The document discusses initiatives by the United for Smart Sustainable Cities (U4SSC) program. U4SSC is coordinating several projects including guidelines for blockchain, circular cities, and tools to finance smart city projects. It is also developing a framework for using data and models to solve urban problems. U4SSC aims to help cities measure progress on sustainability goals and has created a set of over 50 key performance indicators across topics like ICT, environment, transportation and more. Case studies of cities applying the indicators include Dubai, Singapore and Moscow. Future work includes a global city index and reviewing existing smart city standards.