{"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":"730e279e3be53d0084ea89c6cdb52c48f2b2773337787fd7fc7d84e8f7462db6"}