{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain be applied to environmental protection?","a":"Pollutant emission monitoring: Blockchain can be used for real-time monitoring and recording of pollutant emission data,  ensuring that enterprises comply with environmental protection regulations."}]}],"pr":"47e87dbad71ea693d315623d97f0e1adb1bb3155d4423b31e0530d01e81a7ea6"}