Optimistic Rollups: Arbitrum & Optimism (complete Guide)
Ethereum scaling, optimistic rollups, bridges, and fraud proof guide Optimistic Rollups: Arbitrum and Optimism Optimistic rollups scale Ethereum by executing transactions off-chain, posting rollup data back to Ethereum, and relying on fraud proofs to keep invalid state transitions out of final settlement. They are EVM-friendly, cheaper than Ethereum L1 for most activity, and widely used
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