The trust layer for human communication

Proof a real person
pressed send.

HumanStamp lets you cryptographically verify that a message came from a real human — not an AI agent. Face ID. One tap. A green shield that means everything.

Join the waitlist See how it works

Is this person actually human?

AI agents now call, text, and email indistinguishably from people. Your recruiter might be a bot. That investor intro could be synthetic. The voice on the phone may never have drawn a breath. There is no reliable way to verify — until now.

Why do I have to re-explain myself every time?

Every new service asks the same questions. Every chatbot starts from zero. Your context, preferences, and verified identity are locked in silos you don't control. You are a stranger to every system, every single time.

How it works

Three steps. Zero friction.

Cryptographic human verification that fits inside the tap of a send button.

You send

Tap send. Face ID fires in 0.3 seconds. Your message is signed with a private key that lives in the Secure Enclave and never leaves your iPhone — not even to us.

They see

Recipients see a green shield: real human, registered device, signed at send time. Cryptographic — not probabilistic. Not a score. A proof.

They verify

No app? No problem. Tap the shield and a browser verification page opens instantly. No install required. Works for anyone, on any device.

Who it's for

Built for everyone who communicates.

For People

  • Know when a message is from a real person, not an AI
  • Protect parents and grandparents from AI voice scams
  • Stop re-introducing yourself to every chatbot and business
  • Dating, hiring, anything where "is this real?" matters

For Enterprise

  • Verify contractors are real humans — not AI-submitted timesheets
  • Cryptographic audit trail for compliance and legal hold
  • Bank-grade human verification for high-risk transactions
  • Replaces CAPTCHA for verified, trusted users
The Shield

One glance tells you everything.

Three states. Instant signal. No guesswork.

Human Presence Verified
Green Shield
Real human. Biometric liveness check at send time. Cryptographically signed.
Identity Verified
Yellow Shield
Known sender. Verified account. No per-message liveness check at this time.
Unverified
No Shield
Unknown sender. Could be human or AI. Treat with appropriate skepticism.
For Developers

One API call.
Any platform.

Integrate human presence verification in under a day. Full OpenAPI spec, sandbox environment, and webhook support included.

Full OpenAPI spec Sandbox environment Webhooks SDKs coming soon
Join the waitlist 
# Verify a HumanStamp token
POST /v1/hpt/verify

Authorization: Bearer hs_live_••••••••
Content-Type:  application/json

{
  "hpt_token": "hpt_1a2b3c4d...",
  "message":   "Yes — I'm free Thursday."
}

→ 200 OK

{
  "result":       "valid",
  "shield_level": "green",
  "verified_at":  "2026-03-15T10:44:01Z",
  "device_id":    "dev_8f9e..."
}

Be first.

HumanStamp is in private beta with enterprise design partners. Join the waitlist for early access — and be ready for the moment the internet needs proof again.

No spam. No third-party sharing. We'll email you when it's your turn.