When Shift Happens Podcast

E155: SUI Network Founder: We Built What Ethereum and Solana Can't

Jan 22, 2026
Kostas Chalkias, co-founder and chief cryptographer at Misten Labs, left Facebook's Libra to innovate in quantum-safe cryptography with Sui. He discusses the unique features of Sui, including AI-ready infrastructure and large block sizes suitable for robotics. Kostas candidly shares insights on balancing user privacy with regulatory needs and the urgency of transitioning to post-quantum algorithms. With a focus on practical applications, he envisions Sui enhancing daily payments, gaming, and even robotics in the evolving crypto landscape.
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ANECDOTE

Explaining Cryptography With WhatsApp

  • Kostas explains cryptography to his mom using WhatsApp as an example of encryption protecting messages.
  • He frames cryptography as writing secret messages and digital signatures replacing handwritten ones.
ANECDOTE

Middle-Of-Night Idea Rituals

  • Kostas recounts cultivating brief wake-up writing sessions that produced ideas like ZKLogin.
  • He admits the habit is unhealthy but credits it for several creative breakthroughs.
ADVICE

Migrate To Quantum-Safe Now

  • Prepare blockchains for quantum risk now by adopting post-quantum algorithms and migrations before 2030.
  • Kostas recommends proactive migration to quantum-safe keys to avoid future integration and regulatory problems.
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