{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can I securely back up the key file of a validator wallet in a blockchain?","a":"Multi-backup: Save the key file on different physical devices such as computers, USB drives, external hard drives, etc., to ensure that the wallet  can be recovered if one device is lost or damaged."}]}],"pr":"69149c6868ee6d5c9d29494422a7de6e7220f4f29c0512e61d51e9cca7397ca4"}