{"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":"559e5fad5d947f53355648d396a6adf393670689c9a8b6622f29bee122b29c79"}