In the modern digital age, secure and efficient file sharing is paramount. This paper presents ablockchain-based real-time file sharing application that ensures data integrity, confidentiality, and decentralizedaccess. The system is developed using Python and JavaScript, with Flask as the backend framework and AESencryption for data security. Users can sign up, upload files, share them via links, and download them, all whiletransactions are logged immutably on a blockchain. This application offers a reliable, transparent, and tamper-proof solution for personal and organizational data exchange