# Pre-Execution Privacy In PBS **URL:** https://collective.flashbots.net/t/pre-execution-privacy-in-pbs/2035 **Category:** Research **Tags:** pbs, open-problem **Created:** [July 20, 2023, 10:39pm UTC](https://collective.flashbots.net/t/pre-execution-privacy-in-pbs/2035 "2023-07-20T22:39:45Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![ed](https://collective.flashbots.net/letter_avatar_proxy/v4/letter/e/c77e96/32.png) [@ed](https://collective.flashbots.net/u/ed) #### Post date: [September 9, 2023, 6:32pm UTC](https://collective.flashbots.net/t/pre-execution-privacy-in-pbs/2035/2 "2023-09-09T18:32:19Z")
> For example, the proposed design gives the winning builder a headstart in knowing what the next state of the chain will be and an incentive to delay revelation of that state as long as possible. **This constitutes a research direction in itself.** I’ve been thinking about this exact issue in the back of my mind for a while. This isn’t the most pressing problem with ePBS, but it is interesting nonetheless. It is not only a problem with Ethereum’s PTC proposal, but also with ePBS designs for layer 2s and other layer 1s that use different kinds of consensus/sequencing protocols (such as optimistically responsive or DAG protocols). I don’t have definitive answers, but I wrote some preliminary thoughts here: > [@Info Asymmetry (a.k.a the head start problem) with ePBS](https://collective.flashbots.net/t/info-asymmetry-a-k-a-the-head-start-problem-with-epbs/2378): > > From [Pre-Execution Privacy in PBS](https://collective.flashbots.net/t/pre-execution-privacy-in-pbs/2035): For example, the proposed design gives the winning builder a headstart in knowing what the next state of the chain will be and an incentive to delay revelation of that state as long as possible. This constitutes a research direction in itself. I’ve been thinking about this exact issue in the back of my mind for the past several months. It is not only a problem with Ethereum’s [PTC proposal](https://ethresear.ch/t/payload-timeliness-committee-ptc-an-epbs-design/16054), but also with ePBS designs for layer 2s and other layer 1s that use… --- _[View the full topic](https://collective.flashbots.net/t/pre-execution-privacy-in-pbs/2035)._