"Blockchain ! Do you have, REAL examples in the business environment ?" This is probably the most popular question I have had in my conversations about Blockchain these last weeks. If 2017 sounds to have been the year when the world (except the most early technological birds) opened up to blockchain, 2018 sounds to be the year to question whether it is becoming real or not. By real, people mean “do some actors use it in some processes of their professional life?” The questio