Definition ∞ ‘Optimistic’ in the context of blockchain technology typically refers to a type of verifiable computation system. In optimistic rollups, transactions are assumed to be valid by default and are only computationally verified if a dispute arises. This approach prioritizes throughput by deferring intensive verification processes. It offers a trade-off between speed and the immediate certainty of transaction validity.
Context ∞ The current context for optimistic systems involves their increasing adoption as scaling solutions for prominent blockchains, particularly Ethereum. Discussions often focus on the security assumptions underlying these systems, the duration of dispute periods, and their compatibility with existing smart contract ecosystems. The performance and reliability of optimistic rollups are critical factors for the future scalability of decentralized applications.
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