The Reddy Anna book registerr stores key information like user IDs, betting history, transaction records, and account balances. It may also include timestamps for each bet, odds involved, and payout details. This data helps ensure accountability and transparency. By maintaining such detailed records, both users and administrators can easily resolve disputes or track performance. It also serves as a backup in case of system errors or misunderstandings. Data security and confidentiality are maintained through encryption and restricted access.