Michael @mostlyblocks

Head of research @blockspace_eth | @blockspaceforum | fmr. head of research @ChorusOne | block building enthusiast Switzerland Joined September 2022

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Michael @mostlyblocks

20 hours ago

First multi-party block with contributions from 5 builders landed. I expect blocks to hit 5+ contributing builders regularly, very soon. More builders means less subjective discretion and more inclusion lanes. The net result for users is even faster, more predictable inclusion

Blockspace @Blockspace_ETH

21 hours ago

@VitalikButerin calls it a "party", we call it a "participant." Either way, we recently saw MPBC produce a block with 5 participants contributing. We like how this party looks! 🎉🍾🥳

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Michael @mostlyblocks

2 days ago

Highly recommended! Agree that a property of the future Ethereum will be: > "multiple forms of multi-participant block construction[...]" FOCIL and MPBC v1 are the first step towards this. They are complementary. Agree that there will be a strong non-chain layer between users and Ethereum. There are many interests that go into a block to make it valuable. This layer will rest on coordinating these efficiently (remove all friction). Maximum "information" in every block. This is one ambition for MPBC I personally have. Separately, great to see "4-8s slot times" in the post. Now is an opportune time to start building this with Quick Slots.

vitalik.eth @VitalikButerin

4 days ago

The cryptographic world computer: vitalik.eth.limo/general/2026/0… My attempt to express in somewhat concise terms the true meaning of basically everything planned to happen to Ethereum starting from the fork after Hegota. It's really not just a blockchain anymore. It's a hybrid

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Michael @mostlyblocks

3 days ago

Many such reports from searchers landing faster through multi-party blocks. Most transactions added to blocks in MPBC v1 are normal user activity like transfers and trades. But self-contained bundles (e.g. backruns) can also land.

cc_mechanicus @copiumnicus

5 days ago

@mostlyblocks I think some of my txs landed in these, because got included suprisingly fast

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Michael @mostlyblocks

6 days ago

Two out of the three top multi-party blocks by value uplift landed in the last 2 days. Don't expect these to stay on the leaderboard for long. New significant performance improvements are already in testing. These will allow MPBC to support even larger blocks.

Blockspace @Blockspace_ETH

7 days ago

7/ Record Fees 🫰: The block with the highest value uplift to date landed during the last 7 days, adding 220% to the proposer bid! In this block, a total of 0.0532 ETH was added. This value is split between the proposer and the builders and operators who contributed.

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Michael @mostlyblocks

6 days ago

Here's the multi-party block with the highest gas uplift to date. MPBC increased gas usage by 1346%, adding 24.5M gas. It's Slot: 15213880 The highest number of transactions added to date is 810. Assuming users would have waited ~12s for the next slot, it saved them 2.7h. You can find it on the dashboard (Slot: 15180396).

Blockspace @Blockspace_ETH

7 days ago

3/ ⛽️ the Gas Usage: When observing transactions/blobs added per MPBC block, most have similar numbers of transactions added. However, some extreme outliers add far more transactions, with the top 1% of multi-party blocks exceeding 147% of gas added!

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Michael @mostlyblocks

a week ago

All top blocks by gas added are by newer and smaller base builders. This includes 24.5m gas added to one block (+1346%)! MPBC rewards providing faster and more predictable inclusion to users. Blocks from smaller builders typically have comparatively more space available. Check out the MPBC dashboard to view every single MPBC block.

Michael @mostlyblocks

2 months ago

Multi-party block construction could make smaller builders more competitive. Builders earn when they contribute to other's blocks, or when others contribute to their blocks. -> The less flow a builder has, the higher the relative value that can be added to its blocks. -> The

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Michael @mostlyblocks

2 weeks ago

Our more detailed take: x.com/Blockspace_ETH…

Blockspace @Blockspace_ETH

2 weeks ago

We want Ethereum to produce the highest grade blockspace. One requirement is providing end consumers predictable inclusion. Users should know when their transaction will be included in a block and what it will cost. Quick Slots are a significant leap in this direction and

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Michael @mostlyblocks

2 weeks ago

Quick Slots are S-Tier. We contributed to this because the best way to improve Ethereum is to make transactions cheap, fast, and reliable. This depends on block size, slot time, and the block construction pipeline. With Quick Slots, MPBC, and gas limit increases we're taking strides towards a better Ethereum.

Ethlabs @ethlabs_org

2 weeks ago

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Michael @mostlyblocks

2 weeks ago

@Yannimoto @Blockspace_ETH Thanks! Team effort from the @blockspaceforum

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Michael @mostlyblocks

2 weeks ago

@apriori0x @frachtisvc Great fit, congrats to you & the frachtis team.

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Michael @mostlyblocks

2 weeks ago

@0x9212ce55 Always great to bounce thoughts with the Nuconstruct team! Multi-party blocks with TOOL contributions coming soon.

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Michael @mostlyblocks

2 weeks ago

@QuasarBuilder Fantastic to have Quasar as part of the Blockspace Forum and MPBC! Onwards & upwards..

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Michael @mostlyblocks

2 weeks ago

@binji_x Great explainer. Quick slots and MPBC are natural complements. Faster buses, better boarding.

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Michael @mostlyblocks

2 weeks ago

@barnabemonnot MPBC 🤝Quick Slots (S-tier!)

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Michael @mostlyblocks

2 weeks ago

Multi-Party Block Construction (MPBC) is live! Over the past 24h, 3% of Ethereum blocks were multi-party blocks. Since August 28th, >20k transactions have been included faster through MPBC. MPBC means larger & more robust blocks, faster and more predictable inclusion. Highlights to date include blocks that gained 810 additional transactions, or almost 14x the gas. MPBC comes with comprehensive docs and metrics. You can check every multi-party block out on our dashboard. MPBC will continue to improve and scale. Looking forward to taking the next step together with the many teams that make up the Blockspace Forum. Let's make transaction inclusion fast and predictable, and Ethereum the best it can be.

Blockspace Forum @blockspaceforum

2 weeks ago

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Michael @mostlyblocks

3 weeks ago

@malleshpai Best cycling spot in Singapore by far.

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Michael @mostlyblocks

4 weeks ago

Ethereum is for shipping! Excited to: (1) See @Blockspace_ETH in this list. (2) Confirm that we are indeed shipping very fast. Good list, good momentum, let's go...

Ethereum @ethereum

4 weeks ago

Ethereum is for shipping. Here are 35 things the Ethereum ecosystem launched, upgraded, and announced through August. 1/ GnosisDAO approved a vote to transition @gnosischain from its own L1 to a ZK-proven Ethereum L2 rollup with synchronous composability, so apps on Gnosis and

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Michael @mostlyblocks

4 weeks ago

Multi-party block construction will have very clear, visual, and jargon-free docs. Everybody uses the transaction pipeline and it should be possible to get the gist in 5 min.

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Michael @mostlyblocks

a month ago

The best way to improve Ethereum is to make transactions cheap, fast, and reliable. This depends on block size and slot time (throughput), and the block construction pipeline. We're shaping up nicely! Glamsterdam and quick slots will improve throughput. FOCIL and MPBC will improve how blocks are constructed by providing faster and more predictable inclusion for all types of transactions.

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Michael @mostlyblocks

a month ago

ETH will succeed if many institutions and users have vested interest in its success. It's all a market, this is the way to be sustainable, authentic & credible, and I believe @Blockspace_ETH to be a strong step in this direction.