CN110751528A - Method and system for generating block chain electronic invoice code number by intelligent contract - Google Patents

Method and system for generating block chain electronic invoice code number by intelligent contract Download PDF

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Publication number
CN110751528A
CN110751528A CN201910816258.1A CN201910816258A CN110751528A CN 110751528 A CN110751528 A CN 110751528A CN 201910816258 A CN201910816258 A CN 201910816258A CN 110751528 A CN110751528 A CN 110751528A
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China
Prior art keywords
invoicing
invoice
transaction
intelligent contract
block chain
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Pending
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CN201910816258.1A
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Chinese (zh)
Inventor
何丽
王申
张盼
李立宁
赵林
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Aisino Corp
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Aisino Corp
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Priority to CN201910816258.1A priority Critical patent/CN110751528A/en
Publication of CN110751528A publication Critical patent/CN110751528A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00Commerce
    • G06Q30/04Billing or invoicing
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/38Payment protocols; Details thereof
    • G06Q20/389Keeping log of transactions for guaranteeing non-repudiation of a transaction
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/04Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange

Abstract

The invention discloses a method for generating a blockchain electronic invoice code number by an intelligent contract, which comprises the following steps: acquiring an invoice code and an invoice number section distributed by a tax bureau; establishing an invoicing application transaction, calling an intelligent contract invoicing application interface to carry out invoicing rule verification, generating an electronic invoice and submitting the electronic invoice to network consensus; after network consensus is achieved, writing the invoicing application transaction into a block chain account book; establishing an invoicing submission transaction, calling an intelligent contract invoicing submission interface, and acquiring a continuous unique sequence number of the invoicing application transaction on a block chain account book; performing one-to-one mapping on the sequence number, the invoice code and the invoice number segment to generate a unique invoice code and a continuous unique invoice number under the same invoice code; the invention solves the technical difficulty that the intelligent contract concurrently generates the continuous and unique invoice number, and is beneficial to the landing of the block chain electronic invoice application of tax-control-free equipment.

Description

Method and system for generating block chain electronic invoice code number by intelligent contract
Technical Field
The invention relates to the field of electronic invoice generation, in particular to a method and a system for generating a blockchain electronic invoice code number by an intelligent contract.
Background
The electronic invoice application based on the block chain technology can realize data sharing in the electronic invoice circulation process and solve the problem of repeated reimbursement and posting of the electronic invoice. The block chain based electronic invoice application comprises two types, wherein one type is that an electronic invoice is generated outside a block chain, and a data writing interface of an intelligent contract of the block chain is called to write the electronic invoice into the block chain; and the other method is that an electronic invoice is generated by an intelligent contract of the block chain and is directly written into the block chain.
The electronic invoice generated outside the chain is usually generated by tax control equipment, and the tax control equipment ensures that the invoice cannot be forged; the electronic invoice generated by the intelligent block chain contract is written into the block chain after being identified in the whole network, and the identification mechanism and the cryptographic technology of the block chain ensure that the invoice cannot be forged and tampered; the intelligent contract generates the electronic invoice, is digitalized in the whole process, does not need hardware equipment, saves the cost of the hardware equipment, and is more suitable for small and micro enterprises.
The block chain based electronic invoice application is based on block chain alliance chain technology. The most widely used blockchain alliance chain architecture is the open source HyperLegend Fabric architecture. The trade flow of Fabric is as follows:
1. the user sends a transaction proposal to the endorsement node;
2. the endorsement node executes an intelligent contract, simulates transaction and outputs a simulation result containing a read-write set;
3. the endorsement node carries out endorsement signature on the simulation result and returns the endorsement signature to the user;
4. after receiving the endorsement signature, the user verifies the correctness of the signature and then sends a transaction request to a sequencing node;
5. after the sequencing node sequences the transactions, a transaction generation block is packaged;
6. the sequencing node broadcasts the block to the whole network;
7. after receiving the block, the nodes in the network verify whether the endorsement signature is correct or not, whether the endorsement policy is met or not, verify whether the kv value in the reading set is consistent with the kv value in the current world state or not, if so, the transaction is marked as valid, the kv value in the world state is updated by the kv value in the writing set, and the block is written into the account book. If the verification is not passed, the transaction is marked as invalid transaction, the world state is not updated, and the block is written into the account book.
In the above flow, if the user sends a transaction proposal concurrently to update the same key value of the world state, because the read record set during transaction simulation is inconsistent with the read record set during transaction posting, only the first transaction written in the ledger can be successful in all the transactions concurrently updating the same key, and the rest of the transactions fail.
When a user uses a key of the world state of the fabric to record the current invoice number, when the user calls an intelligent contract to invoice, the current value of the key is read as the invoice number, the current value is added by one to generate the next invoice number, and the key value is updated. The above-mentioned transaction failure problem exists if the user concurrently invokes the intelligent contract for invoicing.
Disclosure of Invention
In order to solve the problem that the prior art in the background art cannot generate continuously unique invoice numbers concurrently, the invention provides a method for generating blockchain electronic invoice code numbers by intelligent contracts, which comprises the following steps:
acquiring an invoice code and an invoice number section distributed by a tax bureau according to a preset rule;
establishing an invoicing application transaction; the establishing of the invoicing application transaction comprises the steps of calling an intelligent contract invoicing application interface, and generating electronic invoice submitting network consensus after the invoicing application transaction is subjected to invoicing rule verification; after network consensus is achieved, writing the invoicing application transaction into a block chain account book; the invoicing application transaction has a continuous unique sequence on the blockchain ledger;
establishing an invoicing submission transaction; the establishing of the invoicing submission transaction comprises calling an intelligent contract invoicing submission interface to obtain an ordered continuous unique sequence number of the invoicing application transaction on a block chain account book; and carrying out one-to-one mapping on the sequence number, the invoice code and the invoice number segment to generate a unique invoice code, and carrying out network consensus verification on the continuous unique invoice numbers under the same invoice code.
Further, the acquiring the invoice code distributed by the tax bureau and the number section of the invoice number according to the preset rule includes:
and calling an intelligent contract number source distribution interface to write the invoice codes distributed by the tax bureau and the number sections of the invoice numbers into the block chain.
Furthermore, the sequence number is obtained through calculation after traversing and retrieving all invoicing applications and transactions on the block chain account book through the intelligent contract invoicing submission interface.
Further, the establishing an application transaction for making out an invoice and the establishing a submission transaction for making out an invoice may be performed concurrently.
Further, the establishment of the invoicing application transaction and the establishment of the invoicing submission transaction may be requested from any node in the blockchain.
The system for generating the blockchain electronic invoice code number by the intelligent contract comprises the following components:
the system comprises a preset parameter obtaining unit, a transaction processing unit and a transaction processing unit, wherein one end of the preset parameter obtaining unit is connected with the invoicing submission transaction unit; the acquiring preset parameter unit is used for acquiring an invoice code and an invoice number segment distributed by a tax bureau according to a preset rule and sending the invoice code and the invoice number segment to the invoicing submitting transaction unit;
the system comprises a billing application transaction unit, a billing management unit and a billing management unit, wherein the billing application transaction unit is used for calling an intelligent contract billing application interface, and generating electronic invoice submission network consensus after the billing application transaction passes the validation of billing rules; after network consensus is achieved, writing the invoicing application transaction into a block chain account book; the invoicing application transaction has a continuous unique sequence on the blockchain ledger;
the system comprises an invoicing submitting transaction unit, an invoicing applying transaction unit and a block chain account book, wherein the invoicing applying transaction unit is used for calling an intelligent contract invoicing submitting interface and acquiring ordered continuous unique sequence numbers of the invoicing applying transaction on the block chain account book; and carrying out one-to-one mapping on the sequence number, the invoice code and the invoice number segment to generate a unique invoice code and a continuous unique invoice number under the same invoice code.
Further, the invoicing application transaction unit comprises:
the billing rule verification module is connected with the network consensus module at one end; the invoicing rule verification module is used for calling an intelligent contract invoicing application interface, performing invoicing rule verification on the invoicing application transaction, generating an electronic invoice after the verification is passed, and submitting the electronic invoice to the network consensus module;
the network consensus module is connected with the block chain account book at one end; the network consensus module is used for carrying out network consensus verification on the electronic invoice applied for invoicing, and writing the invoicing application transaction into a block chain account book after network consensus is achieved; the invoicing application transactions have a continuous unique order on the blockchain ledger.
Furthermore, the sequence number is obtained through calculation after traversing and retrieving all invoicing applications and transactions on the block chain account book through the intelligent contract invoicing submission interface.
Further, the invoicing application transaction unit and the invoicing submission transaction unit can run concurrently.
The invention has the beneficial effects that: the technical scheme of the invention provides a method and a system for generating a block chain electronic invoice code number by an intelligent contract, wherein the method comprises the following steps: acquiring an invoice code and an invoice number section distributed by a tax bureau; establishing an invoicing application transaction, calling an intelligent contract invoicing application interface to carry out invoicing rule verification, and generating an electronic invoice submission network consensus; after network consensus is achieved, writing the invoicing application transaction into a block chain account book; establishing an invoicing submission transaction, calling an intelligent contract invoicing submission interface, and acquiring a continuous unique sequence number of the invoicing application transaction on a block chain account book; performing one-to-one mapping on the sequence number, the invoice code and the invoice number segment to generate a unique invoice code and a continuous unique invoice number under the same invoice code; the invention solves the technical difficulty that the intelligent contract concurrently generates the continuous and unique invoice number, so that the intelligent contract can generate the electronic invoice on a chain, and complete the whole life cycle management of the chain invoicing, flushing, invalidation, reimbursement, collection, filing and inquiry of the block chain electronic invoice; the invention can request the invoicing application transaction and the invoicing submission transaction from any node in the block chain, realizes the decentralized invoicing, is beneficial to saving the hardware cost of tax control equipment of an enterprise, reducing the burden of the enterprise and being beneficial to the tax bureau to monitor the whole life cycle of the electronic invoice.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
FIG. 1 is a flow chart of a method for intelligent contract generation of blockchain electronic invoice code numbers in accordance with an embodiment of the present invention;
fig. 2 is a block diagram of a system for generating a blockchain electronic invoice code number for an intelligent contract, in accordance with an embodiment of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Fig. 1 is a flowchart of a method for generating a blockchain electronic invoice code number by an intelligent contract according to an embodiment of the invention. As shown in fig. 1, the method includes:
step 110, acquiring an invoice code and an invoice number section distributed by a tax bureau according to a preset rule; specifically, in this embodiment, the obtaining of the invoice code allocated by the tax office and the number segment of the invoice number according to the preset rule includes: and calling an intelligent contract number source distribution interface to write the invoice codes distributed by the tax bureau and the number sections of the invoice numbers into the block chain, wherein the invoicing application transaction has a continuous and unique sequence on the block chain account book.
Step 120, establishing an invoicing application transaction; calling an intelligent contract invoicing application interface, verifying the invoicing rules of the invoicing application transaction, and generating an electronic invoice submitting network consensus after the verification is passed;
step 130, network consensus is verified and written into a block chain account book; specifically, the network consensus mechanism and the cryptographic technology of the blockchain ensure that invoices cannot be forged and tampered, and after the network consensus is achieved for the invoicing application transaction, the invoicing application transaction is written into a blockchain account book.
Step 140, establishing an invoicing submission transaction; and calling an intelligent contract billing submission interface to obtain the ordered continuous unique sequence number of the billing application transaction on the block chain account book.
Step 150, generating an invoice code and an invoice number; and carrying out one-to-one mapping on the sequence number, the invoice code and the invoice number segment to generate a unique invoice code, and carrying out network consensus verification on the continuous unique invoice numbers under the same invoice code.
Specifically, in this example, the invoicing application sequence number is obtained by traversing the account book calculation through the intelligent contract invoicing submission interface, and the invoicing application sequence number calculated by any node is continuous, unique and consistent, so that the invoice code number obtained by one-to-one mapping of the invoicing application sequence number is also unique, consistent and decentralized.
Furthermore, the invoice code number generated by the method can be used for making an invoice application and submitting an invoice at the user simultaneously; meanwhile, when the invoicing application and the invoicing submission are carried out concurrently, the invoicing application and the invoicing submission are unique on the whole block chain and are completely decentralized.
Specifically, the blockchain alliance chain architecture adopted in this example is an open-source hyper-tree Fabric architecture, and the detailed transaction flow of the hyper-tree Fabric architecture is described in detail in the background description.
Fig. 2 is a block diagram of a system for generating a blockchain electronic invoice code number for an intelligent contract, in accordance with an embodiment of the present invention. As shown in fig. 2, the system includes:
a preset parameter obtaining unit 1, wherein one end of the preset parameter obtaining unit 1 is connected with an invoicing submitting transaction unit 3; the acquiring preset parameter unit 1 is used for acquiring an invoice code and an invoice number segment distributed by a tax bureau according to a preset rule and sending the invoice code and the invoice number segment to the invoicing submitting transaction unit 3;
the invoicing applying transaction unit 2 is used for calling an intelligent contract invoicing applying interface, and generating electronic invoice submitting network consensus after the invoicing rule verification of the invoicing applying transaction is passed; after network consensus is achieved, writing the invoicing application transaction into a block chain account book; the invoicing application transaction has a continuous unique sequence on the blockchain ledger;
the billing application transaction unit 3 is used for calling an intelligent contract billing application interface to obtain an ordered continuous unique sequence number of the billing application transaction on the block chain account book; and carrying out one-to-one mapping on the sequence number, the invoice code and the invoice number segment to generate a unique invoice code and a continuous unique invoice number under the same invoice code.
Further, the invoicing application transaction unit 2 includes:
the billing rule verification module 21, one end of the billing rule verification module 21 is connected with the network consensus module 22; the invoicing rule verification module 21 is used for calling an intelligent contract invoicing application interface, performing invoicing rule verification on the invoicing application transaction, generating an electronic invoice after the verification is passed, and submitting the electronic invoice to the network consensus module 22;
a network consensus module 22, wherein one end of the network consensus module 22 is connected with the block chain account book; the network consensus module 22 is configured to perform network consensus verification on the electronic invoice applied for making an invoice, and write the invoice application transaction into a block chain ledger book after network consensus is achieved; the invoicing application transactions have a continuous unique order on the blockchain ledger.
Furthermore, the sequence number is obtained through calculation after traversing and retrieving all invoicing applications and transactions on the block chain account book through the intelligent contract invoicing submission interface.
Further, the invoicing application transaction unit 2 and the invoicing submission transaction unit 3 may operate concurrently.
Specifically, the user can request the billing application transaction and the billing submission transaction from any node in the blockchain, so that the centralized billing is realized.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the disclosure may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Reference to step numbers in this specification is only for distinguishing between steps and is not intended to limit the temporal or logical relationship between steps, which includes all possible scenarios unless the context clearly dictates otherwise.
Moreover, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the disclosure and form different embodiments. For example, any of the embodiments claimed in the claims can be used in any combination.
Various component embodiments of the disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. The present disclosure may also be embodied as device or system programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present disclosure may be stored on a computer-readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the disclosure, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The disclosure may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several systems, several of these systems may be embodied by one and the same item of hardware.
The foregoing is directed to embodiments of the present disclosure, and it is noted that numerous improvements, modifications, and variations may be made by those skilled in the art without departing from the spirit of the disclosure, and that such improvements, modifications, and variations are considered to be within the scope of the present disclosure.

Claims (9)

1. A method of intelligent contract generation blockchain electronic invoice code numbers, the method comprising:
acquiring an invoice code and an invoice number section distributed by a tax bureau according to a preset rule;
establishing an invoicing application transaction; the establishing of the invoicing application transaction comprises the steps of calling an intelligent contract invoicing application interface, and generating electronic invoice submitting network consensus after the invoicing application transaction is subjected to invoicing rule verification; after network consensus is achieved, writing the invoicing application transaction into a block chain account book; the invoicing application transactions have a continuous unique order on the blockchain ledger.
Establishing an invoicing submission transaction; the establishing of the invoicing submission transaction comprises calling an intelligent contract invoicing submission interface to obtain an ordered continuous unique sequence number of the invoicing application transaction on a block chain account book; and carrying out one-to-one mapping on the sequence number, the invoice code and the invoice number segment to generate a unique invoice code, and carrying out network consensus verification on the continuous unique invoice numbers under the same invoice code.
2. The method according to claim 1, wherein the obtaining of the invoice code and the number section of the invoice number allocated by the tax bureau according to the preset rule comprises:
and calling an intelligent contract number source distribution interface to write the invoice codes distributed by the tax bureau and the number sections of the invoice numbers into the block chain.
3. The method of claim 1, wherein the sequence number is computed after retrieval of all invoicing applications transacted on the blockchain ledger through the intelligent contract invoicing submission interface.
4. The method of claim 1, wherein: the establishing an invoicing application transaction and the establishing an invoicing submission transaction may be performed concurrently.
5. The method of claim 1, wherein: the establish invoicing application transaction and the establish invoicing submission transaction may be requested from any node in the blockchain.
6. A system for intelligent contract generation blockchain electronic invoice code numbers, the system comprising:
the system comprises a preset parameter obtaining unit, a transaction processing unit and a transaction processing unit, wherein one end of the preset parameter obtaining unit is connected with the invoicing submission transaction unit; the acquiring preset parameter unit is used for acquiring an invoice code and an invoice number segment distributed by a tax bureau according to a preset rule and sending the invoice code and the invoice number segment to the invoicing submitting transaction unit;
the system comprises a billing application transaction unit, a billing management unit and a billing management unit, wherein the billing application transaction unit is used for calling an intelligent contract billing application interface, and generating electronic invoice submission network consensus after the billing application transaction passes the validation of billing rules; after network consensus is achieved, writing the invoicing application transaction into a block chain account book; the invoicing application transaction has a continuous unique sequence on the blockchain ledger;
the system comprises an invoicing submitting transaction unit, an invoicing applying transaction unit and a block chain account book, wherein the invoicing applying transaction unit is used for calling an intelligent contract invoicing submitting interface and acquiring ordered continuous unique sequence numbers of the invoicing applying transaction on the block chain account book; and carrying out one-to-one mapping on the sequence number, the invoice code and the invoice number segment to generate a unique invoice code and a continuous unique invoice number under the same invoice code.
7. The system of claim 6, wherein the invoicing application transaction unit comprises:
the billing rule verification module is connected with the network consensus module at one end; the invoicing rule verification module is used for calling an intelligent contract invoicing application interface, performing invoicing rule verification on the invoicing application transaction, generating an electronic invoice after the verification is passed, and submitting the electronic invoice to the network consensus module;
the network consensus module is connected with the block chain account book at one end; the network consensus module is used for carrying out network consensus verification on the electronic invoice applied for invoicing, and writing the invoicing application transaction into a block chain account book after network consensus is achieved; the invoicing application transactions have a continuous unique order on the blockchain ledger.
8. The system of claim 6, wherein the sequence number is computed after retrieval of all invoicing applications transacted on the blockchain ledger through the intelligent contract invoicing submission interface.
9. The system of claim 6, wherein the invoicing application transaction unit and the invoicing submission transaction unit may run concurrently.
CN201910816258.1A 2019-08-30 2019-08-30 Method and system for generating block chain electronic invoice code number by intelligent contract Pending CN110751528A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106952124A (en) * 2017-03-16 2017-07-14 北京牛链科技有限公司 Electronic bill management system and method based on distribution book keeping operation
CN108305106A (en) * 2018-01-31 2018-07-20 复旦大学 A kind of electronic invoice register method based on block chain
CN109949111A (en) * 2019-03-06 2019-06-28 深圳市智税链科技有限公司 Electronic bill mark distributing method, electronic bill generation method, apparatus and system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106952124A (en) * 2017-03-16 2017-07-14 北京牛链科技有限公司 Electronic bill management system and method based on distribution book keeping operation
CN108305106A (en) * 2018-01-31 2018-07-20 复旦大学 A kind of electronic invoice register method based on block chain
CN109949111A (en) * 2019-03-06 2019-06-28 深圳市智税链科技有限公司 Electronic bill mark distributing method, electronic bill generation method, apparatus and system

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Application publication date: 20200204