Check a passport
Is this real, and has it been changed?
Paste someone's results. We check the signature and answer in milliseconds. No account, and we keep no record that you checked.
Try that last button. It changes a single character and the check fails instantly. That is what stops anyone editing their scores.
Nothing checked yet
Paste a code above, or press “Use my own results” if you have taken the test in this browser.
What this check proves
- We issued exactly these scores, and nobody has edited them since.
- How much proof sits behind them. That count cannot be hidden.
- It does not prove the sender is the person who earned it. That is a different problem, and we will not pretend we have solved it.
Anyone can download our public key and run this check themselves, forever, without us.