{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain technology?","a":"Openness and Transparency: The data in blockchain technology is transparent and accessible  to everyone, enabling them to view the ledger and improving the efficiency of social operations while reducing errors caused by moral hazards."}]}],"pr":"af8aad998ffa1d99278a269b43024f9449ffcfaea42c23a590257b12c6e24b3f"}