Stephan Noller, Serial Entrepeneur from Cologne, Germany. Specialized in data-driven business models. Co-Founder of nugg.ad, Calliope, trackle and Ubirch. Blockchain Enthusiast – Ubirch offers a Blockchain for Things, trackle is the first in-body Blockchain sensor on the market. Vice-President of german association for the digital industry, member of the advisory board for the german ministry of economics and energy.