The 19th Plenary Session of the Internet of Things Technical Committee (TC10), CCSA was held in Beijing from April 2 to 4, 2018. During the meeting, CCSA and Zhongguancun Blockchain Industry Alliance co-held a seminar on “Blockchain + Internet of Things and Smart City”. Experts from China Unicom, Beijing University of Posts and Telecommunications, Huawei, ZTE Cloud Chain etc. were invited to share their knowledge and exchange information. The working groups of this TC also held their meetings during this period of time.