{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology improve the traceability of supply chains?","a":"Distributed Data Storage: Blockchain stores data from various links in the supply chain on multiple nodes,  ensuring the consistency and reliability of the data, and avoiding the potential problems of data tampering and forgery in a single centralized database."}]}],"pr":"286953cfdf982dc460c08a7e6fe9bc345224550408c1c71e7281e50bb1f60a70"}