{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The recovery operations following a blockchain upgrade include which steps?","a":"Backup blockchain data before upgrade: Before the upgrade, a complete backup of the existing blockchain data is required in case of accidental data loss during the upgrade process. The backup data can be stored in various ways, such as cold wallets, hot wallets, etc."}]}]}