https://quint.sh Stories, tutorials, and insights about Quint specifications en-us We used Quint to analyze the MonadBFT consensus protocol, formally specifying definitions and pseudo code, validating lemmas and theorems through simulation, and reproducing scenario diagrams as executable runs. https://quint.sh/posts/monadbft https://quint.sh/posts/monadbft Thu, 07 May 2026 00:00:00 GMT Quint is becoming its own company, spinning out of Informal Systems to make trust a first-class property of how systems are designed and built. https://quint.sh/posts/new_era https://quint.sh/posts/new_era Thu, 16 Apr 2026 00:00:00 GMT We have modeled the Byzantine Generalized Lattice Agreement algorithm in Quint and found two bugs in the SAFE predicate https://quint.sh/posts/generalized_lattice https://quint.sh/posts/generalized_lattice Thu, 09 Apr 2026 00:00:00 GMT We wrote a Quint spec for the Faerie-Gold attack in the Zerocash protocol, plus a ZCash-like fix. https://quint.sh/posts/zerocash https://quint.sh/posts/zerocash Fri, 20 Mar 2026 00:00:00 GMT We used to build trust and understanding while coding. With LLMs, we need a new process. https://quint.sh/posts/cognitive_debt https://quint.sh/posts/cognitive_debt Mon, 09 Mar 2026 00:00:00 GMT We used Quint Connect and AI to increase test coverage and find a bug in Emerald https://quint.sh/posts/quint_connect_emerald https://quint.sh/posts/quint_connect_emerald Fri, 13 Feb 2026 00:00:00 GMT We launched Quint Connect, a library for Model-Based Testing in Rust https://quint.sh/posts/quint_connect https://quint.sh/posts/quint_connect Tue, 23 Dec 2025 00:00:00 GMT How executable specs can be our hope for the future of software https://quint.sh/posts/llm_era https://quint.sh/posts/llm_era Mon, 17 Nov 2025 00:00:00 GMT The message soup technique enables more powerful specifications. Featuring MonadBFT. https://quint.sh/posts/soup https://quint.sh/posts/soup Mon, 11 Aug 2025 00:00:00 GMT Learn about inductive invariants by defining them interactively with new Quint tools. https://quint.sh/posts/inductive_invariants https://quint.sh/posts/inductive_invariants Thu, 31 Jul 2025 00:00:00 GMT Use the Alpenglow spec to learn about this consensus algorithm in an interactive way. https://quint.sh/posts/alpenglow https://quint.sh/posts/alpenglow Mon, 21 Jul 2025 00:00:00 GMT How we used Quint to formalize Espresso's epoch change protocol with executable specifications. https://quint.sh/posts/espresso_hotshot https://quint.sh/posts/espresso_hotshot Thu, 22 May 2025 00:00:00 GMT Recap of our Quint launch event with community Q&A covering formal methods, model checking, and Model-Based Testing. https://quint.sh/posts/quint_launch_followup https://quint.sh/posts/quint_launch_followup Tue, 01 Apr 2025 00:00:00 GMT How Quint transforms complex DAG consensus algorithms into interactive, testable models. https://quint.sh/posts/mysticeti https://quint.sh/posts/mysticeti Wed, 19 Mar 2025 00:00:00 GMT Case study on using Quint to formally specify and verify Left Curve's Jellyfish Merkle Tree implementation. https://quint.sh/posts/jellyfish_merkle_tree https://quint.sh/posts/jellyfish_merkle_tree Wed, 05 Mar 2025 00:00:00 GMT Why we're rewriting Quint's simulator in Rust for improved performance and more comprehensive testing. https://quint.sh/posts/quint_deserves_rust https://quint.sh/posts/quint_deserves_rust Tue, 18 Feb 2025 00:00:00 GMT Using Quint for model-based testing to discover critical bugs in Neutron's $23M liquidity pool migration. https://quint.sh/posts/neutron_mbt https://quint.sh/posts/neutron_mbt Wed, 11 Dec 2024 00:00:00 GMT A fun exploration of drawing strategies for Secret Santa and their properties. https://quint.sh/posts/secret_santa https://quint.sh/posts/secret_santa Sat, 23 Dec 2023 00:00:00 GMT