{"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":"f131b99dc19c6f56cbc526c18091671c45fb74af1683e598221e032b01442d47"}