I uploaded my CQ WPX RTTY contest log to LoTW and was amazed by the QSL rate- out of 1760 QSOs there were 647 CONFIRMED, just two days after the contest is over. Overall, based on several contests from the past few years, out of 10,777 QSOs 4,876 of them have been confirmed as of today. Not bad at all. Rudy N2WQ