# PBS - Key Research & References This document is somewhat outdated and certainly incomplete. See https://collective.flashbots.net/t/pbs-and-alternatives-wiki/2034 for an up-to-date wiki! ## Foundational documents * [Proposer/block builder separation-friendly fee market designs](https://ethresear.ch/t/proposer-block-builder-separation-friendly-fee-market-designs/9725) (Vitalik, 2021) * [Two-slot proposer/builder separation](https://ethresear.ch/t/two-slot-proposer-builder-separation/10980) (Vitalik, 2021) * [MEV-Boost: Merge ready Flashbots Architecture](https://ethresear.ch/t/mev-boost-merge-ready-flashbots-architecture/11177) (thegostep, 2021) * [Notes on Proposer-Builder Separation](https://barnabe.substack.com/p/pbs) (Barnabé, Nov. 2022) ## Looking forward * [How much can we constrain builders without bringing back heavy burdens to proposers?](https://ethresear.ch/t/how-much-can-we-constrain-builders-without-bringing-back-heavy-burdens-to-proposers/13808) (Vitalik, 2022) * [Unbundling PBS: Towards protocol-enforced proposer commitments (PEPC)](https://ethresear.ch/t/unbundling-pbs-towards-protocol-enforced-proposer-commitments-pepc/13879?u=barnabe) (Barnabé, 2022) * many missing, please comment :pray: ## Videos * [Updates on Proposer-Builder Separation](https://www.youtube.com/watch?v=sQQ2UYB3qOI) (Barnabé, Oct. 2022) * [MEV on ETH2: MEV-boost, PBS, Danksharding... How do the pieces fit together?](https://www.youtube.com/watch?v=OD54WfVuDWw&list=PLRHMe0bxkuel3w3C7P_WVvp9ShLi3HKRI&index=28) (Vitalik, April 2022) * [A study of the transaction supply chain from CryptoKitties to MEV-Boost to PBS](https://www.youtube.com/watch?v=jQjBNbEv9Mg&list=PLRHMe0bxkuel3w3C7P_WVvp9ShLi3HKRI&index=17) (Barnabé, April 2022) * [Decentralizing the Builder Role](https://www.youtube.com/watch?v=fAgrIdyWIqc) (Vitalik, Sept. 2022) * [Censorship Résistance & PBS - SBC 2022](https://www.youtube.com/watch?v=XZJcZ05d-Wo) (Justin Drake, 2022) ## See also * [Endgame](https://vitalik.ca/general/2021/12/06/endgame.html) (Vitalik, 2022) * [Builder specs](https://github.com/ethereum/builder-specs) - API spec for interaction between proposer and block builder * [The Hitchhiker's Guide to Ethereum](https://members.delphidigital.io/reports/the-hitchhikers-guide-to-ethereum/) - good technical quick-intro to Ethereum and current PBS setup * [mev.day](https://flashbots.notion.site/flashbots/mev-day-836f88806995412dabc1c7bb7ce4e830) + [MEV-sbc Workshop](https://www.flashbots.net/mev-sbc-workshop) * [mev-boost](https://github.com/flashbots/mev-boost/) (see also [issues taged 'research'](https://github.com/flashbots/mev-boost/issues?q=is%3Aissue+label%3A%22research+%F0%9F%92%A1%22+)) * [More PBS research links & references](https://github.com/flashbots/mev-boost/wiki/Research)
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MEV-Boost connecting to a SGX builder network

early draft & work in progress This doc outlines an idea for mev-boost to connect directly to a network of SGX-based block builders, obviating the need for relays as intermediaries. Such a setup could: remove the need for relays as trusted intermediaries produce higher value blocks for proposers, because builders have more time building them (don't need to submit to a relay up-front) pave the way to enclave-based privacy-preserving orderflow sharing between builders pave the way for PEPC by allowing for arbitrary commitmentsfrom builders to proposers

3/2/2023
MEV-Boost Status Update - 2022-11-17

MEV-Boost Release of mev-boost v1.4.0 with notable feature of setting a minimum bid value Proposal to replace types from go-boost-utils with those from Attestant (WIP PR) Updated bug-bounty amounts Preparations for Capella & EIP-4844 changes Ongoing research on inclusion lists / crLists / partial block auctions / proposer-build pre/suffixes See also the mev-boost status update from 2022-11-03 Relay Ecosystem

11/17/2022
MEV-Boost Status Update - 2022-11-03

Quick summary of what's currently happening in and around MEV-Boost, as of Nov. 3, 2022. Upcoming release of mev-boost v1.4.0 Notably includes the ability to set a minimum bid value, under which mev-boost won't provide a bid to the beacon node. Several minor improvements. More details at https://github.com/flashbots/mev-boost/issues/377 Updated getValidator relay data API

11/3/2022
Transaction Inclusion List for MEV-Boost

Ideas, questions and technical approach to implementing inclusion lists. Note: This document assumes the inclusion list functionality being implemented by both beacon node and mev-boost. It might be worth investigating whether this can be done exclusively in mev-boost, without changes to the BN. References Vitalik’s post about inclusion lists and partial block auctions: ethresear.ch/t/how-much-can-we-constrain-builders-without-bringing-back-heavy-burdens-to-proposers/13808 Robert’s specific proposal: ethresear.ch/t/how-much-can-we-constrain-builders-without-bringing-back-heavy-burdens-to-proposers/13808/12 Inclusion-list discussion on Github: github.com/ethereum/builder-specs/issues/52 Censorship Resistance: crlists in mev-boost (#215)

10/30/2022
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