Matthias Geihs is a Principal Software Architect at the blockchain-focused startup PolyCrypt GmbH where he leads the development of the Perun Hyperledger Labs project, which focuses on blockchain scalability and interoperability. Before, he completed his PhD in Computer Security and Cryptography at Technische Universitität Darmstadt on the topic of secure digital archiving and worked in the financial services industry as an IT Security Specialist.