{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the limitations of blockchain technology?","a":"Technical Challenges: Blockchain technology is not yet fully mature, and it faces certain technical challenges in  aspects such as performance, scalability, and usability."}]}],"pr":"ef01a61d0b8b1cccd498201b56933e9d75acac5881250f96ea2bd173a5a2e7da"}