{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the scalability issues of blockchain?","a":"Limited transaction speed: As the number of blockchain nodes increases, network congestion gradually becomes prominent, transaction confirmation speed slows down, and  transaction processing capacity is limited."}]}],"pr":"e85d197f9c8e9f45b48ddf52240f047149963e7f1e0fa226a98d9500cfc8b2f1"}