{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied in the field of traceability and origin verification?","a":"Agricultural product traceability: Blockchain technology can  help farmers and agricultural companies to trace"}]}],"pr":"2b0ab69d0d5f269ad559f0ec92db4032d885b9f611a5de0f268f613705490ce1"}