What Makes RTL Proof More Than a Passing Checker

A concept-level guide to the three attributes that distinguish a strong RTL Proof from a weak one.

Updated 2026-07-27

Passing code and a green checker prove your design works. They do not, by themselves, prove you understand what you built — that is the gap RTL Proof closes.

Three attributes close it:

  1. A design explanation in your own words. Architecture, the datapath/control split, and at least one real tradeoff you made — not a restatement of the spec.
  2. Simulation evidence tied to specific test cases. Which cases you ran and what they showed, not just "all checks passed."
  3. A synthesis-awareness note. Which warnings you checked, and whether each one is expected or worth fixing.

The most common way a proof goes from strong to weak is not broken code — it is a design explanation left as a placeholder after the deterministic checks already passed. A reviewer can verify correctness from the checker alone; the design explanation is the only place that proves understanding.