Athanasia Zlatintsi (National Technical Univ. of Athens, Greece); Panagiotis P Filntisis (National Technical University of Athens); Niki Efthymiou (NTUA); Christos Garoufis (National Technical University of Athens); George Retsinas (National Technical University of Athens); Thomas Sounapoglou (Blockachain PC); Ilias Maglogiannis (University of Piraeus ); Panayiotis Tsanakas (National Technical University of Athens); Nikolaos Smyrnis (Laboratory of Cognitive Neuroscience and Sensorimotor Control); Petros Maragos (National Technical University of Athens)