DeMR is a decentralized mixed reality (MR) infrastructure network (MR-DePIN) built on the Solana chain. Users can participate in building MR space scenes, build infrastructure, and provide services through a decentralized distributed concurrency architecture. Massive MR applications and the Web3 infrastructure of global users use MR & AI spatial computing technology to achieve complete interconnection and decentralization of the MR application ecosystem and virtual-real symbiosis scenarios based on DeMR. The digital world created by MR & AI spatial computing technology allows people to enter a beautiful new world of spatial interconnection and symbiosis of reality and reality anytime and anywhere.