I have been working with blockchain technology from 2011. The following products were created during this time: - crypto-currency exchange, merchant tools - compliance system for crypto-currency operations, blockchain explorer. - software tools and frameworks for developing p2p networks and applications. - private blockchains development, consulting, ICO tokens development. - blockchain based mortgage system - blockchan based letter of credit and escrow payment - p2p loan system - blockchain insurance system - bitcoin merchant tools - suppliers management system based on blockchain - token economy creation And many more.