{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do blockchain consensus mechanisms ensure the security and credibility of data?","a":"The consensus mechanism of blockchain ensures the security and credibility of data through a decentralized approach. It reaches consensus between different nodes to prevent data tampering and forgery.  The main consensus mechanisms include Proof of Work (PoW) and Proof of Stake (PoS).↵↵In the Proof of Work (PoW) mechanism, nodes need to invest a large amount of computing power to solve complex mathematical problems in order to obtain the right to record transactions. This mechanism makes it difficult for attackers to tamper with blockchain data because attackers need to consume enormous computing resources to change confirmed transactions. However, the PoW mechanism has its shortcomings, such as high energy consumption and slow transaction processing speed."}]}],"pr":"72fc2aa51832d3a63f7e01b348a4012efaad9ab13986b929887bbab5ffcfc7e7"}