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Ethereum is a decentralized platform enabling smart contracts and applications without intermediaries, with its Ether (ETH) cryptocurrency ranking second by market cap.

About this subject

Ethereum, launched in 2015 by Vitalik Buterin and other developers, revolutionized the cryptocurrency world by introducing smart contracts. Unlike Bitcoin, which primarily serves as a store of value, Ethereum enables decentralized code execution on its blockchain, powering financial applications, games, NFTs, and more. Its native cryptocurrency, Ether (ETH), is used to pay transaction fees and incentivize miners (or validators after the transition to Proof of Stake in 2022, known as The Merge).

The Ethereum network has undergone several major upgrades, such as the Byzantium hard fork and the shift to Proof of Stake, which reduced its energy consumption by about 99.95%. This change was crucial for improving scalability and sustainability. Additionally, layer-2 solutions like Optimism and Arbitrum help reduce fees and congestion while maintaining mainnet security.

Ethereum is the foundation for most decentralized finance (DeFi) projects, with protocols like Uniswap, Aave, and Compound moving billions of dollars. It is also home to famous NFTs such as CryptoPunks and Bored Ape Yacht Club. Currently, ETH is traded on all major exchanges and accepted as payment by various online services.

The Ethereum community is one of the most active in open-source development, with thousands of contributors working on continuous improvements. The platform faces challenges like competition from faster blockchains (Solana, Avalanche) and government regulation, but maintains its position as a leader in decentralized innovation.

Frequently Asked Questions

What differentiates Ethereum from Bitcoin?

While Bitcoin focuses on being a digital currency and store of value, Ethereum is a programmable platform enabling smart contracts and decentralized applications (dApps), with its own cryptocurrency called Ether.

How does Ethereum's transition to Proof of Stake work?

The transition, called The Merge, occurred in September 2022, replacing mining with validation. Validators now lock ETH as collateral to propose and attest blocks, drastically reducing energy consumption.

What are the main uses of Ethereum today?

Ethereum is used for decentralized finance (DeFi), NFTs, blockchain gaming, digital identity, voting systems, and more. It is the foundation for most innovative projects in the crypto space.