Optimist who is always learning.
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Joined November 2017
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Robert Miller retweeted
- OSS is a better framing for multi-agent architectures than the org chart of a large C-corp
- someone should try this approach to building an ethereum client
Happy to share KernelFactory!
A harness I built to solve the performance takehome test shared by @AnthropicAI a few weeks back
bertcmiller.com/kernel_facto…
Robert Miller retweeted
We've mostly figured out "blockchains as databases"
"Blockchains as execution engines" for efficient real-time coordination (i.e. block building) is much less well understood.
This is a big picture update from us on how we are thinking about the problem and the related tech we've been cooking
Robert Miller retweeted
Block building isn't a wart on modern blockchains - it's their engine.
Three years ago, we first announced we are working on SUAVE, a decentralized block building network for all chains.
Today, it's time for an update on progress and what's next.
writings.flashbots.net/decen…
Robert Miller retweeted
Now that ZKEVMs are at alpha stage (production-quality performance, remaining work is safety) and PeerDAS is live on mainnet, it's time to talk more about what this combination means for Ethereum.
These are not minor improvements; they are shifting Ethereum into being a fundamentally new and more powerful kind of decentralized network.
To see why, let's look at the two major types of p2p network so far:
BitTorrent (2000): huge total bandwidth, highly decentralized, no consensus
Bitcoin (2009): highly decentralized, consensus, but low bandwidth - because it’s not “distributed” in the sense of work being split up, it’s *replicated*
Now, Ethereum with PeerDAS (2025) and ZK-EVMs (expect small portions of the network using it in 2026), we get: decentralized, consensus and high bandwidth
The trilemma has been solved - not on paper, but with live running code, of which one half (data availability sampling) is *on mainnet today*, and the other half (ZK-EVMs) is *production-quality on performance today* - safety is what remains.
This was a 10-year journey (see the first commit of my original post on DAS here: github.com/ethereum/research… , and ZK-EVM attempts started in ~2020), but it's finally here.
Over the next ~4 years, expect to see the full extent of this vision roll out:
* In 2026, large non-ZKEVM-dependent gas limit increases due to BALs and ePBS, and we'll see the first opportunities to run a ZKEVM node
* In 2026-28, gas repricings, changes to state structure, exec payload going into blobs, and other adjustments to make higher gas limits safe
* In 2027-30, large further gas limit increases, as ZKEVM becomes the primary way to validate blocks on the network
A third piece of this is distributed block building.
A long-term ideal holy grail is to get to a future where the full block is *never* constituted in one single place. This will not be necessary for a long time, but IMO it is worth striving for us at least have the capability to do that.
Even before that point, we want the meaningful authority in block building to be as distributed as possible. This can be done either in-protocol (eg. maybe we figure out how to expand FOCIL to make it a primary channel for txs), or out-of-protocol with distributed builder marketplaces. This reduces risk of centralized interference with real-time transaction inclusion, AND it creates a better environment for geographical fairness.
Onward.
Robert Miller retweeted
At @chainbound_ , we collaborated with Flashbots on a new implementation of BuilderNet overflow proxy (FlowProxy) created with the goal of reducing e2e latency and increasing observability. It's now open source and live on all instances since October 17th!
Robert Miller retweeted
post here : collective.flashbots.net/t/a…
tl;dr:
* Modern TEEs are not physically secure and this attacks serves as a reminder.
* The attacks do not require an update to our systems or plans. All our current systems have checks to make sure infra is running in vetted clouds. Azure, GCP etc. are part of the trust model
* We have been aware of this limitation for a while so we are doing a bunch of work to get to a permissionless system through a system of slowly relaxing the trust model
* In the short run, we are working on ways to allow nodes in the cloud to prove that they are in the cloud - this makes it easier to be permissionless within the cloud
* There are a bunch of different folks working on dealing with physical (and supply chain) attacks. This includes the Trustless TEE Initiative which was born in FB and is working towards open source silicon that is secure against attacks like these (and many more).
* Outside of Trustless TEE, there are a bunch of people working on physically secure hardware. There are a lot smarter robots and AI models going out into the world and people need to secure them (and the data they hold/process).
* Vitalik also recently announced Vensa which is working on open source and secure silicon
Still bullish TEEs. There isn't and won't be a complete replacement for many years if ever, and we are very excited about the work we and the rest of the community are doing and bullish TEEs.
Robert Miller retweeted
TLDR
- TEEs broken again in a lab.
- Doesn't affect BuilderNet or other Flashbots products, as we don't allow operators to run outside of vetted cloud environments. No user funds or data ever at risk.
- Attack is nontheless very relevant for moving beyond the cloud model, our work on TTEEs and more, and we strongly welcome all security research done in this domain.
Read the full post by @0xQuintus
collective.flashbots.net/t/w…
Robert Miller retweeted
The main challenge with bringing Prop AMMs to EVM is that there's no cheap way for market makers to land price updates at the Top of Block, opening them up to frontrunning.
During this month's demo day, I share a potential solution on how we can enable Prop AMMs on EVM. ⚡
Robert Miller 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.
Robert Miller retweeted
Given all the attention TEEs have received over the last few days, I wrote a piece about a systematic mistake we're making
A big part of the story of crypto is identifying the tools we need and then improving them by orders of magnitude (e.g. ZK and permissionless consensus) 👇
Robert Miller retweeted
We shipped Flashblocks on Base Chain in July, making transactions 10x faster by reducing effective block times from 2 seconds to 200ms
Our engineering team put together a technical deep dive of the work it took
In the spirit of building in public we're sharing more about the Flashblocks architecture on @base, the challenges we encountered, and what we learned shipping sub-second transactions
Read the full blog 🧵
Robert Miller retweeted
As a community we exclaim “don’t trust, verify”, but the reality is every single one of you sends your transactions into a black box where unknown actors can see your data and deploy arbitrary code, all behind a closed door dev process. BuilderNet is different. 🚀
Robert Miller retweeted
📢 @Ronin_Network is coming home to Ethereum, choosing Optimism’s OP Stack to build Ethereum’s gamification engine.
A win for builders and players everywhere.
nitter.cf/Ronin_Network/status/1…
Powering Ronin’s Homecoming to Ethereum with the OP Stack
Welcome to Ronin, @Optimism ⚔️
Last week, the Ronin Governing Validators voted to adopt Optimism’s OP Stack as an L2 provider.
Ronin is coming home to Ethereum, and Optimism is making it possible.
Today, the OP Stack powers a vast network of industry-leading blockchains and protocols with over $20B in total assets.
After this upgrade, these communities will be closer than ever to Ronin: Ethereum’s gamification engine.
Here’s what’s happening 🧵👇
Robert Miller retweeted
The L2 Block Building space is accelerating (again)! Check out our latest L2 demo day w/ Flashbots, @base, @worldnetwork, and @poddotnetwork where we show lower block times, improved tooling, a modular block building library, p2p flashblocks, and a new censorship resistance gadget!