What is Ethereum (ETH)? Overview and Key Features

WhaleScanFebruary 6, 2026

What is Ethereum (ETH)?

Ethereum is an open-source blockchain platform proposed by Vitalik Buterin and is the first large-scale network to support smart contracts. While Bitcoin focused on "digital currency," Ethereum became the foundation for decentralized applications (dApps) and the DeFi (Decentralized Finance) ecosystem.

Key Features

  • Smart contracts: Self-executing code that runs when conditions are met, enabling transactions, lending, NFTs, and more without intermediaries.

  • EVM (Ethereum Virtual Machine): A standard runtime that executes smart contracts written in various programming languages.

  • Proof of Stake (PoS): After The Merge in 2022, energy consumption dropped significantly, and staking enables security and reward distribution.

  • Ecosystem: Thousands of dApps, including Uniswap, Aave, and OpenSea, run on Ethereum.

Role of the ETH Token

ETH is used to pay gas fees (transaction costs), participate as a validator through staking, and serve as a medium of exchange in DeFi and NFT markets. Understanding Ethereum is fundamental to understanding Web3 and DeFi.

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