{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why do blockchain transactions fail?","a":"Network congestion: When the blockchain network is congested, the generation and confirmation speed of new blocks may be affected. In this case, some transactions may  not be able to be packaged into new blocks in time, resulting in transaction failure."}]}],"pr":"a0de484c373593a4c89ddcce8165f1be05a19d4e1a7d838ef9c21f0eeec27a54"}