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Defeating front-runners with Submarine Sends by Lorenz Breidenbach & Tyler Kell (Devcon4)

384 views · Published 11 December 2018 · 6:09 · Indexed 27 October 2026

Channel: Ethereum Foundation · 2018 · Science & Technology

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Front-running is a fundamental problem in blockchain-based markets in which miners reorder, censor, and/or insert their own (or the highest gas bidder's) transactions to directly profit from markets running on blockchain economic mechanisms. Submarine Sends (first introduced here: http://hackingdistributed.com/2017/08/28/submarine-sends/) are a powerful general-purpose mechanism to prevent front-running on Ethereum by hiding the very existence of a transaction until it is no longer front-runnable. Unfortunately, so far no practical (in terms of gas) Submarine Send constructions were known.
In this talk, I will introduce: a freshly discovered, practical Submarine Send construction that works on the Ethereum  mainnet today.LibSubmarine, an open source project implementing it.

Speaker(s): Lorenz Breidenbach, Tyler Kell
Skill level: Intermediate
Track: Security
Keywords: front-running, miners, mining, open-source

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