$ETH ETH 2.0: Transition from PoW to PoS

In September 2022, Ethereum completed the highly anticipated "Merge", officially transitioning from Proof of Work (PoW) to Proof of Stake (PoS), an upgrade known as ETH 2.0. PoW relies on miners to verify transactions through computational power, which is extremely energy-intensive, while PoS verifies transactions through holders staking ETH, significantly reducing energy consumption. According to official data, after the Merge, Ethereum's energy consumption decreased by approximately 99.95%, making it a more environmentally friendly blockchain. Additionally, PoS enhances the network's security and scalability, as stakers need to lock up ETH to participate in validation, reducing the risk of 51% attacks. However, PoS also presents new challenges, such as the staking threshold potentially leading to centralization risks. Nevertheless, the success of ETH 2.0 marks a crucial step towards a more sustainable future for Ethereum.