{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to prevent and repair smart contract vulnerabilities in blockchain?","a":"Develop and implement risk management strategies to mitigate potential security threats and protect the integrity  of the smart contract."}]}],"pr":"82cb85613d8a4a6a451870ed733e88640ca1fb9e62a5fc929d4baf10ade14e43"}