{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to avoid repeating expired blockhash in blockchain transactions?","a":"Ensure the use of the latest blockchain data: Before conducting a transaction, firstly ensure that the blockchain data being  used is the most recent, thereby avoiding the use of expired blockhash. Blockchain browsers or APIs can be utilized to obtain the latest block data."}]}],"pr":"a6570f3ade52f1d0a34fc0e29a2fe9d945d8d3a7e9b3c38b9bdc16557ce4f6db"}