In this paper, we proposed IndexOfBitcoinWalletData (IOBWD), a novel approach to indexing and querying Bitcoin wallet data. IOBWD combines data structures and algorithms to efficiently store, query, and analyze large datasets of Bitcoin transactions. Our evaluation results demonstrate the effectiveness of IOBWD in achieving fast lookup, efficient insertion, and scalability. IOBWD has the potential to become a valuable tool for investigators, researchers, and analysts working with Bitcoin and other cryptocurrencies.