{"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":"2d99d5e066eb491af0ec2e627041d4895c72e6afaf26b5a4d9c1368ee4d1c9f1"}