Application of blockchain technology for storage information on spatial objects

The article highlights the approach to processing landed property data based on Blockchain technology and Ethereum platform, which allows the transparent, decentralized and highly reliable system for network users with restricted access to personal data. A review of the platforms for creating decentralized online services has been performed; their advantages and disadvantages considered. The inventory of the fields required for work with the landed property. There have been selected tools for working with Ethereum platform: browser Mist and the highlevel language Solidity. To facilitate working with the inventory there were created a site with a map based on SharePoint platform and integrated using API Yandex.map. Peculiarity of the system under consideration is the need for trust between the participants who add data to the inventory. It has been proposed to use either a system based on a credible exchange of certificates, as they provide the high level of personal data security and have a service life, i.e. they are active only for one session, or a system of criteria for calculating the combined trust and assigning it to another person. Emphasis is made on the need to take into account the context of collaboration and shared services in trust management. The use of Blockchain technology for solving a practical task, namely, processing and storing spatial data on landed property, is an efficient way to store data, which will ensure the data relevance and reliability, as well as reduce their loss.