What happens to tokens that will not be sold?
Normally they should be burnt. I don't like the story where devs say that use it for better adoption and stuff like that. It's not fair I think.
The tokens are created dynamically during the ICO, so the maximum supply is 200,000,000 DTM but only if the hard cap is reached. So there will be no need to burn any unsold tokens because they were never created.