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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Spinout From Polygon To Consumer Network
- Privado ID spun out from Polygon to focus on privacy-first verifiable credentials and B2B tooling.
- Billions repositions that stack toward a mobile-first network of humans and AI with consumer growth focus.
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.
Circom Origin Story
- Circom began as Jordi's self-driven effort to make ZK tooling practical for identity.
- It emerged because existing libraries were impractical for their privacy-first identity use case.