{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why should old blockhash be avoided from being reused in transactions?","a":"Data tampering: Old blockhash may have been tampered with, leading to inaccurate transaction data, thereby affecting the  security and stability of the blockchain network.\n\n3.Transaction confirmation: In a blockchain network, transactions need to be included in new blocks to be confirmed. Reusing old blockhash may result in these transactions being unable to be processed promptly, leading to delayed transaction confirmation."}]}],"pr":"8656899c24b21ddad895adbb54ff1a7ce501902a7ad79002b261a57663ed7755"}