This document proposes integrating cloud computing, big data, and blockchain technology to track large financial transactions in the banking sector and detect potential black money. The system would monitor all transactions over 20,000 INR, like bank transfers, land purchases, and gold purchases, and store the data on both public and private clouds using blockchain for security. If any single transaction or aggregate transactions exceed a user's reported income, a notification would be sent to tax authorities. The goal is to increase transparency and reduce tax evasion.