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. © 2022 The Author(s) Export Date: 31 May 2022; Review; 通讯地址: Lv, Z.; Department of Game Design, Sweden; 电子邮件: lvzhihan@gmail.com; 基金资助详情: National Natural Science Foundation of China, NSFC, 61902203; 基金资助详情: Fundo para o Desenvolvimento das Ciências e da Tecnologia, FDCT, 0050/2020/A1; 基金资助文本 1: This work was supported in part by the National Natural Science Foundation of China under grant no. 61902203 and the Science and Technology Development Fund , Macau SAR (file no. 0050/2020/A1 ).; 参考文献: Dionisio, J.D.N., Burns, W.G., III, Gilbert, R., 3d virtual worlds and the metaverse: current status and future possibilities (2013) ACM Comput. Surv. (CSUR), 45, pp. 1-38; Lee, L.H., Braud, T., Zhou, P., Wang, L., Xu, D., Lin, Z., Kumar, A., Hui, P., All one needs to know about metaverse: a complete survey on technological singularity, virtual ecosystem, and research agenda (2021) arXiv, , Preprint at; El Saddik, A., Digital twins: the convergence of multimedia technologies (2018) IEEE Multimed., 25, pp. 87-92; Altun, C., Tavli, B., Yanikomeroglu, H., Liberalization of digital twins of iot-enabled home appliances via blockchains and absolute ownership rights (2019) IEEE Commun. Mag., 57, pp. 65-71; Ryskeldiev, B., Ochiai, Y., Cohen, M., Herder, J., Distributed metaverse: creating decentralized blockchain-based model for peer-to-peer sharing of virtual spaces for mixed reality applications (2018) Proceedings of the 9th Augmented Human International Conference, pp. 1-3; Yaqoob, I., Salah, K., Uddin, M., Jayaraman, R., Omar, M., Imran, M., Blockchain for digital twins: recent advances and future research challenges (2020) IEEE Netw., 34, pp. 290-298; Milton, M., De La O, C., Ginn, H.L., Benigni, A., Controller-embeddable probabilistic real-time digital twins for power electronic converter diagnostics (2020) IEEE Trans. Power Electron., 35, pp. 9850-9864; Wang, F.Y., Qin, R., Li, J., Yuan, Y., Wang, X., Parallel societies: a computing perspective of social digital twins and virtual–real interactions (2020) IEEE Trans. Comput. Soc. Syst., 7, pp. 2-7; Falchuk, B., Loeb, S., Neff, R., The social metaverse: battle for privacy (2018) IEEE Technol. Soc. Mag., 37, pp. 52-61; Kaigom, E.G., Roßmann, J., Value-driven robotic digital twins in cyber–physical applications (2020) IEEE Trans. Ind. Inform., 17, pp. 3609-3619; Lu, Y., Huang, X., Zhang, K., Maharjan, S., Zhang, Y., Communication-efficient federated learning for digital twin edge networks in industrial iot (2020) IEEE Trans. Ind. Inform., 17, pp. 5709-5718; Kapteyn, M.G., Pretorius, J.V.R., Willcox, K.E., A probabilistic graphical model foundation for enabling predictive digital twins at scale (2021) Nat. Comput. Sci., 1, pp. 337-347; Niederer, S.A., Sacks, M.S., Girolami, M., Willcox, K., Scaling digital twins from the artisanal to the industrial (2021) Nat. Comput. Sci., 1, pp. 313-320; Nakamoto, S., Bitcoin: a peer-to-peer electronic cash system (2009), https://bitcoin.org/en/bitcoin-paper; Tao, F., Qi, Q., Make more digital twins (2019) Nature, pp. 490-491; Wang, F.Y., Parallel system methods for management and control of complex systems (2004) Control Decis., 19, pp. 485-489; Bock, A., Marcinkowski, M., Kilby, J., Emmart, C., Ynnerman, A., Openspace: public dissemination of space mission profiles (2015) 2015 IEEE Scientific Visualization Conference (SciVis), pp. 141-142. , IEEE; Ishiyama, T., Prada, F., Klypin, A.A., Sinha, M., Metcalf, R.B., Jullo, E., Altieri, B., de la Torre, S., The uchuu simulations: data release 1 and dark matter halo concentrations (2021) Mon. Not. R. Astron. Soc., 506, pp. 4210-4231; Lv, Z., Tek, A., Da Silva, F., Empereur-Mot, C., Chavent, M., Baaden, M., Game on, science-how video game technology may help biologists tackle visualization challenges (2013) PLoS One, 8, p. e57990; Lv, Z., Yin, T., Zhang, X., Song, H., Chen, G., Virtual reality smart city based on webvrgis (2016) IEEE Internet Things J., 3, pp. 1015-1024; Fan, M., Zhang, X., Consortium blockchain based data aggregation and regulation mechanism for smart grid (2019) IEEE Access, 7, pp. 35929-35940; Li, Y., Qiao, L., Lv, Z., An optimized byzantine fault tolerance algorithm for consortium blockchain (2021) Peer-to-Peer Netw. Appl., pp. 1-14; Lv, Z., Qiao, L., Hossain, M.S., Choi, B.J., Analysis of using blockchain to protect the privacy of drone big data (2021) IEEE Netw., 35, pp. 44-49; Cao, B., Wang, X., Zhang, W., Song, H., Lv, Z., A many-objective optimization model of industrial internet of things based on private blockchain (2020) IEEE Netw., 34, pp. 78-83; Suhail, S., Hussain, R., Jurdak, R., Hong, C.S., Trustworthy digital twins in the industrial internet of things with blockchain (2021) IEEE Internet Comput.; Celik, Y., Petri, I., Rezgui, Y., Leveraging bim and blockchain for digital twins (2021) 2021 IEEE International Conference on Engineering, Technology and Innovation (ICE/ITMC), pp. 1-10. , IEEE; Li, M., Li, Z., Huang, X., Qu, T., Blockchain-based digital twin sharing platform for reconfigurable socialized manufacturing resource integration (2021) Int. J. Prod. Econ., 240, p. 108223; Hemdan, E.E.D., Mahmoud, A.S.A., Blocktwins: a blockchain-based digital twins framework (2021) Blockchain Applications in IoT Ecosystem, pp. 177-186. , I. Chlamtac Springer; Putz, B., Dietz, M., Empl, P., Pernul, G., Ethertwin: blockchain-based secure digital twin information management (2021) Inf. Process. Manag., 58, p. 102425; Bellini, E., Bellini, A., Pirri, F., Coconea, L., Towards a trusted virtual smart cities operation center using the blockchain mirror model (2019) International Conference on Internet Science, pp. 283-291. , Springer; Nguyen, C.T., Hoang, D.T., Nguyen, D.N., Dutkiewicz, E., Metachain: a novel blockchain-based framework for metaverse applications (2021) arXiv, , Preprint at; Deren, L., Wenbo, Y., Zhenfeng, S., Smart city based on digital twins (2021) Comput. Urban Sci., 1, pp. 1-11