{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to avoid using expired blockhash in blockchain transactions?","a":"Monitor the blockchain status: After submitting the transaction,  continuously monitor the blockchain status to ensure"}]}],"pr":"2abad48e29dcd2031832dac566328a7af7278aa782912726d3d664a98dfc7acc"}