  Healthcare data is sensitive and requires great protection. Encrypted
electronic health records (EHRs) contain personal and sensitive data such as
names and addresses. Having access to patient data benefits all of them. This
paper proposes a blockchain-based distributed healthcare application platform
for Bangladeshi public and private healthcare providers. Using data
immutability and smart contracts, the suggested application framework allows
users to create safe digital agreements for commerce or collaboration. Thus,
all enterprises may securely collaborate using the same blockchain network,
gaining data openness and read/write capacity. The proposed application
consists of various application interfaces for various system users. For data
integrity, privacy, permission and service availability, the proposed solution
leverages Hyperledger fabric and Blockchain as a Service. Everyone will also
have their own profile in the portal. A unique identity for each person and the
installation of digital information centres across the country have greatly
eased the process. It will collect systematic health data from each person
which will be beneficial for research institutes and health-related
organisations. A national data warehouse in Bangladesh is feasible for this
application and It is also possible to keep a clean health sector by analysing
data stored in this warehouse and conducting various purification algorithms
using technologies like Data Science. Given that Bangladesh has both public and
private health care, a straightforward digital strategy for all organisations
is essential.
