# Multi Block MEV **URL:** https://collective.flashbots.net/t/multi-block-mev/457 **Category:** Research **Tags:** brainstorming **Created:** [October 6, 2022, 11:01am UTC](https://collective.flashbots.net/t/multi-block-mev/457 "2022-10-06T11:01:02Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![alex](https://collective.flashbots.net/user_avatar/collective.flashbots.net/alex/32/8_2.png) [@alex](https://collective.flashbots.net/u/alex) #### Post date: [October 6, 2022, 12:19pm UTC](https://collective.flashbots.net/t/multi-block-mev/457/2 "2022-10-06T12:19:42Z")
Hey! This is indeed a problem, I haven’t thought through what being able to buy blocks for cheap means (aside from lowering cost of attack). We have thought about multi-block MEV generally in the past, and the potential for the same entity to propose consecutive slots (this is a problem regardless of PBS). We briefly talked to the Uniswap & Euler teams about this and wrote a draft memo on what it means. I believe there were short-term band-aids possible where the oracle could be calculated over more slots but nothing convincing. I’ll ping them to answer here! A few links for you in the meantime: - [Why is Oracle Manipulation after the Merge so cheap? Multi-Block MEV. - Chainsecurity](https://chainsecurity.com/oracle-manipulation-after-merge/) - [TWAP Oracle Attacks: Easier Done than Said?](https://eprint.iacr.org/2022/445) - [Statistical analysis on Ethereum k-consecutive block proposal probabilities and case study - Alvaro Revuelta](https://alrevuelta.github.io/posts/ethereum-mev-multiblock) For that last link from Alvaro, here is the tldr table at the end of the article, where columns are numbers of consecutive blocks, and rows are % of stake owned. ![telegram-cloud-photo-size-4-5782631504071998118-y](https://collective.flashbots.net/uploads/default/original/1X/5e2224d2229dbf35248d6055e9fd496afbc3e122.jpeg) and here are early theoretical results, also from Alvaro: ![image](https://collective.flashbots.net/uploads/default/original/1X/3e089181a6a0a8d47f1b5a1531d76377e91d643e.png) --- _[View the full topic](https://collective.flashbots.net/t/multi-block-mev/457)._