{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do the security mechanisms of blockchain counter the behavior of malicious nodes?","a":"Consensus Mechanism: The consensus mechanism in the blockchain system is crucial for ensuring that data is not tampered with. This mechanism requires all nodes in a blockchain to reach agreement on the data in a block, and only data approved by more than half of the nodes can be written into the blockchain. Thus, if a malicious node wants to tamper with the data in the blockchain, it needs to tamper with the data of more than half of the nodes, which is virtually impossible  in practical operations."}]}],"pr":"b83709f93571544ee9b1213c613ed31ce6a3520d4cb5edbe41ccfb679bb07a35"}