On January 11, 2018, Gert Jan Timmerman became the fourth Certified Blockchain Professional by scoring an 80% on the certification final exam. Gert Jan commented, "The course gave me a good overview of what Blockchain is, what types of Blockchains there are, and several use-case examples of possible applications using Blockchain. What I found particularly useful were the modules regarding the different ways of gaining consensus. These were very graphical and informative. There are excellent animations throughout the course that helped me to visualize and understand the concepts more readily. The questions at the end of each module were a nice recapitulation of the covered subjects." Please join me in congratulating Gert Jan on his achievement! You can see more of Gert Jan's background on LinkedIn.