CitiOS uses blockchain technology to help achieve the United Nations Sustainable Development Goals. CitiOS' mission is to help society solve environmental and energy-related issues, providing everyone in the community with an unbiased communication network. Issues involving the environment, energy, and urbanization can be effectively addressed through IoT device technology. CitiOS will lead the development of the next technology and keep the ecosystem up-to-date. CitiOS has also created R2R Coin for peer-to-peer micropayments, high-speed transactions and zero transaction fees.