{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the key files needed for the recovery process of a blockchain upgrade?","a":"The recovery process of blockchain upgrade requires key backup files including block data, chain data, transaction data, ledger data, consensus algorithm-related data, etc. These files contain core information in the blockchain network. When upgrading or restoring, it is necessary to ensure the secure backup and correct restoration of these key data to guarantee the stability and integrity  of the blockchain system."}]}],"pr":"59c2f8d5306517f618ef8c6ffadc8af369da0ad76ebfe106e99d31efdde0fa61"}