Ethereum vs Bitcoin
The two largest blockchains serve fundamentally different purposes. Here is how they compare across every dimension that matters.
Ashir Khan writes about cryptocurrency security, self-custody, macro market analysis, and regulatory policy at CryptoBeacon.
The key distinction
Bitcoin was designed to solve one problem: creating a peer-to-peer electronic cash system without a trusted third party. Ethereum was designed to solve a different problem: enabling arbitrary, trustless computation on a global blockchain. These different design goals result in very different networks, despite sharing some surface-level similarities (both are blockchains, both use cryptography, both are decentralised).
The simplest summary: Bitcoin is digital gold. Ethereum is a programmable computer. Neither description is complete, but they capture the essential difference in purpose.
Head-to-head comparison
| Attribute | Bitcoin | Ethereum |
|---|---|---|
| Primary purpose | Store of value / digital money | Programmable platform for dApps |
| Created | 2009 by Satoshi Nakamoto | 2015 by Vitalik Buterin et al. |
| Consensus | Proof of Work (mining) | Proof of Stake (validators) |
| Supply cap | 21 million BTC (hard cap) | No hard cap; EIP-1559 burn |
| Block time | ~10 minutes | ~12 seconds |
| Smart contracts | Limited scripting only | Full Turing-complete EVM |
| Transaction fees | Paid in BTC (sats) | Gas fees paid in ETH (Gwei) |
| Main use cases | Savings, censorship-resistant payments, collateral | DeFi, NFTs, DAOs, stablecoins, L2 settlement |
| Energy use | High (Proof of Work) | ~99.95% lower (post-Merge, PoS) |
Supply: the critical economic difference
Bitcoin's 21 million coin hard cap is a core part of its value proposition — it makes Bitcoin programmatically scarce in a way no central bank can override. This is why Bitcoin is often compared to gold as a store of value.
Ethereum has no hard cap. However, EIP-1559 (August 2021) changed the fee structure so that a portion of every transaction fee is burned — permanently removed from supply. During periods of high network activity, ETH is net deflationary. During low activity, it is slightly inflationary. Whether this model is superior to a hard cap is an ongoing debate in the ecosystem.
Programmability: where Ethereum leads
Ethereum's EVM allows developers to write smart contracts — self-executing programs that run on the blockchain. This has enabled an enormous ecosystem: DeFi protocols with billions in locked value, NFT marketplaces, stablecoins (USDC, DAI), prediction markets, and more. Almost all major crypto innovations of the past decade have been built on Ethereum or EVM-compatible chains.
Bitcoin's scripting language is intentionally limited. This is a design choice: Bitcoin's developers believe simplicity reduces attack surface and improves security and predictability. The Lightning Network extends Bitcoin's functionality for payments without adding EVM complexity.