Ethereum is the world’s largest programmable blockchain. Where Bitcoin was designed to be digital money, Ethereum was designed to be a global computer, a platform anyone can build on, without asking permission from anyone.
It powers decentralized finance, tokenized real-world assets, NFTs, stablecoins, and an expanding layer of financial infrastructure that major banks and asset managers are now building on top of. BlackRock listed its tokenized Treasury fund on Ethereum. JPMorgan launched its money market fund on Ethereum. Over $27 billion in real-world assets are tokenized on Ethereum. It is the most used, most developed, and most institutionally adopted smart contract platform in the world.
This guide explains what Ethereum is, how it works, what makes it different from Bitcoin, and what role it plays in the financial system today.
Who created Ethereum and why
Ethereum was proposed in 2013 by Vitalik Buterin, a 19-year-old programmer and Bitcoin enthusiast who believed Bitcoin’s scripting language was too limited. His vision was a blockchain that could run any application, not just transfer value, but execute any programmable agreement between parties.
The Ethereum network went live on July 30, 2015. Buterin has remained the most prominent figure in Ethereum’s development ever since, though the protocol is governed by a broader community of developers, researchers, and validators.
The core insight behind Ethereum was simple but revolutionary: if you could put a programmable computer on a blockchain, you could run any kind of application without a central server, without a company controlling it, and without the ability to shut it down.
How Ethereum works
Ethereum runs on a blockchain, a public ledger copied across thousands of computers worldwide. Like Bitcoin, no single person or institution controls it. But unlike Bitcoin, Ethereum’s blockchain is programmable.
The key innovation is the smart contract which is a self-executing code stored on the blockchain that runs automatically when conditions are met. A smart contract has no owner, cannot be altered once deployed, and executes exactly as written, every time. No lawyer, no bank, no intermediary required.
When you interact with an Ethereum application by swapping tokens on a decentralized exchange, borrowing against crypto collateral, minting an NFT, you are triggering smart contracts. The transaction is processed by Ethereum’s network of validators, recorded permanently on the blockchain, and settled in seconds.
Transactions on Ethereum require paying a fee in ETH called gas. Gas compensates validators for the computation required to process your transaction and prevents spam. Gas fees vary based on network demand, when the network is busy, fees rise; when it is quiet, they fall. Layer 2 networks (covered below) have dramatically reduced the cost of transacting on Ethereum.
The Merge — from Proof of Work to Proof of Stake
In September 2022, Ethereum completed one of the most significant technical transitions in blockchain history: the Merge. It switched its consensus mechanism from Proof of Work, the energy-intensive mining system used by Bitcoin, to Proof of Stake.
Under Proof of Stake, validators lock up ETH as collateral to participate in validating transactions. If they behave honestly, they earn staking rewards. If they try to cheat the network, their staked ETH is penalised or destroyed in a process called slashing. This system secures the network without requiring massive energy expenditure. Ethereum’s energy consumption dropped by over 99% after the Merge.
The Merge also introduced a fee-burning mechanism through EIP-1559, which destroys a portion of every transaction fee permanently. During periods of high network activity, Ethereum becomes deflationary. More ETH is burned than is created. This supply dynamic has become a significant part of the investment thesis for ETH holders.
Staking Ethereum in 2026
Over 36 million ETH which is more than 30% of the total circulating supply, is currently staked on the Ethereum network, securing it through 1.1 million active validators. Staking currently yields approximately 3–4% APY through consensus layer rewards, rising higher for validators who also capture MEV (Maximal Extractable Value).
In March 2026, the SEC and CFTC jointly classified ETH as a digital commodity and confirmed that staking does not constitute a securities offering. This was a significant regulatory clarification that opened the door for institutional staking products. BlackRock launched its staked ETH ETF (ETHB) shortly after, pulling in $155 million on its first day.
For individual holders, staking options range from running a full validator node (requiring 32 ETH) to liquid staking through protocols like Lido, where any amount can be staked in exchange for a liquid token representing the staked position.
Layer 2 — how Ethereum scales
One of Ethereum’s biggest challenges has been transaction throughput. The base layer processes roughly 15–30 transactions per second, far less than traditional payment networks. Layer 2 solutions solve this by processing transactions off the main chain while inheriting Ethereum’s security.
The dominant Layer 2 approach in 2026 is rollups, networks that batch thousands of transactions together, compress them, and post a proof to Ethereum mainnet. Users get fast, cheap transactions; Ethereum gets the security anchor. Major rollups including Arbitrum, Optimism, and Base (built by Coinbase) process far more transactions than Ethereum mainnet itself.
The Fusaka upgrade, activated in December 2025, implemented PeerDAS which is a technology that increases data availability for Layer 2 networks and lowers fees by up to 8x. The upcoming Glamsterdam upgrade in H1 2026 will further improve Layer 1 scalability through block-level changes designed to dramatically increase throughput.
For a deep dive into Ethereum’s current market structure, Layer 2 dominance, and institutional positioning:
⟶ Ethereum Structural Breakdown: Liquidity, Layer 2 Dominance & Market Positioning (April 2026)What Ethereum is used for
Decentralized Finance (DeFi): Ethereum hosts the majority of the world’s DeFi activity of lending, borrowing, trading, and yield generation without banks or brokers. Total value locked across Ethereum’s DeFi ecosystem runs into the hundreds of billions of dollars. You can read our full guide to DeFi for a deeper breakdown.
Tokenized real-world assets: Ethereum is the dominant blockchain for institutional RWA tokenization, hosting approximately 65% of all tokenized real-world asset value. BlackRock’s BUIDL fund, JPMorgan’s MONY fund, and Franklin Templeton’s on-chain money market funds all run on Ethereum. Read more in our breakdown of institutional adoption and tokenization.
Stablecoins: The majority of USDC and a significant portion of USDT circulate on Ethereum. Stablecoins are the settlement layer for institutional crypto finance, and Ethereum is where most of that settlement happens.
NFTs: Ethereum was and remains the primary network for non-fungible tokens that are unique digital assets representing ownership of art, collectibles, gaming items, and increasingly real-world property rights.
Smart contract infrastructure: Chainlink, the oracle network that connects blockchains to real-world data, runs primarily on Ethereum. Most DeFi protocols, tokenization platforms, and blockchain applications are built on or settle through Ethereum.
Ethereum vs Bitcoin — key differences
Bitcoin and Ethereum are often compared but serve fundamentally different purposes.
Bitcoin is designed to be digital money, scarce, simple, and secure. Its codebase changes rarely and deliberately. Its primary use case is storing and transferring value without a trusted third party.
Ethereum is designed to be programmable infrastructure, flexible, expressive, and capable of running any application. Its development pace is significantly faster, with major upgrades shipping regularly.
Bitcoin has a hard cap of 21 million coins. Ethereum has no hard supply cap, though its fee-burning mechanism creates deflationary pressure during periods of high usage.
Bitcoin runs on Proof of Work. Ethereum runs on Proof of Stake.
Most DeFi, NFT, and tokenization activity happens on Ethereum. Most store-of-value and corporate treasury activity happens with Bitcoin. The two are complementary rather than competing, they occupy different roles in the broader crypto ecosystem.
ETH as an investment
ETH is the second largest cryptocurrency by market cap and the most used blockchain in the world by transaction volume and developer activity. It trades around $2,063 as of early April 2026, down approximately 39% year-to-date from its late 2025 highs, reflecting broader macro pressure across risk assets.
The investment case for ETH rests on several factors: the fee-burning mechanism creating deflationary pressure during high activity periods, staking yield providing passive income to holders, the network’s dominance in DeFi and institutional tokenization, and a clear upgrade roadmap continuing to improve scalability and efficiency.
The risks are real too: competition from faster Layer 1 blockchains like Solana, the L2 value-dilution question (as Layer 2 networks capture more activity, less fee revenue flows to ETH holders), and the ongoing challenge of converting network usage into price appreciation, Q1 2026 saw record network transactions while the price fell 39%.
Frequently asked questions
What is the difference between Ethereum and ETH? Ethereum is the blockchain network. ETH is the native cryptocurrency that powers it used to pay transaction fees and as staking collateral. When people say they “bought Ethereum,” they typically mean they bought ETH.
Does Ethereum have a maximum supply? No. Unlike Bitcoin’s 21 million cap, Ethereum has no hard supply limit. However, the EIP-1559 fee-burning mechanism destroys ETH with every transaction, creating deflationary pressure during periods of high network usage.
What is gas on Ethereum? Gas is the fee paid to validators for processing transactions. It is denominated in small units of ETH called gwei. Gas prices vary based on network congestion. Layer 2 networks offer dramatically lower gas costs than Ethereum mainnet.
Is Ethereum safe to use? The Ethereum protocol itself has operated without a major failure since 2015. Individual smart contracts can have bugs, this is why using audited, well-established protocols matters. Storing ETH safely follows the same principles as Bitcoin: self-custody with strong security practices is safest.
What is the Ethereum roadmap? Ethereum’s development follows a multi-year roadmap focused on scalability, security, and decentralization. The Fusaka upgrade shipped in December 2025. Glamsterdam is targeting H1 2026. Hegotá is scheduled for H2 2026. Each upgrade improves throughput, reduces fees, and strengthens the network’s long-term architecture.
This article is regularly updated to reflect current network developments and market conditions.
