It appears that amateur groups have launched rockets to space (above the Karman line), but these were flights of commercial (Pegasus) rockets by amateur teams.
What I am interested in is record-setting flights using rockets of amateur design and construction - highest altitude attained, highest velocity attained, longest duration under useful thrust. Has any rocket of amateur design/construction launched from essentially sea-level altitude and made it all the way up to or above the Karman line?