{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain be applied to environmental protection?","a":"Carbon emissions trading: Blockchain technology can be used to record and verify carbon emissions trading data, ensuring  the authenticity, transparency, and traceability of transactions. Through carbon emissions trading, it helps to optimize the allocation of environmental resources and promote green and low-carbon development."}]}],"pr":"bfc2e661d648b363d54fb5065185b806c13d1cbc9f0b1238aea13cb78876ef17"}