Blockchain technology is increasingly being utilized to bolster data authenticity in global digital transactions. By employing decentralized protocols, blockchain offers transparent and auditable records through cryptographic proofs and consensus mechanisms, addressing the manipulation risks associated with traditional databases. The technology is gaining traction across various sectors, including supply chain management, digital identity verification, and online platforms. Additionally, hybrid models are being developed to address privacy and scalability challenges, while integration with IoT and AI further enhances data integrity.