Book-entry accounts may be established in such form or forms as customarily permitted by the entity (e.g., Depository Institution, Securities Intermediary, etc.) maintaining them, except that each account established by such entity (other than a Reserve Bank) should include data to permit both customer identification by name, address, and taxpayer identifying number, as well as a determination of the Book-entry TVA Power Securities being held in such account by amount, maturity, date, and CUSIP Number, and of transactions relating thereto.