  A cyber-physical system is considered to be a collection of strongly coupled
communication systems and devices that poses numerous security trials in
various industrial applications including healthcare. The security and privacy
of patient data is still a big concern because healthcare data is sensitive and
valuable, and it is most targeted over the internet. Moreover, from the
industrial perspective, the cyber-physical system plays a crucial role in the
exchange of data remotely using sensor nodes in distributed environments. In
the healthcare industry, Blockchain technology offers a promising solution to
resolve most securities-related issues due to its decentralized, immutability,
and transparency properties. In this paper, a blockchain-inspired secure and
reliable data exchange architecture is proposed in the cyber-physical
healthcare industry 4.0. The proposed system uses the BigchainDB, Tendermint,
Inter-Planetary-File-System (IPFS), MongoDB, and AES encryption algorithms to
improve Healthcare 4.0. Furthermore, blockchain-enabled secure healthcare
architecture for accessing and managing the records between Doctors and
Patients is introduced. The development of a blockchain-based Electronic
Healthcare Record (EHR) exchange system is purely patient-centric, which means
the entire control of data is in the owner's hand which is backed by blockchain
for security and privacy. Our experimental results reveal that the proposed
architecture is robust to handle more security attacks and can recover the data
if 2/3 of nodes are failed. The proposed model is patient-centric, and control
of data is in the patient's hand to enhance security and privacy, even system
administrators can't access data without user permission.
