Ethereum

What is Ethereum?

Ethereum (ETH) is a programmable blockchain launched in July 2015 by Vitalik Buterin and a co-founder team that included Gavin Wood, Joseph Lubin, Charles Hoskinson, and Anthony Di Iorio. Unlike Bitcoin, which is primarily a value-transfer ledger, Ethereum allows arbitrary smart contracts — code that executes deterministically when conditions are met and governs tokens, applications, and entire financial protocols.

ETH is both the network's native currency, used to pay gas fees for every transaction, and the security asset of the protocol. Since The Merge in September 2022, Ethereum has run on proof-of-stake: validators lock ETH as collateral, propose and attest to blocks, and are financially penalised for downtime or misbehaviour. In 2026, ETH is the collateral base for the majority of DeFi, the settlement asset for most stablecoins by dollar volume, and the security layer for over thirty Ethereum-anchored Layer-2 rollups.

The July 2026 spot-price recovery above $1,820 — supported by $105 million in weekly ETH spot ETF inflows — followed a bruising June that took ETH from $1,988 to $1,558 on record ETF outflows. Two structural products are quietly absorbing longer-duration demand: BlackRock's staked ETH ETF (ETHB), distributing monthly yield, and JPMorgan's JLTXX tokenised money-market fund, which runs on Ethereum and settles in ETH-denominated assets.

How Ethereum works after the Merge

Validators stake 32 ETH to participate directly in block production — or any amount via liquid staking protocols like Lido (stETH) or Rocket Pool (rETH). The consensus layer runs on Beacon Chain, which pseudo-randomly selects a validator every 12 seconds to propose the next block. Every other active validator attests to whether that block is valid, and honest attestations earn a share of the block reward while inaccurate or missing attestations forfeit part of the stake.

The execution layer — where smart contracts actually run — is separated from consensus, which allowed multiple independent client implementations to develop. In 2026, no single Ethereum client team can force a change; software diversity (Geth, Nethermind, Besu, Erigon, Reth on execution; Prysm, Lighthouse, Teku, Nimbus, Lodestar on consensus) is the network's structural defence against single-implementation bugs.

Base rewards in 2026 sit at approximately 3.0-3.7% annualised for solo staking, plus 0.3-0.8% from MEV (maximum extractable value) captured by proposer-builder separation infrastructure. Liquid staking tokens return 2.8-3.4% after protocol fees; restaking via EigenLayer adds another 0.5-2% in AVS (actively-validated service) rewards on top for participants who accept additional slashing conditions.

The Layer-2 ecosystem and rollup-centric roadmap

Most user activity in 2026 no longer happens on Ethereum L1 directly. Layer-2 rollups — chains that execute transactions off-chain and post compressed data back to Ethereum for security — handle the majority of retail traffic at fees of cents rather than dollars. The leading L2s by TVL and daily active addresses:

• Arbitrum One. The largest general-purpose L2; roughly $18 billion TVL in July 2026; home to GMX, Camelot, and a growing tokenised-equity ecosystem.
• Base (Coinbase). Fastest-growing L2 by consumer adoption; deeply integrated with Coinbase custody and fiat rails; home to Farcaster, friend.tech successors, and the majority of retail memecoin activity outside Solana.
• Optimism / Superchain. The Superchain shared-sequencer architecture unifies OP Mainnet, Zora, Mode, and dozens of other chains under one liquidity and messaging fabric.
• zkSync Era, Starknet, Linea, Scroll, Polygon zkEVM. Zero-knowledge rollups with mathematically-proven state transitions; faster finality and lower assumptions than optimistic rollups.
• Robinhood Chain. Launched July 2026 on Arbitrum Orbit; tokenised stock trading for users in 120 countries.

EIP-4844 (the Dencun upgrade in March 2024) introduced blob transactions — cheap, temporary data availability specifically for rollups — which cut L2 fees by roughly 10x overnight. The next major upgrade, Glamsterdam, is now targeted for H2 2026 after being rescheduled from H1; when it ships, it will further reduce blob costs and modestly raise base-layer throughput.

ETH tokenomics and monetary policy

Ethereum has no fixed maximum supply, unlike Bitcoin. Instead, total supply is a function of two forces: new issuance to validators (approximately 0.5% annually in 2026) and burn from base-fee transactions (EIP-1559, active since August 2021). When network activity is high, burn can exceed issuance and ETH becomes net-deflationary; during quiet periods, ETH is mildly inflationary at approximately 0.3-0.5% annually.

Total ETH supply in July 2026 sits at approximately 120.5 million. The share staked has grown to roughly 28% of supply, or ~34 million ETH, distributed across roughly 1.1 million active validators. Lido remains the largest single staking operator at around 27% of staked ETH, though its share has slowly declined from 32% peaks in 2023.

EIP-7251 (Pectra, 2025) raised the validator effective balance cap from 32 ETH to 2,048 ETH, dramatically simplifying operations for large validators and reducing beacon-chain messaging load. Pectra Plus (2026) further raised the cap to 4,096 ETH. Neither change altered rewards or slashing economics — they were operational efficiency improvements.

DeFi, stablecoins, and Ethereum as settlement

Ethereum secures the majority of on-chain USD-denominated value in 2026. Native USDC on Ethereum leads institutional and DeFi flows; USDT on Ethereum remains the deepest source of USD liquidity for large trades; stablecoins like DAI, USDe, GHO, PYUSD, and USD0 all originate on Ethereum before bridging to other chains. The stablecoin float on Ethereum sits at approximately $85 billion — larger than any other chain by more than 3x.

DeFi on Ethereum is dominated by a small number of protocols with disproportionate share: Aave (lending), Uniswap (DEX), Maker/Sky (stablecoin), Lido (staking), Compound (lending), and Curve (stableswap). Together they secure roughly $60 billion in TVL on mainnet alone, with another $30 billion across L2 deployments. Real-world assets — tokenised Treasuries, private credit, real estate — settle predominantly on Ethereum through BlackRock BUIDL, Ondo OUSG, Franklin BENJI, and the Apollo ACRED fund.

For a working framework on how Ethereum L2 fees, stablecoins, and staking yields interact, see our guide to Ethereum staking yields and validator economics. For side-by-side rate comparisons across protocols, see the independent rating of DeFi lending markets and the rating of liquid staking tokens.

Use cases in 2026

• Smart contract platform. The default settlement layer for tokens, protocols, and rollups.
• Native ETH staking. 32 ETH minimum for solo, any amount via LSTs; base 3-4% APR plus MEV.
• DeFi collateral. Aave, Maker/Sky, Morpho, and every major protocol accept ETH.
• Layer-2 gas token. ETH is the native gas asset on Arbitrum, Optimism, Base, zkSync, Linea, Robinhood Chain, and most other rollups.
• Restaking security. Via EigenLayer, ETH secures AVSs — data availability layers, oracles, sequencers.
• Real-world asset settlement. Tokenised Treasuries, MMFs, and private credit primarily issue on Ethereum.

Risks and structural questions

Ethereum's biggest structural question in 2026 is value accrual. L2s pay Ethereum in blob fees, but blob fees dropped 10x with Dencun and could drop further with Glamsterdam. If L2 activity grows but per-transaction Ethereum revenue falls faster, ETH burn slows and the net-deflationary thesis weakens. This is the central bear argument on ETH.

• Rollup revenue leakage. L2 sequencer profits currently accrue to L2 teams, not Ethereum validators. Shared sequencing and blob pricing changes could rebalance this over time — or they might not.
• Staking concentration. Lido plus the top three centralised exchanges control roughly 40% of staked ETH. This is a governance-adjacent risk, not an immediate operational one.
• Regulatory ambiguity around staking yields. Spot ETH ETFs that distribute yield (like ETHB) rely on the SEC accepting staking rewards as commodity income. A reversal would materially affect institutional product design.
• L2 fragmentation. Liquidity split across dozens of L2s creates user-experience friction. Aggregators and shared bridges (Across, LI.FI, Superchain) mitigate but do not eliminate the problem.

Outlook for Ethereum in 2026

Two catalysts define the second half of 2026 for ETH. First, delivery of Glamsterdam on the revised H2 2026 schedule. Devnet-5 testing is underway; public testnet deployment is targeted for July or August. On-schedule delivery reduces blob costs and delivers the roadmap credibility the market needs. Slippage into Q4 or beyond eats the year-end catalyst window.

Second, whether spot ETH ETF inflows sustain the July recovery. Weekly $100 million+ prints are structurally supportive; a repeat of June's outflow regime would remove the marginal bid. BlackRock's ETHB and JPMorgan's JLTXX-driven activity are less flow-sensitive than pure spot ETH ETFs, but their combined size is still smaller than the flagship spot products.

Longer-term, Ethereum's competitive positioning against Solana continues to be the defining L1 narrative. Solana's throughput and consumer app velocity have taken share in specific verticals — memecoins, high-frequency DEX trading, wallet-native consumer flows. Ethereum's structural advantage is the stablecoin-plus-tokenised-RWA settlement stack, which grows more entrenched every quarter and does not migrate easily.