{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do security mechanisms in blockchain prevent 51% attacks?","a":"Proof of Work (PoW) consensus mechanism: The  PoW consensus mechanism requires nodes to compete for the generation of new blocks by solving complex mathematical problems. Attackers need to invest a large amount of computing resources in a short period of time to achieve dominance in the network."}]}],"pr":"f7302ad5568a8dacce6e6dc4ccff7fcac7d1e958f5a8314050446e5c06273d21"}