I'd hate your work to be stolen by someone that isn't you.
Your username is sure close to Martin Jan Musiol, but as @steemcleaners, I would like to see a selfie with a paper stating your username.
Your posts are technical, and you've already posted a few posts with pictures, but none stating your username in them.
You've posted public pictures from your Instagram account in three different posts:
https://steemit.com/running/@martinmusiol/this-year-at-stadtlauf-munich-2017-10-km-in-40min-next-year-better
https://steemit.com/introduceyourself/@martinmusiol/aloha-steemit-musiol-here
https://steemit.com/deutsch/@martinmusiol/musiol-stets-zu-ihren-diensten