What Is Ethereum and How Is It Different From Bitcoin?
Direct answer
Ethereum vs Bitcoin: the key differences
Bitcoin is designed mainly as scarce digital money with a fixed 21 million coin limit and proof-of-work mining. Ethereum is a programmable network that runs smart contracts and apps; its coin, ether, pays the fees, has no hard supply cap and has been secured by proof of stake since September 2022. They are different bets, and ether has been more volatile than bitcoin.
- Bitcoin: fixed 21 million supply cap, proof of work, built as money
- Ethereum: smart-contract platform, ether pays network fees, no hard cap
- Ethereum moved to proof of stake on September 15, 2022 (the Merge)
- Our chart: ether fell further than bitcoin in 2022 and lagged it in 2023 and 2024
People often lump bitcoin and ether together as "crypto", but the two networks were built for different jobs. That difference shows up in how supply works, how the networks are secured and how the prices behave.
What people on X are asking
The question usually comes as a choice rather than a definition. In April 2026 one reply simply asked a trader which to buy, ETH or BTC. In September another user, watching a falling market, asked whether to buy ETH or BTC with a new wallet. A third pushed back on both, arguing for other coins entirely. None explain what the two assets are, so we start there, without telling anyone which to buy.
The fact-checked answer
Bitcoin's job: digital money with a fixed supply. The 2008 Bitcoin whitepaper describes a peer-to-peer electronic cash system. The protocol caps total issuance at 21 million BTC, and new coins are released to miners on a schedule that halves roughly every four years (we cover that in does the halving still matter). Miners secure it with proof of work, spending electricity to compete to add the next block.
Ethereum's job: a shared computer for apps. ethereum.org describes Ethereum as a network that runs programs called smart contracts. Stablecoins, decentralised exchanges, lending protocols and NFTs mostly live on Ethereum or on networks built around it. Ether (ETH) is the coin used to pay "gas" fees for running those programs.
Different supply rules. Ether has no fixed maximum. New ETH is issued to validators, while part of every transaction fee is burned (destroyed) under a 2021 change known as EIP-1559. Whether total supply rises or falls in a given month depends on how busy the network is.
Different security models. On September 15, 2022, Ethereum switched from proof of work to proof of stake in an upgrade called the Merge. Validators now lock up (stake) ETH and can lose part of it for misbehaving. ethereum.org says the switch cut the network's energy use by about 99.95%. Bitcoin still uses proof of work.
Both trade as spot ETFs in the US. Spot bitcoin ETFs began trading in January 2024 and spot ether ETFs in July 2024. That makes both easy to hold in a brokerage account without changing what the networks do. Our page on bitcoin ETFs vs holding coins directly covers the custody trade-offs.
UXS chart
Ether vs bitcoin since 2016 (log scale, US dollars)
Ether (ETH), USD: latest
$2,128
November 9, 2026
Bitcoin (BTC), USD: latest
$75,091
November 9, 2026
Year by year: Ether (ETH), USD
Computed by UXS from the same data as the chart. Tap a column header to sort. * = year to date (latest data November 9, 2026).
| 2026* | $2,128 | -28.5% | $3,339 | $1,566 | $75,091 |
| 2025 | $2,976 | -11.3% | $4,831 | $1,472 | $87,696 |
| 2024 | $3,353 | +47.0% | $4,072 | $2,209 | $94,384 |
| 2023 | $2,281 | +90.8% | $2,381 | $1,200 | $42,301 |
| 2022 | $1,195 | -67.6% | $3,826 | $996.44 | $16,531 |
| 2021 | $3,683 | +398.5% | $4,806 | $731.00 | $46,245 |
| 2020 | $738.90 | +475.4% | $754.45 | $111.04 | $29,027 |
| 2019 | $128.41 | -1.6% | $334.70 | $103.21 | $7,158 |
| 2018 | $130.53 | -82.4% | $1,386 | $83.00 | $3,692 |
| 2017 | $741.27 | +8984.2% | $826.65 | $8.18 | $13,863 |
| 2016 | $8.16 | – | $20.99 | $6.75 | $973.37 |
What the price history shows. Using Coinbase daily prices from FRED, ether's highest close in the series was $4,831 on August 21, 2025; on November 9, 2026 it closed at $2,128, about 56% lower. Bitcoin's record close was $124,720 on October 5, 2025 and it closed at $75,091 on November 9, 2026, about 40% below. The ratio of the two (ETH price divided by BTC price) peaked near 0.150 in June 2017 and stood near 0.028 in November 2026, so ether has lost ground against bitcoin.
Calendar-year price change: ether vs bitcoin
Computed by UXS from Coinbase daily closes on FRED (CBETHUSD, CBBTCUSD), last close of each year. Price only. Tap a column header to sort.
| 2021 | +398.5% | +59.3% | Ether |
| 2022 | −67.6% | −64.3% | Bitcoin (fell less) |
| 2023 | +90.8% | +155.9% | Bitcoin |
| 2024 | +47.0% | +123.1% | Bitcoin |
| 2025 | −11.3% | −7.1% | Bitcoin (fell less) |
The pattern is typical of a higher-beta asset: ether outperformed hugely in the 2021 boom and then did worse in most of the years after. Past patterns do not predict the next cycle.
Both networks use wallets that are usually backed up with a seed phrase.
For the price side, see what moves the price of Ethereum against Bitcoin and the dollar.
See also how Ethereum staking works and where the yield comes from.
Ethereum's consensus changed in 2022; see why Ethereum switched from proof of work to proof of stake.
Decision helper
| If your main question is… | Bitcoin | Ethereum |
|---|---|---|
| "I want the simplest, most widely held crypto asset" | Closer fit | Less simple |
| "I care about apps, stablecoins and DeFi activity" | Limited | Closer fit |
| "I want a fixed, predictable supply" | Fixed 21 million cap | No cap; net supply varies |
| "Can I earn yield on it?" | Not natively | Staking pays validators (with risks) |
| "Which has swung more?" | Large swings | Larger swings in most years since 2022 |
Checklist before you hold either
- Write down why you want exposure: a bet on digital money, on an app platform, or both.
- Decide the maximum share of savings you can afford to see fall 60–80%.
- Choose custody: exchange account, self-custody wallet, or a spot ETF.
- If you stake ether, read how lock-ups, slashing and tax reporting work.
- Plan how you will track cost basis for taxes; see how crypto gains are taxed in the US.
- Set a review date instead of reacting to every headline.
Quick comparison you can remember
Bitcoin = scarce digital money, mined with energy, supply capped. Ethereum = programmable network, fees paid in ether, secured by staked ETH, supply set by issuance minus burn. Same market mood, different engines.
Common mistakes
- Treating ether as "cheaper bitcoin" because one coin costs less. Price per coin says nothing about value; supply and use differ.
- Assuming staking yield is free money. Validators can be penalised and staked ETH may not be instantly withdrawable.
- Ignoring that both assets have fallen more than 60% in a single year (2022).
- Forgetting fees: moving tokens on Ethereum costs gas, which spikes when the network is busy.
FAQ
Is Ethereum a copy of Bitcoin?
No. It borrows the idea of a blockchain but adds a general-purpose programming layer for smart contracts. Its coin, monetary policy and security model differ.
Does Ethereum have a supply limit?
There is no hard cap. Issuance to validators is offset by fee burning, so supply can rise or fall depending on network use.
What was the Merge?
The September 15, 2022 upgrade that moved Ethereum from proof of work to proof of stake, removing miners from the network.
Which is riskier, ether or bitcoin?
By price swings, ether has usually been more volatile, with bigger gains in 2021 and bigger losses or weaker returns in most years since. Both are high-risk assets.
Can I buy ether through an ETF?
Yes, US-listed spot ether ETFs have traded since July 2024. They hold ether for you but charge fees and you cannot use the coins on the network.
Why has ETH fallen against BTC?
The ETH/BTC ratio reflects relative demand. Competition from other smart-contract networks, the rise of bitcoin ETFs and changing fee income are commonly cited; no single cause is proven.
Is ether a security?
Its status has been debated by regulators for years and treatment differs by country. Check current guidance from the SEC and your local regulator.
Sources
- Bitcoin whitepaper (Satoshi Nakamoto, 2008)
- ethereum.org: What is Ethereum?
- ethereum.org: The Merge
- FRED: Coinbase Ethereum (CBETHUSD)
- FRED: Coinbase Bitcoin (CBBTCUSD)
- SEC Investor.gov: Crypto assets
Facts checked November 10, 2026. X posts are cited as evidence of the question, not of the answer.