ID protection

Cessna 172C

I like Aircraft of most kinds.  I have been learning to shoot with my long lens hand held so I shoot aircraft as they fly over if they are within range.  My basic goal is to have a specific name for the subject of my image.  I found that I can do this by looking up the license number of the private aircraft online.  It tells the model number but also lists the owner's name.  I think that I will need to blur the license number before I show that image to protect the owner's privacy.