DeMR is a decentralized Mixed Reality (MR) infrastructure network (MR-DePIN) built on the Solana blockchain, where users can participate in constructing MR spatial scenes and building infrastructure through a decentralized distributed concurrent architecture. It serves as a Web3 infrastructure for a vast number of MR applications and global users, utilizing MR & AI spatial computing technology to achieve complete interconnectivity and decentralization of the MR application ecosystem and the coexistence of virtual and real-world scenarios based on DeMR. The digital world crafted by MR & AI spatial computing technology enables people to enter a beautiful new world of spatial interconnection and coexistence of the virtual and real anytime, anywhere.