Firewall is building safe blockspace. Backed by North Island, Breyer Capital, and Hack VC.

Joined June 2023
209 Photos and videos
Pinned Tweet
20 Oct 2025
The EVM now has a brain that has been badly missing. Safe Blockspace has a built-in defender for your assets, meet Charmander. Our A.I. model is implemented in rust, and is uniquely part of our ETH rollup client
Charmander, I choose you [to protect my $$]. Yes, the EVM now has a brain, and it is core to safe blockspace. I demo’d this live with the $56M Kyber exploit. Here's some of the how, strengths, and trade-offs we’ve designed around
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The story of Bunni is a great example of how DeFi market structure kills innovation, and rewards losers. Hoping you see my write-up on this @boredGenius @0x_marty @0xSzeth and @Psaul26ix. I read their candid and raw post-mortem and I was inspired to put this piece together. Often I talk about how we fail users by enabling theft, but this is a prime story of how we also fail those who bother to innovate, in this case the Bunni team. Additionally, the path to PMF is corrupted. Web2 is more permissionless to build in. I don't raise it as an ideological issue, but instead one that causes the downstream effects we all lose from, i.e. useless tokens, predatory teams, or a lack of utility. Using our testnet I include a demo of how Charmander, our A.I. model within our EVM and execution client stops the Bunni exploit at run-time, as it objectively classifies the transaction as theft with math, and theft is an invalid action on safe blockspace.
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The reality is Code is Law in DeFi. Whether you like it, or not. The question is irrelevant. An attacker is going to rob every last user asset from a smart contract, if the smart contract lets them. No judge or court can stop that from happening. Since Code is Law, the Code must need to be magnitudes better. With safe blockspace we believe "Code" means the system design, the chain itself. Here are the facts: - it is social consensus that exploits are theft, and theft is not "accepted" behavior - yet chains are designed to accept theft today - for a decade this industry has tried to prevent exploits at the app-layer and has completely failed - failed to even stop the most fundamental exploit pattern of re-entrancy - the system must evolve, to stop the billions in user assets stolen per year @lessig , father of "Code is Law" correctly saw code as architecture that shapes how people interact with technology and the digital world, much like traditional laws regulate behavior in the physical world. That we have responsibility for what we program, how we design these systems. Design them to exploit users and they will. They have. Are we ok with that? I am not. The system today is completely broken. Safe blockspace is the implementation of a better designed system for DeFi and smart contracts. Program the values we hold into the system, such as theft is an invalid action, while still retaining user rights. This is the real cypherpunk way. This is the future. Read any of my recent articles to understand how we accomplished this. for those wondering what I'm referencing towards, it's from the recent docu described here: - x.com/DeFi_Dad/status/198072… - x.com/laurashin/status/19818… - x.com/PatrickAlphaC/status/1… - x.com/functi0nZer0/status/19… this spiel is not directed at @PatrickAlphaC or any of the posts I've tagged, much respect! I'm just glad to see the convo on this critical subject thanks to this great film. h/t @jamescraig1111 @CodeIsLawFilm , and all involved. My full thoughts in my article below.

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"A perfect spotlight on the absurd nature and tensions created by building a decentralized financial system... You can feel the passion, intensity, and terror these events have on people’s lives." -@iamoptmstc on @CodeIsLawFilm
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24 Oct 2025
safe blockspace disrupts the Lindy Effect of exploits
Why are re-entrancy exploits Lindy? The answer helped us eliminate malicious re-entrancy from the EVM. Safe Blockspace is a proof system for the app layer that disrupts the Lindy Effect. Here's a $27M Penpie live exploit on Base and Firewall as a showcase:
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Why are re-entrancy exploits Lindy? The answer helped us eliminate malicious re-entrancy from the EVM. Safe Blockspace is a proof system for the app layer that disrupts the Lindy Effect. Here's a $27M Penpie live exploit on Base and Firewall as a showcase:
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Charmander, I choose you [to protect my $$]. Yes, the EVM now has a brain, and it is core to safe blockspace. I demo’d this live with the $56M Kyber exploit. Here's some of the how, strengths, and trade-offs we’ve designed around
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12 Oct 2025
proof of tech begins... witness the magic yourself
some respite from the brutal price action, Proof of Tech begins... and yes it includes ***.testnet.usefirewall.com in this write-up is a live demonstration of magic via @UseFirewall safe blockspace, what to expect from our testnet, and the magic link
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6 Oct 2025
Technical jargon to high-level understanding, here's how smart contract networks work today and why users are robbed. Learn how Safe Blockspace changes this paradigm...
Ever thought maybe ECSDA recovery isn’t enough txn validation? If you use DeFi, this is the crux of all your fears. See what the Safe Sequencer offers. Topics: - how chains are designed to be exploited - weakness of formal verification - our impl. of dynamic analysis via A.I.
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Ever thought maybe ECSDA recovery isn’t enough txn validation? If you use DeFi, this is the crux of all your fears. See what the Safe Sequencer offers. Topics: - how chains are designed to be exploited - weakness of formal verification - our impl. of dynamic analysis via A.I.
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26 Sep 2025
why @UseFirewall ? see below
here's a quick story of mine, why @UseFirewall? a story about safe blockspace, that may compel you to give us a deeper look
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19 Sep 2025
we're so back
hello world... interested in @UseFirewall ? worth reading the below :) usefirewall.com/news/hello-w… hint hint
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13 May 2025
What is Firewall? We literally embedded Harry Potter into the chain itself 🪄 Safe Blockspace
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18 Apr 2025
Ignition Campaign: Phase 1 ✅! You, the early folks of the Firewall have made this warm-up these past months a big success 🔥 We're ready to head into Phase 2 this upcoming week. DO NOT WORRY, the Sparks stacking has just begun! For now head to our Discord and have some fun ✨
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17 Apr 2025
📢 Firewall Sparks Leaderboard is updated for Week 8, 9, and 10 from March 25-April 8! Role boosters are applied. Stay tuned for bonus distributions winners ✨ Check out your spot on the Leaderboard, and keep stacking sparks for Safe Blockspace: docs.google.com/spreadsheets…
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8 Apr 2025
📢 Chains continue to focus on speed in the name of "user experience". Aren't you glad your $$ got stolen in 500ms instead of 2 seconds? Users deserve better. This is why we Speed x Security. They deserve Safe Blockspace ✨ Enter Week 10 of our Ignition Sparks Campaign below: gleam.io/rrND3/ignition-camp…
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8 Apr 2025
📢 Chains continue to focus on speed in the name of "user experience". Aren't you glad your $$ got stolen in 500ms instead of 2 seconds? Users deserve better. This is why we Speed x Security. They deserve Safe Blockspace ✨ Enter Week 10 of our Ignition Sparks Campaign below: gleam.io/rrND3/ignition-camp…
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8 Apr 2025
h/t to @Regalekyle for the Flash analogy ⚡️
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