Ethereum ($ETH) is the world's second-largest cryptocurrency, launched by Vitalik Buterin in 2015. It is not only a digital currency but also a powerful blockchain platform that supports smart contracts and decentralized applications (DApps). Ethereum pioneered the expansion of blockchain from a simple payment system to a 'world computer', greatly promoting the development of ecosystems like DeFi and NFTs. Ethereum employs a Proof of Stake (PoS) mechanism, enhancing energy efficiency and security. $ETH serves as the platform's fuel (Gas fees) and a store of value asset, possessing broad application value and being one of the core driving forces of innovation in the blockchain industry.