Nowadays, health systems are looking for effective ways to manage more patients in a shorter time, and to increase the quality of care through better coordination to provide quick, accurate and non-invasive diagnostics to patients. This paper aims to solve the dependence on trusted third parties by proposing a new management strategy, storage and security in a decentralized network through Blockchain technology. The proposed system also aims to offer a solution to help healthcare professionals to be informed of the slightest changes made in a patient's file in order to reduce medical error rates , but also by allowing them to consult them transparently if they are authorized .