Zero Knowledge Evolving ZK Identity from Iden3 to Privado & Billions
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Sep 17, 2025 Join David Z, a seasoned ZK engineer and former Polygon contributor, alongside Oleksandr (Sasha), an expert in identity engineering and blockchain, as they delve into the evolution of ZK identity systems. They discuss their journey from iden3 to the launch of Privado ID and the ambitious Billions Network. Key points include the transformative Circom DSL, innovations in privacy-first tools, and the integration of AI agents into identity solutions. Their vision for creating accountable interactions in a decentralized world is captivating and forward-thinking.
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Early Bitcoin Faucet Experience
- Sasha's team once ran a Bitcoin faucet that generated 2% of all Bitcoin transactions at the time.
- That early experience shaped his blockchain tooling and product instincts.
Making Credentials ZK-Friendly
- The team standardized custom credential formats into W3C Verifiable Credentials and made them ZK-friendly.
- They added ZK-friendly signatures and revocation schemas to support governments and enterprise use cases.
Convert Existing Data To ZK Credentials
- Ingest existing issuer data and transform it into ZK-friendly verifiable credentials.
- Use ZK-friendly signature schemes and revocation models to preserve privacy while enabling verification.