The development of Digital Twins has enabled them to be widely applied to various fields represented by intelligent manufacturing. A Metaverse, which is parallel to the physical world, needs mature and secure Digital Twins technology in addition to Parallel Intelligence to enable it to evolve autonomously. We propose that Blockchain combined with other areas does not simultaneously require all of the basic elements. We extract the immutable characteristics of Blockchain and propose a secure multidimensional data storage solution called BlockNet that can ensure the security of the digital mapping process of the Internet of Things, thereby improving the data reliability of Digital Twins. Additionally, to address some of the challenges faced by multiscale spatial data processing, we propose a nonmutagenic multidimensional Hash Geocoding method, allowing unique indexing of multidimensional information and avoiding information loss due to data dimensionality reduction while improving the efficiency of information retrieval and facilitating the implementation of the Metaverse through spatial Digital Twins based on these two studies. The Metaverse is the expansion of Digital Twins in the fields of people and society. Although the Metaverse existed 10 years before the emergence of Digital Twins, it is still in the concept stage, and Digital Twins has been widely used in industries and other fields. We extracted the immutable characteristics of Blockchain and proposed a secure multidimensional data storage solution called BlockNet that can ensure the security of the digital mapping process of the Internet of Things, thereby improving the data reliability of Digital Twins. Additionally, to address some of the challenges faced by multiscale spatial data processing, we proposed a nonmutagenic multidimensional Hash Geocoding method, allowing unique indexing of multidimensional information and avoiding information loss due to data dimensionality reduction while improving the efficiency of information retrieval and facilitating the implementation of the Metaverse through spatial Digital Twins based on these two works. The Metaverse is the expansion of Digital Twins in the fields of people and society. Although the Metaverse existed 10 years before the emergence of Digital Twins, it is still in the concept stage, and Digital Twins has been widely used in industries and other fields. Compared with Digital Twins, the Metaverse pays more attention to the organization, coding, and reliable storage of spatial data. This paper discusses the challenge of dealing with multiscale spatial data and discusses its multidimensional coding and storage.