{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the problem of data trustworthiness?","a":"Decentralization: Blockchain adopts a distributed node consensus mechanism, eliminating the risk of single centralized  control and improving the security of data."}]}],"pr":"e81f237e19f27fdf9e4587b502c1589a72a52547c8136b94e1a84c1dcb55ca81"}