{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the specific steps to follow for the recovery process after a blockchain upgrade?","a":"Backup the high-tech blockchain data before the upgrade:  Before the upgrade, a complete backup of the blockchain data is needed in case problems occur during the upgrade process and recovery is required to the previous version."}]}],"pr":"273a24165131eea7f30ce072734b7c97e9b1eac329197e93f35c3f12bfdde402"}