Kostas Kryptos Chalkias

At-a-Glance

Co-founder and Chief Cryptographer of Mysten Labs, valued at over $2 billion, which created the Sui blockchain.
Led cryptography at Meta, contributing to Facebook’s Libra/Diem blockchain, Novi wallet, and WhatsApp payments.
Authored over 80 scientific publications and filed 13+ patents across 25+ years in technology.
Serves on the investor panel of Dragons’ Den Greece since 2026 to support the Greek startup ecosystem.
Worked as a white-hat security researcher, responsibly disclosing critical weaknesses in cryptographic implementations.

Biography

Kostas Kryptos Chalkias is the co-founder and Chief Cryptographer of Mysten Labs, a company valued at over $2 billion, known for creating the Sui blockchain. He focuses on transforming advanced research into secure, scalable, and usable technology, particularly at the intersection of cybersecurity, blockchains, and AI.

Before co-founding Mysten Labs, Chalkias led cryptography at Meta in California, where he contributed to Facebook’s Libra/Diem blockchain, Novi wallet, and WhatsApp payments.