The aim of this thesis project is to analyse the existing Self-Sovereign Identity and Digital Wallet solutions used to manage digital information which identifies a user, to implement a prototype of an infrastructure simulating the issuance and usage of a digital identity called ValID. This concept spreads in the last two years due to the pandemic of COVID-19 because of the impossibility of performing in-person activities. The reference model of this project is that of the Self-Sovereign Identity because of its principle of giving the user sovereignty over his personal information. To develop this infrastructure, a study of standards, protocols, the eDIAS regulation, and of Distributed Ledger Technologies (DLTs) has been performed.