XUT (native pass DNS) is a scalable heterogeneous multi-chain system that can be compatible with multiple blockchain systems. It supports the information transmission function necessary for the development of commercial blockchain applications, provides data exchange between parallel chains, and solves the problem of cross-chain ecological asset consensus in the future. Like all parallel chain access XUT networks, the XUT relay chain has its own native pass-through DNS to represent rights. The only way to obtain DNS is through mining activities.