Electronic invoice system based on blockchain and realization method

Abstract

The invention provides an electronic invoice system based on a blockchain and a realization method. The method includes steps: (S1), application registration: a tax bureau terminal generates a privatekey on a blockchain system according to a requirement of a taxpayer and generates a public key and an address through the generated private key; (S2), return of the private key: the taxpayer can inquire his own invoice according to the address generated by the tax bureau terminal and perform identity authentication or decryption through the public key and the private key; (S3), invoice purchase:the tax bureau terminal writes an invoice balance of the taxpayer into the blockchain system and returns the invoice balance to a taxpayer terminal; (S4), invoice issuing: the taxpayer terminal inputsinvoice data, encrypts the input data and then uploads the encrypted data to the blockchain system; and (S5), invoice inquiry: invoice information is inquired according to the address and the privatekey of the taxpayer terminal. The system and the method are advantageous in that the degree of mutual trust is high, data cannot be tampered, the data traceability is realized, interconnection and intercommunication are achieved, and distributed storage and decentralization can be realized.

Description

technical field [0001] The present invention relates to the technical field of tax electronic invoices, and more specifically relates to a blockchain-based electronic invoice system and its implementation method. Background technique [0002] Electronic invoices are products of the information age. Like ordinary invoices, they are distributed to merchants in the form of uniform issuance by the tax bureau. The invoice number is coded nationwide and distributed to merchants using unified anti-counterfeiting technology. signature mechanism. For a long time, the existing electronic invoice system has the following problems: [0003] (1) The electronic invoice data issued by the taxpayer is aggregated and stored on the third-party platform, and the third-party platform provider can access all the invoice data of users on the platform. The data storage and management standards of the third-party service platform are not standardized, and the electronic invoice data is leaked and ...

AI Technical Summary

Problems solved by technology

[0003] (1) The electronic invoice data issued by the taxpayer is aggregated and stored on the third-party platform, and the third-party platform provider can access all the invoice data of users on the platform. The data storage and management standards of the third-party service platform are not standardized, and the electronic invoice data is leaked and leaked. Risk of being exploited

(2) Electronic invoice data transmission, storage and other standards are not standardized

(3) There are many third-party service providers, and different electronic invoice service platforms have different entrances. It is difficult for the recipient to obtain invoices. Taxpayers cannot query and print invoices through a unified query and verification portal.

(4) The State Administration of Taxation does not store PDF format files, which are stored separately by each third-party bottle, and there are information islands

(5) The inspection and download of electronic invoice format files cannot provide an authoritative unified way

(6) Electronic invoice format files have brought new problems to the reimbursement management, account management and archive management of enterprises because of their repeatable copying and resubmitting characteristics.

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