Paper Title
Block4Health

Abstract
Healthcare data is rapidly expanding due to the development of new technologies and wearable sensor devices, making it challenging to maintain. In order to guarantee remote patient monitoring, these Iot devices—wearable sensors— are frequently utilised. Additionally, the market for electronic health records (EHRs) is expanding at an exponential rate. The major hospitals currently employ a client/server architecture for the implementation of this data storage method. This large hospital also sells this data to medical research institutes. The patient whose information was included in the EHR received no financial compensation. This creates a number of securities, right for EHR, and privacy issues that increase the distrust of healthcare systems and make them more vulnerable to attacks. As a result, a problem arises: how can we guarantee patients' access to their EHRs and offer a safer method of sharing them? The implementation of a distributed architecture is a requirement if these obstacles are to be overcome and security regulations are to be adhered to. As a result, we developed Block4Health, a web-based solution in which patients own their health data and can sell it to other users like medical research firms and drug development researchers while ensuring that no one else can use their data without their permission. We arrive at our solution by considering the following three primary factors: authority over an EHR, scalability, and security. It stores and transfers data using blockchain and other distributed technologies because it is based on web 3. Blockchain ensures the data's cryptic hash values are safe to store. Access control is helped by smart contracts. An IPFSbased off-chain database used to store data ensures block chain scalability. This system is helpful to support remote patient monitoring, especially for chronic diseases like corona that need to be checked on a regular basis. Keywords - Blockchain (Private Blockchain Ethereum),Cloud computing (Virtual Machine) Encryption/Decryption Algorithm, IPFS (Interplanetary File System), NFT (Non-Fungible Token).