Prove you're real
in a world of fakes.
CertainID uses biometric authentication and blockchain to verify your identity without ever collecting your data. Privacy-first. Decentralized. Unstoppable.
Three steps to sovereign identity
No servers store your data. No company controls your identity. Everything stays on your device and the blockchain.
Verify Your Identity
Upload your government ID and take a selfie. Images are hashed locally using SHA-256 — they never leave your device.
Biometric Authentication
Scan your fingerprint or face using your phone's built-in security. Your biometric creates a unique cryptographic proof.
Blockchain Registration
Your identity hashes are stored on Polygon blockchain. Only you control it. Anyone can verify it. No one can fake it.
Built for the age of AI
Deepfakes, identity theft, and synthetic media are eroding digital trust. CertainID is the antidote.
Zero-Knowledge Privacy
Your biometric data and document images never leave your device. We prove identity without collecting it.
Anti-Deepfake Protection
Sign your content cryptographically. Anyone can verify it's really from you — not an AI-generated fake.
Fully Decentralized
No central authority. Your identity lives on Polygon blockchain. If CertainID disappears, your identity doesn't.
Social Verification
Link your Twitter, YouTube, and other accounts. Prove your social media presence is authentically yours.
Identity for every industry
From content creators fighting deepfakes to governments modernizing citizen services.
Social Media
Verify creator identity
Finance
Decentralized KYC
Government
Digital citizen services
E-Commerce
Fraud prevention
Join the waitlist
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