Most first products fail for one boring reason: nobody was looking for them. You find out after weeks of building. Proof Check moves that moment to tonight.

You type your idea. It opens the right searches on Whop, Etsy, Gumroad, Amazon, Reddit, YouTube and Google Trends. You save what you find, one link at a time. Then you score the idea on seven lines, and here’s the catch: a point only counts if you attach a link that proves it. No link, no point.

At the end you get a stamp: build it, sharpen it, or drop it. Plus a one-sentence promise and a first listing draft built from your own answers.

What you get:

• ProofCheck.html, the tool. Opens in any browser. No account, no install, no subscription.
• Start-Here guide on your access page: the evening plan, what counts as proof, five red flags, what to do after the stamp.
• Copy-ready prompts for ChatGPT or Claude at every step, written to ask for real links only.
• A one-page result you can print or save as PDF.

Why this one: most idea validators hand you a score and keep the formula hidden. Here every point sits next to the link that earned it. And it doesn’t stop at the score: you leave with words you can put on a store page.

Not for you if you want a finished winning product handed to you, or a tool that promises sales. Nothing can. This shows you whether people already spend money on the problem.

Access: 12 months, including all updates. Founding price $19 until 30 November 2026, then $29.