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arXiv · 2510.03697

A Time-Bound Signature Scheme for Blockchains

Benjamin Marsh·Paolo Serafino
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Abstract

We introduce a modified Schnorr signature scheme to allow for time-bound signatures for transaction fee auction bidding and smart contract purposes in a blockchain context, ensuring an honest producer can only validate a signature before a given block height. The immutable blockchain is used as a source of universal time for the signature scheme. We show the use of such a signature scheme leads to lower MEV revenue for builders. We then apply our time-bound signatures to Ethereum's EIP-1559 and show how it can be used to mitigate the effect of MEV on predicted equilibrium strategies.

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Benjamin Marsh, Paolo Serafino. 2025-10-04. A Time-Bound Signature Scheme for Blockchains. https://arxiv.org/abs/2510.03697

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