{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to data traceability management?","a":"Immutability: The data in blockchain technology is encrypted, and once the  data is recorded in a block, it is difficult to tamper with it. This makes blockchain a reliable data source and ensures the authenticity of the data."}]}],"pr":"1f6ec2c089876821380df1c762dbd6c3af5f78ac63e30e9f627a874fd23de3a1"}