{"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 social public welfare?","a":"Improving Food Safety and Traceability: Blockchain technology can be used to record and track various segments  of the food supply chain, ensuring food safety and enhancing consumer confidence in the authenticity of products."}]}],"pr":"61180b04206039c31ab346a706c8a8067623c045a39373811da9ac011e9e6435"}