I have indicated with blue lines each time payments on the XRP ledger spiked since initially picking up exponentially in may. These blue lines point to major swings in price. Often the payment spikes precede a move up in price but a few times they point to the very top of a price swing. Given the assumption that payment providers are not waiting on the price to move to send payments We must conclude that most significant volatility is coming from the utility of the token. XRP/BTC will remain coupled to bitcoin as it is paired with bitcoin. I may note that payments have been consolidating since the 26 of july and we've yet to see them spike again. I hope this sheds some light for you. I have been working on this theory since may and believe there is enough data to make this conclusion.