Bitcoin vs Ethereum: key differences between BTC and ETH

Bitcoin and Ethereum are the two best-known blockchain networks, but they work differently and serve different purposes. Bitcoin has a fixed supply of 21 million BTC and uses Proof-of-Work to verify transactions. Ethereum uses Proof-of-Stake and supports smart contracts and decentralized applications. Unlike Bitcoin, ETH has no fixed supply cap. 

These differences affect transaction fees, confirmation times, and how each network can be used. Here’s how Bitcoin and Ethereum compare, and what to consider when choosing between them. 

Bitcoin vs Ethereum at a glance

The table below sums up the main differences between Bitcoin and Ethereum. The sections below explain each difference in more detail.

What is Bitcoin?

Bitcoin started on January 3, 2009, when the user under the pseudonym Satoshi Nakamoto mined its first block. Satoshi Nakamoto's identity remains unknown. 

The whitepaper was published in October 2008, with a simple idea behind it: people should be able to send money without asking a bank to approve the transfer. Read more in our guide on what Bitcoin is.

How the Bitcoin network works

The blockchain keeps a record of transactions. Bitcoin's blockchain is public, so anyone can download it and check the transaction history. People who run nodes help maintain the network by checking new blocks against its rules. A node rejects a block that doesn't follow them. No bank needs to approve the transactions, and users don't have to rely on one central authority to keep the record.

Bitcoin network vs BTC

Bitcoin is the blockchain network, which includes the software, the rules, and the nodes that enforce them. BTC is the native cryptocurrency that moves across Bitcoin network. 

What is Ethereum?

Ethereum started on July 30, 2015, following a proposal by Vitalik Buterin in 2013. The idea was to make a blockchain programmable, allowing developers to build applications that execute through smart contracts. 

How the Ethereum network works

Smart contracts are the programs stored on Ethereum that execute when triggered by transactions. Network nodes execute the relevant code as part of processing those transactions.

Ethereum network vs ETH

Ethereum is the network itself, including its blockchain, rules, and applications. ETH is its native coin. People use it to pay transaction fees and participate in staking. Other assets, including stablecoins, can run on Ethereum, but they aren't ETH.

Bitcoin vs Ethereum: the key differences

Same blockchain basics, different priorities. Use cases, consensus, fees, and supply are where the gap shows up most. The following sections compare these features. 

Purpose and use cases

Bitcoin was designed as a peer-to-peer electronic cash system, allowing people to transfer value without relying on banks or other intermediaries. Over time, it has also become a long-term investment asset, with individuals and companies holding BTC as a store of value or part of their reserves.

Ethereum was built with a broader purpose: to support programmable transactions through smart contracts. These are programs that execute automatically when predefined conditions are met, allowing developers to build decentralized applications (dApps) and financial services on the blockchain.

The main use cases reflect this difference:

• Bitcoin: peer-to-peer payments, cross-border transfers, long-term holdings, and corporate treasury reserves.
• Ethereum: decentralized finance (DeFi), stablecoins, NFTs, decentralized autonomous organizations (DAOs), and tokenized real-world assets (RWAs).

In practice, Bitcoin focuses primarily on transferring and storing value, while Ethereum provides infrastructure for applications that go beyond payments. ETH also plays a central role in this ecosystem, as users pay transaction fees in ETH and validators stake it to help secure the network.

Proof of Work vs Proof of Stake

Every blockchain needs a way to verify transactions and agree on which blocks are added to the network. This process is called consensus, and it allows participants to maintain a shared record without relying on a central authority. Bitcoin and Ethereum use different approaches.

Bitcoin: Proof of Work (PoW)

Bitcoin uses Proof of Work (PoW), where miners compete to solve a computational puzzle and earn the right to add the next block. 

A new Bitcoin block is added approximately every 10 minutes. The successful miner currently receives a subsidy of 3.125 BTC, plus the transaction fees included in the block. The subsidy is cut in half every 210,000 blocks, or roughly every four years, through an event known as the Bitcoin halving. This process will continue until nearly all 21 million BTC have been issued, with the final fractions expected to be mined around 2140.

The cost of all that computing power matters. Trying to rewrite the blockchain means spending real money on hardware and electricity, with no guarantee of getting anything back.

Ethereum: Proof of Stake (PoS)

Ethereum uses Proof of Stake instead of mining. Validators secure the network by locking up ETH as collateral and verifying transactions and adding new blocks. 

Solo staking starts at 32 ETH, while staking pools allow participation with smaller amounts. Validators propose and attest to blocks, and receive rewards for their work. 

Unlike Bitcoin miners, Ethereum validators don't need to compete through energy-intensive calculations. Instead, the network uses financial incentives to encourage honest behavior. Validators can face penalties for failing to perform their duties, while serious violations, such as signing conflicting messages, can result in slashing, where part of their staked ETH is taken away.

Ethereum also handles transaction fees differently. The base fee is burned, permanently removing that ETH from circulation, while priority fees (tips) go to the block proposer.

Energy consumption of Bitcoin and Ethereum

Bitcoin's Proof of Work (PoW) relies on mining hardware and electricity to secure the network, while Ethereum's Proof of Stake (PoS) uses staked ETH as collateral. This creates a major difference in energy consumption.

According to the University of Cambridge's 2025 Digital Mining Industry Report, Bitcoin mining consumed an estimated 138 TWh of electricity annually*, equivalent to approximately 0.54% of global electricity use. For perspective, that's more than the annual electricity consumption of countries such as Belgium or the Netherlands.

When Ethereum switched to PoS in 2022, its energy use dropped by approximately 99.95%, according to ethereum.org. A Crypto Carbon Ratings Institute study estimates that Ethereum now consumes around 0.0026 TWh of electricity annually, compared with roughly 70–80 TWh before the transition.

Live electricity consumption comparison figures between Bitcoin and Ethereum can be checked on the Cambridge Centre of Alternative Finance website.

*The Cambridge estimate is based on mining data around June 2024 and was published in April 2025. Its 138 TWh figure is an annualized estimate, not a measured calendar-year total.

Bitcoin vs Ethereum transaction speed

The Bitcoin vs Ethereum transaction speed comparison depends on block production, confirmation requirements, and finality, not only how often each network creates a block.

• Bitcoin adds a block about every 10 minutes. Each new block adds another confirmation to a transaction, making it harder to reverse. Exchanges may require multiple confirmations before crediting a deposit.
• Ethereum creates a slot every 12 seconds, though not every slot contains a block. Transactions can be included quickly, but finality takes longer, typically around 13–15 minutes under normal conditions.

Bitcoin vs Ethereum fees 

Bitcoin fees depend on transaction size in virtual bytes (vB) and the fee rate in satoshis per virtual byte (sat/vB). 

For example, a 200 vB transaction at 20 sat/vB costs 4,000 satoshis (0.00004 BTC). If demand for block space increases and the fee rate rises to 100 sat/vB, the same transaction costs 20,000 satoshis (0.0002 BTC).

Ethereum fees depend on how much gas a transaction uses and the gas price. A simple ETH transfer typically uses 21,000 gas, while a token swap through a DeFi app needs more. The fee is calculated by multiplying the gas used by the total gas price, which includes a base fee that gets burned and a priority fee paid to the validator. 

For example, a transfer using 21,000 gas at 12 gwei costs 0.000252 ETH. The actual fee depends on network demand. See the official Ethereum gas documentation for details.

Smart contracts and programmability

The Ethereum network is able to do more than just record ETH transfers. Its architecture allows it to run programs called smart contracts. They run when certain conditions are met and are executed by the Ethereum Virtual Machine (EVM).

Ethereum tokens use shared standards, so wallets and apps can support them without having to treat each one differently. ERC-20 is for fungible tokens, where each unit is interchangeable with another, as with many stablecoins. ERC-721 is used for NFTs, where each token is distinct.

Bitcoin has scripting, too, but it serves a more limited purpose. It can require multiple keys to approve a transaction or set a time before coins can be spent. It doesn't support the same range of applications as Ethereum, and its main uses remain sending and holding BTC.

Bitcoin vs Ethereum supply and tokenomics

Bitcoin has a hard limit of 21 million BTC. New coins enter circulation as mining rewards, but that reward gets cut in half every 210,000 blocks, or roughly every four years. The latest halving took place in April 2024, reducing the block subsidy to 3.125 BTC.

Ethereum has no fixed supply cap. Validators receive new ETH as rewards, while the network burns the base fee paid in each transaction, a mechanism introduced by EIP-1559 in 2021. The total supply can rise or fall depending on whether issuance exceeds the amount burned. Higher network activity can increase the burn, but it doesn't guarantee that supply will fall. For the current net change, see the Ethereum Data Hub or a live ETH supply dashboard.

Bitcoin vs Ethereum scalability: Lightning Network and Layer 2s

Both networks use additional scaling systems to handle more activity. They go about it differently.

Bitcoin's Lightning Network enables faster, lower-cost payments through off-chain payment channels. Payments can be routed across connected channels without recording every transfer on Bitcoin's main blockchain. Opening and closing channels generally involve on-chain transactions.

Ethereum takes a different approach, using Layer 2 (L2) networks to handle transactions outside the main chain. Most rely on rollups, which process transactions separately and post data back to Ethereum, reducing the amount of work the main network has to do. Arbitrum and Base are two examples. Rollups can run smart contracts, so applications can operate there as well as payments. For more on how networks compare, see our guide to blockchain networks explained.

Advantages and limitations of Bitcoin and Ethereum

Bitcoin's strengths come from simplicity. Rules rarely change, supply is capped, and the network has been running since 2009. Many holders like that predictability. The limits come from the same choices: the base layer handles few transactions, scripting rules out most applications, and PoW needs a lot of energy.

Ethereum's strengths come from flexibility. Developers can build a wide range of decentralized applications. PoS also uses far less energy. That flexibility also brings greater complexity. Smart contracts can have bugs, fees spike when demand is high, and liquidity is spread across many L2 networks. ETH has no fixed supply cap either.

Both assets are volatile, and prices can fall as well as rise. 

Bitcoin or Ethereum: which should you choose?

Choosing between BTC vs ETH depends on what you plan to use the asset for.

• For holding an asset with a fixed supply: Bitcoin has a maximum supply of 21 million BTC and a relatively simple purpose. A limited supply, however, does not guarantee that its price will rise.
• For decentralized applications: Ethereum supports smart contracts, DeFi, stablecoins, and tokenized assets. ETH is used to pay transaction fees and can be staked to help validate the network.
• For payments: Bitcoin supports peer-to-peer payments, while Ethereum allows transfers of ETH and other tokens. Transaction fees and confirmation times depend on network conditions.
• For participating in network validation: Bitcoin requires mining hardware and electricity. Ethereum uses staking, which allows ETH holders to participate directly as validators or through staking services, each with its own requirements.

How to Swap BTC for ETH on SwapSpace

With SwapSpace, you can compare offers from multiple exchange providers and choose the one that suits you. The service is non-custodial, so you exchange BTC for ETH without handing SwapSpace custody of your funds. Here’s how it works:

1. 1. Choose the pair: select BTC to send and ETH to receive.
2. 2. Compare offers: enter the amount and check how much ETH each provider will send you. You can sort offers by rate, ETA, or relevance for convenience.
3. 3. Enter your address: paste your Ethereum wallet address and check the first and last few characters. Crypto transfers can’t be reversed.
4. 4. Send BTC: copy the deposit address provided for the swap, check it, and send your BTC.
5. 5. Wait for the swap: the provider waits for your BTC deposit to receive the required confirmations before processing the exchange. Bitcoin adds blocks roughly every 10 minutes, so this step can take time. The total time also depends on the provider and network conditions.

You can swap BTC for ETH on SwapSpace without registering. Additional verification may be required depending on the provider or jurisdiction. 

💡 Tip: Using a new wallet or provider? Send a small test amount first.

FAQ

What is the main difference between Bitcoin and Ethereum?

Bitcoin focuses mainly on holding and transferring value. Ethereum does that too, but it also supports applications built with smart contracts. The difference affects how each network handles transactions, supply, and scaling.

Is Ethereum better than Bitcoin?

That depends on what you want to use it for. Ethereum supports applications, tokens, and stablecoins, while Bitcoin has a fixed supply cap and a more focused role. Both have risks, and their prices can fluctuate sharply.

Which has lower transaction fees, Bitcoin or Ethereum?

It depends on network demand and the type of transaction. Bitcoin fees depend on transaction size and the fee rate, while Ethereum fees depend on gas used and the gas price. A simple ETH transfer may cost less than a Bitcoin transaction at times, but neither network is consistently cheaper.

Which is faster, Bitcoin or Ethereum?

Ethereum usually includes transactions in a block faster, with slots every 12 seconds, while Bitcoin’s block time is roughly 10 minutes. However, inclusion isn’t the same as finality, and the time you wait also depends on network conditions and the receiving service.

Can I send BTC directly to an Ethereum address?

No. Bitcoin and Ethereum are separate blockchains with different transaction systems. A Bitcoin transaction sends BTC on the Bitcoin network, while an Ethereum address receives assets on the Ethereum network. Sending BTC to an ETH address won’t convert it into ETH. To exchange BTC for ETH, use a service that accepts BTC and sends ETH to your Ethereum address. Always check the network and address before sending, as funds sent incorrectly may be lost.

Can you exchange Bitcoin for Ethereum?

Yes, with a swap rather than a transfer. A provider receives BTC on Bitcoin and sends ETH on Ethereum. Compare a few offers first, since rates and fees vary by provider.

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This material is provided for informational purposes only and does not constitute financial, investment, or legal advice. Cryptocurrency markets are highly volatile. Cryptocurrency trading involves significant risk and can result in the loss of your invested capital. Always conduct your own research before making any financial decisions.