Proposer–Builder Separation (PBS) Foundation, a non-profit ensuring a healthy PBS ecosystem for Ethereum with stable infrastructure and fair MEV markets.
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PBSF 2025 Update
We are happy to announce our commitment to jointly enable a healthy PBS & MEV ecosystem as an essential part of Ethereum's orderflow pipeline.
Key focus: [1] infrastructure support, [2] education & research, [3] ecosystem alignment
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If you propose blocks ePBS changes how externally built blocks are sourced.
You pick a builder's bid directly and then that builder decides later in the slot, whether to actually deliver the payload.
We built epbs.space so you can see what's actually going on.
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This is Gloas devnet data. The specification is still evolving and the builders are testinstances, so the current tables should not be treated as a mainnet reputation ranking.
The purpose is to make ePBS measurable while it is still being tested.
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all important links:
epbs.space
docs: epbs.space/docs
specs: github.com/ethereum/consensu…
eip: eips.ethereum.org/EIPS/eip-7…
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PBS Foundation retweeted
now live with @BharathVedarth1 on ePBS and the builder-api advancement of the Ethereum protocol
Protocol Day @JoinFutura nitter.net/i/broadcasts/1oKMvvBRj…
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PBS Foundation retweeted
now live w/ George from @titanbuilderxyz / @gattacahq w/ their perspective on changes in the builder-api / ethereum protocol as the biggest block builder nowadays 🧱⚡️
Protocol Day @JoinFutura nitter.net/i/broadcasts/1oKMvvBRj…
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Be @Bitwise: support @ethereum open-source development tirelessly through bear and bull.
Honored to be recipients alongside @ProtocolGuild, supporting critical PBS infrastructure and research for a more decentralized future with this second annual donation! 🙏
Today, Bitwise is donating $100,000 to support Ethereum open-source developers, who work tirelessly to secure and maintain the network.
When the Bitwise Ethereum ETF $ETHW launched in July 2024, we committed to giving 10% of ETHW’s gross profits back to the Ethereum ecosystem each year. Today, we’re excited to be making our second annual donation.
The funds will go to two non-profit initiatives—@ProtocolGuild and @PBS_Foundation—with critical missions: supporting Ethereum protocol research and development, and helping develop and maintain open-source Ethereum infrastructure.
To the investors who’ve chosen Bitwise and ETHW, thank you. We hope you’re as proud as we are to give back to the developers who make Ethereum better every day. We look forward to making more contributions as ETHW continues to grow.
We believe Ethereum is changing the world, and we will always strive to do our part to be a good steward of this incredible ecosystem alongside you.
From all of us at Bitwise, thank you.
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Ever wondered who the best searcher doing JIT liquidity on Ethereum is?
In this research, @0xseiryu and @0xAlphaist
(@NyxFoundation) map JIT activity on Uniswap v3 and identify the dominant searchers behind it.
1/ “Who is the top JIT liquidity searcher in Ethereum?” → a question answer by our paper w/ @0xAlphaist (accepted to a FC workshop: fc26.ifca.ai/defi/)
We mapped JIT activity in Uniswap v3 and linked searchers <-> builders from Jan 2024 to Sept 2025.
One name dominates: jared accounts for >50% of all observed public JIT execution.
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New research into private order flow and MEV extraction just dropped by @0xseiryu 💥
→ key insight: even “protected” TXs sent through private RPCs get sandwiching by few concentrated actors 🤯
more research pieces coming soon, stay tuned! 🚨
1/ Private tx ≠ safe tx (research paper on arvix)
Despite using private mempools thousands of private txs are getting sandwich attacked by concentrated attackers (~40% of sandwiched users switch to private RPCs within 60 days).
🧵 Details below ↓
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Fusaka is going live today! 🚀
final reminder to upgrade to mev-boost v1.10.1 🚨
github.com/flashbots/mev-boo…
notable updates in this release:
- allow background relay requests in v2 API
- fix race condition in fallback for GetPayloadV2 to V1
- increase relay readability in logs
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mev-boost v1.10 full release is out 🚀
github.com/flashbots/mev-boo…
‼️ required update for Fusaka ‼️
key features: Fusaka changes, new GetPayloadV2 API, Prometheus Metrics, X-Timeout-Ms header
big thanks to @BharathVedarth1 & @721Orbit for their work! 🙏
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PBS Foundation retweeted
🎊 Grant Announcement: @PBS_Foundation!
Continued stewardship of the MEV ecosystem, including coordination across the MEV ecosystem for current and future hard forks, along with R&D for mev-boost and mev-boost-relay that supports hard fork development.
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