I would prefer that Copperwood submits his own ban appeal. Though you were both banned related to the same offence, you are two different players.
As far as proof of your own offence (knowingly using xray to cheat), I was tipped off by copperwood calling out in global chat that 'there's diamond under the gravel'... While invisible I watched him call out to you where he saw/found ores that were hidden by solid blocks, which you then mined and divvied up. It is very obvious that there was no other way for him to have found that initial diamond ore, or that you could really believe it was just luck that you both made parallel holes through earth and stone and stopped almost immediately on top of diamond. Whether you personally had xray installed when I banned you or not, it was very obvious that you were taking knowing advantage of copperwood's use of the mod/texture pack.
If that weren't already enough to incriminate you, when I made clear that I was prepared to ban you as well, you admitted to having X-ray previously... (http://www.opticraft.net/proxy.php?request=http%3A%2F%2Fi.imgur.com%2F3f7dnKi.png&hash=fdc79d7c0552e1c0c09b7a0bac9e33fe) (http://imgur.com/3f7dnKi)
That alone would have been enough to ban you...