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Imagine you're signing up to receive a free gift (a crypto airdrop) from a new website, but the site wants to make sure only one gift goes to one real person. That's the core idea behind Proof of Humanity (PoH) apps.
These apps and websites act like a digital ID card that proves two key things without sharing your personal documents:
The goal is to stop "bot farms" and scammers from stealing all the free tokens, which leaves nothing for the average, genuine user. By verifying you're a unique human, these systems ensure rewards are distributed fairly—like giving one lottery ticket to every person, not a thousand tickets to one clever scammer.
These apps use different methods to check your humanity, but they all serve the same purpose: to protect you and the crypto project.
| PoH App | Verification Method (The "Proof") | How It Works for You |
|---|---|---|
| Worldcoin | Iris Scan | You visit a physical device called "The Orb" to scan your eye. This generates a unique, anonymous "World ID" that confirms you're a human. |
| Humanity Protocol | Palm Scan | You use your phone's camera to scan your palm's unique patterns. The data is encrypted so your personal details are kept private. |
| BrightID | Social Vouching | You meet with other verified users in a group session (online or in person) who confirm you are a real person they know. |
| Proof of Humanity | Video Submission | You record a short video of yourself speaking and uploading it to a public registry, which the community then reviews to verify you. |