{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are some common security vulnerabilities in smart contracts on the blockchain?","a":"Vulnerability exploitation: Hackers may exploit vulnerabilities in smart contracts to perform malicious actions, such as double-spending attacks and  reentrant attacks, thereby damaging user interests."}]}],"pr":"85dc16447e3114bd4b68c88b11dff6a7abb7a2e6f3f0b49d07bad659c57c031e"}