Offchain Labs

Steven Goldfeder earned a PhD in computer science from Princeton University, where he co-authored the textbook 'Bitcoin and Cryptocurrency Technologies' with Ed Felten and others. At Princeton he worked with Felten and fellow graduate student Harry Kalodner on a technique for boosting Ethereum's capacity, publishing the Arbitrum paper in 2018. That research became the basis for Offchain Labs, which the three co-founded in 2018 by licensing the technology from Princeton. Goldfeder serves as CEO, leading development of Arbitrum, one of the largest Ethereum optimistic-rollup Layer 2 networks.

Ed Felten is a computer scientist and longtime Princeton professor of computer science and public affairs, and previously served as deputy U.S. Chief Technology Officer in the Obama White House. At Princeton he and graduate students Steven Goldfeder and Harry Kalodner developed the Arbitrum approach to scaling Ethereum, publishing it in 2018. He co-founded Offchain Labs in 2018 and serves as Chief Scientist, shaping the research behind Arbitrum's interactive fraud-proof design. He is also a co-author of the textbook 'Bitcoin and Cryptocurrency Technologies.'

Harry Kalodner was a Princeton graduate student researching cryptocurrency and blockchain scalability when he worked with Ed Felten and Steven Goldfeder on the technology that became Arbitrum, co-authoring the 2018 paper. He co-founded Offchain Labs in 2018 and serves as CTO, leading engineering on the Arbitrum protocol and its Nitro technology stack. His work focuses on the off-chain execution and interactive fraud-proof system that lets Arbitrum scale Ethereum while inheriting its security.