{"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":"4b3291594287e09f93663279939c4a63b3d2e57ac7684823e08406aef8a64f76"}