{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages and limitations of blockchain technology?","a":"Data transparency: The data in the blockchain can be real-time shared and queried, improving  information transparency and helping to eliminate manipulation and fraud in intermediate links."}]}],"pr":"0614cf99be03c4d90de84bd6a1b0f75f3d3254d04071ed83816a6975f09b9ead"}