INTRO is a BI (Business Intelligence) system for the participants of off-plan development – builders, investors, homebuyers, banks and other agents. INTRO IT products provide access to advanced market analytics for industry professionals as well as for private homebuyers. The register of under construction objects and investors’ contracts are stored in the blockchain, which in turn receives data from official state sources. This allows for effective market analysis without violating the proprietors' rights to personal data protection