Released in late 2012, Capture One Pro 7 represented a significant evolution in the software’s history. While Phase One has since moved on to versions 20, 21, 22, and beyond (now simply numbered by year), version 7 is remembered as a turning point where the software truly matured into a universal raw converter.
If you can't find your serial number, don't worry. You can contact Phase One support, and they'll be able to help you retrieve it. Phase One Capture One Pro 7 Serial Number