Prof. Dr. Tobias Fertig has worked as a smart contract developer and researcher since 2015. He has been enthusiastic about Ethereum since its beginning and has taught programming, software engineering, and distributed systems for several years. His lecture about blockchain and smart contracts has been delivered during international teaching weeks all over Europe. Together with Andreas Sch�tz, he is the founder of Sch�tz & Fertig GmbH, which focuses on developing and auditing smart contracts. Since 2024, Tobias is the professor of Blockchain and Secure Decentralized Applications at the Technical University of Applied Sciences W�rzburg-Schweinfurt (THWS) in Germany.