{"p":"can-20","op":"mint","tick":"GANS","amt":"200","rows":[{"df":"qa","content":[{"q":"区块链的一个主要问题是什么？","a":"区块链的一个主要问题是其高度有限的可伸缩性。"}]}],"pr":"686960b6a646cb2444d61db53366add8d1b299d05b077a1e92492067cb09102e"}