In the era of technology transition, the traditional concept of identity has been redefined, giving rise to digital identity. This important shift in the identity management is setting the need for reconsidering how we treat the identities. The most feasible solution in this context is the Self-Sovereign Identity (SSI), which is a model designed to put identity under the control of individuals. This master's thesis, conducted at the Links Foundation, delves into the growing world of SSI within decentralized systems. By using blockchain technology and a tool called MetaMask,a SSI standalone framework has been developed and later integrated into the Data Cellar project of Links Foundation, showcasing its real-world utility.