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What Is Optimism?
Learn how Optimism works as an Ethereum Layer 2 network and what users should know about gas, bridging, and wallets.
Network map
What this means
Optimism is an Ethereum Layer 2 network that supports EVM-style applications with lower fees and separate network state.
Core ideas
What to understand first
- Optimism is EVM-compatible.
- ETH is commonly used for gas on Optimism.
- Optimism assets are separate from Ethereum mainnet assets.
- Users should check bridge direction and network selection carefully.
User checklist
What to check before moving assets
- Switch your wallet to Optimism before using Optimism apps.
- Use a trusted Optimism explorer.
- Keep ETH for gas on Optimism.
- Verify token contract addresses on Optimism specifically.
Risk note
Common mistakes to avoid
- Bridge delays and wrong-chain confusion are common.
- Fake claim pages may target Optimism users.
- Token addresses vary across chains.