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Bitcoin vs Ethereum: what is the difference?

Both are public blockchains with a native coin, but they were built for different jobs, and that choice shapes their supply, security and risks.

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By Protocol Insights editorial teamUpdated Checked against 4 sources, 4 primary5 min read
On this page
  1. What is the main difference between Bitcoin and Ethereum?
  2. How do Bitcoin and Ethereum supply rules differ?
  3. How does mining compare with staking?
  4. What does Ethereum's programmability add?
  5. Who controls Bitcoin and Ethereum?
  6. What mistakes do beginners make when comparing Bitcoin and Ethereum?
  7. Questions readers ask
  8. Sources
The short version
  • Bitcoin is built mainly to send value; Ethereum is a platform where developers build applications.[2]
  • Only 21 million bitcoins will ever exist, while ether has a dynamic supply with no fixed cap.[1][3]
  • New bitcoins come from mining; Ethereum has used proof of stake since September 15, 2022.[1][4]
  • Bitcoin adds a block about every 10 minutes on average; Ethereum slots occur every 12 seconds.[1][4]
  • Neither network is run by a single company.[1][2]

Bitcoin is a network for sending value, with a fixed supply of 21 million coins secured by mining.[1] Ethereum is a programmable platform where developers build applications; its coin, ether, pays fees, has no fixed cap, and is secured by staking.[2][3]

What is the main difference between Bitcoin and Ethereum?

The short version is purpose. ethereum.org itself frames Bitcoin as a tool for sending value and Ethereum as a platform for building it.[2] Bitcoin's ledger mainly records who owns which coins. Ethereum's ledger also stores programs, called smart contracts, and runs them, so developers can build tokens, exchanges and other applications on top.[2]

Bitcoin came first: its first specification and proof of concept were published by Satoshi Nakamoto in 2009.[1] Vitalik Buterin proposed Ethereum in a 2013 white paper, and the network launched in July 2015.[2] For a fuller introduction to each, read what is Ethereum and our Bitcoin profile.

FeatureBitcoinEthereum
Main purposeSending and holding value[2]Programmable platform for applications[2]
Native coinbitcoin (BTC)ether (ETH)[3]
SupplyCapped at 21 million[1]No fixed cap; issuance minus burning[3]
How new coins appearMining rewards[1]Rewards to validators[3]
ConsensusProof of work (mining)[1]Proof of stake since 2022[4]
Block timingAbout every 10 minutes on average[1]A slot every 12 seconds[4]
First released2009[1]July 2015[2]

How do Bitcoin and Ethereum supply rules differ?

Bitcoin's rule is fixed and simple. The bitcoin.org FAQ says only 21 million bitcoins will ever be created, and that the number created each year is automatically halved over time.[1] Each bitcoin divides into 100,000,000 smaller units called satoshis.[1]

Ether works differently. ethereum.org contrasts Bitcoin's fixed 21 million cap with ETH's dynamic supply mechanics.[3] Two forces push in opposite directions:

  • Issuance. New ETH is issued to reward validators at a limited rate calculated by the protocol.[3]
  • Burning. A portion of every transaction fee is permanently destroyed.[3]

When the network is busy, more fees are burned; ethereum.org sums it up as high usage leading to deflation and low usage to inflation.[3]

How does mining compare with staking?

Both networks need a way for thousands of computers to agree on one history without a referee. Bitcoin uses mining: new bitcoins are generated by a competitive, decentralized process in which miners use specialised hardware and are rewarded with newly issued coins.[1] Our guide to how Bitcoin mining works shows the calculation miners repeat.

Ethereum used mining too, until it switched. A proof-of-stake chain, the Beacon Chain, launched on December 1, 2020, and on September 15, 2022 the two were joined in an upgrade called the Merge.[4] Since then, validators lock up ETH to earn the right to process transactions.[2] ethereum.org estimates the Merge cut Ethereum's energy use by about 99.95%.[4] See proof of work vs proof of stake for the trade-offs, and what is staking for how validators work.

What does Ethereum's programmability add?

On Ethereum, every action is paid for in ETH. ethereum.org says ether is used to pay transaction fees, known as gas, for using the network and the applications built on it.[3] That is why you need ETH even to move a token that is not ETH; see coins vs tokens and gas fees.

Bitcoin is not limited to simple payments. The bitcoin.org FAQ notes that users can take part in more complex contracts, such as payments that need approval from several signers before they are accepted.[1] But building general applications is Ethereum's design goal rather than Bitcoin's.[2] More features also mean more places for things to go wrong: an app on Ethereum does what its code says, which may not be what its website promises. Read what a smart contract is before you use one.

Who controls Bitcoin and Ethereum?

Neither network has a chief executive. The bitcoin.org FAQ says Bitcoin is controlled by all Bitcoin users around the world.[1] ethereum.org says no single person or company runs Ethereum and that there is no CEO, board or central authority; the Ethereum Foundation still funds research and development.[2]

Changes happen differently in practice. Ethereum ships coordinated upgrades fairly often, such as the planned Glamsterdam upgrade. Either way, "decentralised" does not mean "protected": there is no customer service desk that can reverse a payment. Bitcoin transactions, for example, are irreversible once confirmed and can only be refunded by the recipient.[1]

What mistakes do beginners make when comparing Bitcoin and Ethereum?

  • Assuming ether has a 21 million cap. That rule belongs to Bitcoin; ETH supply is dynamic.[3]
  • Thinking the Merge made Ethereum cheap or fast. ethereum.org lists both as misconceptions: the Merge was never intended to lower gas fees, and block timing only moved from about 13.3 to 12 seconds.[4]
  • Believing Bitcoin is anonymous. The bitcoin.org FAQ says it is not and cannot offer the same privacy as cash.[1]
  • Believing you need 32 ETH to run Ethereum software. ethereum.org says running a node requires no ETH at all; only validators stake.[4]
  • Treating the comparison as a buying guide. Different designs carry different risks. Both coins are volatile, and this page is not a recommendation to buy either.

Questions readers ask

Is Ethereum a copy of Bitcoin?

No. Ethereum was proposed in 2013 as a blockchain for money and apps, and launched in July 2015; ethereum.org describes it as programmable infrastructure rather than only money.[2]

Which has a limited supply, bitcoin or ether?

Bitcoin. Only 21 million bitcoins will ever be created.[1] Ether has dynamic supply: new ETH is issued to validators and part of every fee is burned.[3]

Is Ethereum faster than Bitcoin?

Ethereum produces a slot every 12 seconds, while Bitcoin adds a block about every 10 minutes on average.[4][1] Settlement time also depends on fees, congestion and how many confirmations a recipient waits for.

Can I use bitcoin to pay Ethereum fees?

No. Fees on Ethereum are paid in ETH.[3]

Bottom line

Bitcoin and Ethereum share the idea of a public ledger, but Bitcoin keeps a narrow focus on fixed-supply money secured by mining, while Ethereum trades simplicity for programmability, a flexible supply and staking. Understanding those design choices tells you more about each network's fees and risks than any price chart.

Sources

  1. bitcoin.org, Frequently Asked Questions (2026)Primary source
  2. ethereum.org, What is Ethereum? (2026)Primary source
  3. ethereum.org, What is ether (ETH)? (2026)Primary source
  4. ethereum.org, The Merge (2026)Primary source

Educational content only — not financial, investment, legal or tax advice. Crypto-assets are high-risk and you could lose all the money you put in. Rules differ by country; check with your national regulator. See our risk disclosure and editorial policy.

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