FYI, the record keeping requirements ETA mentioned above can be found in Circular 230 §10:6 (h).
(h) Recordkeeping requirements. (1) Each individual applying for renewal must retain for a period of four years following the date of renewal the information required with regard to qualifying continuing education credit hours. Such information includes — (i) The name of the sponsoring organization; (ii) The location of the program; (iii) The title of the program, qualified program number, and description of its content; (iv) Written outlines, course syllibi, textbook, and/or electronic materials provided or required for the course; (v) The dates attended; (vi) The credit hours claimed; (vii) The name(s) of the instructor(s), discussion leader(s), or speaker(s), if appropriate; and (viii) The certificate of completion and/or signed statement of the hours of attendance obtained from the continuing education provider. (2) To receive continuing education credit for service completed as an instructor, discussion leader, or speaker, the following information must be maintained for a period of four years following the date of renewal — (i) The name of the sponsoring organization; (ii) The location of the program; (iii) The title of the program and copy of its content; (iv) The dates of the program; and (v) The credit hours claimed.