{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain technology in food safety traceability?","a":"The blockchain-based incentive mechanism encourages participants in the food supply chain to actively participate in the construction and maintenance of the system,"}]}],"pr":"27599de3454226fde9e4eb3cfe19ca3f83c13a76b63de12d5dbca6f4a0b6cb59"}