Bitcoin vs. Ethereum: a metaphor
- Bitcoin: a spreadsheet that only does accounting — reliable, scarce, single-purpose
- Ethereum: a computer anyone can upload programs to — programmable, flexible, extensible
Vitalik Buterin proposed Ethereum in the 2014 whitepaper, aiming to extend blockchain from "value transfer" to "arbitrary computation."
Three core concepts
1. Smart contract
A piece of code deployed on the blockchain. Once uploaded, no one can stop or modify it — it only executes according to its pre-defined rules.
Example: a contract that says "Alice sends 1 ETH to Bob if and only if Bob submits the preimage of this hash" — the contract verifies and transfers automatically, no third party needed.
2. EVM (Ethereum Virtual Machine)
A "distributed CPU" running on thousands of nodes worldwide. Every smart contract executes on the EVM, and every node must agree on the result.
3. Gas
Executing a contract requires fuel — measured in gas and paid in ETH. A simple transfer ≈ 21,000 gas; complex operations may need 200,000+.
Compared to Bitcoin
| Dimension | Bitcoin | Ethereum |
|---|---|---|
| Launched | 2009 | 2015 |
| Consensus | PoW | PoS (after the 2022 Merge) |
| Primary use | Store of value | Smart contract platform |
| Supply | 21M hard cap | No hard cap, but has burn mechanism |
| Block time | ~10 minutes | ~12 seconds |
| Energy | Very high (mining) | Very low (staking) |
What is "The Merge"?
In September 2022, Ethereum switched from PoW to PoS — that upgrade is called The Merge.
Impact:
- Energy use dropped ~99.95%
- Miners replaced by validators — staking 32 ETH makes you a validator
- Without mining subsidies + partial fee burn, ETH entered a potentially deflationary regime
What Ethereum enabled
| Ecosystem | What you do on Ethereum |
|---|---|
| DeFi | Lending, trading, stablecoins — Aave, Uniswap, MakerDAO, etc. |
| NFTs | Digital ownership — art, gaming, names (ENS) |
| L2 networks | Base, Arbitrum, Optimism — inherit Ethereum security + lower cost |
| DAOs | On-chain autonomous organizations — collective decisions by code |
Ethereum itself doesn't do these things — it provides the foundation. Others build on top.
Important questions
Will ETH have "halvings"?
No. ETH has no fixed issuance schedule — but EIP-1559 (London upgrade) introduced base-fee burning. The busier the network, the more ETH is burned — ETH can theoretically become deflationary.
Is Vitalik the CEO?
No. Vitalik Buterin is a co-founder, but Ethereum has no company and no CEO — coordinated by the Ethereum Foundation for R&D, with upgrades decided by community consensus.
Which is better — ETH or BTC?
Different questions. BTC is a scarce asset; ETH is a productive asset (staking yield, network settlement currency). Most people see them as complementary, not substitutes.
Quiz
Q1. The core difference between Bitcoin and Ethereum is:
A. No difference B. Bitcoin focuses on store of value; Ethereum is a programmable smart contract platform
C. Bitcoin has no mining D. Ethereum is only for payments
Q2. "The Merge" refers to:
A. Bitcoin and Ethereum merging B. Ethereum switching from PoW to PoS
C. Two companies merging D. Miners consolidating
Q3. Gas is:
A. A token B. The "fuel" required to execute smart contracts, paid in ETH
C. Network speed D. Number of nodes
Reference Answers
Q1: B Q2: B Q3: B
Further reading: Ethereum.org — Whitepaper · Wikipedia: Ethereum · Wikipedia: Smart Contract
Educational content only — not investment advice. Crypto asset prices are highly volatile and subject to regulatory and price risk.
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