{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why must the random number account in the durable transaction function be rent-free?","a":"Enhance convenience: Rent-free random number accounts mean that users can use the random number  generator for free without worrying about rental issues. This helps to attract more users to use this feature."}]}],"pr":"ffd82646296f438a567980c1c553884775eb8cf443ee36ec462292a2915b7bba"}