{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can you ensure that the downloaded blockchain software binary file is secure and effective?","a":"Keep the  binary file up-to-date: Regularly update the binary file to ensure that you are using the latest and most secure version."}]}],"pr":"6640eba1b345aa53d2f345ed3a4286b35b71b9125fb4e5a9b46e00082f357f4f"}