{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security risks associated with blockchain technology?","a":"Data tampering:  Although blockchain uses cryptographic methods to ensure that data cannot be tampered with, attackers may attack the blockchain by controlling more than 51% of the computing power, thereby tampering with the data."}]}],"pr":"7b21a1e4056b3b11174d3764b4f0fb552f1e4bb6fba8e013c83c47bc9c6e39ac"}