Ethereum is the second-largest cryptocurrency by market capitalization, but its ambitions go well beyond being digital money. Launched in 2015, Ethereum is a decentralized computing platform: a global network of computers that can run code — smart contracts — exactly as programmed, without anyone able to alter it after deployment. That single capability is what makes decentralized finance (DeFi), NFTs, and thousands of other applications possible.
Key Takeaways
- Ethereum’s native asset is Ether (ETH), used both as a currency and to pay for computation (‘gas’) on the network.
- Smart contracts are self-executing code that runs exactly as written — no company or intermediary can change the rules after deployment.
- Ethereum moved from Proof-of-Work to Proof-of-Stake in 2022 (“The Merge”), cutting its energy use by over 99%.
- Most of the DeFi and NFT ecosystem — lending protocols, decentralized exchanges, stablecoins — is built on Ethereum or Ethereum-compatible networks.
- Network congestion can push gas fees up sharply during high demand, which is the main reason Layer-2 networks exist.
Bitcoin vs Ethereum: Core Purpose
| Bitcoin | Ethereum | |
|---|---|---|
| Primary goal | Digital money / store of value | Programmable, decentralized computing platform |
| Smart contracts | Very limited | Core feature |
| Consensus | Proof-of-Work | Proof-of-Stake (since 2022) |
| Typical use cases | Payments, savings, treasury reserve | DeFi, NFTs, dApps, tokens |
Our Take
The easiest way to think about the Bitcoin-vs-Ethereum question is that they were built to solve different problems. Bitcoin optimized for one job — being unforgeable, censorship-resistant digital money — and has deliberately avoided adding complexity that could introduce new attack surfaces. Ethereum optimized for flexibility: it’s a general-purpose settlement layer where anyone can deploy an application, and that flexibility is exactly why almost every major crypto trend since 2017 (ICOs, DeFi summer, NFTs, and now real-world asset tokenization) started on Ethereum first.
That flexibility has a cost, though: more code running on-chain means more surface area for bugs and exploits, and Ethereum’s history includes some expensive smart contract hacks that a simpler network like Bitcoin structurally can’t have. For newcomers, the practical takeaway is that ETH isn’t a ‘faster Bitcoin’ — it’s a different category of asset, closer to owning a share of the infrastructure that a large chunk of the crypto economy actually runs on.
FAQs
Is Ethereum the same as Bitcoin?
No. Both are cryptocurrencies, but Bitcoin was built primarily as digital money, while Ethereum is a programmable platform for running smart contracts and decentralized applications.
What is ETH used for?
ETH is used to pay transaction (‘gas’) fees on the Ethereum network, as collateral in DeFi protocols, and as a widely held store of value in its own right.
Is Ethereum proof-of-work or proof-of-stake?
Ethereum switched from proof-of-work to proof-of-stake in September 2022, an upgrade known as ‘The Merge,’ which reduced its energy consumption by more than 99%.
📎 Source: Coinbase Learn — What is Ethereum?
