You can add on-chain reputation checks to your application in under 5 minutes. This tutorial walks through the fastest path from zero to a working integration — querying scores, verifying proofs, and receiving real-time updates.

"Just analyze their on-chain history" sounds simple until you try to do it. Raw blockchain data is noisy, cross-chain identities are fragmented, and naive scoring approaches are trivially gameable. Here's how we built a scoring system that's actually useful.

When we set out to build a reputation layer for DeFi, we hit a fundamental tension: protocols need to verify creditworthiness, but users shouldn't have to broadcast their exact scores to the world. Zero-knowledge proofs solve this elegantly.

This post walks through how CrowdProof uses Groth16 SNARKs to enable private reputation verification — the tradeoffs we considered, the circuit design, and the performance characteristics.

On-chain activity tells a story. Every loan repaid, every governance vote cast, every trade executed — they form a pattern that reveals how reliable a wallet is. But until now, there was no standardized way to read that story.

CrowdProof is a decentralized identity and reputation protocol that transforms raw blockchain data into privacy-preserving reputation scores.