{"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":"465c7b9a405fa1983f3738150149726fabd68b85b19a4da9b940fb9b6a356203"}