I would guess OpenStreetMap could record the location of each marker without linking them in trails or using the official logo of the markers (“one of our contr

I would guess OpenStreetMap could record the location of each marker without linking them in trails or using the official logo of the markers (“one of our contributors saw a marker labeled ‘13’ here” should be public info, shouldn’t it?), but even if that’s the case, I can see they don’t have the resources to go and try that in court.