# The Rollup Coaster #27

By [Taiko Labs](https://paragraph.com/@taiko-labs) · 2024-07-23

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**The Rollup Coaster** is a bi-weekly newsletter that dives into the fascinating world of Ethereum, exploring the latest in rollups, zero-knowledge proofs, based sequencing/preconfirmations, MEV/PBS/SUAVE, and much more.

This edition is written by Taiko’s Community Advocate [Jüng](https://x.com/Junger0x)[er](https://twitter.com/Junger0x).

Hold on tight! 🎢

_Disclaimer: This newsletter is neither financial advice, nor is indicative of Taiko’s position on any of the material presented. Please do your own research._

* * *

**Highlights 🎢**
-----------------

*   We left EthCC behind last week. There were tons of different events on tons of different topics. The topics currently discussed in the ecosystem were preconfirmations, based rollups, execution auctions and ePBS.
    

[![User Avatar](https://storage.googleapis.com/papyrus_images/4f66aa9550b5cc44d7ef81da951cedb4bf61810257f4f9e77655e99b51276e29.jpg)](https://twitter.com/0xRainandCoffee)

[rain & coffee](https://twitter.com/0xRainandCoffee)

[@0xRainandCoffee](https://twitter.com/0xRainandCoffee)

[![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/0xRainandCoffee/status/1813568739310465361)

EthCC? You mean ePBS, APS, EA, ET, based rollups and preconf summit 2024?

 [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 29](https://twitter.com/0xRainandCoffee/status/1813568739310465361)[

8:37 AM • Jul 17, 2024

](https://twitter.com/0xRainandCoffee/status/1813568739310465361)

*   Based preconfirmations have been a popular topic lately. Without changing the Ethereum protocol itself, it allow users to make transactions fast without being limited to a 12-second block time on based rollups. Based preconfirmations are now [live](https://x.com/drakefjustin/status/1812013179678990743) on Helder testnet.
    

[![User Avatar](https://storage.googleapis.com/papyrus_images/1450e1b2eb33d59d7ca24c3277ec6e3185e61c1e06a3e4655e99ec7c11d095b5.jpg)](https://twitter.com/drakefjustin)

[Justin Drake](https://twitter.com/drakefjustin)

[@drakefjustin](https://twitter.com/drakefjustin)

[![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/drakefjustin/status/1812013179678990743)

based preconfs, live on testnet Helder ![🕶️](https://abs-0.twimg.com/emoji/v2/72x72/1f576.png)  
  
→ execution preconfs on based rollups [@puffer\_finance](https://twitter.com/puffer_finance), [@taikoxyz](https://twitter.com/taikoxyz)  
→ execution preconfs R&D by [@LimeChainHQ](https://twitter.com/LimeChainHQ), [@lu\_ban\_](https://twitter.com/lu_ban_), Switchboard from [@NethermindEth](https://twitter.com/NethermindEth), [@primev\_xyz](https://twitter.com/primev_xyz)  
→ L1 inclusion preconfs by Bolt from @chainbound  
→ staking operators

![](https://pbs.twimg.com/ext_tw_video_thumb/1812009709458558976/pu/img/zBUfT4iDi7yQOZ4L.jpg)

 [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 291](https://twitter.com/drakefjustin/status/1812013179678990743)[

1:36 AM • Jul 13, 2024

](https://twitter.com/drakefjustin/status/1812013179678990743)

*   Starkware’s Stwo prover now can [prove](https://x.com/StarkWareLtd/status/1807776563188162562) 620,000 hashes in a second with Circle STARKs. They measured throughput for proving invocations of the Poseidon2 hash over M31 field on a MacPro M3.
    

**ZK and rollup research 🧙**
-----------------------------

*   First ZK proof has been [verified](https://x.com/StarkWareLtd/status/1813929304209723700) on Bitcoin with Stwo prover by Starkware.
    
*   Cysic team [shared](https://x.com/cysic_xyz/status/1813906615952892196) a paper called “Jolt-b”. The initial Jolt versions had limitations due to their use of Spartan and Hyrax systems, which required complex elliptic curve operations and were impractical for recursive verification. Jolt-b addresses these issues by adopting the Basefold commitment scheme and modifying the Plonky2 protocol.
    
*   Nexus Labs [announced](https://x.com/NexusLabsHQ/status/1813291585213530200) Nexus 2.0 zkVM. This version uses Jolt's arithmetization developed by a16z for the prover frontend. In addition, Hypernova (Nova+Sumcheck+CCS) is used for prover backend.
    
*   Gevulot [announced](https://x.com/gevulot_network/status/1813509434099855491) ZkBoost: Proof Supply Chain Abstraction. The purpose of ZkBoost is to connect all proof networks such as proof marketplaces, prover networks and proof aggregators.
    
*   Polygon [announced](https://x.com/0xPolygon/status/1813213489604751846) new proving system Plonky3.
    
*   [Chainsafe](https://x.com/ChainSafeth) [shared](https://x.com/timoethey/status/1813563811183603982) a research on GKR, an interactive proof protocol for arithmetic circuit evaluation.
    
*   Warlock [open-sourced](https://x.com/warlock_xyz/status/1813680134538359088) new linear algebra library in Rust.
    

**ZK and rollup updates 🗞️**
-----------------------------

*   Succinct and Nebra [announced](https://x.com/SuccinctLabs/status/1814074414289580323) their partnership.
    
*   Jolt roadmap [update](https://x.com/samrags_/status/1813954274629689628).
    
*   STRK staking [coming](https://x.com/Starknet/status/1811079269470327254) to Starknet.
    
*   Cairo v2.7.0 is [coming](https://x.com/CairoLang/status/1813891477958988089).
    
*   CryptoHack(zk learning platform) [added](https://x.com/CryptoHack__/status/1811427486913171618) new challenges to the platform.
    
*   World Chain [announced](https://x.com/worldcoin/status/1810666011990851590) developer preview.
    
*   Reth 1.0.1 is [out](https://x.com/ashekhirin/status/1810694787403542796).
    
*   Scroll’s mainnet weekly [updates](https://x.com/Scroll_ZKP/status/1809380437913153714).
    

**Based sequencing and preconfirmations** [**😎**](https://emojipedia.org/smiling-face-with-sunglasses)
-------------------------------------------------------------------------------------------------------

*   Based Preconfirmations with Multi-round MEV-Boost. [This research](https://x.com/linoscope/status/1813832928155324747) propose _multi-round MEV-Boost_, a modification of MEV-Boost that enables based preconfirmations by running multiple rounds of MEV-Boost auctions within a single slot.
    
*   [Preconfirmations under the NO lens](https://x.com/ethresearchbot/status/1809166760613982235).
    
*   [![User Avatar](https://storage.googleapis.com/papyrus_images/9eff0263908ed53d6d96ce99dd1982c5713c10e557486840601e2dfff634f3e5.png)](https://twitter.com/ethresearchbot)
    
    [ethresearchbot](https://twitter.com/ethresearchbot)
    
    [@ethresearchbot](https://twitter.com/ethresearchbot)
    
    [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/ethresearchbot/status/1808970560342200336)
    
    Leaderless and Leader-Based Preconfirmations  
      
    By:  
    \- chrmatt  
    \- murat  
      
    ![🔗](https://abs-0.twimg.com/emoji/v2/72x72/1f517.png) [ethresear.ch/t/19971](https://t.co/ET66Ux4NGg)  
      
    Highlights:  
    \- Leader-based preconfirmations offer almost a 100% guarantee with a single preconfirmation, simplifying protocol interactions.  
    \-Leaderless preconfirmations create a[
    
    ![](https://storage.googleapis.com/papyrus_images/41837d3dfc702eecdef9674f43ae644cc6df0e02f61f13af3e0f40f5e5160651.png)
    
    ethresear.ch
    
    Leaderless and Leader-Based Preconfirmations
    --------------------------------------------
    
    Joint work with @murat. Thanks to @The-CTra1n and @bemagri for reviewing and providing valuable feedback. Introduction A preconfirmation (preconf) for the context of this article refers to a promise...
    
    
    
    
    
    ](https://t.co/ET66Ux4NGg)
    
     [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 39](https://twitter.com/ethresearchbot/status/1808970560342200336)[
    
    4:06 PM • Jul 4, 2024
    
    ](https://twitter.com/ethresearchbot/status/1808970560342200336)
    

**TEE(Trusted Execution Environments) 🫣**
------------------------------------------

*   teeVM has [arrived](https://x.com/ProofcastLabs/status/1808574619135193114). Proofcast Labs announced their new RISC-V compatible teeVM. Similar to general zkVM, it’s allow to generate proofs of any Rust/Go/C/C++ code.
    
*   “[Intel TDX Security and Side Channels](https://collective.flashbots.net/t/intel-tdx-security-and-side-channels/3648)” research posted in Flashbots forum. The research explains TDX spesific security vulnerabilities.
    
*   [![User Avatar](https://storage.googleapis.com/papyrus_images/7344f50d0e05baf4dce0a926219a75965e0b0eb58e4fe46e7b1e23560f9b8904.jpg)](https://twitter.com/Poetic_Tech)
    
    [Poetic Technologies](https://twitter.com/Poetic_Tech)
    
    [@Poetic\_Tech](https://twitter.com/Poetic_Tech)
    
    [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/Poetic_Tech/status/1810280669240533303)
    
    We are excited to present Autonomous TEE Manifesto as Poetic Technologies.  
      
    [poeticte.ch/posts/autonomo…](https://t.co/8DyBGjHd1N)  
      
    Here is our vision of an open-source software and hardware architecture for confidential computation, particularly TEEs.  
      
    Special thanks to [@cwgoes](https://twitter.com/cwgoes), [@buchmanster](https://twitter.com/buchmanster), [@sbellem](https://twitter.com/sbellem),
    
    ![](https://storage.googleapis.com/papyrus_images/3a88ffbdc18c14833fd2aa064a6bc7cc793d23a8ac2a32fc332dc15e0d7b6562.jpg)
    
     [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 121](https://twitter.com/Poetic_Tech/status/1810280669240533303)[
    
    6:51 AM • Jul 8, 2024
    
    ](https://twitter.com/Poetic_Tech/status/1810280669240533303)
    
*   Spare Labs [announced](https://x.com/Spire_Labs/status/1811965284624007275) the PoC of a framework for creating app-spesific based rollups.
    

**MEV/PBS🔍**
-------------

*   Primev [announced](https://x.com/primev_xyz/status/1813264680724668905) preconfirmations on mev-commit.
    
*   [Searcher Competition in Block Building](https://arxiv.org/pdf/2407.07474) by [Mamageishvili](https://x.com/kakia1989) et. al. In this paper, they proposed a new architecture that allows more value to be captured by block building components.
    
*   Flashbots [opensourced](https://x.com/SheaKetsdever/status/1808509432570986787) Rbuilder, an Ethereum block builder written in pure Rust.
    
*   [![User Avatar](https://storage.googleapis.com/papyrus_images/cbf9f3fab7be421ce3485ac40d42869e2f3ee6a73997e45bd181335ebd768782.jpg)](https://twitter.com/terencechain)
    
    [terence](https://twitter.com/terencechain)
    
    [@terencechain](https://twitter.com/terencechain)
    
    [![Twitter Logo](https://paragraph.com/editor/twitter/logo.png)](https://twitter.com/terencechain/status/1808148747165356526)
    
    New post on fork choice attacks in epbs: [ethresear.ch/t/fork-choice-…](https://t.co/Qtok6DqwWk).  
      
    I covered existing write-ups on epbs post-anti, ex-anti, and new builder reorg and withholding attacks, including the new boost values and why some attacks are more useful than others. Feedback welcome.[
    
    ![](https://storage.googleapis.com/papyrus_images/48c13ebecfa7cb81b240f1ac717dc489ffe339a64adfed8512b91590c2181ef3.png)
    
    ethresear.ch
    
    Fork Choice Attacks and Protections in EPBS
    -------------------------------------------
    
    Introduction This post explores fork choice attacks through the perspective of ePBS, focusing on the new fork choice boost parameters and the rationale behind their design. We’ll begin by examining...
    
    
    
    
    
    ](https://t.co/Qtok6DqwWk)
    
     [![Like Icon](https://paragraph.com/editor/twitter/heart.png) 53](https://twitter.com/terencechain/status/1808148747165356526)[
    
    9:40 AM • Jul 2, 2024
    
    ](https://twitter.com/terencechain/status/1808148747165356526)
    
*   [ePBS notes #4](https://x.com/terencechain/status/1809293620434104783) by Terence.
    
*   [Sealed Execution Auctions](https://x.com/ethresearchbot/status/1812171581004664837).
    

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*Originally published on [Taiko Labs](https://paragraph.com/@taiko-labs/the-rollup-coaster-27)*
