Old Donation Help

Hello guys, just wondering if I could get some help with a really old donation I gave years ago. Back in 2005 (yes a LONG time ago) I use to use sythe on a different account. I had donator perk (can't remember how much, but still). During 2005 there was a massive data crash and sythe was down for a while. To my knowledge they had to use a backup of the site's data (everybodys accounts, etc). I remember losing a heap of posts and my donator status, also I quit runescape so I stopped coming on sythe. In 2007 I started runescape again and came back on sythe. I was never worried about it, still am not but I am just curious as to weither it is possible for me to proof if it was my old account? Just would be good to know, if anybody can help would really appreciate it.