In this episode, Anna Rose chats with David Z and Oleksandr (Sasha) from Privado ID and Billions Network about the evolution of ZK-based identity systems, tracing their roots back to iden3 in 2018, one of the earliest projects to pioneer ZK for on-chain identity. They discuss their origin as the iden3, their creation of the influential Circom DSL, the move into Polygon ID, the spin-out as Privado ID with a focus on B2B privacy tools and verifiable credentials, and the recent launch of Billions Network, which aims to build a scalable network of humans and AI agents with mobile-first verification and progressive proofs. They compare their broad, composable approach to projects like Self, Rarimo, and ZK Email, while highlighting future plans for reputation layers, on-chain economies, and AI agent identities to enable accountable interactions in a decentralised world. Related links:

ZK Whiteboard Season 3 Module 2 High-Performance Engineering for SNARKs, w/ Jim Posen

Evolving ZK Identity from Iden3 to Privado & Billions

Zero Knowledge