I've got a database of my collection for that, along with photos to "prove" I'm not making it up!
Well I take pics of every new surround music acquisition.. it serves a neat dual purpose, I can post it here and so maybe give a nice reference point for QQ members to see the actual discs and packaging for when they are out shopping and of screenshots of menu's and so forth.. and it also serves as evidence I actually have these things..
I'd heard that digital photography has certain info embedded now, apparently, apart from date stamps, I believe location info too, sounds useful for proof of purchase or rather ownership maybe.. though its really not my thing so that may all be hogwash.. either way, pics are helpful to the forum and there's that proof of ownership thing.. oh and I started keeping notes of each months purchases quite some years ago, including when, where and how much, I just wish life wasn't such a cheat and there was more time to do everything.. if I ever come back I hope I'm reincarnated as a Quaddy so I can pick up where I left off when I kick le bucket..!