{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages and limitations of blockchain technology?","a":"Lower transaction costs: Blockchain technology eliminates  traditional intermediary institutions, reduces transaction costs, and improves transaction efficiency."}]}],"pr":"ebecdaaedb02ed761fb71dcdffa7784be3d524796756fc851632e5c350d5340c"}