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DOI: 10.4230/LIPIcs.AFT.2023.30
Time Is Money: Strategic Timing Games in Proof-Of-Stake Protocols

Authors: Caspar Schwarz-Schilling, Fahad Saleh, Thomas Thiery, Jennifer Pan, Nihar Shah, and Barnabé Monnot

Published in: LIPIcs, Volume 282, 5th Conference on Advances in Financial Technologies (AFT 2023)

Abstract
We propose a model suggesting that rational consensus participants may play timing games, and strategically delay their block proposal to optimize MEV capture, while still ensuring the proposal’s inclusion in the canonical chain. In this context, ensuring economic fairness among consensus participants is critical to preserving decentralization. We contend that a model grounded in rational consensus participation provides a more accurate portrayal of behavior in economically incentivized systems such as blockchain protocols. We empirically investigate timing games on the Ethereum network and demonstrate that while timing games are worth playing, they are not currently being exploited by consensus participants. By quantifying the marginal value of time, we uncover strong evidence pointing towards their future potential, despite the limited exploitation of MEV capture observed at present.
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Caspar Schwarz-Schilling, Fahad Saleh, Thomas Thiery, Jennifer Pan, Nihar Shah, and Barnabé Monnot. Time Is Money: Strategic Timing Games in Proof-Of-Stake Protocols. In 5th Conference on Advances in Financial Technologies (AFT 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 282, pp. 30:1-30:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{schwarzschilling_et_al:LIPIcs.AFT.2023.30,
  author =	{Schwarz-Schilling, Caspar and Saleh, Fahad and Thiery, Thomas and Pan, Jennifer and Shah, Nihar and Monnot, Barnab\'{e}},
  title =	{{Time Is Money: Strategic Timing Games in Proof-Of-Stake Protocols}},
  booktitle =	{5th Conference on Advances in Financial Technologies (AFT 2023)},
  pages =	{30:1--30:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-303-4},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{282},
  editor =	{Bonneau, Joseph and Weinberg, S. Matthew},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.AFT.2023.30},
  URN =		{urn:nbn:de:0030-drops-192193},
  doi =		{10.4230/LIPIcs.AFT.2023.30},
  annote =	{Keywords: blockchain, proof-of-stake, game theory, maximal extractable value}
}
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