Let’s get a few things straight.

Eden's lead investor - @multicoincap - is lying about Flashbots and Eden.

🧵
Contrary to Multicoin's claims, minimizing MEV is core to Flashbots' mission & products.

That shows from our funding of fairness and ethics research, work on MEV aware dApps, & 100s of users that have used Flashbots to skip the mempool & protect themselves from frontrunning.
More importantly, Multicoin is lying about Eden: it is not permissionless OR transparent.

Eden is a permissioned system with a multisig that has exclusive control over MEV payouts to miners. The Eden team alone decides whether miners are mining "Eden blocks" and should be paid.
What’s more, Eden refuses to disclose how they decide what is an Eden block and when they withhold MEV payments.

In contrast to the totally opaque and permissioned system of MEV payments pioneered by Eden, MEV through Flashbots is visible through our API and verifiable on-chain
Eden’s lack of transparency goes deeper: the subjective nature of their rules means that no one can verify what an Eden block is.

The Eden team claims high hashrate, but on-chain only 6% of blocks contain any slot txs and only 5% follow the whitepaper's ordering rules.
Moreover, miners are switching away from producing Eden blocks because of the opportunity costs of including low-fee transactions from Eden stakers when gas prices are high.

The economics of Eden are fundamentally broken.
Of course, it’s not in Eden’s interests to provide more transparency.

Eden's success relies on their token pumping. That's the only way miners might stomach the 40% tax (only 60% of inflation goes to miners) that Eden and their investors want to levy on MEV.
Flashbots is designed to be long term incentive aligned with the Ethereum ecosystem.

We have built strong ties to the community to achieve our goals of minimizing MEV to the extent possible and fairly extracting what we can’t.

We invite everyone in the ecosystem to join us.
If you are interested in learning more about MEV or Flashbots, we'll have a Twitter spaces tomorrow you can tune into

Lastly, Flashbots is growing fast. Check out our job postings below if you want to work at a long-term oriented organization that cares deeply about Ethereum.

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More from @bertcmiller

6 Sep
Dropping what is probably the most alpha packed thing I've written so far: an in-depth writeup of my strategy for a highly competitive MEV opportunity, the Synthetix Ether Collateral Liquidations, along with code

Blog post:
bertcmiller.com/2021/09/05/mev…

Repo:
github.com/bertmiller/sMEV
Blog post contains:
- My process from start the finish
- Explanation of why I made the design decisions I did
- How I sped up data collection
- A few gas optimizations
- Explanation of my economic strategy
- My novel bundle submission strategy
- Code snippets
- Many links
Repo contains:
- The only (I think?) open source example of how to backrun transactions
- Monitoring tools I made
- Contracts used for execution, including dydx flashloan
- Contract for data collection
- my somewhat embarrassing messy Hardhat testing env
Read 7 tweets
24 Aug
Alright, let's go

A thread on leveraged (!) sandwiching using flashswaps
Let's review what a normal 🥪looks like.

A victim attempts to trade on a DEX, buying asset X with ETH

1. A bot gets in front of them, buying X & raising the price of X

2. The victim's tx lands, further raising the price of X.

3. The bot sells X at this higher price for profit ImageImageImage
Two things to note here.

First, the bot starts and ends with WETH. That's because the victim was trading from WETH to another asset.

If victims are trading from a token to WETH it is harder to sandwich because bots don't hold random tokens.
Read 14 tweets
4 Aug
The beating heart of every blockchain is how space is allocated within a block.

With major changes to how Ethereum's blockspace market works in the near and medium term we'd like to share how Flashbots thinks about designing MEV marketplaces.

medium.com/flashbots/on-t…
Mining today consists of 2 jobs.

1st: create the most profitable block.

2nd: attest to this with a proof-of-work and propagate it to the network.

Prior to widespread MEV extraction, the 1st job was mainly ordering txs by their gas price, with optimization at the network lvl.
However, since MEV extraction is widespread now, the the job of miners has changed. Now to produce the most profitable block miners must find the optimal ordering of transactions within a block.

This is exponentially more difficult than sorting by gas price.
Read 12 tweets
31 Jul
Fatal flaws in a bot, a sort of on-chain virus, a trojan horse token, and arbitrage gone wrong

Join me in looking at the latest MEV bot exploit in this thread 👇🏻
The victim today tried to arbitrage the CHUM token (!) for ~0.01 ETH in profit, but in the process had 30 WETH transferred out of their wallet.

They only interacted with Uniswap v2 pools, how did this happen!?
Searchers optimize their contracts to the extreme to do very specific things very efficiently.

However, occasionally they have a need to do random things & add in functions that can be used for to execute basically any arbitrary transaction in a contract

Read 19 tweets
31 Jul
New MEV bot violence thread being written now 🔥
Writing this as quick as I can but I gotta figure this one out first. It's a hard one.
Looks like tomorrow or Monday I’ll put something out. Taking awhile to understand and express in a way that makes sense and I’ve got stuff to do today. Sorry folks.
Read 4 tweets
7 Jul
All 8 transactions here - including some from unexpected places - are a part of one sandwich!

A thread on the increasingly complex sandwich bots we're seeing
A normal 🥪 bot looks like this

🥪 frontruns a user, buying the asset they intend to and increasing the price. The user gets less tokens now.

The user's buy is then included, pushing the price up more

🥪 sells after the user's tx at the higher price, thus capturing profit
🥪 bots will watch the mempool for users trading with high slippage that they can frontrun. Until recently 🥪 bots would only do this with one trade, and with the Uniswap v2 or Sushiswap router.

But they've leveled up.
Read 13 tweets

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