{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of the expiry mechanism in Solana's transactions?","a":"Improved transaction efficiency: The expiration mechanism can prevent transactions from hanging  for a long time, thereby reducing network congestion on the blockchain and increasing transaction confirmation speeds."}]}],"pr":"9bffe5e1ec3b2312f609bd9d2c75234640b78e38ed29e36012058fb1f4bd64e9"}