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What Is Ethereum (ETH) and How Does It Work?

Published 4 August 2026 · CryptoStart

Ethereum (ETH) is a decentralized, open-source blockchain network that enables developers to build and deploy applications. Unlike Bitcoin, which primarily functions as digital money, Ethereum is a programmable platform for a wide variety of decentralized applications (dApps).

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What Is Ethereum?

At its core, Ethereum is a global, community-run computer. It provides the infrastructure for a new kind of internet called Web3, where applications are not controlled by a single company. The network's native cryptocurrency is called Ether (ETH), which is used to pay for transactions and computational services on the network.

How Does the Ethereum Network Work?

Ethereum operates on a blockchain, which is a distributed public ledger that records all transactions. Transactions are processed and grouped into blocks by validators who stake their ETH as collateral in a process called Proof-of-Stake. This system secures the network and validates data without a central authority.

What Are Smart Contracts?

A defining feature of Ethereum is its support for smart contracts. These are self-executing programs stored on the blockchain that automatically run when predetermined conditions are met. They are the building blocks for decentralized applications, eliminating the need for intermediaries in processes like loans, agreements, or asset transfers.

Key Uses of Ethereum

The most common uses for Ethereum today include Decentralized Finance (DeFi) platforms that replicate banking services, Non-Fungible Tokens (NFTs) representing digital ownership, and a vast ecosystem of games, social networks, and marketplaces. All interactions on these applications require small fees paid in ETH.

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FAQ

What is the difference between Ethereum and Bitcoin?

While both are cryptocurrencies, their primary purposes differ. Bitcoin was designed as a peer-to-peer digital currency and store of value. Ethereum is built as a versatile, programmable platform for running decentralized applications, with ETH serving as its utility token.

How do you get ETH?

You can purchase ETH on a cryptocurrency exchange using traditional currency. You can also earn it by providing services or through staking, where you help secure the network and receive rewards.

What are gas fees in Ethereum?

Gas fees are the costs required to perform any transaction or execute a contract on the Ethereum network. These fees are paid in ETH to the validators who process the work. The fee amount fluctuates based on network demand.

Is Ethereum still using Proof-of-Work mining?

No. In September 2022, Ethereum completed its "Merge," transitioning the network from energy-intensive Proof-of-Work mining to a more efficient and sustainable Proof-of-Stake consensus mechanism.

⚠️ Educational content only, not financial advice. Crypto is volatile and risky. We may earn an affiliate commission from links, at no cost to you.

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