# Kybos: Demonstrating DAHR's Universal Data Verification

By [Demos](https://paragraph.com/@demos) · 2025-11-17

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Made with the Demos SDK, Kybos is a dice game built on the Demos Network, accessible at kybos.demos.sh. Kybos in itself is an engaging predictions market game that combines classic dice rolling with blockchain-based betting and provably fair rolls executed publicly on-chain. Its creation however serves a more fundamental purpose: **it's the first simple demonstration of how Demos DAHR can verify data from any API.**

**DAHR in Action**
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Kybos showcases DAHR (Data Agnostic HTTP Relay) by proving that external data—in this case, dice roll outcomes, can be fetched from any API and verified on-chain without manipulation. The game's provable fairness isn't just about transparent gambling; it demonstrates that Demos' decentralized infrastructure can validate any off-chain data source in a tamper-proof manner.

This means the same technology powering Kybos' dice rolls can verify:

*   Price feeds from financial APIs
    
*   Sports scores from data providers
    
*   Weather data from meteorological services
    
*   Any HTTP-accessible data endpoint
    

**How It Works**
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Players follow a simple flow:

1.  Connect your Demos Wallet
    
2.  Select your bet amount
    
3.  Choose your prediction threshold (Even/Odd, Exact Number, High/Low, or Range)
    
4.  Hit roll, the die tumbles and reveals your results
    

Behind each roll, DAHR fetches the outcome from an external source API, verifies its authenticity, and records it on-chain. The explorer lets you examine every transaction, making the entire verification process transparent.

**Why This Matters**
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Kybos proves that Demos Network's Omniweb infrastructure enables secure, verifiable connections between off-chain data and on-chain applications. The same cross-chain interoperability and identity features that make Kybos seamless can power any application requiring trusted external data, from DeFi protocols to prediction markets to real-world asset tokenization.

Low fees, no KYC, provable outcomes. Kybos is more than a game, it's the proof of concept for universal data verification.

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*Originally published on [Demos](https://paragraph.com/@demos/kybos-demonstrating-dahr-s-universal-data-verification)*