The invention discloses an authority updating method and device based on a block chain

Abstract

The invention discloses an authority updating method based on a block chain, and the method comprises the steps: obtaining transaction information and a signature with the transaction information comprising an identity identifier of a commodity and a target account address; obtaining an account address of a sender of the transaction information through the signature; calling a permission smart contract according to the transaction information to verify whether the account address of the sender is consistent with the account address of the current commodity owner or not; and if yes, changing the account address of the current owner of the commodity into the target account address by the permission smart contract. According to the invention, the information of the circulation process of thecommodity is recorded, the change of the commodity authority is intelligently realized through the authority, the problems of information asymmetry, verification and the like in the commodity transaction are solved, the transaction risk and the transaction cost are reduced, and the anti-counterfeiting purpose is achieved.

Description

technical field [0001] The present invention relates to block chain technology, in particular to a block chain-based authority update method and authority update device. Background technique [0002] At present, the anti-counterfeiting of diamonds is mainly based on diamond identification certificates, such as GIA certificates and NGTC certificates. However, the certificate only contains the basic identification information of the diamond, and the cost of counterfeiting is low. At present, the way of diamond smuggling through a set of certificates in the industry is repeatedly banned. In the process of diamond trading, the information of both parties is opaque. Professional buyers can evaluate the price of diamonds through self-appraisal, but individual users generally can only rely on appraisal certificates and know little about other diamond information. If the seller is dishonest, relatively Weak buyers are likely to lose out on the deal. Contents of the invention [...

AI Technical Summary

Problems solved by technology

However, the certificate only contains the basic identification information of the diamond, and the cost of counterfeiting is low. At present, the way of diamond smuggling through the set of certificates in the industry is repeatedly prohibited.

In the process of diamond trading, the information of both parties is opaque. Professional buyers can evaluate the price of diamonds through self-appraisal, but individual users generally can only rely on appraisal certificates and know little about other diamond information. If the seller is dishonest, relatively Weak buyers are likely to lose out on the deal

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