The development of new blockchain business models led us to cross borders to Austria! Our Blockchain Bayern e.V. working group was invited to a workshop, which was jointly organized by the Center for Secure Energy Informatics of FH Salzburg and the company sproof. After critical discussions about the blockchain technology and suitable business models, the workshop ended with the hands-on blockchain game “The Proof of Sudoku” – a whole new experience for us. Further (and hopefully similarly productive) meetings of the working group are already planned.