#WriteToEarnUpgrade 
Ethereum is a decentralized blockchain platform that enables smart contracts and decentralized applications (dApps). Launched in 2015, it extends beyond simple transactions to support programmable code execution ��.Core FeaturesEthereum operates as an open-source network of nodes forming the Ethereum Virtual Machine (EVM), which executes smart contracts written in languages like Solidity. It records transactions on a distributed ledger, with blocks added roughly every 12 seconds, linked cryptographically for immutability ��. Ether (ETH) powers the network, covering gas fees for computations and rewarding validators �.How It WorksTransactions trigger smart contracts, validated by consensus among nodes without central control. Originally using Proof-of-Work, Ethereum shifted to energy-efficient Proof-of-Stake via upgrades like Ethereum 2.0, introducing sharding for scalability ��. This setup ensures censorship resistance, anonymity for users, and fault tolerance across a peer-to-peer framework �.Key Differences from BitcoinUnlike Bitcoin's focus on payments with limited scripting, Ethereum supports Turing-complete contracts for complex apps in DeFi, NFTs, gaming, and supply chains. Its flexible supply contrasts Bitcoin's cap, enabling faster blocks and broader utility ��.Major Upgrades and ImpactThe transition to Proof-of-Stake reduced energy use dramatically while boosting throughput and lowering fees. Ethereum now anchors an ecosystem of EVM-compatible chains like Polygon and Avalanche, fostering interoperability �. It powers innovations like stablecoins and ICOs, positioning it as a foundation for decentralized finance �.$ETH
