https://orcid.org/0000-0002-3070-9075

Doutor em Engenharia da Produção. Universidade Federal de Santa Catarina (UFSC) – Brasil. alexandre.m.r@ufsc.br

ABSTRACT

This paper presents MedChain, a system proposed for managing professional trajectories in the healthcare sector. Despite advances in digital certification solutions, the literature still reveals a gap regarding the integrated and traceable certification of complete professional trajectories, especially in healthcare. The proposed system leverages blockchain, decentralized identities (DIDs), and distributed storage to provide a secure, auditable, and immutable environment. The study presents tests conducted in a simulated environment using data based on two Brazilian universities, whose results indicate the potential to improve the agility of certification processes, strengthen information security, and mitigate fraud risks when compared to traditional methods. The platform was designed to facilitate integration with existing institutional systems and to support scalability in university contexts. As a contribution, this study proposes a decentralized model that extends digital certification by integrating different types of professional records into a single auditable structure. As a limitation, the study has not yet been validated in real-world environments and still faces challenges related to institutional adaptation.

Keywords: blockchain; professional trajectory; digital certification; decentralized identities; public universities.