Some time ago I put up a question on the SE network. I ended up writing an extensive answer myself and published it in the same question and on my blog. Later, I put a lot more thought into the topic and found additional results, which I did not publish yet.
I have since considered if that question might be usable as a topic for a bachelor thesis.
Disregarding the fact that I would need to convince a professor to accept an existing topic, does the publication of the question and some results in the past prevent this?