Definition ∞ A type of Layer 2 scaling solution that processes transactions off-chain but assumes their validity by default. Transactions are bundled and submitted to the main blockchain, with a challenge period during which fraud proofs can be submitted if any transaction is found to be invalid. This optimistic assumption allows for high throughput while retaining a strong security posture anchored to the main chain.
Context ∞ Optimistic rollups are a prominent technology in the ongoing effort to enhance blockchain scalability, particularly for networks like Ethereum. News regarding the deployment and adoption of optimistic rollup solutions frequently signals progress in making decentralized applications more accessible and cost-effective. Their effectiveness hinges on the incentive mechanisms designed to detect and penalize fraudulent activity.
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