{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of smart contracts on the blockchain?","a":"Autonomous and self-sufficient:  Smart contracts execute automatically based on pre-set conditions, requiring no human intervention, improving the efficiency and reliability of contract execution."}]}],"pr":"d603721da7c406af6d1cbd08b70f703f97b3427328d99aa2e154c8fbec564dc3"}