The problem DECENTRALIZED PERSONAL HEALTH RECORD APPLICATION solves

-Currently, the hospitals use traditional methods to store critical medical data of the patients and that data is indirectly subject to various attacks and thefts.

-In digital health records in centralized system, data sharing and privacy preservation are big challenges since medical data is sensitive.

-To design a decentralized application that is secure , private and where doctors are given a dependable way to maintain patient privacy while storing information about medical history.

-To design a system which is more patient centric so, if patient wishes only then their health records will be shared with the doctors.

-To develop a system that stores and displays the patients medical data to save time during emergency situations.

-Provide secure storage for patient information: The decentralized nature of blockchain technology would ensure that patient data is stored in a secure and tamper-proof manner, protecting it from unauthorized access or breaches.

-Facilitate data sharing: The system would allow authorized healthcare providers and researchers to access and share patient data in accordance with patient consent and data privacy regulations.

-Improve data interoperability: The system would enable the sharing of patient data between different healthcare organizations and systems, which would improve the continuity of care and medical research.

-Automate healthcare-related processes: Smart contracts on the blockchain platform could automate various processes such as claims processing, medical research and medical billing.

-Enable patient control over their data: Patients would have the ability to control and manage access to their personal health information (PHI) through the use of digital identity and consent management tools.

-So in order to enhance the hospital's digital health system, we propose a "Decentralized Medical data sharing & storage application based on blockchain."

Challenges we ran into

-We get limited amount of GoerliETH on MetaMask to do the transactions , So we have to perform the each transaction carefully thus it is itself a big challenge to perform all transaction in a project using MetaMask. But we have done this by bulilding optimum code in solidity and get each transaction successful.

-While Deploying the contract there was an error with the openzapplin ERC 721.The error stated that totalSupply() function was not defined in this module. After an hour of research we changed the openzapplin version to ERC20 which solved the problem.