{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the limitations and challenges of blockchain technology?","a":"High Energy Consumption: Blockchain technology relies on a large amount of computing power, which not only leads to  increased energy consumption but may also cause environmental pollution."}]}],"pr":"99c222b2b2d1196f1deba97680a14a3f20d0addce755812182c1faa404b61d34"}