{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why do we need to use blockchain instead of just using JSON?","a":"Decentralization: Blockchain adopts a distributed node consensus mechanism, eliminating the risks of  centralized data storage and management, and improving the reliability and security of data. In contrast, JSON still relies on a centralized system, which may pose potential risks."}]}],"pr":"0d0e085e4549e4ef0ec520c8925ae656f0bd2f560da5ab2ac54aa764aa062292"}