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Optimistic Verification

Definition

Optimistic Verification is a method of validating transactions in certain blockchain scaling solutions, notably optimistic rollups. This approach presumes that all submitted transactions are valid by default, without immediate cryptographic proof. A challenge period follows, during which any network participant can submit a fraud proof if they detect an invalid transaction. If a fraud proof is successful, the invalid transaction is reverted, and the challenger may be rewarded. This mechanism enhances throughput by reducing immediate computational overhead.