Extropy.io
@Extropy
A blockchain consultancy based in Oxford, specialising in developing blockchain solutions, security auditing, training & more.
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Most people don't fully understand #MEV In reality, it’s an entire ecosystem shaping who wins and loses onchain. Today we’re launching a new course: 🎓 Advanced MEV: Navigating the Dark Forest academy.extropy.io 🧵 Here’s what you’ll learn:
If your idea of a good holiday is a notebook, a quiet corner, and some serious brainfood… You’re going to like what we’re dropping before the year is out. 🤔🌚📕 more soon...
MEV isn’t a side-effect anymore, it is the scaling bottleneck. In our State of MEV Research Q4 2025 we break down: • ePBS & the Free Option problem • The “MEV spam wall” on high-throughput L2s • TEEs vs Based rollups • Why block building is now constrained by geography +…
Week 48 was all about operational failure, not smart contract bugs. Dormant political scam wallets pivoted into SOL, a “payment” protocol rugged itself via EIP-7702, a hyped L2 mis-handled its own Safe, and Korea’s largest exchange found its wallet architecture fundamentally…
The zkML Singularity isn’t a metaphor anymore. In our latest piece, we map the moment where: – 13B-parameter models can be proven in <15 minutes – Ethereum L1 blocks can be proven in <12s on consumer GPUs – zk stacks unbundle into proving markets, verification chains &…
The problem with most “AI auditors”? They verify code, but don’t understand intent. Our new article explains how we’re using AI agents + a real-time Knowledge Graph of adversarial behavior to scale human intuition instead of replacing it. security.extropy.io/articles/scali…
Why isn’t your “plug-and-play” arbitrage bot printing money? In today’s MEV battlefield, public bots are just easy prey -- slow, predictable, and front-runnable. We break down why off-the-shelf bots lose, and what professional searchers do differently 👇 academy.extropy.io/pages/articles…
Love seeing high-quality Ethereum education stay open and accessible. Mastering Ethereum (2nd ed.) is available for free on GitHub – a full book on the protocol, EVM, and smart contracts: github.com/ethereumbook/e… Huge thanks to everyone who keeps resources like this alive for…
Last week was a breeze. This week is a storm. In Security Bytes week 47 we cover: • Stream + Elixir’s recursive “stablecoin” collapse • Cloudflare taking 20% of the internet down • Aerodrome / Velodrome DNS hijacks • A fake “Safery” wallet using Sui as a malware dead drop •…
More options for building privacy-preserving apps are good for the ecosystem. Interested to see what comes out of the Ztarknet + Zypherpunk hackathon.
Build your first privacy-preserving app on Ztarknet in under 1 hour. Ztarknet is the L2 on top of Zcash, combining Starknet’s scale with Zcash’s privacy. This workshop gives you everything you need to join the Zypherpunk hackathon and compete for $35k.
Most tools can tell you if the code is correct. Very few can tell you if the idea is exploitable. In our new article we break down how human auditors use economic modelling, composability analysis, and temporal logic to find the bugs AI and scanners will miss. Read “Beyond the…
Worth a read if you’re wondering what “post-quantum” actually means in practice. Clear explanation of why elliptic curves are vulnerable, why STARKs aren’t.
Manual tools find patterns. Humans find assumptions. We just published a deep-dive on 3 subtle, high-impact Solidity bugs that slipped past automated checks and how manual, adversarial review caught them. If “the tests pass” feels safe, read this: hackmd.io/@Extropy/3Subt…
Even in a “quiet” market, the attack surface doesn’t sleep. This week’s Security Bytes covers: 🌚$1M Moonwell oracle exploit ☠️$1.25M address poisoning mistake 🏫MIT brothers’ $25M heist mistrial 🧪Alleged $44M DWF Labs breach 🔄UK clawback from the 2020 Twitter hack Full…
From the Extropy archives…2018, Zero Knowledge Developer Workshop Hackathon. @Zcash cryptographers on stage walking us through how it all actually works. As @extropyLaurence put it: “I was in awe.” Still are, to be honest. @ZcashFoundation
Last chance before we post the solution next week: What’s the hidden assumption in this LP valuation function, and how does it break correctness?
This function calculates the value of expired LP positions. One quiet assumption creates a real bug. 🐛 What’s the assumption, how does it break correctness, and how would you fix it? 🧐
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