{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security vulnerabilities of blockchain?","a":"Smart contract vulnerabilities: Smart contracts are a core component of blockchain technology, but the complexity of their  programming languages can lead to security vulnerabilities. For example, the image shows an example of a smart contract vulnerability."}]}],"pr":"3fd29ea5a6751744b65d347922c8de01442429e5e1a56bb737ed72cd66a0bd66"}