Cryptographic Proof of Real Human Interaction — Without CAPTCHA
CAIBE is a cryptographic challenge–response system that verifies live, genuine human interaction at the protocol level — stopping bots, replay attacks, and scripted abuse without CAPTCHA, biometrics, or user tracking.
FreQuid provides CAIBE as an open, auditable security primitive for modern applications.
The Problem
Modern applications are under constant automated attack:
- Bots bypass CAPTCHA at scale
- Replay attacks exploit static challenges
- Automation frameworks simulate “human behavior”
- Biometric and fingerprinting solutions compromise privacy
- User experience degrades as security increases
Existing solutions trade usability for weak security.
The Solution: CAIBE
CAIBE (Certificate Authority & Idenitty-based Encryption) + (Challenge-Adaptive Interaction-Bound Encryption) verifies that a request originates from a live, interactive human session — not from scripts, bots, or replayed credentials.
Instead of asking users to “prove they’re human,”
CAIBE cryptographically proves interaction authenticity.
How CAIBE Works
1. Adaptive Cryptographic Challenges
Each session receives a dynamically generated cryptographic challenge that cannot be precomputed or reused.
2. Interaction-Bound Responses
Valid responses are bound to real-time interaction and session context — not static secrets or stored credentials.
3. Replay & Automation Resistance
Responses are mathematically invalid if replayed, scripted, or generated out of context.
4. Stateless Verification
Servers verify proofs cryptographically — without storing personal data, fingerprints, or behavioral profiles.
5. Privacy by Design
No biometric data
No device fingerprinting
No user tracking
No personal identifiers
Where CAIBE Is Used
🔐 API & Backend Protection
- Prevent scripted abuse
- Stop credential stuffing
- Enforce real interaction per request
🧑💻 Registration & Login Security
- Replace CAPTCHA
- Block fake account creation
- Reduce friction without sacrificing security
🌐 Web3 & Sybil Resistance
- Proof of real users without wallets
- Anti-bot protection for mints, drops, voting
🤖 AI & LLM Access Control
- Prevent automated prompt abuse
- Ensure requests originate from live users
Open, Auditable, and Transparent
CAIBE is open source by design.
- Public reference implementation
- Auditable cryptographic logic
- Protocol-level transparency
👉 Explore CAIBE on GitHub:
https://github.com/1mschling/caibe
FreQuid builds on CAIBE to provide production-ready deployments, tooling, and enterprise support.
Built for Modern Security Requirements
- Zero trust compatible
- Privacy-first by default
- Stateless & scalable
- Designed for adversarial environments
CAIBE does not try to guess if a user is human.
It proves it cryptographically.
Call to Action
Start with CAIBE.
- Review the protocol
- Run the reference implementation
- Integrate proof-of-interaction into your stack
👉 GitHub
