OBSR (Observer Coin) is a practical cryptocurrency that can facilitate crowdsourcing of weather data transactions. Users obtain OBSR by sending personal weather observation data (such as temperature, pressure, humidity, and fine dust concentration) to the Observer Foundation. Whenever successful observations are made, details are recorded in coins and ROTs, and the data provider receives OBSR as a reward. All observation results are subject to quality control by meteorological experts and managed through big data technology. Data buyers can purchase OBSR from cryptocurrency exchanges to obtain weather data and obtain data through the Observer Foundation....