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What is the difference between Bitcoin and Ethereum?
Bitcoin is the network; bitcoin (BTC) is its native asset. Ethereum is the network; ether (ETH) is its native asset. Bitcoin emphasizes transferring value between people. Ethereum supports applications that run through smart contracts—software that executes rules on the network.
That distinction matters: using an Ethereum application can involve risks from its code and interactions, in addition to risks associated with holding ETH. Network capabilities also do not establish whether either token is a suitable investment.
Bitcoin vs. Ethereum at a glance
| Comparison | Bitcoin | Ethereum |
|---|---|---|
| Primary purpose | Peer-to-peer digital currency and value transfer | Programmable platform for applications and digital economies |
| Consensus | Proof-of-work mining | Proof-of-stake validation |
| Programmability | More limited scripting in the cited comparison | Smart contracts are a core capability |
| Supply design | Protocol maximum of 21 million BTC | No fixed supply cap in the cited comparison; ETH issuance and burning interact |
| Network uses | Value transfer and store-of-value use | Fees, smart contracts, applications, tokens, and other assets |
| Ways to get exposure | Direct bitcoin ownership or an investment product | Direct ether ownership or an investment product |
The feature comparison and supply descriptions are from Ethereum.org’s Bitcoin-versus-Ethereum comparison, last updated August 10, 2026. A supply rule describes protocol design; it does not predict market price.
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What are Bitcoin and Ethereum used for?
Bitcoin: transferring value
Bitcoin’s primary design focus is peer-to-peer digital currency and value transfer. Some holders also treat bitcoin as a store-of-value asset, but that use does not make its market price stable or guarantee that it will preserve purchasing power.
Ethereum: programmable applications
Ethereum’s smart contracts support applications such as decentralized finance, games, tokens, and digital collectibles. This flexibility expands the things people can do on the network, but it also means users may interact with complex software and application-specific risks.
In either case, distinguish the network’s utility from the investment case for its native token. A network can support useful activity without establishing that its token will rise in value.
How do their consensus and supply designs differ?
Bitcoin uses proof of work, in which miners contribute computing work to help secure the network. Ethereum uses proof of stake, in which validators participate based on staked ETH. These are different operating and security designs, not a simple ranking that proves one network is safer.
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Ethereum.org says Ethereum’s 2022 transition from proof of work to proof of stake reduced its energy consumption by more than 99 percent. That is a transition-related reduction reported on its page last updated August 10, 2026; it is not a full lifecycle comparison of all environmental effects across Bitcoin and Ethereum.
Bitcoin’s protocol specifies a maximum supply of 21 million BTC. Ethereum has no fixed supply cap in the cited comparison: ETH is issued in relation to the amount staked and burned in relation to network activity. Neither supply design, by itself, tells you what either asset will be worth.
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Are Bitcoin or Ethereum faster or cheaper to use?
There is no dependable universal winner on speed or transaction cost. Fees, execution, and confirmation or finality depend on network conditions and on what transaction is being made. Layer-2 systems and congestion can also affect comparisons.
An IMF Working Paper update published in 2025 gives illustrative layer-1 averages based on year-to-date data through July 2025: circa 5 transactions per second for Bitcoin and circa 15 for Ethereum. It gives illustrative average fee ranges of $1–$2.5 for Bitcoin and $0.3–$6 for Ethereum. These are historical, dynamic figures—not current quotes or guaranteed costs. The IMF cautions that the networks have different use cases, the measures are not directly comparable, and congestion can raise fees. See the IMF Working Paper WP/25/186.
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What risks should you compare?
Market risk
Both assets can fluctuate sharply. The SEC’s Office of Investor Education and Advocacy said in a September 9, 2024 investor bulletin that bitcoin and ether are “highly speculative investments.” Technical design, supply policy, and past performance do not establish future returns, a reliable hedge, or suitability for your finances.
Application and network risk
With Bitcoin, the core use is value transfer. With Ethereum, programmable applications can create additional software and execution risks: using an application is not the same as simply holding ETH. Proof of work and proof of stake describe consensus mechanisms but do not, alone, settle the broader question of network safety.
Investment-product risk
Directly holding BTC or ETH is different from buying an exchange-traded product (ETP) that provides exposure. The SEC’s September 2024 bulletin notes that spot ETP share prices may diverge from the underlying asset, sponsor fees can reduce the crypto represented by a share over time, and the underlying crypto trading platforms may lack oversight and present heightened fraud or manipulation risks. These are product-route considerations; they should not be treated as identical risks of direct token ownership. The bulletin is SEC staff guidance, not a Commission rule. Read the SEC’s spot Bitcoin and Ether ETP investor bulletin.
Custody risk
Crypto wallets manage access keys; they do not store the assets themselves. The SEC’s Office of Investor Education and Assistance explains in its December 12, 2025 bulletin that a private key authorizes transactions and losing it can mean permanently losing access. A seed phrase may restore a wallet, so protecting it is essential. The bulletin is educational staff guidance, not a Commission rule.
- Self-custody: You control the keys and are responsible for securing them and arranging recovery. Losing a key or recovery phrase may mean losing access.
- Third-party custody: A provider controls access, so you depend on its security and continued operation. A provider could fail, be hacked, or go bankrupt.
- Hot wallet: Connected to the internet and convenient for transactions, but exposed to cyberthreats.
- Cold wallet: Typically a physical device and generally less exposed to cyberthreats, but it can be lost, damaged, or stolen. A device does not remove the need to protect the recovery phrase.
When comparing custody options, check which assets are supported, how recovery works, what safeguards and insurance terms apply, whether the provider lends or commingles assets, and what privacy, account, and transfer fees apply. The SEC’s crypto-asset custody investor bulletin describes these custody considerations.
Quick Recap
How should you decide which one fits your purpose?
- Start with the use. If your interest is peer-to-peer value transfer, Bitcoin’s design is more directly aligned. If you want to interact with programmable applications and assets, Ethereum’s capabilities are more directly relevant.
- Separate use from investment. Decide whether you want to use a network, hold its native asset, or obtain exposure through an investment product. Each choice can carry different risks.
- Consider how much loss you can tolerate. Both bitcoin and ether are speculative and volatile; neither network’s design establishes an appropriate allocation for you.
- Choose a custody approach deliberately. Decide who controls the keys, how access can be recovered, and what could happen if a device or provider becomes unavailable.
- For ETPs, read the product terms. Consider fees, tracking, and the structure’s custody and trading risks rather than assuming an ETP is equivalent to holding the token directly.
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