I dont want my handle to have fake followers. The best you can do is create new twitter account, give it 50k followers and post it here so we can verify your service.
This guy has suggested you a very simple way proving that your followers are indeed real but you also need to provide proof and the simplest way of doing that is make an account post it here without the followers, then add the followers and we'll check on twitteraudit.
I really doubt they are but if you're sure they'd pass on twitter audit then doing this you're not losing anything. You'll be only adding the followers to your own account and you can sell the twitter account later to make profit.