{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the shortcomings of blockchain?","a":"Energy Consumption: The consensus mechanism in blockchain networks (such as proof of work) requires a large amount of  computing power, leading to an increase in energy consumption. In particular, the massive computing power used in Bitcoin networks causes significant energy waste."}]}],"pr":"0377f3408fffe80d6677575182862bee0abbe90c2bccee765dd8ba8736d3cfac"}