I've seen projects like Sign Protocol hit my feed and immediately trigger that familiar caution flag. The pitch lands clean and confident, which is exactly when I slow down and look closer.
At its heart, the idea is compelling: on-chain attestations that deliver verifiable records and portable proofs you can actually use across ecosystems. It's the kind of quiet infrastructure layer that serious builders respect because it solves a real problem most people only notice when it's missing. And in theory, it could become one of those foundational pieces that quietly powers everything else.
What makes me hesitate is how finished the whole narrative already feels. Truly early infrastructure usually has some visible friction patchy real-world usage, pricing that still feels experimental, the story and the on-chain activity still racing to catch up. With Sign, the framing is so tight and professional that it almost outruns the evidence I can actually measure right now.
That doesn't mean the project is weak. It just means I'm not willing to mistake a polished thesis for proven product-market fit yet.
So I'm watching it the same way I watch every other serious infrastructure play at this stage. The concept is strong. The real question is whether organic demand keeps building once the presentation fades into the background and the actual usage has to carry the weight on its own.