Blockchain is an emerging technology with decentralized (Nakamoto, S., Bitcoin, A. (2008). Peer-to-peer electronic cash system. BN Publishing, La Vergne, TN, USA) and distributed technology utilized in third trusted party (TTP) for securing and solving cyberattacks. Healthcare system is a potential application having a strong impact on trustless and transparent system. The scope of PalCom middleware is to enable the GUI development and maintains the huge data values using blockchain. The PalCom directives use the commands/parameters in a limited version to access online patients. It aims to deliver a compiled working of blockchain to keep secure and safe digital relationships using private key cryptography and authentication. The challenges include fragmented patient data, medical record integrity, smart contract security, and privacy. This work includes using the Hyperledger and authentication algorithm. To solve the issues of provided data-intensive domain, i.e., healthcare system, the research shows the benefit and performance based on the cryptography algorithm and provided with the adherence to data regulations and standards.