Hyperledger Fabric Blockchain: Secure and Efficient Solution for Electronic Health Records

Background:Electronic Health Record(EHR)systems are used as an efficient and effective technique for sharing patient’s health records among different hospitals and various other key stakeholders of the healthcare industry to achieve better diagnosis and treatment of patients globally.However,the existing EHR systems mostly lack in providing appropriate security,entrusted access control and handling privacy and secrecy issues and challenges in current hospital infrastructures.Objective:To solve this delicate problem,we propose a Blockchain-enabled Hyperledger Fabric Architecture for different EHR systems.Methodology:In our EHR blockchain system,Peer nodes from various organizations(stakeholders)create a ledger network,where channels are created to enable secure and private communication between different stakeholders on the ledger network.Individual patients and other stakeholders are identified and registered on the network by unique digital certificates issued by membership service provider(MSP)component of the fabric architecture.Results:We created and implemented different Chaincodes to handle the business logic for executing separate EHR transactions on the network.The proposed fabric architecture provides a secure,transparent and immutable mechanism to store,share and exchange EHRs in a peer-to-peer network of different healthcare stakeholders.It ensures interoperability,scalability and availability in adapting the existing EHRs for strengthening and providing an effective and secure method to integrate and manage patient records among medical institutions in the healthcare ecosystem.

Blockchain Management in Smart Grid

Power Supply and Smart Grid represent specific business,which must be managed by permissioned(private)blockchain.Despite its disadvantages-time consuming,expensive,and losing from network effect-the permissioned blockchain offers balance,guarantees stability,and provides physical limitations for usage of validating nodes only in the network.The management of permissioned blockchain is necessary for tracing the processes in it.The author has represented the moment following topics:the idea for applying blockchain in business environment,blockchain technology-as a linked list with a new key on each step,node structure and information models for node management with a large granularity,detail models for node management with accent on configuration and performance and managed objects classes for installation of blockchain network with accent on security and performance,models for blockchain network management and five scenarios for blockchain transactions management.The paper represents a stage of project Blockchain in Smart Grid:describing of Managed Objects classes for functional areas of blockchain life cycle:Provision,Configuration,Maintenance,Security(developed),Accounting,Performance,and Subscriber control.The author uses the life cycle of telecommunications networks as a reference.The models are designed for user interface developers,university professors,and students.