optimism

Blockchains

Ethereum Layer 2 Solutions Explained (2026): Arbitrum, Optimism, Base, zkSync

Ethereum mainnet is expensive. During peak activity, a simple token swap can cost $20–$50 in gas fees, and…

MetaMask

How to Add Optimism (OP) to MetaMask (2026)

What Is Optimism? Optimism is an Ethereum Layer 2 network that uses Optimistic Rollup technology — it batches…