{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to prevent replay attacks on the blockchain?","a":"Implement hard fork protection measures: Before a hard fork occurs, sign and verify transactions to ensure their authenticity and effectiveness.  After the hard fork, monitor transactions in real-time on the new chain, and promptly discover and handle malicious transactions on the new chain."}]}],"pr":"69d7edd40ec447f8aa1ce1784bb2b1d5ca0a70a0805c9566f14770276631a0f3"}