I am sorry to say but this kind of certification has no value, at least to me. What was the process to get it ? Following the course and complete a quizz ? In their about page i see Andreas M. Antonopoulos, Vitalik Buterin, and a few others listed as their Board of Directors. I am a little surprised to see them and I never heard about this consortium
I think it is illegal to offer and produce such certifications which are not managed by any central authority. Governments should take steps to stop such things from happening and people losing money in useless things.