Are you a real person?

This page asks Human Presence Protocol for one Boolean human-presence result. It does not run HPP cryptography itself. You need the HPP Chrome extension and the HPP iPhone app.

What is HPP?

Human Presence Protocol provides cryptographic evidence that a human was physically present at a device at the time an action was authorized.

Website request, then HPP verification, then QR, then iPhone, then biometric and hardware attestation, then the verifier, then success or failure.

HPP does not prove identity merely because it proves presence. HPP does not store biometric templates.

HPP does not attempt to distinguish bots by behavioral detection. Instead, valid attestations require the protocol's hardware-bound, biometric-gated verification process. Under HPP's stated trust assumptions, software automation alone cannot fabricate a valid presence attestation.

How it is used

A website can use HPP in the same conceptual place as a CAPTCHA. The site asks whether a real human is present. HPP runs the verification on the iPhone. The site receives true or false for the requested claim.

Typical uses include keeping automated software from completing a human-only action, without a behavioral puzzle and without identifying the person.

Developer contract

const verified = await HPP.verify({
  claim: "human_presence"
});