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

A new startup called &Truth is joining the race to automate formal verification, a painstaking process that uses math to prove software works as intended. buff.ly/mY3cQ1I

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/sci…

Was eating a philly cheesesteak a few months ago when @ClarkBarrett7 called to tell me I should probably find a coadvisor, as he was going on leave to start a code verification company. After a second of chewing, I told him I would be dropping out to join @andTruthPBC immediately.

Formal verification of all software is the only scalable solution to trusting legacy and AI-written code alike. There is no better team on the planet to solve this problem, and it is the privilege of a lifetime to be a part of it.