This project is part of the Master of Sound and Image Degree in the Sound Design specialty at the Portuguese Catholic University of Porto for the academic year of 2020/2021. It consists in a documentary about cryptocurrency in television format. I used this documentary to develop my skills, that I learned during my master’s degree, in the field of sound design for cinema. Throughout the work process I intend to investigate different perspectives of sonorization and problem solving, to experience some existing possibilities to produce sound for documentary. This report aims to define the entire technical and creative process and explain the resolution of problems that appeared throughout the production of the project.