Headshot of Lefteris Kokoris Kogias
Headshot of Lefteris Kokoris Kogias


Lefteris Kokoris Kogias

Research Scientist

I joined Novi in June 2020. I am interested in increasing the digital trust of online information and processes, especially those that impact the physical world. I am working on building a scalable and robust infrastructure for the future decentralized internet focusing on scalable blockchain systems, bias-resistant decentralized randomness generation, secure software update dispersion and novel applications of threshold cryptography and distributed consensus. Prior to Novi, I received my PhD from EPFL working with Prof. Bryan Ford on scalable and confidential blockchains.


  • 2017 IBM PhD Fellow
  • 2018 IBM PhD Fellow


Theory and practice of decentralized and distributed systems

Latest Publications

Reactive Key-Loss Protection in Blockchains

Sam Blackshear, Konstantinos (Kostas) Chalkias, Panagiotis Chatzigiannis, Riyaz Faizullabhoy, Irakliy Khaburzaniya, Lefteris Kokoris Kogias, Joshua Lind, David Wong, Tim Zakian

Trusted Smart Contracts Workshop at Financial Cryptography (FC) - 2021