Definition ∞ A Commitment-Reveal Protocol is a cryptographic method where a party first commits to a chosen value without revealing it, then later discloses the value and proves their commitment. This two-phase process ensures that the committed value cannot be altered after the initial commitment. It provides a mechanism for fair decision-making or secure information exchange in decentralized settings.
Context ∞ In cryptocurrency and blockchain systems, Commitment-Reveal Protocols are essential for various applications requiring fairness and preventing front-running, such as decentralized auctions, verifiable random functions, and certain voting mechanisms. A key discussion point involves balancing the security guarantees of these protocols with computational efficiency. Future advancements will focus on optimizing these protocols for speed and resource usage, particularly in high-throughput blockchain environments.
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