{"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":"Supply chain management: Blockchain technology can be applied to food supply chain management,  improving supply chain transparency, ensuring the authenticity and reliability of information at each link, and thereby reducing food safety risks."}]}],"pr":"869a443d67b3c1005cdfaebf23aa91d6d8c24264f02c0b260c2ee3a000cc6c00"}