  In our digital world, access to personal and public data has become an item
of concern, with challenging security and privacy aspects. Modern information
systems are heterogeneous in nature and have an inherent security
vulnerability, which is susceptible to data interception and data modification
due to unsecured communication data pipelines between connected endpoints. This
re-search article presents a blockchain-based model for securing data pipelines
in a heterogeneous information system using an integrated multi-hazard early
warning system (MHEWS) as a case study. The proposed model utilizes the
inherent security features of blockchain technology to address the security and
privacy concerns that arise in data pipelines. The model is designed to ensure
data integrity, confidentiality, and authenticity in a decentralized manner.
The model is evaluated in a hybrid environment using a prototype implementation
and simulation experiments with outcomes that demonstrate advantages over
traditional approaches for a tamper-proof and immutable data pipeline for data
authenticity and integrity using a confidential ledger.
