{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What problems can blockchain technology solve?","a":"Data origin tracing: Blockchain technology can provide origin tracing functions for various types of data, ensuring that the authenticity and reliability  of the data are maintained."}]}],"pr":"9bb35f50620f17fd73615263e165190f39e55e4252ed5a58743b88a893b78dc1"}