CitiOS utilizes blockchain technology to help achieve the United Nations Sustainable Development Goals. The mission of CitiOS is to help society solve environmental and energy related problems, and provide a fair communication network for everyone in the community. Through IoT device technology, problems related to environment, energy, and urbanization can be effectively solved. CitiOS will lead the next technology development and keep the ecosystem up-to-date with the latest technologies. CitiOS has also created R2R coins for peer-to-peer micro payments, high-speed transactions, and zero transaction fees....