Author : MRS. Sonawane Minakshi J. and Prof. Kumbharde M.V.

Blockchains are used as a technology emerged to facilitate money replace transactions and reduce the need for a trusted intermediary to notarize and verify such transactions for shield data its security and privacy. New structures of Blockchains have been designed to put up the need for this technology in other fields such as e-health, tourism and energy. This paper is apprehensive with the use of Blockchains in managing and using electronic health and medical report to allow patients, hospitals, clinics, and other medical stakeholder to share data amongst them, and improves interoperability. The Process of the Block chains , in which  architecture of blockchain depends on the entities participating in the constructed chain network. Although the use of Blockchains may reduce idleness and provide caregivers with regular records about their patients facing with few challenges of the whole network of stakeholders. In this paper, we investigate different Blockchains structures to check out existing challenges and supply the possible solutions. We see also various problem that may rendering attacks.

Keywords: Smart Contracts, Healthcare including Block Chains, Interoperability of Healthcare