Gottfried Herold is a German cryptography researcher at the Ethereum Foundation, where he is a member of the cryptography research team. ^{[1] [2]} He is recognized for his contributions to the theoretical foundations and practical implementation of cryptographic systems, with a focus on post-quantum cryptography, lattice-based cryptography, and the core protocols supporting the Ethereum roadmap. ^[3] His work spans multiple areas, including Verkle trees, data availability sampling for sharding, isogeny-based cryptography, and the formal analysis of cryptographic primitives. ^[4]​

Education

Gottfried Herold earned a PhD (Dissertation) at Ruhr University Bochumi in 2014. His doctoral thesis is titled “Applications of Classical Algebraic Geometry to Cryptography.” ^{[6] [3]}​

Career

Herold's career is marked by a transition from theoretical academic research to applied cryptography within the blockchain industry.

Early Academic Career

Before joining the Ethereum Foundation, Herold was an active academic researcher within the German cryptography community. His early work, with publications dating back to 2010, centered on public-key cryptography. During this time, he co-authored papers on topics such as fully anonymous group signatures with verifier-local revocation, structure-preserving signatures, and constant-size anonymous credentials. His collaborators included respected cryptographers such as Johannes Buchmann and Eike Kiltz, highlighting his strong foundation in the academic field. ^[4]​

Ethereum Foundation

Herold is currently a researcher on the Cryptography Research Team at the Ethereum Foundation. ^[4] In this role, he applies his expertise to solve foundational challenges related to the security, scalability, and long-term viability of the Ethereum network. He works alongside other prominent researchers, including Dankrad Feist, Dmitry Khovratovich, and Benedikt Wagner. ^[1] His research directly anforms the development and implementation of major network upgrades, such as the transition to Verkle trees and the implementation of Proto-Danksharding (EIP-4844), while also exploring future-proofing the network against quantum threats. ^{[3] [5]}​