CN111292144A

CN111292144A - Bill processing method and device based on block chain network and storage medium

Info

Publication number: CN111292144A
Application number: CN202010076022.1A
Authority: CN
Inventors: 郑罗海
Original assignee: Tencent Technology Shenzhen Co Ltd
Current assignee: Tencent Technology Shenzhen Co Ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-06-16
Anticipated expiration: 2040-01-22
Also published as: CN111292144B

Abstract

The embodiment of the invention discloses a bill processing method, a bill processing device and a readable storage medium based on a block chain network, wherein the method comprises the following steps: acquiring an invoicing request sent by an enterprise terminal, wherein the invoicing request carries enterprise identification and invoicing application information of a target enterprise; determining abstract information of an enterprise identifier, and inquiring an asset field corresponding to a target enterprise in a block chain from a node of a block chain network according to the abstract information of the enterprise identifier, wherein the asset field is used for storing invoicing limit information of the target enterprise; comparing the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing authority or not; if the billing request has the billing authority, the corresponding electronic bill is made according to the billing application information, and the electronic bill is stored in the block chain. By the implementation mode, the automation and the intelligent control of the billing quantity and the billing amount of an enterprise can be realized, and the billing control efficiency is improved.

Description

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

Technical Field

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

Background

The tax bureau can limit the invoicing quantity and the invoicing amount of each enterprise within a certain time range according to the enterprise information of different enterprises, for example, the monthly invoicing quantity of a certain enterprise is limited to 50 according to the enterprise information of the enterprise, and the total invoicing amount does not exceed 1 ten thousand. At present, each enterprise mainly carries out manual statistics on total invoiced amount and invoicing amount after each invoicing, and then controls the invoicing amount and the invoicing amount according to the total invoiced amount and the invoicing amount obtained through statistics. However, the management and control method for manually counting the invoicing quantity and the invoicing amount takes a long time and is low in efficiency.

Disclosure of Invention

The embodiment of the invention provides a bill processing method, a bill processing device and a storage medium based on a block chain network, which are used for limiting the billing amount and the billing amount of an enterprise by acquiring the billing limit information of a target enterprise from an asset field corresponding to the target enterprise in the block chain network, thereby realizing the automatic and intelligent control of the billing amount and the billing amount of the enterprise and improving the billing control efficiency.

In a first aspect, an embodiment of the present invention provides a bill processing method based on a block chain network, which is applied to a tax terminal, and the method includes:

acquiring an invoicing request sent by an enterprise terminal, wherein the invoicing request carries an enterprise identifier and invoicing application information of a target enterprise;

determining abstract information of the enterprise identification, and inquiring an asset field corresponding to the target enterprise in the block chain from a node of the block chain network according to the abstract information of the enterprise identification, wherein the asset field is used for storing invoicing limit information of the target enterprise;

comparing the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing authority or not;

and if the billing request has the billing authority, issuing a corresponding electronic bill according to the billing application information, and storing the electronic bill into the block chain.

In a second aspect, an embodiment of the present invention provides another method for processing a ticket based on a blockchain network, where the method is applied to a node of the blockchain network, and the method includes:

acquiring an asset query notification sent by a tax terminal after receiving an invoicing request sent by an enterprise terminal, wherein the asset query notification carries abstract information of an enterprise identifier of a target enterprise, and the invoicing request carries the enterprise identifier of the target enterprise and invoicing application information;

inquiring an asset field corresponding to the target enterprise from a block chain according to the abstract information of the enterprise identification, wherein the asset field is used for storing the invoicing limit information of the target enterprise;

and sending the billing limit information of the target enterprise to the tax terminal so that the tax terminal determines whether the billing request has the billing authority or not according to the billing application information and the billing limit information, and if the billing request has the billing authority, billing a corresponding electronic bill according to the billing application information.

In a third aspect, an embodiment of the present invention provides a bill processing apparatus, which is applied to a tax terminal, where the apparatus includes:

the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring an invoicing request sent by an enterprise terminal, and the invoicing request carries enterprise identification and invoicing application information of a target enterprise;

the first query module is used for determining the abstract information of the enterprise identifier and querying an asset field corresponding to the target enterprise in the block chain from a node of the block chain network according to the abstract information of the enterprise identifier, wherein the asset field is used for storing the invoicing limit information of the target enterprise;

the comparison module is used for comparing the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing permission or not;

and the determining module is used for issuing a corresponding electronic bill according to the billing application information and storing the electronic bill into the block chain if the billing request has the billing authority.

In a fourth aspect, an embodiment of the present invention provides another ticket processing apparatus, which is applied to a node of a blockchain network, and the apparatus includes:

the system comprises a first acquisition module, a second acquisition module and a management module, wherein the first acquisition module is used for acquiring an asset query notification sent by a tax terminal after receiving an invoicing request sent by an enterprise terminal, the asset query notification carries abstract information of an enterprise identifier of a target enterprise, and the invoicing request carries the enterprise identifier of the target enterprise and invoicing application information;

the second query module is used for querying an asset field corresponding to the target enterprise from a block chain according to the abstract information of the enterprise identification, wherein the asset field is used for storing the invoicing limit information of the target enterprise;

and the sending module is used for sending the invoicing limit information of the target enterprise to the tax terminal so that the tax terminal determines whether the invoicing request has the invoicing authority or not according to the invoicing application information and the invoicing limit information, and if the invoicing request has the invoicing authority, corresponding electronic bills are invoiced according to the invoicing application information.

In a fifth aspect, an embodiment of the present invention provides a server, where the server includes: a processor and a memory, the processor to perform:

determining abstract information of the enterprise identification, and inquiring an asset field corresponding to the target enterprise in a blockchain from a node of a blockchain network according to the abstract information of the enterprise identification, wherein the asset field is used for storing invoicing limit information of the target enterprise;

In a sixth aspect, an embodiment of the present invention provides a node, where the node includes: a processor and a memory, the processor to perform:

In a seventh aspect, the present invention further provides a computer-readable storage medium, where program instructions are stored, and when executed, the program instructions are configured to implement the method according to the first aspect or the second aspect.

The embodiment of the invention determines the abstract information of the enterprise identification by acquiring the invoicing request sent by an enterprise terminal, wherein the invoicing request carries the enterprise identification and the invoicing application information of a target enterprise, inquires an asset field corresponding to the enterprise identification in a block chain from a node of a block chain network according to the abstract information of the enterprise identification, the asset field is used for storing the invoicing limit information of the target enterprise, compares the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing authority, and if the invoicing request has the invoicing authority, then invoicing a corresponding electronic bill according to the invoicing application information and storing the electronic bill into the block chain. Through the implementation mode, the automation and the intelligent control of the invoicing quantity and the invoicing amount of an enterprise can be realized, and the invoicing control efficiency is improved.

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 schematic structural diagram of a bill handling 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 method for processing a ticket based on a blockchain network according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of another method for processing a bill based on a blockchain network according to an embodiment of the present invention;

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

FIG. 5 is a schematic structural diagram of a bill handling apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of another bill handling apparatus provided in an embodiment of the present invention;

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

fig. 8 is a schematic structural diagram of a node according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly 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 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.

The bill processing method based on the blockchain network provided by the embodiment of the invention can be applied to a bill processing system, in some embodiments, the bill processing system comprises a tax terminal, a blockchain platform and an enterprise terminal, in some embodiments, the blockchain platform is the same as the blockchain network, and in some embodiments, the tax terminal is a server. In some embodiments, the tax terminal may establish a communication connection with a blockchain platform, an enterprise terminal. In some embodiments, the manner of the communication connection may include, but is not limited to, Wi-Fi, Bluetooth, Near Field Communication (NFC), and the like.

The following describes schematically a bill handling system according to an embodiment of the present invention with reference to fig. 1a to 1 c.

Referring to fig. 1a, fig. 1a is a schematic structural diagram of a bill processing system according to an embodiment of the present invention. The bill handling system includes: a block chain platform 11, an enterprise terminal 12 and a tax terminal 13. In some embodiments, the blockchain platform 11 and the tax terminal 13 may establish a communication connection through a wireless communication connection, wherein in some scenarios, the blockchain platform 11 and the tax terminal 13 may also establish a communication connection through a wired communication connection. In some embodiments, the tax terminal 13 may establish a communication connection with the enterprise terminal 12 through a wired or wireless communication connection. In some embodiments, the enterprise terminal 12 may include, but is not limited to, a smart terminal device such as a smart phone, a tablet computer, a laptop computer, a desktop computer, an in-vehicle smart terminal, and a smart watch. In some embodiments, the tax terminal 13 may be a server.

In one embodiment, the blockchain platform 11 refers to a network for performing data sharing between nodes, and the blockchain platform may include a plurality of nodes 111. Each node 111 may receive input information and maintain shared data (i.e., blockchains) within the blockchain platform based on the received input information while operating normally. In order To ensure information intercommunication in the blockchain platform, information connection may exist between each node, and Peer-To-Peer (Peer To Peer, P2P) communication may be implemented between any two nodes, and specifically, P2P communication may be performed through a wired communication link or a wireless communication link. For example, when any node in the blockchain platform 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 platform are consistent.

The tax terminal 13 has access to the blockchain platform 11 and can communicate with nodes in the blockchain platform 11. 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.

Each node in the blockchain platform 11 has a corresponding node identifier, and each node in the blockchain platform 11 may store node identifiers of other nodes in the blockchain platform, so that the generated block is broadcast to other nodes in the blockchain platform according to the node identifiers of other nodes in the blockchain platform. 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 table 1 only illustrates the IP address as an example.

TABLE 1

Node name	Node identification
		Node 1	117.114.151.174
Node 2	117.116.189.145
		…	…
Node N	119.123.789.258

Wherein each node in the blockchain platform stores one identical blockchain. The block chain is composed of a plurality of blocks, and referring to fig. 1b, fig. 1b is a schematic structural diagram of a block chain according to an embodiment of the present invention. 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 generating each block in the block chain, referring to fig. 1c, fig. 1c is a schematic diagram of a process for generating a new block according to an embodiment of the present invention. When the node where the block chain is located receives input information, verifying the input information, storing the input information into a memory pool after the verification is completed, and updating a hash tree for recording the input information; 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 platform where the newly generated blocks are located according to the node identifications of the other nodes in the block chain platform, 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 nodes of the blockchain platform 11 may run an intelligent contract, the intelligent contract is implemented by a code executed when a certain condition is satisfied, and a developer may define a contract logic through a programming language, issue the contract logic to the blockchain (intelligent contract registration), call a key or trigger execution of other events according to the logic of contract terms, complete the contract logic, and provide functions of upgrading and deregistering the intelligent contract.

The following describes schematically a bill processing method based on a block chain network according to an embodiment of the present invention with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a schematic flowchart of a bill processing method based on a block chain network according to an embodiment of the present invention, where the bill processing method based on a block chain network according to an embodiment of the present invention may be executed by a bill processing apparatus, where the bill processing apparatus is disposed in a tax terminal, and a specific explanation of the tax terminal is as described above. Specifically, the method of the embodiment of the present invention includes the following steps.

S201: acquiring an invoicing request sent by an enterprise terminal, wherein the invoicing request carries enterprise identification and invoicing application information of a target enterprise.

In the embodiment of the invention, the tax terminal can acquire the invoicing request sent by the enterprise terminal, wherein the invoicing request carries the enterprise identification and the invoicing application information of the target enterprise. In some embodiments, the enterprise identification may include, but is not limited to, any one or more of a name of the target enterprise, a universal identification number, and the like.

In one embodiment, before acquiring an invoicing request sent by an enterprise terminal, a tax terminal may acquire a registration request sent by the enterprise terminal, where the registration request carries an enterprise identifier, and query, according to the enterprise identifier, enterprise information of a target enterprise corresponding to the enterprise identifier, where the enterprise information includes one or more of enterprise scale information, asset information, and production and management data; and determining the total amount of the invoicing quantity and the total amount of the invoicing amount corresponding to the target enterprise according to the enterprise information, taking the total amount of the invoicing quantity as the remaining invoicing quantity corresponding to the target enterprise, and writing the total amount of the invoicing quantity, the remaining invoicing quantity and the total amount of the invoicing amount into an asset field corresponding to the enterprise identifier in the block chain.

Through the implementation mode, the corresponding total amount of the invoicing quantity and the corresponding total amount of the invoicing amount can be determined according to enterprise information of different enterprises, and the total amount of the invoicing quantity, the remaining invoicing quantity and the total amount of the invoicing amount are written into the asset field corresponding to the enterprise identification in the block chain, so that the effectiveness of the total amount of the invoicing quantity, the remaining invoicing quantity and the total amount of the invoicing amount in the asset field can be ensured.

S202: and determining the abstract information of the enterprise identification, and inquiring an asset field corresponding to the target enterprise in the block chain from a node of the block chain network according to the abstract information of the enterprise identification, wherein the asset field is used for storing the invoicing limit information of the target enterprise.

In the embodiment of the invention, the tax terminal can determine the abstract information of the enterprise identifier, and inquire the asset field corresponding to the target enterprise in the block chain from the node of the block chain network according to the abstract information of the enterprise identifier, wherein the asset field is used for storing the invoicing limit information of the target enterprise. In some embodiments, the billing limit information includes a total amount of billing amount, a remaining billing amount, and a total amount of billing amount. For example, the total amount of the invoicing amount stored in the property field is 100, and the total amount of the invoicing amount is 20000 yuan.

In an embodiment, when determining the summary information of the enterprise identifier, the tax terminal may determine the summary information of the enterprise identifier according to a preset corresponding relationship between the summary information and the enterprise identifier. In some embodiments, the summary information may be calculated in advance according to a preset summary algorithm. In certain embodiments, the digest information includes, but is not limited to, a hash value.

In one embodiment, after querying an asset field corresponding to the enterprise identifier in a block chain from a node of the block chain network, the tax terminal may obtain the invoicing limit information of the target enterprise stored in the asset field, and determine whether the invoicing request has the invoicing authority according to the invoicing application information and the invoicing limit information. In some embodiments, the asset field stores the billing limit information within a specified time range, in some embodiments, the specified time range information is carried in the billing limit information, in some embodiments, the specified time range includes, but is not limited to, any one or more of daily, monthly, yearly, etc., in one example, the asset field stores the billing limit information of the target enterprise monthly.

S203: and comparing the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing permission or not.

In the embodiment of the invention, the tax terminal can compare the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing permission.

In one embodiment, the invoicing application information comprises a target invoicing quantity and a target invoicing amount, and the invoicing limit information comprises a remaining invoicing quantity and an invoicing amount total amount; and the tax terminal compares the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing authority, can compare the residual invoicing quantity with the target invoicing quantity, and if the target invoicing quantity is less than or equal to the residual invoicing quantity, determines whether the invoicing request has the invoicing authority according to the target invoicing amount and the total amount of the invoicing amount.

For example, assuming that the target billing amount is 2, if the remaining billing amount is 2 and the target billing amount 2 is equal to the remaining billing amount 2, it may be further determined whether the billing request has a billing right according to the target billing amount and the total amount of billing amount.

In one embodiment, when the tax terminal compares the remaining invoicing quantity with the target invoicing quantity, if the target invoicing quantity is greater than the remaining invoicing quantity, the tax terminal determines that the invoicing request does not have the invoicing permission.

For example, if the target billing amount is 4, the remaining billing amount is 2, and the target billing amount 4 is greater than the remaining billing amount 2, it may be determined that the billing request does not have the billing authority.

In one embodiment, when the tax terminal compares the remaining invoicing quantity with the target invoicing quantity, if the target invoicing quantity is greater than the remaining invoicing quantity, sending an overproof invoicing quantity notification to an enterprise terminal, wherein the overproof invoicing quantity notification carries the remaining invoicing quantity, and if a confirmation instruction of the enterprise terminal for issuing the electronic bill corresponding to the remaining invoicing quantity sent by the overproof invoicing quantity notification is obtained, allowing the electronic bill corresponding to the remaining invoicing quantity to be issued.

For example, if the target billing amount is 4, the remaining billing amount is 2, and the target billing amount 4 is greater than the remaining billing amount 2, sending a notification that the billing amount exceeds the standard to the enterprise terminal, where the notification that the billing amount exceeds the standard carries the remaining billing amount 2, and if a confirmation instruction of the enterprise terminal for issuing the electronic ticket corresponding to the remaining billing amount 2 sent by the notification that the billing amount exceeds the standard is obtained, allowing to issue 2 electronic tickets.

In an embodiment, the invoicing application information sent by the enterprise terminal may carry a target invoicing time for the enterprise terminal to request the tax terminal to make an electronic bill for the enterprise corresponding to the enterprise terminal, before the tax terminal compares the remaining invoicing amount with the target invoicing amount, the tax terminal may obtain the target invoicing time carried in the invoicing application information, and compare the target invoicing time with a specified time range in the asset field, if the target invoicing time is within the specified time range, compare the remaining invoicing amount with the target invoicing amount.

In one embodiment, if the target billing time is not within the specified time range, the target billing amount needs to be compared with the remaining billing amount in the asset field within the time range in which the target billing time is located at the target billing time. By this embodiment, flexibility in control of invoicing may be improved.

For example, assuming that the specified time range in the asset field of the target enterprise is 15 th to 14 th of the next month, if the current time is 1 th 15 and the target billing time carried in the billing application information of the target enterprise is 2 th 18, it may be determined that the target billing time corresponding to the billing application information sent by the target enterprise is 2 th 15 th to 3 th 14 th, so that the target billing amount carried in the billing application information of the target enterprise needs to be compared with the remaining billing amount in the asset field in the time range of 2 th 15 th to 2 th 18 th of day at 2 th 18 th.

In one embodiment, when determining whether the invoicing request has the invoicing authority according to the target invoicing amount and the total amount of the invoicing amount, the tax terminal can obtain the total amount of the invoicing recorded in the intelligent contract, determine the remaining total amount of the invoicing according to the total amount of the invoicing amount and the total amount of the invoicing, compare the target invoicing amount with the remaining total amount of the invoicing, and determine that the invoicing request has the invoicing authority if the target invoicing amount is smaller than or equal to the remaining total amount of the invoicing.

For example, assuming that the total amount of invoicing is 1000, if the total amount of invoiced amount obtained by the tax terminal from the intelligent contract is 900 and the target total amount of invoiced amount is 50, the remaining total amount of invoiced amount may be determined to be 100 according to the total amount of invoiced amount 1000 and the total amount of invoiced amount 900, so as to compare the target total amount of invoiced amount 50 with the remaining total amount of invoiced amount 100, obtain that the target total amount of invoiced amount 50 is less than the remaining total amount of invoiced amount 100, and thus determine that the invoiced request has the authority of invoiced.

In one embodiment, when determining whether the invoicing request has the invoicing authority according to the target invoicing amount and the total amount of the invoicing amount, the tax terminal can obtain the total amount of the invoicing recorded in the intelligent contract, determine the remaining total amount of the invoicing according to the total amount of the invoicing amount and the total amount of the invoicing, compare the target invoicing amount with the remaining total amount of the invoicing, and determine that the invoicing request does not have the invoicing authority if the target invoicing amount is larger than the remaining total amount of the invoicing.

For another example, assuming that the total amount of invoicing is 1000, if the total amount of invoiced amount obtained by the tax terminal from the intelligent contract is 900 and the target total amount of invoiced amount is 200, the remaining total amount of invoiced amount may be determined to be 100 according to the total amount of invoiced amount 1000 and the total amount of invoiced amount 900, so as to compare the target total amount of invoiced amount 200 with the remaining total amount of invoiced amount 100, obtain that the target total amount of invoiced amount 200 is greater than the remaining total amount of invoiced amount 100, and thus determine that the invoiced request does not have the authority of invoiced.

In an embodiment, before issuing a corresponding electronic bill according to the invoicing application information and storing the electronic bill in the block chain, the tax terminal may further obtain a total amount of invoiced bills recorded in an intelligent contract, determine a remaining total amount of invoiced bills according to the total amount of the invoiced bills and the total amount of invoiced bills, compare the target total amount of invoiced bills with the remaining total amount of invoiced bills, and if the target total amount of invoiced bills is less than or equal to the remaining total amount of invoiced bills, determine whether the invoicing request has the invoiced permission further according to the remaining amount of invoiced bills and the target amount of invoiced bills. The embodiment of the invention does not specifically limit the sequence of the detection target billing amount and the detection target billing quantity.

By the implementation mode, when the target invoicing amount in the invoicing application information of the target enterprise is less than or equal to the residual invoicing total amount and the target invoicing amount is less than or equal to the residual invoicing amount, the invoicing request is determined to have the invoicing authority, so that the automation and intelligent control of enterprise invoicing is realized.

S204: and if the billing request has the billing authority, issuing a corresponding electronic bill according to the billing application information, and storing the electronic bill into the block chain.

In the embodiment of the invention, if the tax terminal determines that the invoicing request has the invoicing authority, the tax terminal issues the corresponding electronic bill according to the invoicing application information and stores the electronic bill into the block chain.

In one embodiment, after issuing a corresponding electronic bill according to the invoicing application information, the tax terminal may send an asset change transaction to a node in the block chain network, where the asset change transaction includes the target invoicing amount and the target invoicing amount, and the asset change transaction is used for the node to adjust the remaining invoicing amount stored in the asset field according to the target invoicing amount and to adjust the total invoiced amount recorded in the intelligent contract according to the target invoicing amount. The reliability of the asset change transaction is ensured by chaining the asset change transaction, the remaining invoicing quantity of the asset field and the total invoiced amount recorded in the intelligent contract are adjusted by the node of the block chain, the efficiency of adjusting the remaining invoicing quantity and the total invoiced amount is improved, the accuracy of the remaining invoiced quantity and the total invoiced amount is ensured, and the accuracy of controlling the invoiced is improved.

For example, assuming that the target billing amount included in the asset change transaction is 1 and the target billing amount is 200, if the billed amount stored in the asset field is 0, the remaining billing amount is 100, the total amount of the billed amount is 1000, and the total amount of the billed amount is 600, the node may subtract 1 from the remaining billing amount stored in the asset field according to the target billing amount 1 to obtain an adjusted remaining billed amount of 99, and add 200 to the total amount of the billed 600 recorded in the intelligent contract according to the target billing amount 200 to obtain an adjusted total amount of the billed 800.

The embodiment of the invention obtains the billing request sent by the enterprise terminal, wherein the billing request carries the enterprise identification and billing application information of the target enterprise; determining abstract information of the enterprise identification, and inquiring an asset field corresponding to the target enterprise in the block chain from a node of the block chain network according to the abstract information of the enterprise identification, wherein the asset field is used for storing invoicing limit information of the target enterprise; and comparing the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing permission, if so, issuing a corresponding electronic bill according to the invoicing application information, and storing the electronic bill into the block chain. By the implementation mode, the automation and the intelligent control of the billing quantity and the billing amount of an enterprise can be realized, and the billing control efficiency is improved.

Referring to fig. 3 specifically, fig. 3 is a schematic flowchart of another method for processing a bill based on a blockchain network according to an embodiment of the present invention, where the method for processing a bill based on a blockchain network according to an embodiment of the present invention can be executed by a bill processing apparatus, where the bill processing apparatus is disposed in a node of the blockchain network, and a specific explanation of the node is as described above. Specifically, the method of the embodiment of the present invention includes the following steps.

S301: the method comprises the steps of obtaining an asset query notice sent by a tax terminal after receiving an invoicing request sent by an enterprise terminal, wherein the asset query notice carries abstract information of an enterprise identifier of a target enterprise, and the invoicing request carries the enterprise identifier of the target enterprise and invoicing application information.

In the embodiment of the invention, the node can acquire an asset query notification sent by the tax terminal after receiving an invoicing request sent by the enterprise terminal, wherein the asset query notification carries abstract information of an enterprise identifier of a target enterprise, and the invoicing request carries the enterprise identifier of the target enterprise and invoicing application information.

In some embodiments, the billing application information includes a target billing amount and a target billing amount, and the billing limit information includes a remaining billing amount and a total amount of the billing amount.

S302: and inquiring an asset field corresponding to the target enterprise from a block chain according to the abstract information of the enterprise identification, wherein the asset field is used for storing the invoicing limit information of the target enterprise.

In the embodiment of the present invention, the node may query, from the block chain, an asset field corresponding to the target enterprise according to the summary information of the enterprise identifier, where the asset field is used to store the billing restriction information of the target enterprise. In some implementations, the billing limit information includes a remaining billing amount and a billing amount total.

S303: and sending the billing limit information of the target enterprise to the tax terminal so that the tax terminal determines whether the billing request has the billing authority or not according to the billing application information and the billing limit information, and if the billing request has the billing authority, billing a corresponding electronic bill according to the billing application information.

In the embodiment of the invention, the node can send the invoicing limit information of the target enterprise to the tax terminal, so that the tax terminal determines whether the invoicing request has the invoicing authority or not according to the invoicing application information and the invoicing limit information, and if the invoicing request is determined to have the invoicing authority, corresponding electronic bills are invoiced according to the invoicing application information.

In one embodiment, after the node sends the invoicing limit information of the target enterprise to the tax terminal, the node may receive an asset change transaction sent by the tax terminal, where the asset change transaction includes the target invoicing amount and the target invoicing amount, and after the asset change transaction is verified, adjust the remaining invoicing amount stored in the asset field according to the target invoicing amount, and adjust the total invoiced amount recorded in the intelligent contract according to the target invoicing amount. The asset change transaction is subjected to consensus verification through the node of the block chain, the reliability of the asset change transaction is ensured, and the accuracy of the adjustment of the remaining invoicing quantity and the total invoicing amount is improved by adjusting the remaining invoicing quantity and the total invoicing amount after the consensus verification is passed.

The embodiment of the invention can acquire the asset query notice sent by the tax terminal after receiving the invoicing request sent by the enterprise terminal, the asset query notification carries abstract information of an enterprise identifier of a target enterprise, the invoicing request carries the enterprise identifier of the target enterprise and invoicing application information, and inquiring an asset field corresponding to the target enterprise from a block chain according to the abstract information of the enterprise identification, wherein the asset field is used for storing the invoicing limit information of the target enterprise, and sending the billing limit information of the target enterprise to the tax terminal so that the tax terminal determines whether the billing request has the billing authority or not according to the billing application information and the billing limit information, and if the billing request is determined to have the billing authority, the corresponding electronic bill is made according to the billing application information. By the implementation mode, the automation and the intelligent control of the billing quantity and the billing amount of an enterprise can be realized, and the billing control efficiency is improved.

Referring to fig. 4, fig. 4 is a schematic flowchart of a bill processing interaction method based on a blockchain network according to an embodiment of the present invention, where the bill processing interaction method based on a blockchain network according to an embodiment of the present invention may be executed by a bill processing system, where the bill processing system includes a blockchain platform, a tax terminal, and an enterprise terminal. Specifically, the method of the embodiment of the present invention includes the following steps.

S401: the tax terminal acquires an invoicing request sent by the enterprise terminal, wherein the invoicing request carries enterprise identification and invoicing application information of a target enterprise.

In the embodiment of the invention, the tax terminal acquires the invoicing request sent by the enterprise terminal, wherein the invoicing request carries the enterprise identification and the invoicing application information of the target enterprise.

S402: and the tax terminal sends an asset query notification to a node of the block link network, wherein the asset query notification carries abstract information of the enterprise identifier of the target enterprise.

In the embodiment of the invention, the tax terminal can send an asset query notification to the node of the block link network, wherein the asset query notification carries abstract information of the enterprise identifier of the target enterprise.

S403: and the node acquires an asset query notification sent by the tax terminal after receiving an invoicing request sent by the enterprise terminal, and queries an asset field corresponding to the target enterprise from a block chain according to the abstract information of the enterprise identifier, wherein the asset field is used for storing the invoicing limit information of the target enterprise.

In the embodiment of the invention, the node can acquire the asset query notification sent by the tax terminal after receiving the invoicing request sent by the enterprise terminal, and query the asset field corresponding to the target enterprise from the block chain according to the abstract information of the enterprise identification, wherein the asset field is used for storing the invoicing limit information of the target enterprise.

S404: and the node sends the invoicing limit information of the target enterprise to the tax terminal.

In the embodiment of the invention, the node can send the invoicing limit information of the target enterprise to the tax terminal.

S405: and if the tax terminal determines that the invoicing request has the invoicing authority according to the invoicing application information and the invoicing limit information, issuing a corresponding electronic bill according to the invoicing application information.

In the embodiment of the invention, if the tax terminal determines that the invoicing request has the invoicing authority according to the invoicing application information and the invoicing limit information, the tax terminal can issue the corresponding electronic bill according to the invoicing application information.

S406: and the tax terminal sends the electronic bill to a node of the block chain network and stores the electronic bill into the block chain.

In the embodiment of the invention, the tax terminal can send the electronic bill to the node of the block chain network to be stored in the block chain.

The embodiment of the invention determines the abstract information of the enterprise identification by acquiring the invoicing request sent by an enterprise terminal, wherein the invoicing request carries the enterprise identification and the invoicing application information of a target enterprise, inquires an asset field corresponding to the enterprise identification in a block chain from a node of a block chain network according to the abstract information of the enterprise identification, the asset field is used for storing the invoicing limit information of the target enterprise, compares the invoicing application information with the invoicing limit information to determine whether the invoicing request has the invoicing authority, and if the invoicing request is determined to have the invoicing authority, the corresponding electronic bill is invoiced according to the invoicing application information and is stored in the block chain. Through the implementation mode, the automation and the intelligent control of the invoicing quantity and the invoicing amount of an enterprise can be realized, and the invoicing control efficiency is improved.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a bill processing apparatus according to an embodiment of the present invention. Specifically, the device sets up in tax terminal, the device includes: a first obtaining module 501, a first inquiring module 502 and a determining module 503;

a first obtaining module 501, configured to obtain an invoicing request sent by an enterprise terminal, where the invoicing request carries an enterprise identifier of a target enterprise and invoicing application information;

a first query module 502, configured to determine summary information of the enterprise identifier, and query, according to the summary information of the enterprise identifier, an asset field corresponding to the target enterprise in a block chain from a node of the block chain network, where the asset field is used to store invoice restriction information of the target enterprise;

a comparing module 503, configured to compare the invoicing application information with the invoicing limiting information to determine whether the invoicing request has an invoicing permission;

a determining module 504, configured to issue a corresponding electronic ticket according to the billing application information and store the electronic ticket in the block chain if the billing request has a billing right.

Furthermore, the invoicing application information comprises a target invoicing quantity and a target invoicing amount, and the invoicing limit information comprises a residual invoicing quantity and an invoicing amount total amount; the comparing module 503 compares the invoicing application information with the invoicing limit information to determine whether the invoicing request has an invoicing right, and is specifically configured to:

comparing the residual billing quantity with the target billing quantity;

and if the target billing amount is less than or equal to the residual billing amount, determining whether the billing request has a billing authority or not according to the target billing amount and the total billing amount.

Further, when the comparing module 503 determines whether the billing request has the billing right according to the target billing amount and the total amount of the billing amount, it is specifically configured to:

acquiring the total amount of invoiced money recorded in the intelligent contract;

determining the remaining total amount of invoicing according to the total amount of invoicing and the total amount of invoicing;

comparing the target invoicing amount with the remaining total invoicing amount;

and if the target billing amount is less than or equal to the remaining billing total amount, determining that the billing request has a billing authority.

Further, after issuing the corresponding electronic ticket according to the billing application information, the determining module 504 is further configured to:

and sending an asset change transaction to a node in the block chain network, wherein the asset change transaction comprises the target billing amount and the target billing amount, and the asset change transaction is used for adjusting the residual billing amount stored in the asset field by the node according to the target billing amount and adjusting the total billed amount recorded in the intelligent contract according to the target billing amount.

Further, before the first obtaining module 501 obtains the invoicing request sent by the enterprise terminal, it is further configured to:

acquiring a registration request sent by the enterprise terminal, wherein the registration request carries the enterprise identifier;

inquiring enterprise information of a target enterprise corresponding to the enterprise identification according to the enterprise identification, wherein the enterprise information comprises one or more of enterprise scale information, asset information and production and management data;

determining the total amount of the invoicing quantity and the total amount of the invoicing amount corresponding to the target enterprise according to the enterprise information, and taking the total amount of the invoicing quantity as the remaining invoicing quantity corresponding to the target enterprise;

and writing the total amount of the invoicing quantity, the residual invoicing quantity and the total amount of the invoicing amount into an asset field corresponding to the target enterprise in the block chain.

Referring to fig. 6, fig. 6 is a schematic structural diagram of another bill handling device according to an embodiment of the present invention. Specifically, the apparatus is disposed in a node of a block chain network, and the apparatus includes: a second obtaining module 601, a second querying module 602, and a sending module 603;

a second obtaining module 601, configured to obtain an asset query notification sent by a tax terminal after receiving an invoicing request sent by an enterprise terminal, where the asset query notification carries summary information of an enterprise identifier of a target enterprise, and the invoicing request carries the enterprise identifier of the target enterprise and invoicing application information;

a second query module 602, configured to query, according to the summary information of the enterprise identifier, an asset field corresponding to the target enterprise from a block chain, where the asset field is used to store the billing restriction information of the target enterprise;

the sending module 603 is configured to send the billing limit information of the target enterprise to the tax terminal, so that the tax terminal determines whether the billing request has a billing authority according to the billing application information and the billing limit information, and if the billing request has the billing authority, the corresponding electronic bill is billed according to the billing application information.

Furthermore, the invoicing application information comprises a target invoicing quantity and a target invoicing amount, and the invoicing limit information comprises a residual invoicing quantity and an invoicing amount total amount; after the sending module 603 sends the billing restriction information of the target enterprise to the tax terminal, the sending module is further configured to:

receiving an asset change transaction sent by the tax terminal, wherein the asset change transaction comprises the target invoicing quantity and the target invoicing amount;

and after the asset change transaction consensus is verified, adjusting the residual invoicing quantity stored in the asset field according to the target invoicing quantity, and adjusting the total invoiced sum recorded in the intelligent contract according to the target invoicing sum.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a server according to an embodiment of the present invention. Specifically, the server corresponds the same with the foregoing tax terminal, and the server includes: memory 701, processor 702.

In one embodiment, the server further includes a data interface 703, and the data interface 703 is used for transferring data information between the server and other devices.

The memory 701 may include a volatile memory (volatile memory); the memory 701 may also include a non-volatile memory (non-volatile memory); the memory 701 may also comprise a combination of memories of the kind described above. The processor 702 may be a Central Processing Unit (CPU). The processor 702 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), or any combination thereof.

The memory 701 is used for storing programs, and the processor 702 may call the programs stored in the memory 701 to execute the following steps:

Furthermore, the invoicing application information comprises a target invoicing quantity and a target invoicing amount, and the invoicing limit information comprises a residual invoicing quantity and an invoicing amount total amount; the processor 702 compares the invoicing application information with the invoicing limit information to determine whether the invoicing request has an invoicing right, and is specifically configured to:

comparing the residual billing quantity with the target billing quantity;

Further, when the processor 702 determines whether the billing request has the billing right according to the target billing amount and the total billing amount, it is specifically configured to:

Further, after issuing the corresponding electronic ticket according to the billing application information, the processor 702 is further configured to:

Further, before the processor 702 obtains the invoicing request sent by the enterprise terminal, it is further configured to:

Referring to fig. 8, fig. 8 is a schematic structural diagram of a node according to an embodiment of the present invention. Specifically, the node includes: memory 801, processor 802.

In one embodiment, the node further comprises a data interface 803, and the data interface 803 is used for transmitting data information between the node and other devices.

The memory 801 may include a volatile memory (volatile memory); the memory 801 may also include a non-volatile memory (non-volatile memory); the memory 801 may also comprise a combination of memories of the kind described above. The processor 802 may be a Central Processing Unit (CPU). The processor 802 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), or any combination thereof.

The memory 801 is used for storing programs, and the processor 802 can call the programs stored in the memory 801 for executing the following steps:

The billing application information comprises a target billing amount and a target billing amount, and the billing limit information comprises a residual billing amount and a total amount of the billing amount; after the processor 802 sends the billing restriction information of the target enterprise to the tax terminal, the processor is further configured to:

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the method described in the embodiment corresponding to fig. 2, fig. 3, or fig. 4 of the present invention, and may also implement the apparatus in the embodiment corresponding to the present invention described in fig. 5 or fig. 6, which is not described herein again.

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

While the invention has been described with reference to a number of embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A bill processing method based on a block chain network is characterized by being applied to a tax terminal, and the method comprises the following steps:

2. The method of claim 1, wherein the invoicing application information comprises a target invoicing quantity and a target invoicing amount, and the invoicing limit information comprises a remaining invoicing quantity and an invoicing amount total amount; the comparing the billing application information with the billing limit information to determine whether the billing request has a billing right includes:

comparing the residual billing quantity with the target billing quantity;

3. The method of claim 2, wherein the determining whether the billing request has billing authority according to the target billing amount and the total amount of the billing amount comprises:

4. The method according to any one of claims 1 to 3, wherein after issuing the corresponding electronic ticket according to the billing application information, the method further comprises:

5. The method according to claim 2 or 3, wherein before the obtaining of the invoicing request sent by the enterprise terminal, the method further comprises:

6. A bill processing method based on a block chain network is applied to a node of the block chain network, and the method comprises the following steps:

7. The method of claim 6, wherein the invoicing application information comprises a target invoicing quantity and a target invoicing amount, and the invoicing limit information comprises a remaining invoicing quantity and an invoicing amount total amount; after the invoice limit information of the target enterprise is sent to the tax terminal, the method further comprises the following steps:

8. A bill processing device, which is applied to a tax terminal, the device comprising:

9. A ticket processing apparatus, for use in a node of a blockchain network, the apparatus comprising:

10. A computer-readable storage medium, having stored thereon program instructions for implementing the method of any one of claims 1-7 when executed.