{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain technology in the field of food safety?","a":"Food safety traceability: Based on blockchain technology, a food safety traceback system can be constructed to achieve traceability of the whole process of agricultural and  sideline products planting, processing, testing, storage, transportation, and sales, ensuring that the source can be traced, the flow can be tracked, the information can be checked, and the responsibility can be pursued."}]}],"pr":"b09507986e4400668de6c92b765db735626d9ab4e1b757ea2a4741e6c3afaeba"}