{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the recommendations for the restart and recovery process after a failed blockchain version upgrade?","a":"Ensure backup: Before performing the version upgrade, make sure to backup the entire blockchain network, including crucial information such as block data, wallet private keys,  configuration files, etc. This will help to quickly recover the system in case of upgrade failure."}]}],"pr":"94bf98e91b3b8c0102b9b6a4390934fdd3a9f0bfe8a93b125eef58b76dd0fd70"}