Your posting makes no sense. Xaurum is not 100% backed by gold and it will never be. It has its golden backing behind of it and it can only go up. The backing can never drop. But bigger the difference between golden and production price, faster the backing. The gold behind of xaurum is meant for knowing where the worst case scenario is and for measuring events that are happening on xaurum network. You can do the calculation how much the gold increased because of all transactions, mints, minings.

I suggest you to do the deeper study of the project because when you will understand it, you will fall in love with it. Do not feel odd if you will need a few weeks to really understand it, because even I needed this, even though I know devs in person. If you need any help let me know.