{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure the security of private data during transfer and usage?","a":"Smart contracts: Blockchain-based smart contracts  can be used to define and enforce data usage rules, ensuring that private data is used appropriately and legally."}]}],"pr":"1ad42ad1e58f85735bb05ebf16b28c3f3e96c64a2d6f0cef42407ce209565eb0"}