alexzoid
@alexzoid_eth
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Woop woop woop woop! ⌘ 🏆#1 https://t.co/1P9049UFHU ⌘ https://t.co/SgMFkV9hIq ⌘ DM for Top-Notch @CertoraInc Formal Verification
Joined June 2023
🏆Thrilled to hit #1 rank on @CertoraInc all-time leaderboard with my past @SiloFinance FV contest work!. Impressed how the Prover handled 10 interacting contracts like a beast. The complexity made this challenge even more rewarding. 📝Sharing my work and final report below!
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RT @_Czar102: I can confirm this – I tried other tools but they failed to reason about my code. Certora Prover is amazing.
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RT @cantinaxyz: The @aqua_token competition also featured a formal verification track powered by @CertoraInc. Top contributors on the FV si….
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RT @KirsteinUri: 1/ People ask me all the time how to learn CVL (Certora’s specification language for formal verification). Here’s a list o….
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RT @SagivMooly: The recording is now available AI can infer interesting high-level invariants of low-level code f….
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RT @SagivMooly: It is incredible how security researchers can quickly learn a new formal verification tool and a lending protocol. Thank you.
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RT @code4rena: The results of the $20,000 Formal Verification component of the Blend V2 competitive audit are in!. Big shoutout to everyone….
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Collected all my public @CertoraInc Formal Verification reports in one place, updating continuously. See how a well-crafted single property can catch multiple code changes across different locations.
github.com
My Public Certora Formal Verification Reports. Contribute to alexzoid-eth/public-fv-reports development by creating an account on GitHub.
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Solo hiking at sunrise is my perfect way to fill myself with energy and keep my mind crystal clear for the whole day 🇬🇪
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Really bullish on AI in FV! Can't wait to see what you're cooking up 🚀.
I was an early adopter of Logic and Abstract Interpretation in my career, yet I did not appreciate the utility of the internet and AI. We are now.combining AI and FV to secure the next generation of smart contracts. Hear the whole story tomorrow at EthCC 👇.
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RT @CertoraInc: The final report for the @SiloFinance v2 formal verification contest is now public!. Thank you to all participants and cong….
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8/8 Takeaway. Use invariants for what MUST always be true and rules for what should happen in specific cases. More examples of both types of properties in my past report.🔗
github.com
Silo v2 x Certora Formal Verification Competition (Jan 2025, #5 place) + report - alexzoid-eth/silo-v2-cantina-fv
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7/8 Cool feature. Invariants can be reused with requireInvariant! . E.g., if "total supply = sum of balances" invariant is proven, use it in other properties with `requireInvariant`. Rules don’t get this perk - they’re one-time tests.
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6/8 How they’re used. Invariants: Checked after every execution to confirm they still hold. Rules: Set up a scenario (e.g., `setupSilo(e)`), run a function, and assert an outcome (e.g., `pm >= cta`). Invariants are constant; rules are situational.
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3/8 DeFi examples. Invariants: Ensure the state stays valid. E.g., "The interest rate timestamp is never in the future" . Rules: Verify specific logic. E.g., "Minting includes fees correctly". One guards the core, the other checks the details.
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2/8 Simple analogy: A bank account. Invariant: "The balance can never be negative" - true no matter what happens. Rule: "A deposit increases the balance" - checks a specific action. Invariants hold always; rules test particulars.
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1/8 What’s the difference?. Invariants: Conditions that must always be true, like unbreakable laws. Rules: Specific checks for certain behaviors or scenarios. Think of invariants as the contract’s constitution, and rules as its day-to-day tests.
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Ever wondered how invariants and rules differ in @CertoraInc Formal Verification for Solidity smart contracts? Let’s dive in and break it down!👇8/8.
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