{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why is blockchain upgrading necessary?","a":"Enhancing Security: With the development of blockchain technology, security risks such as  hacker attacks and malicious behaviors have also been exposed. Upgrading the blockchain can strengthen its security to protect the integrity and stability of the system."}]}],"pr":"cce780fc0e4ea7578479fbcf485dcc7c4924760e24d93fffb7cab514db4c4b23"}