Using
https://www.verifybitcoinmessage.com/ and my own electrum client it does verify.

As with anything, all we know is that someone has access to the private key of 1KHjCMDrFxXiDpFnkd3wEuG8oeDcFQvQkY
Remember, just because you are paranoid it does not mean people are not out to get you....
And welcome back KWH / mightybearingball
-Dave