Paper Title
Privacy Preservation for Medical Details

Abstract
The project called "Privacy Preservation for Medical Details" is designed to keep patient information safe and secure. It stops people from accessing medical data without permission and stops data from being used in the wrong way. Right now, medical information is at risk because of cyberattacks, which can lead to privacy problems and ethical issues. To solve these problems, the system uses encryption and blockchain. This helps protect the data better, makes sure the data is accurate, and keeps track of who looks at the information.In this system, patient information is split and kept in three different servers. One server holds personal details, another holds medical records, and the third keeps track of the patient's health status. All the data is encrypted to keep it private. Blockchain is used to record every time data is accessed or changed. This creates a secure, shared record that can't be changed, which helps keep the data safe from tampering. Only people with the right keys can unlock and look at the data.The system has two main parts: the Administrator and the User. The Administrator handles and updates user information, while users can sign up, log in using a username and password, and look at their medical records after decrypting the data. By using encryption, spread-out data storage, and blockchain, this system makes managing medical data more private, secure, and trustworthy. Keywords - Blockchain, Decentralization, Privacy, Security, Smart Contracts, AES Algorithm ,Encryption,