by Alex · @proof
"LinkedIn post" by Alex was written over 3 minutes across 3 sessions, 100% of it typed rather than pasted, and scored 81.2/100 for human authorship by Humanums on March 23, 2026.
Paste the original content below to verify it matches this certificate. The check happens entirely in your browser — nothing is sent to our servers.
A Humanums certificate records how a document was written, not what it says. While the writer worked, the editor logged timing: the intervals between keystrokes, how long the pauses ran, where text was deleted and rewritten, how much arrived by paste, and how the work spread across sessions. Six signals are scored from that record and combined into the confidence score above.
No content was captured, only timing. The certificate is signed and carries a hash of the finished text, so it covers this exact version and nothing else. That is what makes it different from an AI detector: nothing here is a guess about the finished words.