Sarcouncil Journal of Multidisciplinary

Abstract: Biometric blockchain technology represents a paradigm change in identification management by combining unique biological identifiers with a laser system distributed to produce universal digital identification. This convergence not only addresses fundamental flaws in traditional centralized authentication systems but it also offers unmatched interoperability across institutional boundaries. Architecture protects privacy and ensures protection through cryptographic changes of biometric data using a multi-level, multi-layered strategy. Remarkable progress in transaction protection, prevention of fraud, and border payment efficiency is seen in the applications of financial services. Still, healthcare implementation also offers patients the ability to manage electronic records, pharmaceutical supply chains, clinical trials, and access to interpretation. Regulatory compliance requires flexible structures that adjust to various judicial criteria. In contrast, privacy issues require complex solutions such as homomorphic encryption and canceled biometrics to balance between the durability of biometric data and the need for cancellation. The blockchain architecture with granular consent management capabilities emerges as the major implementation paradigm, finding a middle ground between transparency and necessary privacy security. Federated identification models allow cross-domain authentication without the requirement of a centralized repository. The addition of zero-knowledge proofs enhances this equilibrium even further by permitting verification without disclosing underlying biometric data. The resulting ecosystem not only improves security postures by eliminating redundant verification processes but also fundamentally alters user experiences by maintaining cryptographic certainty of identity claims across previously siloed systems.