Safety tax-control invoice data transaction system and method based on blockchain

Abstract

The invention relates to a safety tax-control invoice data transaction system based on a blockchain. The system comprises a safety multi-party calculation module which is disposed at the local of a user and is used for the encryption calculation of invoice data; a blockchain application system, which realizes alliance chain operation and maintenance, evidence storage and transaction contract management; a transaction management platform, which is used for managing transactions among the user nodes; and a tax control data application system, which is used for controlling and managing the transaction offline business process. The invention further relates to a safety tax control invoice data transaction method based on the block chain, when transaction is carried out on the alliance chain, the invoice data demander provides invoice cipher text data which is subjected to statistical equivalent calculation by utilizing the safety multi-party calculation module so as to be calculated on thealliance chain, and then the transaction is completed. The system and the method are based on an alliance chain system, in the transaction process, the tax control invoice data transaction functionsof data privacy protection, traceability, integrity and authenticity in the transaction process are achieved, and safe transaction sharing of tax control invoice data is promoted.

Description

technical field [0001] The invention relates to a blockchain-based security tax control invoice data transaction system, and the invention also relates to a blockchain-based security tax control invoice data transaction method. Background technique [0002] Tax control invoice data is relational data, including elements that can be used for statistical calculations such as quantity, amount, and invoice date. The application of invoice big data mainly involves algebraic operations such as addition, multiplication, and mean square error, as well as logical comparison operations. [0003] At present, the risk assessment of lending by financial institutions and the credit investigation of credit agencies require the tax control invoice data of corporate users for risk assessment and data sharing transactions. On the one hand, corporate users hope to obtain income from loans and data transactions, but on the other hand, they have concerns about providing their original plaintext...

AI Technical Summary

Problems solved by technology

On the one hand, corporate users hope to obtain income from loans and data transactions, but on the other hand, they have concerns about providing their original plaintext data to financial or credit agencies, worrying about data security, data abuse, and privacy protection.

For example, the Chinese invention patent application with publication number CN109785127A (application number 201910244895.6) "A sales invoice verification method, system and related equipment", and the Chinese invention patent application with publication number CN106355488A (application number 201610856919.X) " A Tax Control Method and System Based on Credit Reporting", in which, during the implementation of the disclosed scheme, due to the need to transmit plain text data of invoices, there are problems such as data security, data abuse, and privacy protection

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