Skip to main content
World ID is a privacy-preserving protocol that lets people prove they are real and unique online without revealing anything else about them. It gives developers a high-assurance trust layer to stop bots, Sybil attacks and deepfakes — while keeping onboarding fast and private, with user data off your servers. Through credentials like Proof of Human, Document and Selfie Check, World ID extends that trust layer with additional proofs without exposing underlying user data.

​
Credentials

Proof of Human

Proof of Human

Highest-assurance uniqueness signal from Orb verification. Best for one-person-one-action flows and strongest Sybil resistance.

Document

Document

Proves possession of a unique government document through NFC checks. Useful for fast proof of age and document-backed access flows.

Selfie Check

Selfie Check
Beta

Low-friction, medium-assurance liveness and uniqueness signal from a selfie flow. Best for sign-up and bot defense where speed matters most.

​
Start building

Stop bots and duplicate accounts

Use proof of human to enforce one human per account and reduce Sybil abuse in rewards, referrals, governance and account creation.

Protect conversion and user privacy

Replace CAPTCHA-heavy or document-heavy gating with reusable proof flows. Relying parties receive proofs, not personal data.

​
Privacy by architecture

Zero-knowledge proofs

Users prove what is true without revealing personal information. World ID generates identifiers scoped to each app and action, preventing different apps from using the proofs to correlate a person’s activity.

Multi-party computation

Matching and uniqueness checks are split across independent nodes so no single party holds complete sensitive data.

Self-custodial

Proof generation happens on the user’s device and can bind a developer-provided signal to the proof. Your app receives the proof, not raw personal data.