{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security vulnerabilities of blockchain?","a":"51% Attack: Blockchain faces the risk of a 51% attack, where attackers control over 50% of the blockchain network's computing power, allowing  them to tamper with transaction records and control the network."}]}],"pr":"7a0ac52e4f14ebf099b0be71b115444ecf6efe7f452c8fe4cbda2864aa3a1880"}