Data processing method and device based on block chain, equipment and medium

Abstract

The embodiment of the invention discloses a data processing method and device based on a block chain, equipment and a medium, and the method comprises the steps: responding to an obtaining request ofa first terminal for a data certificate, verifying the legality of the first terminal according to first transaction information; if the first terminal has legality, querying a smart contract associated with a data certificate from a block chain, calling the smart contract according to a storage address of the smart contract, creating a target data certificate corresponding to the first transaction information according to the first transaction information, and generating a first digital asset according to the first transaction information; and sending the target data certificate and the firstdigital asset to a second terminal, establishing a first block in the block chain, and recording first attribution information of the first digital asset in the first block, so that the second terminal reimburses the data certificate according to the first digital asset and the first attribution information. By adopting the embodiment of the invention, the security of the data certificate can beimproved.

Description

technical field

[0001] The present application relates to the technical field of blockchain, in particular to a data processing method, device, equipment and medium based on blockchain. Background technique

[0002] Data vouchers refer to the business vouchers issued and received by all enterprises and individuals in the purchase and sale of goods, provision or acceptance of services, and other business activities. For example, they are the original basis for accounting and are also an important basis for law enforcement inspections by auditing agencies and taxation agencies. . For enterprises, the data voucher is mainly the basis for the enterprise to make accounts, and it is also the expense voucher for tax payment; for employees, the data voucher is mainly used for reimbursement.

[0003] The biggest problem with the current data certificates is that they can be copied multiple times, and each copy of the data certificates obtained is the same, and it is impossible to de...

Images