**Ethereum** is a decentralized, open-source blockchain platform launched in 2015, designed to run smart contracts and decentralized applications (DApps). Unlike Bitcoin, its focus is not just to be a cryptocurrency, but a programmable network that allows the creation of autonomous systems, financial services (DeFi), tokens (NFTs), and autonomous organizations (DAOs). Its native cryptocurrency is **Ether (ETH)**, used to pay for transactions and services on the network. Ethereum 2.0, a key upgrade, migrated to a **Proof of Stake (PoS)** consensus mechanism to improve scalability, security, and sustainability. It is a fundamental pillar for innovation in Web3 and the decentralized economy.#AltcoinRevolution2028