Prove you're human,
not a prompt.
GotCHA replaces legacy CAPTCHAs with cryptographic proof games. Frictionless verification that bots can't fake and users actually enjoy.
GotCHA replaces legacy CAPTCHAs with cryptographic proof games. Frictionless verification that bots can't fake and users actually enjoy.
Trusted by
Composable cryptographic proofs that adapt to your security needs. Stack them for maximum assurance or use individually for lightweight checks.
Validates genuine user engagement through behavioral analysis. Captures micro-gestures, timing patterns, and response entropy that bots cannot replicate.
poi::verifiedConfirms real-time presence with temporal challenges. Prevents replay attacks and ensures the verification is happening now, not prerecorded.
pol::activeEstablishes unique human identity without PII. Zero-knowledge credentials that prove you're a distinct person across applications.
pop::uniqueFrom challenge to cryptographic proof in under a second. No frustrating puzzles, no privacy tradeoffs.
User triggers verification. GotCHA generates a unique challenge based on required proof types.
An interactive micro-game appears. Designed to be trivial for humans, impossible for automation.
Response data generates a zero-knowledge proof. No personal information leaves the device.
Proof is validated on-chain. Your application receives a signed attestation within milliseconds.
Interactive challenges designed to be instant for humans and impossible for bots. Click to experience each game type.
Identify the matching pattern in a split-second visual challenge.
Follow the moving target with natural mouse or touch gestures.
Tap elements in the correct order as they briefly highlight.
Create custom verification challenges with AI assistance and test them in real-time. Design unique games that generate cryptographic proofs.
Get AI-powered guidance to design new verification games. The Custom GPT helps you brainstorm mechanics, structure gameplay, and implement proof-generating challenges that are instant for humans, impossible for bots.
Open Game CreatorUpload your custom games and test them as live GotCHA challenges. Preview how they'll work in production, verify proof generation, and iterate on gameplay before deploying to your site.
Drop-in replacement for legacy CAPTCHAs. Same integration pattern, better UX, cryptographic proofs.
<!-- Before: reCAPTCHA --> <script src="google.com/recaptcha/api.js"></script> <div class="g-recaptcha" data-sitekey="..."></div> <!-- After: GotCHA --> <script src="gotcha.dev/api.js"></script> <div class="gotcha" data-sitekey="..."></div> <!-- Server-side verification --> POST https://api.gotcha.dev/verify { "secret": "your_secret_key", "response": "user_response_token" }
Join hundreds of projects using GotCHA to protect their applications from bots while respecting user privacy.