Dionysis is CEO and researcher at Common Prefix, focusing on consensus, light clients, bridges, interoperability, and fast bootstrapping. He did his post-doc at Stanford University, advised by David Tse. He holds a PhD from the University of Athens, advised by Aggelos Kiayias, and an Electrical and Computer Engineering degree from the National Technical University of Athens. Among other venues, he has published in IEEE S&P (Oakland), ACM CCS, ESORICS, and Financial Crypto, and presented at Black Hat Europe and Asia. Highlights of his research include the papers Non-Interactive Proofs of Proof-of-Work, Proof-of-Stake Sidechains, and Proof-of-Work Sidechains.