Definition ∞ Proof of time is a cryptographic mechanism demonstrating that a specific duration of real-world time has elapsed. This proof relies on verifiable delay functions or similar cryptographic constructions that require a sequential computation, whose completion time can be reliably estimated. It ensures that a certain period has passed before a subsequent action can occur or a block can be validated. This mechanism adds a temporal dimension to cryptographic security.
Context ∞ Proof of time is a concept explored in various blockchain protocols to enhance security, fairness, and resistance to certain types of attacks, appearing in advanced cryptographic research news. It can be used to prevent timestamp manipulation, enforce waiting periods, or improve the decentralization of leader selection in consensus algorithms. Its application contributes to more robust and predictable decentralized systems.
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