user terminal. By adopting the data processing mode based on the block chain network, the billing of enterprise operation can be reduced through the block chain technology.

Referring to fig. 4, it is a schematic flow chart of another data processing method based on a blockchain network provided by the data processing system shown in fig. 1a according to an embodiment of the present invention, where the data processing method based on a blockchain network according to an embodiment of the present invention is described from a node side, the blockchain network includes a plurality of nodes, and the data processing method based on a blockchain network includes the following steps:

s401: the node receives an invoicing request submitted by a client running on a user terminal.

S402: the node allocates an invoice number segment by invoking the intelligent contract in response to the billing request and broadcasts the allocated invoice number segment to other nodes of the plurality of nodes of the blockchain network.

S403: and after the node detects that other nodes commonly identify the distributed invoice number segment, invoicing is carried out according to the distributed invoice number segment, and the invoiced invoice is transmitted back to the client on the user terminal.

For specific implementation of steps S401 to S403, reference may be made to the detailed description of steps S201 to S203 in the foregoing embodiment, which is not described herein again.

S404: the node writes the invoice to the block and broadcasts the block to other nodes. Further, after other nodes pass the consensus for the tile, the tile is added to the chain of tiles.

Before specific implementation, a block chain network node firstly adopts an asymmetric encryption algorithm to create a key pair for a user; asymmetric encryption algorithms herein may include, but are not limited to: the Elgamal algorithm (an asymmetric encryption algorithm), the Rabin algorithm (an asymmetric encryption algorithm), the Diffie-Hellman algorithm (an asymmetric encryption algorithm), the ECC algorithm (elliptic curve encryption algorithm). Wherein the key pair comprises a public key and a private key; the public key is used for identifying a transaction address of a client on the user terminal, and the private key is used for signing invoice information by the client on the user terminal. After the key pair is created, the client on the user terminal can upload the public key in the key pair to the blockchain network, so that the blockchain network takes the public key in the key pair as the transaction address of the client on the user terminal; while the private key is kept by the client on the user terminal. It should be noted that, transaction addresses in the blockchain network are unique, and one transaction address corresponds to one client (i.e., user); that is, the public key may mark the user identity of the user indicated by the client on the user terminal.

In a specific implementation, the blockchain network node signs the issued invoice using a private key, and then uploads the signed invoice to the blockchain network. After receiving the signed invoice, the block chain network performs identity verification on the invoice by using the public key corresponding to the private key so as to judge the authenticity and validity of the invoice. If the verification is successful, acquiring the first block from the block chain, then acquiring all information in the block head of the first block, acquiring the block head characteristic value of the first block based on all information in the block head of the first block, acquiring invoice information to be stored in the block main body of the second block, then performing characteristic value calculation on the invoice information to obtain the block main body characteristic value of the second block, and further storing the block head characteristic value of the first block and the block body characteristic value of the second block to the block head of the second block. The block chain network calls a consensus mechanism of the network, and after the consensus is passed, the second block is stored in the block chain. By adopting the mode, the authenticity and the traceability of the data can be ensured.

In one embodiment, the blockchain network node may receive feedback information sent by the client for the invoiced invoice, the feedback information indicating whether the content of the invoiced invoice is abnormal.

And if the feedback information indicates that the content of the issued invoice is abnormal, marking the issued invoice as invalid. The content exception of the invoiced invoice means that the invoicer or the invoicee receiver doubts the invoice content after the client receives the invoice information.

In the specific implementation, the blockchain network node receives feedback information aiming at the issued invoice sent by the client, if the feedback information indicates that the content of the issued invoice is abnormal, the issued invoice is marked to be invalid and identification information of the invoice invalidation is sent to the blockchain network, the identification information of the invoice invalidation is written into the block, and the block is broadcasted to other nodes. The block is added to the blockchain after other nodes in the blockchain pass the consensus for the block. By adopting the billing mode, the data can be monitored in real time while the data can not be falsified, and the condition of charge disorderly is prevented.

S405: and the node receives a tax information query request submitted by a client on the tax bureau terminal, wherein the tax information query request carries the identification information of a query object and a second digital certificate.

The client on the tax bureau terminal can be the same client as the client on the user terminal, and the client has two login interfaces, as shown in fig. 3b, the login interfaces can be switched with the identities of the loggers. The query object may be any legitimate biller. The second digital certificate is issued by the tax authority to uniquely identify tax authority information so that the intelligent contract manages the inquiry authority according to the second digital certificate. The method provides the inquiry mode for the tax bureau, improves the convenience of tax verification and improves the efficiency of tax verification.

S406: and the node calls an intelligent contract to determine the inquiry authority matched with the second digital certificate, acquires the associated tax information of the inquiry object matched with the inquiry authority in the block chain according to the identification information of the inquiry object, and transmits the associated tax information back to the client on the tax bureau terminal.

In the specific implementation, after receiving a tax information query request carrying a second digital certificate and query object identification information, which is submitted by a client on a tax office terminal, a block chain network node calls an intelligent contract to determine the query authority of the tax office according to the second digital certificate. If the tax office has the authority to the query object, the tax office searches the associated tax information of the query object in the block chain according to the identification information of the query object and transmits the associated tax information back to the client of the tax office terminal.

The identification information of the query object may refer to identification information of all tax information of the query object, or may refer to identification information of tax information of the query object within a period of time.

In the embodiment of the application, the block chain network node receives a billing request submitted by a client running on a user terminal, responds to the billing request, allocates the invoice number segment by calling an intelligent contract, and broadcasts the allocated invoice number segment to other nodes in the plurality of nodes of the block chain network. And after the intelligent contract detects that other nodes pass the common identification of the distributed invoice number segment, issuing an invoice according to the distributed invoice number segment, transmitting the issued invoice back to a client on the user terminal, writing the issued invoice into a block, and broadcasting the block to other nodes. Further, after other nodes pass the consensus for the tile, the tile is added to the chain of tiles. Further, the block chain network node may receive a tax information query request submitted by a client on the tax bureau terminal, where the tax information query request carries identification information of a query object and a second digital certificate, and invoke an intelligent contract to determine a query right matching the second digital certificate, and obtain associated tax information of the query object matching the query right in the block chain according to the identification information of the query object, and return the associated tax information to the client on the tax bureau terminal. By adopting the data processing mode based on the block chain, the efficiency of tax information inquiry can be improved by quickly making an invoice through the block chain technology, and the authenticity and traceability of data are effectively ensured.

Fig. 5 is a schematic flow chart illustrating another data processing method based on a blockchain network provided by the data processing system shown in fig. 1a according to an embodiment of the present invention. The data processing method based on the block chain network comprises the following steps:

s501: a client running on a user terminal submits an invoicing request to a node.

The invoicing request carries transaction information, and the transaction information comprises one or more of invoicing party information, invoicee party information, transaction amount and transaction content.

S502: the node allocates an invoice number segment by invoking the intelligent contract in response to the billing request and broadcasts the allocated invoice number segment to other nodes of the plurality of nodes of the blockchain network.

S503: and after the node detects that other nodes commonly identify the distributed invoice number segment, invoicing is carried out according to the distributed invoice number segment, and the invoiced invoice is transmitted back to the client on the user terminal.

For specific implementation of steps S502 to S503, reference may be made to the detailed description of steps S202 to S203 in the foregoing embodiment, which is not described herein again.

S504: the node writes the invoice to the block and broadcasts the block to other nodes. Further, after other nodes pass the consensus for the tile, the tile is added to the chain of tiles.

For a specific implementation of step S504, reference may be made to the detailed description of step S404 in the foregoing embodiment, which is not described herein again.

S505: and the client on the tax bureau terminal sends a tax information query request to the node.

The tax information query request carries identification information of a query object and a second digital certificate. The client on the tax bureau terminal can be the same client as the client on the user terminal, and the client has two login interfaces.

S506: and the node receives the tax information inquiry request, calls an intelligent contract to determine the inquiry authority matched with the second digital certificate, acquires the associated tax information of the inquiry object matched with the inquiry authority in the block chain according to the identification information of the inquiry object, and transmits the associated tax information back to the client on the tax bureau terminal.

The specific implementation of step S506 may refer to the specific description of step S406 in the above embodiment, and is not described herein again.

In the embodiment of the application, a client running on a user terminal submits a billing request to a blockchain network node, the blockchain network node responds to the billing request and allocates an invoice number segment by calling an intelligent contract, the allocated invoice number segment is broadcast to other nodes in a plurality of nodes of the blockchain network, after the intelligent contract detects that the other nodes commonly identify the allocated invoice number segment, the blockchain network node invoices according to the allocated invoice number segment, the invocated invoice is returned to the client on the user terminal, the invocated invoice is written into a block, and the block is broadcast to the other nodes. Further, after the other nodes pass the block consensus, the block is added into the block chain, and the client on the tax bureau terminal submits a tax information query request to the block chain network node, wherein the tax information query request carries the identification information of the query object and the second digital certificate. And the block chain network node receives the tax information query request, invokes an intelligent contract to determine a query authority matched with the second digital certificate, acquires the associated tax information of the query object matched with the query authority in the block chain according to the identification information of the query object, and transmits the associated tax information back to the client on the tax bureau terminal. By adopting the data processing mode based on the block chain, the efficiency of tax information inquiry can be improved by quickly making an invoice through the block chain technology, and the authenticity and traceability of data are effectively ensured.

Based on the description of the above method embodiment, the embodiment of the present invention further provides a data processing apparatus based on a block chain network. Referring to fig. 6, the data processing apparatus based on the blockchain network may operate as follows:

an obtaining unit 601, configured to receive an invoicing request submitted by a client running on a user terminal;

a number segment allocation unit 602, configured to allocate an invoice number segment by invoking an intelligent contract in response to the invoicing request, and broadcast the allocated invoice number segment to other nodes in the plurality of nodes, where the intelligent contract runs on a virtual machine of any one node;

a billing unit 603, configured to, after the intelligent contract detects that the other node passes the consensus of the allocated invoice number segment, issue an invoice according to the allocated invoice number segment;

an output unit 604, configured to transmit the issued invoice back to the client on the user terminal.

The invoicing request carries transaction information, and the transaction information comprises one or more of invoicing party information, invoicee party information, transaction amount and transaction content.

In one embodiment, the data processing apparatus based on the blockchain network further includes a verification unit 605, the invoicing request further carries a first digital certificate assigned by a tax office server, before the number segment assignment unit 602 assigns an invoice number segment by invoking an intelligent contract in response to the invoicing request, the verification unit 605 is configured to verify whether the first digital certificate is legal, and if the first digital certificate is legal, the number segment assignment unit 602 performs the step of assigning the invoice number segment by invoking the intelligent contract in response to the invoicing request.

In one embodiment, before the number segment allocating unit 602 executes the allocating of the invoice number segment by invoking an intelligent contract in response to the invoicing request, the obtaining unit 601 may be further configured to receive the intelligent contract broadcasted by the tax bureau server to the blockchain network, and the intelligent contract is used for allocating the invoice number segment, invoicing and managing the authority of the plurality of nodes.

In one embodiment, the invoicing unit 603 invoices according to the allocated invoice number segment, and after the output unit 604 returns the invoiced invoice to the client, the output unit 604 is further configured to send the transaction information to a tax office server, so that the tax office server stores the transaction information, and the transaction information is used for a tax authority to inquire tax information.

In one embodiment, the data processing apparatus based on a blockchain network further includes a writing unit 606, the invoicing unit 603 invoices according to the allocated invoice number segment, after the output unit 604 returns the invoiced invoice to the client, the writing unit is configured to write the invoiced invoice into a block and broadcast the block to the other nodes, and after the other nodes pass the block, add the block into a blockchain.

In an embodiment, the data processing apparatus based on the blockchain network further includes an inquiring unit 607, and the obtaining unit 601 is further configured to receive a tax information inquiry request submitted by a client running on a tax bureau terminal, where the tax information inquiry request carries identification information of an inquiry object and a second digital certificate. The query unit 607 is configured to invoke the smart contract to determine a query right matching the second digital certificate; and acquiring the associated tax information of the query object matched with the query authority in the block chain according to the identification information of the query object. The output unit 604 is further configured to transmit the associated tax information back to the client on the tax bureau terminal.

In one embodiment, the data processing apparatus based on the blockchain network further comprises a marking unit 608. The obtaining unit 601 is further configured to receive feedback information for the issued invoice sent by the client, where the feedback information indicates whether the content of the issued invoice is abnormal. The marking unit 608 is configured to mark the issued invoice as invalid if the feedback information indicates that the content of the issued invoice is abnormal.

In one embodiment, the number segment allocating unit 602 is further configured to obtain a preset invoice number segment pool in response to the invoicing request, and randomly select an invoice number segment from the preset invoice number segment pool by invoking an intelligent contract.

It should be noted that the functions of each unit module of the data processing apparatus based on the blockchain network described in the embodiment of the present invention may be specifically implemented according to the method in the method embodiment described in fig. 2, fig. 4, or fig. 5, and a specific implementation process thereof may refer to the description related to the method embodiment of fig. 2, fig. 4, or fig. 5, and is not described again here.

Based on the description of the method embodiment and the apparatus item embodiment, the embodiment of the present invention further provides a terminal device. Referring to fig. 7, the terminal device may include at least a processor 701, an input device 702, an output device 703 and a memory 704; the processor 701, the input device 702, the output device 703, and the memory 704 may be connected by a bus or other connection. The memory 704 is used for storing a computer program comprising program instructions, and the processor 701 is used for executing the program instructions stored by the memory 704. The processor 701 (or CPU) is a computing core and a control core of the terminal device, and is adapted to implement one or more instructions, and specifically, adapted to load and execute the one or more instructions so as to implement the corresponding method flow or the corresponding function in the data processing method embodiment based on the blockchain network. Wherein the processor 701 is configured to call the program instruction to perform: receiving an invoicing request submitted by a client running on a user terminal; responding to the invoicing request, allocating invoice number sections by calling intelligent contracts, and broadcasting the allocated invoice number sections to other nodes in the plurality of nodes; and after the intelligent contract detects that the other nodes pass the common identification of the distributed invoice number segments, issuing an invoice according to the distributed invoice number segments, and transmitting the issued invoice back to the client on the user terminal.

In one embodiment, the invoicing request carries transaction information, and the transaction information comprises one or more of invoicing party information, ticketed party information, transaction amount and transaction content.

In one embodiment, the invoicing request further carries a first digital certificate assigned by a tax office server, and before the node responds to the invoicing request and assigns an invoice number segment by calling an intelligent contract, the processor 701 is further configured to verify whether the first digital certificate is legal; and if the first digital certificate is legal, executing the step of responding to the invoicing request and distributing the invoice number section by calling an intelligent contract.

In one embodiment, before the allocating the invoice number segment by invoking the intelligent contract in response to the invoicing request, the processor 701 is further configured to receive the intelligent contract broadcasted by the tax bureau server to the blockchain network, and the intelligent contract is configured to allocate the invoice number segment, invoice and manage the authority of the plurality of nodes.

In one embodiment, after the invoice is issued according to the allocated invoice number segment and the issued invoice is returned to the client, the processor 701 is further configured to send the transaction information to a tax office server, so that the tax office server stores the transaction information, and the transaction information is used for a tax authority to inquire tax information.

In one embodiment, after the invoicing is performed according to the allocated invoice number segment and the invoiced invoice is returned to the client, the processor 701 is further configured to write the invoiced invoice into a block and broadcast the block to the other nodes; adding the tile into a chain of tiles after the other nodes pass the tile consensus.

In one embodiment, the processor 701 is further configured to receive a tax information query request submitted by a client running on a tax bureau terminal, where the tax information query request carries identification information of a query object and a second digital certificate; calling the intelligent contract to determine the query authority matched with the second digital certificate; acquiring associated tax information of the query object matched with the query authority in the block chain according to the identification information of the query object; and transmitting the associated tax information back to the client on the tax bureau terminal.

In one embodiment, the processor 701 is further configured to receive feedback information sent by the client for the issued invoice, where the feedback information indicates whether the content of the issued invoice is abnormal; and if the feedback information indicates that the content of the issued invoice is abnormal, marking the issued invoice as invalid.

In one embodiment, the processor 701 is further configured to obtain a preset invoice number segment pool in response to the invoicing request; and randomly selecting an invoice number section from the preset invoice number section pool by calling an intelligent contract.

It should be understood that, in the embodiment of the present invention, the Processor 701 may be a Central Processing Unit (CPU), and the Processor 701 may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete a hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 704 may include both read-only memory and random-access memory, and provides instructions and data to the processor 701. A portion of the memory 704 may also include non-volatile random access memory. For example, the memory 704 may also store device type information. The input device 703 may include a touch pad, a fingerprint sensor (for collecting fingerprint information of a user), a microphone, a physical keyboard, etc., and the output device 703 may include a display (LCD, etc.), a speaker, etc.

In specific implementation, the processor 701, the memory 704, the input device 702, and the output device 703 described in this embodiment of the present invention may execute the implementation described in the method embodiment described in fig. 2, fig. 4, or fig. 5 provided in this embodiment of the present invention, and may also execute the implementation method of the data processing apparatus based on the blockchain network described in this embodiment of the present invention, which is not described herein again.

In another embodiment of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program comprising program instructions that when executed by a processor implement: receiving an invoicing request submitted by a client running on a user terminal; responding to the invoicing request, allocating invoice number sections by calling intelligent contracts, and broadcasting the allocated invoice number sections to other nodes in the plurality of nodes; and after the intelligent contract detects that the other nodes pass the common identification of the distributed invoice number segments, issuing an invoice according to the distributed invoice number segments, and transmitting the issued invoice back to the client on the user terminal.

The computer readable storage medium may be an internal storage unit of the terminal according to any of the foregoing embodiments, for example, a hard disk or a memory of the terminal. The computer readable storage medium may also be an external storage device of the terminal, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the terminal. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal. The computer-readable storage medium is used for storing the computer program and other programs and data required by the terminal. The computer readable storage medium may also be used to temporarily store data that has been output or is to be output.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (11)

1. A data processing method based on a blockchain network, wherein the blockchain network comprises a plurality of nodes, the method comprising:

a node receives an invoicing request submitted by a client running on a user terminal, wherein the node is any one of the plurality of nodes;

the nodes respond to the invoicing request, allocate the invoice number sections by calling intelligent contracts and broadcast the allocated invoice number sections to other nodes in the plurality of nodes, wherein the intelligent contracts run on the virtual machine of any one node;

and after the node detects that the other nodes pass the consensus of the distributed invoice number segments, the node issues an invoice according to the distributed invoice number segments and transmits the issued invoice back to the client on the user terminal.

2. The method of claim 1, wherein the invoicing request carries transaction information, the transaction information including one or more of invoicer information, payee information, transaction amount, and transaction content.

3. The method as claimed in claim 2, wherein the invoicing request further carries a first digital certificate assigned by a tax office server, and before the node assigns the invoice number segment by invoking the intelligent contract in response to the invoicing request, the method further comprises:

the node verifies whether the first digital certificate is legal or not;

and if the first digital certificate is legal, the node executes the step of responding to the invoicing request and distributing the invoice number segment by calling an intelligent contract.

4. The method of claim 1, wherein before the node allocates an invoice number segment by invoking an intelligent contract in response to the invoicing request, the method further comprises:

the nodes receive the intelligent contracts broadcast by the tax office server to the blockchain network, the intelligent contracts being used for allocating invoice number segments, invoicing and managing the rights of the plurality of nodes.

5. The method of claim 2, wherein after the node invoices according to the allocated invoice number segment and returns the invoiced invoice to the client, the method further comprises:

and the node sends the transaction information to a tax office server so that the tax office server can store the transaction information, and the transaction information is used for a tax authority to inquire tax information.

6. The method of claim 1, wherein after the node invoices according to the allocated invoice number segment and returns the invoiced invoice to the client, the method further comprises:

the node writes the invoices into a block and broadcasts the block to other nodes;

after the other nodes agree on the block, the node adds the block to a block chain.

7. The method of claim 6, further comprising:

the node receives a tax information query request submitted by a client running on a tax bureau terminal, wherein the tax information query request carries identification information of a query object and a second digital certificate;

the node calls the intelligent contract to determine the query authority matched with the second digital certificate;

the node acquires the associated tax information of the query object matched with the query authority in the block chain according to the identification information of the query object;

and the node transmits the associated tax information back to the client on the tax bureau terminal.

8. The method according to claim 6 or 7, characterized in that the method further comprises:

the node receives feedback information aiming at the issued invoice sent by the client, wherein the feedback information indicates whether the content of the issued invoice is abnormal or not;

and if the feedback information indicates that the content of the issued invoice is abnormal, the node marks the issued invoice as invalid.

9. The method of claim 1, wherein the node assigning an invoice number segment in response to the invoicing request by invoking an intelligent contract comprises:

the node responds to the invoicing request to acquire a preset invoice number segment pool;

and the node randomly selects an invoice number segment from the preset invoice number segment pool by calling an intelligent contract.

10. A data processing apparatus, characterized in that the apparatus comprises:

the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for receiving an invoicing request submitted by a client running on a user terminal;

a number segment allocation unit, configured to allocate an invoice number segment by invoking an intelligent contract in response to the invoicing request, and broadcast the allocated invoice number segment to other nodes in the plurality of nodes, where the intelligent contract runs on a virtual machine of any one of the nodes;

the invoicing unit is used for issuing an invoice according to the allocated invoice number segment after the intelligent contract detects that the other nodes pass the consensus of the allocated invoice number segment;

and the output unit is used for transmitting the issued invoice back to the client on the user terminal.

11. A computer storage medium having stored therein instructions which, when run on a computer, cause the computer to execute the method for data processing based on a blockchain network according to any one of claims 1 to 9.