Abstract

Block chain technology, a decentralized and immutable digital ledger, is revolutionizing data security and transparency across various industries. This article examines how block chain applications are transforming sectors such as finance, supply chain management, healthcare, and governance by ensuring secure, tamper-proof, and transparent transactions. Key features like decentralization, cryptographic security, and consensus mechanisms are discussed. The paper also explores challenges including scalability, energy consumption, and regulatory uncertainties. Finally, it highlights future prospects of block chain as a foundational technology for trusted digital ecosystems