Self Protocol

Verify real users while preserving privacy.

Overview

Self is a privacy-first, open-source identity protocol that uses zero-knowledge proofs for secure identity verification.

It enables Sybil resistance and selective disclosure using real-world attestations like passports. With a few lines of code, developers can easily check if their users are humans, while preserving their privacy.

All you need for building on Self

• Self Developer Tools

• Self Builder Group

• Celo Testnet Faucet

How it Works

Self Protocol simplifies digital identity verification with zero-knowledge proofs in three steps:

1. Scan Your Passport: Scan your passport using the NFC reader of your phone.

2. Generate a Proof: Generate a zk proof over your passport, selecting only what you want to disclose.

3. Share Your Proof: Share your zk proof with the selected application.

Common use cases for Self:

• Airdrop protection: Protect a token distribution from bots

• Social media: Add humanity checks to user's profiles

• Quadratic funding: Prevent farmers from skewing rewards

• Wallet recovery: Safeguard assets using IDs as recovery sources

• Sanction list checking: Check users are not on sanctioned entity lists