Proof of Human (Sandbox)

In a world flooded with AI-generated text, how do you prove you actually wrote it? Proof of Human is the ultimate authenticity tool for professionals, students, writers, and anyone who needs to guarantee their content is 100% original. Instead of relying on inaccurate "AI Detectors" that guess after the fact, Proof of Human works while you type. It provides a clean, secure, dark-mode typing sandbox that monitors your natural human rhythm, keystroke speed, and paste events to mathematically verify your authenticity. 🛡️ HOW IT WORKS: Click the Proof of Human extension icon to open your secure typing sandbox. Type your email, essay, or message directly in the protected environment. The engine monitors your keystrokes in real-time. (Pasting large blocks of text instantly triggers an alarm and tanks your humanity score). When finished, click Export. The extension bundles your text with a beautiful, un-forgeable "Human Origin Certificate" that you can paste into Gmail, Slack, or any document. ✨ KEY FEATURES: The Clean-Room Sandbox: We don't inject messy code into your favorite websites. Our dedicated typing popup guarantees 100% accurate rhythm tracking without breaking the sites you love. Instant Paste Detection: Our algorithm immediately flags unnatural text dumps, ensuring only genuinely typed content earns a 100% score. One-Click Certification: Append a professional, formatting-safe Unicode certificate to your text to show recipients you put in the real work. 100% Private & Local: Your keystrokes and data NEVER leave your computer. There are no cloud servers, no databases, and no tracking. WHO IS THIS FOR? Freelancers: Prove to your clients that your work is original. Job Seekers: Guarantee your cover letters were written by a real person. Students: Protect yourself against false-positive AI plagiarism accusations. Professionals: Build trust in high-stakes emails and reports. Stand out from the bots. Install Proof of Human and bring trust back to your digital communication.