What keeps track of billions of financial transactions?

A distributed ledger technology, such as blockchain, keeps track of billions of financial transactions by recording them in a secure, immutable, and transparent manner. Each transaction is grouped into blocks and linked in a chronological order, making it nearly impossible to alter past records. Additionally, centralized databases used by financial institutions also manage vast volumes of transactions, ensuring accuracy and compliance with regulations. These systems work together to maintain the integrity and traceability of financial data.