Greetings,
I work on some reposirories on BitBucket from my home and my work, with two differents computers.
On each one I set a different SSH key that I added on my account settings as "Home" and "Work", following the classic way to generate them.
Despite of these keys added to my BB profile, when I do commits from my work I appear as an "non registered" user on the project stream :

As you can see on the screenshot I can commit but my profile seems to be unknown.
I use the same workflow on GitHub without any problems.
Any idea? 