Evolving ZK Identity from Iden3 to Privado & Billions

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 Privado ID introduces Billions: The First Global Human & AI NetworkBillions Launches Mobile App for Digital Identity Verification in the Age of AIDEEPTRUST: VERIFIABLE IDENTITIES AND REPUTATION FOR AI AGENTSIden3 Protocol Specifications (Version 0)W3C: Verifiable Credentials OverviewPoseidon: ZK-Friendly HashingEuropean Digital IdentityZK HACK - Introducing Circom 2.0 - Iden3Iden3: Sparse Merkle TreesBillions App Transforms ID Verification with Privacy-First Liveness Checks     ZK Whiteboard Sessions is an educational video series produced by ZK Hack. It is focused on the building blocks of zero knowledge technology. Find season 3 of the Whiteboard Sessions as well as previous seasons here.     **If you like what we do:** * Find all our links here! @ZeroKnowledge | Linktree * Subscribe to our podcast newsletter * Follow us on Twitter @zeroknowledgefm * Join us on Telegram * Catch us on YouTube **Support the show:** * Patreon * ETH - Donation address * BTC - Donation address * SOL - Donation address * ZEC - Donation address Read transcript

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This episode was published on September 17, 2025.

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