ZK-Roller-Coaster #1

This is the first edition of ZK-Roller-Coaster where we track and investigate the most exciting, meaningful, and crazy ZK-stuff of the prior two weeks.

What to expect? New and ongoing ZK research discussions and proposals, new projects, updates from the already existing and beloved projects, ZK-drama, some educational watchings and writings, opportunities for builders, and puzzles for the curious. Not all of these every time but all of these from time to time.

Let’s start with the first edition of ZK-Roller-Coaster! Hold on tight! 🎢

Spice of the week 🌶️

  • Apparently no one really knows how rollups actually work! Kelvin from Optimism gives a nice presentation on his rollup mental model, and asserts that ZK Rollups don’t exist! The horror! (But neither do optimistic rollups, according to him… they are all just rollups).

ZK and rollups research 🧙

  • ethresearch thread on “based” or “L1-sequenced” rollups (by Justin Drake).
    TLDR: “we highlight a special subset of rollups we call “based” or “L1-sequenced”. The sequencing of such rollups — based sequencing — is maximally simple and inherits L1 liveness and decentralisation. Moreover, based rollups are particularly economically aligned with their base L1.”
    Taiko supports the approach to be as decentralized as possible, fully depending on Ethereum for sequencer/proposer decentralization.

  • ethresearch proposal: Making Designated Verifier Signatures Compatible on Ethereum (by Shrey Jain and Enrico Bottazzi). Short summary in the Enrico’s thread.

  • ethresearch proposal of a new ZK-based Cross-Rollup-Communication Protocol (by Daniel Ivanov from LimeLabs).

  • A community-maintained collection of bugs, vulnerabilities, and exploits in apps using ZK crypto by 0xPARC community.

  • Alex Stokes published the draft of “systemization of knowledge”: what we mean when we talk about “sequencing”? That’s work in progress, feel free to contribute.

ZK and rollups updates 🎈

Non-ZK industry highlights 🎡

  • Recap (by Tim Beiko) and recording of the last Ethereum Execution Layer Meeting (set the Shapella mainnet date (!!), covered every potential Cancun EIP so far, discussed local block building, etc.)

  • Flashbots Transparency Report.

Opportunities 🏄‍♀️

  • Apr 19: a deep dive into Sangria, a new folding scheme for Plonk with relaxed plonk constraints, a discord chat by Nico from Geometry.

Readings and watchings 🎞


Fancy mathematics, cryptography, and quantum physics

Thank you for reading the first edition of ZK-Roller-Coaster. See you in two weeks! 🚵‍♀️

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