Ethereum
Ethereum is a decentralized blockchain platform that enables smart contracts and decentralized applications (dApps). Its native cryptocurrency is Ether (ETH).
What Is a Ethereum?
Ethereum is a decentralized, open-source blockchain platform. Developers build and deploy smart contracts and decentralized applications (dApps) on it. Its native cryptocurrency, Ether (ETH), powers transactions and network operations.
Ethereum works through a global network of nodes. Users broadcast transactions, which validators process using proof-of-stake consensus. The Ethereum Virtual Machine (EVM) executes smart contracts—self-enforcing code—in a deterministic way. For example, a smart contract might automatically transfer ETH when conditions meet, like in a decentralized exchange.
Ethereum matters because it introduced programmable blockchains. It enables DeFi protocols, NFTs, and DAOs without intermediaries. Security comes from decentralization: no single entity controls it, and immutability protects data. Stakers lock ETH to validate blocks, earning rewards while securing the network.
Key characteristics include Turing-complete scripting via languages like Solidity. Ethereum supports ERC-20 and ERC-721 token standards. Ongoing upgrades, such as sharding and layer-2 solutions like Polygon, address scalability. Synonyms: ETH, Ether.
Cryptocurrency is a digital or virtual currency secured by cryptography, operating on decentralized blockchain networks to enable secure, peer-to-peer transactions.
Read full definitionIn cryptocurrency, a swap is the direct exchange of one token for another on a blockchain, often via decentralized exchanges (DEXs) without intermediaries.
Read full definitionDeFi (Decentralized Finance) refers to a set of financial services, such as lending and trading, built on blockchain technology without traditional intermediaries like banks.
Read full definitionDecentralization spreads control and data across many independent nodes in a blockchain network, eliminating reliance on a single authority.
Read full definitionERC-20 Token is a fungible token standard on the Ethereum blockchain. It defines rules for creating, transferring, and managing tokens uniformly.
Read full definitionA token is a digital asset on a blockchain that represents value, ownership, utility, or access rights. Examples include ERC-20 tokens on Ethereum.
Read full definitionPolygon is a layer-2 scaling solution for Ethereum that enables faster, cheaper transactions via its Proof-of-Stake sidechain. Native token: MATIC (also called Polygon PoS).
Read full definitionReal-World Examples
Example 1: Traders use Uniswap, a decentralized exchange on Ethereum. They connect a wallet like MetaMask, swap ETH for USDC, and pay gas fees in ETH to execute the smart contract trade.
Example 2: Artists mint NFTs on OpenSea using Ethereum's ERC-721 standard. They upload art, deploy a smart contract via Remix IDE with Solidity code, and record ownership on the blockchain for ETH.
Example 3: Users stake ETH on Lido to secure the network. They deposit 32 ETH into a staking smart contract, receive stETH tokens, and earn rewards from proof-of-stake validation.
In cryptocurrency, a swap is the direct exchange of one token for another on a blockchain, often via decentralized exchanges (DEXs) without intermediaries.
Read full definitionA stablecoin is a cryptocurrency designed to maintain a stable value, typically pegged to a fiat currency like the US dollar or backed by reserves.
Read full definitionLiquid staking lets users stake crypto assets to secure a network and receive a liquid derivative token, like stETH from Lido, usable in DeFi while earning rewards.
Read full definitionReady to Choose a Secure Wallet?
Use our tools to find the right hardware wallet for your needs.