{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to ensure the expiry time of blockchain transactions?","a":"Choose an appropriate blockchain platform: Different blockchain platforms have different transaction confirmation times and expiration times. When choosing a platform, it is important to understand its transaction speed and security to ensure that the transaction is  confirmed within the specified time."}]}],"pr":"f5ba20b9ef113aaadfb6784f5c2113e4dff66fe5745bb84bec2896bc863548d9"}