{"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":"92b6444f31412540224b27367e5a491e1dad7294f4f74ce45e173dd756119be3"}