• Interview question EVM · Solidity timestamp manipulation · Need Practical mitigation tips

    Varun Mehta

    Varun Mehta

    @aUV335h
    Updated: Jul 17, 2025
    Views: 1.1K

    How can I really prevent timestamp manipulation in a Solidity auction during an Interview question EVM scenario?
    I froze in a technical round when the interviewer drilled into how miners might nudge block.timestamp to stretch or shrink an on-chain auction window . Using block.number isn’t bullet-proof because block time isn’t constant , and pulling a Chainlink feed felt like overkill (plus gas) .

    Here’s where I’m stuck — any sharp, production-tested answers?

    • Is a simple commit–reveal scheme enough, or should I add a grace period buffer for bids?

    • Does OpenZeppelin’s TimelockController help here, or is that more governance than auction?

    • Have you balanced gas efficiency with fairness using fallback timing checks or circuit breakers?

    • If you’ve faced this exact Interview question EVM, what response earned you bonus points?

    I’d love concise code snippets, whiteboard-friendly explanations, or even horror stories from mainnet deployments . Anything that turns this gotcha into a confident answer for the next EVM security interview would be amazing 🙌

    Thanks in advance — your insights could save my next Interview question EVM moment!


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