A blockchain consultancy based in Oxford, specialising in developing blockchain solutions, security auditing, training & more.
Oxford, England
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- Followers 1,353
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🚨 Attention developers:
Ready to level up your understanding of MEV?
Our new course on Advanced Maximal Extractable Value drops Sept 23.
🎓 5 sessions
🛠️ Real-world infra & extraction strategies
🧠 Built for builders
academy.extropy.io
#MEV #Solidity #Web3Dev #ExtropyAcademy
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$41M lost to API keys. $8.4M drained by rounding errors. Devs hit by fake jobs.
Week 37 in crypto security was a crash course in how everything can go wrong — even when code is clean.
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Want to understand how MEV bots really work? 🤖
Start with this free session on smart contract obfuscation. ⚡︎
📅Full #MEV course launches Sept 23 on Extropy Academy.
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🌳MEV is the dark forest. 🌳
We’re handing you the map. 🗺️
🔗 Master the tools, strategies & infra behind real-world MEV.
🧠 Advanced course built for builders.
📍Full release Sept 23
🎟️ Register now: academy.extropy.io
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A few moments ago at #ETHWarsaw, @extropyLaurence on stage unpacking how #Web3 + #AI agents could power communities & public goods.
If you see him around @ETHWarsaw, don’t be shy — say hi 👋
📸 @zk_kirol
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What do a $5M bonus mint bug, $1M Uniswap scam, and a new KYC-powered DeFi future have in common?
They all happened this week.
Security Bytes is out. Link in comments.
#extropyaudits
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Workshops. Talks. Articles.
All in one place at academy.extropy.io
From #ZK security to #MEV obfuscation to smart contract audits to our recent talk @NapulETH to our security workshops with @lukso_io
And yes, it’s all free.
#extropyacademy
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Still building dApps? 🤔
⏰Time to level up.
Learn how to create #Web3 agents with memory, personality & coordination. 🧠🤖
#extropyacademy
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🎓 academy.extropy.io is live 🎉
Our Academy already features courses on #ZKMath, #CairoSecurity, and Agentic #Web3, alongside a growing library of talks and articles.
And we’re just getting started. Upcoming courses will cover:
⚡#MEV & Arbitrage: From front-running and sandwich attacks to building your own bot.
🛡️Security in #Solidity: Best practices, recent exploits, and the tools that matter.
🔮Vibe Coding in Web3: Using #LLMs to accelerate your development.
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Everyone’s talking about smart contract security. 🛡️
Almost no one is talking about the flaw that’s taken down some of Web3’s biggest names.
It’s not on-chain.
It’s not what you think.
Here’s what could be your protocol’s real point of failure:
#extropyaudits
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Big thanks to @blockchain_scot for an event packed with smart people and big ideas. We talked trustworthy #AI with #ZKML, jumped into the Autonomous Finance panel… and somehow still found time for selfies.
#extropy
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Security Bytes: w31 2025 🛡️ $140M from Brazil’s central bank. $6.8M drained via proxy wallet abuse. Jump exec targeted. Front-running validator slashed. Slippage games, airdrop ghosts, and more. The threats aren’t slowing down. Stay sharp
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🧠 ZK?
🤖 AI?
📜 On-chain agents with philosophical dilemmas?
Yeah, that sounds like a @extropyLaurence talk at @ETHWarsaw.
Catch us there!
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Touchdown in Napoli 🇮🇹
Sun’s out, coffee’s strong, and @extropyLaurence is gearing up to talk #zkML where #AI gets a privacy upgrade.
If you’re near or at @NapulETH, come say hi 👋and talk nerdy with us.
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Curious how @nori_zk is making #ZK bridges safer and more transparent?
This video breaks it down clearly — worth your time.
Full video: youtu.be/Wbs8kMRHKYs
The @nori_zk team are making great progress on their trust minimized ZK bridge from Ethereum to Mina.
Learn how they are building 'with Mina'
Full video: youtu.be/Wbs8kMRHKYs
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🧠 Everyone says zero-knowledge is “just math.”
But which math? Why does it matter? And how do #zkSNARKs actually work?
Coming soon from Extropy Academy:
Moon Math Simplified — a free workshop for devs who want to go beyond buzzwords.
Advanced made simple.
No fluff. No shortcuts.
Just #ZK, crystal clear.
More soon.
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Counting down to @NapulETH! 🍕
@extropyLaurence will be hosting a hands-on workshop exploring #zkML — where privacy meets AI.
If you’re curious about building intelligent agents without compromising sensitive data, don’t miss it.
#NapulEth #extropy
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#AI + #ZK + Public Goods → the future of on-chain altruism?
At @EthPrague, @extropyLaurence made the case for agentic Web3 — where autonomous agents can help scale impact, funding, and trust.
Worth a watch if you care about the future of AI, crypto, and humanity.
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Loved connecting with the @lukso_io builder community in our recent two-part workshop on smart contract security.
From common pitfalls to LSP quirks to audit readiness — both sessions are now available to watch.
📺 Both sessions are live, links in the comments
#extropyaudits #LUKSO #Web3Security
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Tomorrow at 2PM → catch @extropyLaurence on stage at @ethbelgrade.
He’ll be diving into Private Machine Learning — and how zkML is unlocking new possibilities for onchain privacy and AI.
If you’re at #ETHBelgrade, don’t miss it.
🕑 June 4th, 14:00
📍 Rise Stage
#extropyaudits #ethbelgrade #zkML #AI
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From #zk to agentic #Web3 — @extropyLaurence took #ETHPrague on a journey into the future of public good.
Thanks to the @EthPrague team for having us on stage!🤝
#extropy
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Full house for @extropyLaurence talk on #ZK math at @EthPrague yesterday 👏
📸: @zk_kirol
Thanks to everyone who joined!
Also… he might have found the real cause of Ethereum’s scalability issues 🤔
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🚨 $2.1M drained via a decimal bug in Mobius
🎣 $45M lost to phishing attacks on Coinbase users
📉 Market makers under fire after MOVE & OM token crashes
💀 LockBit ransomware gang… got hacked
Full breakdown:
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We’re live with Session 1 of our Smart Contract Security workshop on LUKSO!
Join us now: youtube.com/live/A2ZclJkQ41k…
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Excited to announce our second winner of the @lukso_io Security Check-Up: @YearOneIO! 🛡️
Their 🆙Assistants Catalog brings modular automation to wallet interactions — a promising addition to the #LUKSO ecosystem.
We’re glad to support their next steps!
#extropyaudits
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🧠 Something new is coming from Extropy.
Smart contract security. MEV. ZK.
Deep blockchain knowledge, made accessible.
#extropyacademy — launching soon.
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Yesterday at 6am in Oxford—May Morning. 🌅
A tradition that reminds us where we come from—and why we care about building things that last.
Oxford helped shape the way we think. We carry that spirit with us, every day—from ancient towers to zero-knowledge proofs.
#extropy #oxford #blockchain
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Oxford traditions meet blockchain roots.
This shot was taken by @extropyLaurence during his days at @UniofOxford, co-founding the Oxford Blockchain Society (@oxfordblocksoc).
It captures the iconic Magdalen Tower, where every May 1st at 6am, the Magdalen College Choir sings the Hymnus Eucharisticus—kicking off Oxford’s historic May Morning celebrations.
Tomorrow at 6am, he’ll be there again. Full circle. 🌅
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Excited to share that @mustaa_io is one of the projects selected for our LUKSO Security Check-Up program! 🎉
Mustaa is focused on shared ownership and usage of assets in Web3 — a powerful vision aligned with @lukso_io's creative economy.
Looking forward to supporting the next phase of their journey.
#extropyaudits #LUKSO
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🚨 Final call. We’re closing submissions tonight.
@LUKSOBuilders Don’t miss your chance to get early expert feedback on your smart contracts.
Selected @lukso_io projects will be announced next week!
⏱ Apply now: security.extropy.io
✅code: LUKSOCHECKUP
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Ever wondered how Zero Knowledge proofs actually stay secure? 🤔
✅youtu.be/hxPjKct-5iQ
This video walks you through #ZK security fundamentals—what to look for, how audits work, and why it actually matters. No fluff. Just clear, practical insights.
#extropyaudits #zeroknowledge #zksecurity
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Heads up, #LUKSO devs 👇
If you’re building with Universal Profiles or using LSP standards and haven’t applied for your free security check-up yet—this is your midweek reminder.
The deadline’s closing in fast.
🧠 security.extropy.io | Code: LUKSOCHECKUP
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🤔Curious about Zero Knowledge Proofs but not a math wizard? This is the best place to start.
📺youtu.be/G38G2sfZwB0
@extropyLaurence makes the core maths behind ZK actually make sense.
#zeroknowledge #zk
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⚡Reminder: We’re offering FREE smart contract check-ups for @lukso_io builders
In a recent audit, we found a critical issue:
A vault contract could be tricked into misreporting balances—breaking the link between what’s deposited and what users get back.
🔎These kinds of bugs are subtle… until they’re not.
🔗 security.extropy.io | Use code: LUKSOCHECKUP ✅
#extropyaudits #LUKSO #Web3Security
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ETH Bucharest, you were amazing. ✨
youtu.be/_ZaAaYdQUH0
@extropyLaurence gave a talk on Private Machine Learning with zkML, diving into how zero-knowledge can enable privacy-preserving AI on-chain. 🧠🛡️
Although it wasn’t meant to be recorded, one of the organizers, @EndiUngureanu, sat in the audience and filmed it on his phone. 📱🙌
That kind of initiative is what makes @ETHBucharest_ special. Big thanks to Endi—and to everyone we met this week. We’re already looking forward to next year! 🇷🇴♥️
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Excited to be listed as an official Builder Benefit on the LUKSO Builders Association site! ⚡
Huge thanks to @LUKSOBuilders — we love this community and can’t wait to support more @lukso_io devs with free smart contract security check-ups 💜
🔗 security.extropy.io
#extropyaudits #LUKSO
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Find @extropyLaurence 🔍
We made it easy for you this time 😄 Bonus points if you know about his t-shirt.
Great time at @zkproof last week—always a pleasure connecting with the ZK community. 🤝
#ZKProof #ZeroKnowledge #Web3Security
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📍Setting up for @ETHBucharest_ 2025 — hosted this year at Romania’s National Library. 😎
Talks kick off tomorrow. Builders are arriving. Pallets are being unwrapped. 👀
Let’s go.
#ETHBucharest #Ethereum #Web3Security
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🛠️ @lukso_io developers—what are you waiting for?
Applying for your FREE smart contract Security Check-Up takes 60 seconds:
1️⃣ Go to security.extropy.io
2️⃣ Click “Request an Audit”
3️⃣ Add LUKSOCHECKUP in the contact form
🎥 Watch the video. Do the thing. Stay secure.
#LUKSO #Web3Security #SmartContractAudit
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Quiz time 🧠
Think you’re a smart contract pro? Spot the red flags below. 👇
Drop your answer —or tag a dev who’d make these mistakes.
#Web3Security #SmartContractFails
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🚨 @lukso_io builders—don’t wait! 🚨
🔐 Smart contract security is everything. Grab your FREE Security Check-Up before slots run out.
Claim yours now on: security.extropy.io
Use LUKSOCHECKUP to apply.
#ExtropyAudits #LUKSO #Web3Security
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ETHBucharest is coming up fast, and we’ll be there!
@extropyLaurence is on the road, and his next stop is @ETHBucharest_ (April 2-5)—where builders, hackers, and Ethereum enthusiasts come together to push the space forward. 🌍⚡
If you’re in Bucharest, come connect with us! More details soon.
📍 Location: Bulevardul Unirii 22, Bucharest
🎟 Event Info: ethbucharest.ro
Who’s coming? Let’s link up! #Ethereum #EthBucharest
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Great being at #RealWorldCrypto today—always inspiring to be surrounded by the people building the foundations of secure systems we all rely on.
From cryptographic primitives to real-world impact, the conversations here run deep. 👇
@RealWorldCrypto
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When crypto meets cryptography (for real) at @RealWorldCrypto.
@extropyLaurence will be at #RealWorldCrypto tomorrow in Sofia—where protocols and math meet the messy, beautiful reality of the internet.
Who else is heading there?
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Smart contract exploits aren’t unique to Ethereum.
#LUKSO builders, if you’re gearing up for mainnet—don’t skip the security step.
We’re offering FREE contract reviews tailored to @lukso_io 🔐
🔗 security.extropy.io
✅ Promo code: LUKSOCHECKUP
#extropyaudits
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Great to be on the ground at @zkproof today! Always inspiring to be surrounded by people pushing the boundaries of Zero-Knowledge.
If you’re here, come say hi—we’d love to connect. 💬🧠
#zeroknowledge #zkproof #zk
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🔒 ZKProof is back! And you know what that means—one of @extropyLaurence favorite events of the year. 🎉
We love catching up with old friends & meeting new faces who are just as passionate about Zero-Knowledge as we are. If you’re in Sofia this weekend, let’s connect!
📸Photos from last years @zkproof in Berlin-- spot Laurence in 2 out of 3 pics—one is easy, the other… not so much. 👀
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If you missed our live session on MEV obfuscation techniques. Here's the recording 📼
MEV isn’t just about finding opportunities—it’s about hiding them. 🕵️♂️
Learn how MEV traders disguise transactions, evade frontrunners, and how devs can counter them.
📺 Watch now →
youtu.be/zWvcbTtLNQ4
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📍 Join us live on Discord → discord.gg/GwYKUETy
In just a few hours (15:00 GMT), we’re going deep into #MEV obfuscation—how traders hide transactions, how devs can counter them, and what it means for on-chain security.
Don’t just read about MEV—see it in action.
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MEV is evolving fast. If you’re not learning, you’re already behind.
This Friday at 15:00 GMT, join @extropyLaurence for a live deep dive into:
✅ The stealth tactics #MEV bots use
✅ Advanced obfuscation techniques
✅ How traders and devs can stay ahead
We’ll be walking through DeGatchi’s article on mempool obfuscation—breaking down how these techniques work in the wild.
📍 Live on Discord → discord.com/events/452053731…
💡 Smart money is in the game. Are you?
#extropy #extropyaudits
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🔴 Live MEV Deep-Dive – This Friday
#MEV bots extract millions—but the best strategies stay hidden.
Join @extropyLaurence for an advanced session on MEV smart contract obfuscation:
✅ How traders disguise transactions
✅ Techniques to avoid detection & front-running
✅ Defensive strategies for devs & protocols
📅 Friday, March 14 | ⏰ 15:00 GMT
📍 Live on Discord → discord.com/events/452053731…
💡 Don’t just observe—learn, build, and defend. See you there! 🚀
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Most smart contract exploits aren’t advanced—they’re preventable.
Most hacks don’t happen because of zero-days—they happen because of avoidable mistakes.
If you’re building on #Ethereum, #MINA, #Starknet, #Solana, or anywhere in #Web3, don’t assume security. Verify it.
🔒 Get a professional audit before it’s too late: security.extropy.io/
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🏡 Where do we want to live? Clearly at @HouseofZK!
@extropyLaurence repping @Extropy today at #ETHDenver2025—deep in the ZK trenches. 🔐👀
#ZK #Zeroknowledge
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We found this gem while digging through some old books—Swarm Intelligence by Bonabeau, Dorigo & Theraulaz.
@extropyLaurence read it a while back, but now feels like the perfect time to brush up.
AI agents are on our minds at Extropy… stay tuned. 👀
#extropyaudits #AgenticAI #ai
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Don't miss #ZKDay with @0zklab
Catch @extropyLaurence alongside an incredible lineup of engineers & cryptographers breaking down the latest in ZK.
Expect deep dives, real talk, and plenty of ZK memes. See you there! 👀🔐
🎟️ Grab your spot: lu.ma/kmgn4zp9
#ETHDenver #ZeroKnowledge #ZKVillage
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Hi #ETHDenver friends! 🎡 We’re here, soaking in the energy and deep-diving into all things #ZK, #AI, and #DeFi. If you see @extropyLaurence around, say hi! 🤝
The past few days have been packed with:
✔ NoirCon – hands-on ZK privacy workshops + AI x privacy deep dives 🛡️🤖
✔ Pragma – high-signal talks on Web3’s next big shifts 🔥
✔ Agentic Web3 – exploring the rise of autonomous agents 🚀
✔ @encodeclub hackathon – judging cutting-edge Modular DeFi innovations 💡
🔜 Up next: ZKDAY on Feb 27! Let’s talk ZK, audits, and all things #zeroknowledge.
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🔍 Big news! Extropy is integrating formal verification into our smart contract audits. 🛡️
By leveraging mathematical proofs, we’re taking security to the next level—eliminating hidden bugs, reducing exploit risk, and ensuring #DeFi protocols are bulletproof.
Read more: extropy-io.medium.com/using-…
#extropyaudits
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🤔 Want to actually build on @solana? Start here. 🔻
Most devs read about 🦀 #Rust & #Solana 🟣. Few actually build real projects.
The March @encodeclub Solana Rust Bootcamp is hands-on:
✅ Learn Rust from industry experts.
✅ Build real smart contracts & DeFi protocols.
✅ Go from zero to on-chain in weeks.
You could just watch tutorials… or you could build with us. 🏗️
🔗 Apply now: encode.club/solana-rust-boot…
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🛠 Building on Starknet?
Security isn’t optional—it’s a necessity. A single rounding error can drain millions.
✅ Don’t wait until it’s too late. Get a full Cairo smart contract security review before launch.
🔒 Book an audit today: security.extropy.io/
#extropyaudits #zeroknowledge #starknet
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💡 Precision loss in floating point math is a critical vulnerability in financial protocols.
To prevent mistakes like this, Starknet developers need to master Cairo security best practices.
We’ve put together a free YouTube series on Cairo security, auditing techniques, and smart contract best practices to help teams avoid these pitfalls.
📺 Watch now: youtube.com/@extropy_io/vide…
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