Provable Trust for the AI Era
Joined August 2026
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We are out of stealth! As AI writes more code, we're building tools to prove programs meet precise requirements, with Lean proofs anyone can independently check. Let's make verified software the norm in every language and application.
Come take a look: andtruth.com
Formal methods didn't start with us.
@ClarkBarrett7 on the people and tools &Truth builds on, from Turing, Hoare, and Dijkstra to Lean, Separation Logic, and SMT solvers:
andtruth.com/blog/shoulders-…
What does it mean to formally prove a program correct?
&Truth's Co-Founder and Chief Science Officer @ilyasergey revisits Turing’s 1949 paper to explain how proofs connect code to a precise statement of what it should do, and how Lean can check the reasoning.
andtruth.com/blog/program-ve…
Every AI safeguard is software. Sandboxes, guardrails, critical infrastructure underneath: all code.
If the code fails, the safeguards fail.
&Truth co-founder Chris Hsu on why AI safety starts with provably safe code:
andtruth.com/blog/ground-tru…
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We're in @nytimes: if AI can prove open math problems, can it prove software has no bugs? That is what we work on, with Lean as the foundation for machine-checked trust.
nytimes.com/2026/10/29/scien…
