{"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":"c3ae8fa596b44ebe2648cc42705a8b16ab6075b3de9a77b6e65c48fd461a6254"}