{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Where can I find the trade-off for the expiration time of blockchain transactions?","a":"Transaction confirmation speed: A  long expiration time can lead to decreased transaction confirmation speed, affecting the performance of the blockchain system. To ensure a high transaction confirmation speed, a balance must be struck between expiration time and system performance."}]}],"pr":"c44f9cd2292096e799c3796d1bc9ab44f4406a7cbe873e5bd6437d755f517a26"}