Bitwise's XRP ETF filing has been officially acknowledged by the SEC, marking a new milestone in the race to launch a crypto-based ETF in the US.Interested parties have 21 days to send their comments, and the SEC will then decide to approve, disapprove, or institute proceedings.XRP failed to see substantial gains in the market after the filing acknowledgment, and its price has dropped over 5% in the past 24 hours.Despite the ongoing legal battle between Ripple and the SEC, Ripple's CEO believes that an XRP ETF is inevitable.