{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the impact of blockchain technology on the field of food traceability?","a":"Building a trust mechanism: The decentralized characteristics and data immutability of blockchain technology provide a reliable  guarantee for food safety, reducing the trust cost of consumers towards enterprises and government regulatory departments."}]}],"pr":"eb3702c9642f7cb269f6b29953d077aca8d765a46a1f909d0830ea189b307a76"}