The problem with this ticketing system is that only an OTRS agent can view it. Given this information, we cannot rely on this OTRS ticket to disprove that TVXQ's Cassiopeia did not have the largest fanclub. It is basically similar to the Textpert but much more unreliable since it came from supposedly Guinness World Record to an agent to a Wikipedia user (?) without any photographic evidence. This information alone is not sufficient to debunk the Cassiopeia theory. Also, this knowledge has been supported by the main broadcasting companies in Korea, KBS, MBC, and SBS, the most recent one being 2013 when Psy's Guinness certificate, and TVXQ's 2 Guinness records were announced. Erase the statement unless you get a direct evidence that we can all see that came from Guinness World Records.  

 P.S. Textpert is related to the Guinness World Records for it is on the back page of the Guinness World Record Book for people to contact, and know the records.