Verifiably Human

About

Verifiably Human lets you sign text with cryptographic proof of human authorship — directly from Chrome.

Write or paste text in the side panel, and the extension captures keystroke-level cadence evidence while you type. When you sign, the text is stamped with a verification URL anyone can check.

Features:
- Side panel composer with real-time typing cadence capture
- Tiered signing: Tier 1 (signed text) and Tier 2 (human typing evidence verified)
- Draft auto-save with sync to your account
- Import selected text from the active tab
- Copy signed text with verification link to clipboard
- Identity verification (KYC) integration through the web app
- Billing and plan management through the web dashboard

The extension uses your existing Verifiably Human web account via Clerk session sync — sign in once on the web app and the extension picks up your session automatically.

This extension records keystroke timing and text changes to generate human-authorship proof. Recording only activates when you click 'Track & sign' on a text field. Please only use Track & Sign on fields you are planning to sign.