{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to prevent replay attacks on the blockchain?","a":"Ensure network security: Strengthen the  communication security between nodes, use encryption technology to protect data transmission, and prevent malicious nodes from tampering with or intercepting transaction data."}]}],"pr":"cbc73fc49d1f67f726e45c5fffdbf5a327910f84e50f9a0590fb10b7d8173b44"}