“Biometric Authentication with Blockchain: A Secure and User-Friendly Approach” proposes a novel system, a Blockchain-based Distributed biometric Authentication System (BDAS), to address vulnerabilities in existing biometric authentication methods. The primary concerns tackled include the leakage of biometric information, irregularity in authentication modules, and non-transparency in information management. BDAS, leveraging blockchain technology, establishes a decentralized and distributed authentication system, ensuring reliable and secure authentication while minimizing performance overhead. The authors present a detailed exploration of biometric authentication, emphasizing the immutability of biometric data and the challenges associated with centralized management. They introduce BDAS as a solution that utilizes blockchain to enhance security, reliability, and transparency in biometric authentication. The paper includes an insightful evaluation of BDAS, comparing its performance with conventional authentication systems. The proposed system exhibits increased reliability in scenarios involving disabled clients, outperforming traditional systems. The authors conclude by highlighting BDAS's contributions to securing biometric information and propose future enhancements, such as optimizing template segmentation processes and considering the number of nodes for improved reliability.