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# System prepended metadata

title: EPF cohort 4 - Week 6

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EPF Week 6 Update
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**Summary:**
In the context of week 6 within the fellowship cohort me and my colleague undertook a significant task by creating a comprehensive comparison for zk-rollups. While this table is a work in progress, with plans to incorporate additional rollups, our preliminary findings have illuminated a rather concerning trend. It appears that the majority of zk-rollups currently in existence lack the crucial components of decentralized sequencers or provers. This apparent centralization within the zk-rollup landscape poses not only potential drawbacks but also raises alarms regarding its alignment with the core values of decentralization championed by Ethereum.

In response to this pressing concern, we pivoted our focus towards leveraging the extensive resources within the rollup research community. Our primary objective as of now is to curate an all-encompassing repository detailing the diverse prover selection methodologies and the associated incentive structures. Drawing inspiration from these invaluable research repositories, we formulated a meticulous set of evaluative criteria and incisive questions. This framework now serves as a compass to rigorously assess the efficacy and robustness of various prover mechanisms.

In essence, our week 6 activities entailed not only generating a tangible tool in the form of the comparison table but also delving into the very fabric of zk-rollup designs, identifying potential vulnerabilities, and contributing to the discourse around sustaining the decentralization ethos of Ethereum.


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**References**
* [Decentralized zk-Rollup](https://hackmd.io/@yezhang/SkmyXzWMY)
* [MEV-resistant ZK-Rollups with Practical VDE (PVDE)](https://ethresear.ch/t/mev-resistant-zk-rollups-with-practical-vde-pvde/12677)
* [The Definitive Guide to Sequencing](https://prestwich.substack.com/p/the-definitive-guide-to-sequencing)
* [Sequencer Selection: B52 — PBS with a federated prover network](https://discourse.aztec.network/t/proposal-sequencer-selection-b52-pbs-with-a-federated-prover-network/351)