Graphic code scanning logistics tracking method for encryption system

The invention discloses a graphic code scanning logistics tracking method for an encryption system, and the method comprises the following steps: S1, enabling a graphic code to be presented in a two-dimensional code or a bar code or in other forms, and marking a circulating object with unchangeable and erasable ink. According to the invention, the graphic code and the distributed blockchain network are adopted and organically combined in the mode to complete full-circulation information tracking of the commodity, flexible authorization can be realized, and under the premise of protecting the privacy of a circulation person and a purchaser, full circulation record and tamper-proof and absolutely credible quality and circulation management of the commodity are realized. Meanwhile, a specificprivate key is opened to authorize commercial investigation, academic institutions, government departments and crime investigation departments so as to provide big data information of commodity circulation and specific infor