{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to create a versioned transaction?","a":"Version control: During the transaction process, implement version control for the  transaction agreement. When both parties to the transaction agree to modify the agreement, create a new version of the agreement and maintain the previous version(s)."}]}],"pr":"228ba18af934d0080e4fa82033f3e018e561b27d7476eb861f648efacbf5a378"}