Ethereum is the second-largest cryptocurrency by market cap and the leading smart contract platform. Launched in 2015 by Vitalik Buterin and others, it allows developers to build decentralized applications (dApps) and smart contracts on top of its blockchain. ETH is the native currency used to pay for transactions and computations on the network.
How does Ethereum work?
Ethereum uses a Proof of Stake consensus mechanism, where validators stake ETH to secure the network and earn rewards. Smart contracts — self-executing programs — run on the Ethereum Virtual Machine (EVM). Users pay "gas fees" in ETH to execute transactions, with fees varying based on network demand.
What makes Ethereum different from Bitcoin?
While Bitcoin is designed primarily as digital money and a store of value, Ethereum is a programmable blockchain that supports smart contracts and decentralized applications. Ethereum hosts the majority of DeFi, NFTs, and Web3 activity. It also uses Proof of Stake instead of Proof of Work, making it dramatically more energy-efficient than Bitcoin.
How do I buy Ethereum?
ETH is available on every major exchange including Coinbase, Binance, Kraken, and Crypto.com. You can also acquire it through DEXs like Uniswap once you have any other crypto, or via fiat on-ramps integrated into most wallet apps. After purchase, consider moving large amounts to a self-custody wallet.
Is Ethereum a good investment?
Ethereum is often considered a foundational crypto investment alongside Bitcoin, given its dominant position in smart contract platforms. However, it faces real competition from chains like Solana and Layer 2 networks, and like all crypto it is volatile. Investors should weigh the upside of Web3 growth against execution risk and competitive pressure.
What are gas fees and why do they matter?
Gas fees are the costs paid in ETH to execute transactions or interact with smart contracts on Ethereum. They fluctuate based on network demand — busier periods mean higher fees. Layer 2 networks like Arbitrum, Optimism, and Base offer significantly lower fees while still inheriting Ethereum's security.
What is staking and can I stake ETH?
Staking means locking ETH to help validate transactions, earning rewards in return (currently around 3-5% annually). You can stake directly with a 32 ETH minimum, or use liquid staking protocols like Lido or Rocket Pool with any amount. Most centralized exchanges also offer staking, though they keep custody of your ETH.
What is the future outlook for Ethereum?
Ethereum's roadmap focuses on scaling through Layer 2 networks and improvements like proto-danksharding, which dramatically reduces L2 costs. Continued growth in DeFi, real-world asset tokenization, and AI-related dApps could drive demand. Risks include competition from faster L1s and regulatory uncertainty around staking and DeFi.
