{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the impact of blockchain on the environment?","a":"Carbon emissions: With the popularization of blockchain technology, more and more enterprises and  individuals begin"}]}],"pr":"d16fbd887a7ea0d23528c778a2630a8e62392927f51c0678d2c15f34620bf5f3"}