$ETH Ethereum (ETH) is the second largest cryptocurrency in the world, and it is not only an important asset in the field of digital currency but also one of the core driving forces of the entire blockchain technology ecosystem. ETH is not only a medium of exchange but also the 'fuel' of the Ethereum blockchain network, used to pay for the execution costs of smart contracts. With Ethereum's transition from Proof of Work (PoW) to Proof of Stake (PoS) mechanism, ETH's energy consumption has significantly decreased, and network efficiency has greatly improved. In addition, Ethereum's decentralized finance (DeFi) and non-fungible token (NFT) ecosystems are flourishing, with ETH playing a key role in driving the widespread application of blockchain technology. However, ETH's price is highly volatile, and investors need to be cautious. At the same time, with continuous technological upgrades and changes in the regulatory environment, the future development of ETH is full of opportunities and challenges.