Kostas "Kryptos" Chalkias

Special guest

Kostas “Kryptos” Chalkias — a trailblazer in modern cryptography and one of the most respected minds in Web3 security. As the co-founder and Chief Cryptographer of Mysten Labs, Kostas has been instrumental in building the Sui blockchain and the Walrus decentralized storage layer. With a PhD in identity-based cryptography and a career that includes leading Meta’s cryptography team for the Libra project, designing secure systems for WhatsApp, and architecting R3’s Corda blockchain, his expertise runs deep across both academia and industry.
He is the mastermind behind innovations like zkLogin for OhAuth crypto authentication, HashWires range proofs, and Winterfell — the first open-source STARK prover. A prolific researcher with over 50 scientific publications, white-hat hacker, and passionate hackathon veteran, Kostas continues to shape the future of secure blockchain infrastructure.

Kostas "Kryptos" Chalkias has been a guest on 1 episode.