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Abstract of electronic health records project

The project aims to explore the integration of blockchain technology into electronic health records (EHR) systems to enhance data security, transparency, and interoperability in healthcare. The existing healthcare system often faces challenges related to data privacy, integrity, and accessibility. Blockchain, with its decentralized and immutable nature, presents a promising solution to address these issues.

Existing System

The current healthcare system relies on centralized databases for storing and managing Electronic Health Records. This centralized approach poses security risks and hinders efficient data sharing among healthcare providers. Data breaches and unauthorized access are constant concerns in this environment.

Proposed System

The proposed system leverages the Ethereum blockchain and Solidity smart contracts to create a decentralized, secure, and transparent EHR system. Blockchain’s tamper-resistant ledger ensures the integrity of health records, while smart contracts facilitate automated and trustless execution of predefined rules for data access and sharing.

System Requirements

The system requires a robust and scalable blockchain infrastructure, with a focus on Ethereum. Additionally, secure data storage solutions and efficient consensus mechanisms are essential for ensuring the reliability and performance of the proposed EHR system.

Hardware and Software Requirements

Hardware requirements include servers capable of running Ethereum nodes, ensuring redundancy and fault tolerance. Software requirements involve deploying Ethereum clients, smart contract compilers, and secure data storage solutions. The system may also include encryption tools for additional data security.


The architecture comprises a decentralized network of nodes running Ethereum clients, each maintaining a copy of the EHR blockchain. Smart contracts define access controls and data-sharing policies. Interactions with the blockchain are facilitated through a secure API layer, ensuring compatibility with existing healthcare systems.

Technologies Used

  • Ethereum blockchain for decentralized ledger
  • Solidity programming language for smart contract development
  • IPFS (InterPlanetary File System) for decentralized and distributed file storage
  • Web3.js for interaction between the frontend and the blockchain
  • Secure key management and encryption technologies for data protection

Web User Interface

The user interface provides a seamless experience for healthcare professionals, administrators, and patients. It includes features for viewing, updating, and sharing health records securely. Access controls defined by smart contracts ensure that only authorized parties can view specific information, maintaining patient privacy.

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