Nowadays, assistive technologies, especially in the health sector, are entering more and more into our lives. While their primary goal is to enhance human well-being, they also pose potential risks that could significantly impact the security and privacy of individuals. Our initiative targets the creation of a secure ecosystem specifically tailored to a healthcare application. Leveraging cutting-edge technologies such as p-ABC credentials and sophisticated wallet applications, in alignment with emerging European regulations and eIDAS standards we fortify data integrity and user privacy. Our development will be built over blockchain technology offering a decentralized approach and establishing trust within the participating entities. Furthermore, since these systems utilize healthcare data, our solution integrates Federated Learning to establish data privacy during data transmission and training.