Developing an Address of Space Model Using Smart Contract of Geospatial Blockchain

As the need for change in address policy increases with the entry into a hyper-connected society, a new addressing system assigning addresses to space and things has emerged. However, due to lack of scalability and no disclosure of algorithms, usability is reduced, and multiple identifiers are included in the address, which raises the privacy issues. To solve these problems, this study aims to develop a new address of space model using blockchain and geohash. Geohash is a geocoding system that converts latitude and longitude values into a single string and utilizes a grid. This algorithm is open to the public, so it can be used in conjunction with blockchain, which is characterized by security. In this research, we implemented a smart contract that encrypts address of space. An optimized geohash was constructed in this process. As a result, the study area is optimized by the number of geohash grids by 83.57% of the maximum. Also, a new address of space model was tested by generating 972 encrypted spatial addresses. Accordingly, we are confident that this study has verified the applicability of geospatial blockchain and would result in activating the usage and development of geospatial blockchain. In addition, we are expecting that this study contributes to the current address policy that leads to developing new addresses assigned to space and things.