A few years ago there was this hacker (don't remember who he was) that full disclosed a vulnerability in a given system, but to make sure nobody took credit for that, he created some kind of PGP key.
What I understood at the time is that he created a key to ensure he was the one who discovered it, but didn't disclosed who he was actually, just created some mechanism to be able to prove that he was the one who created the disclosure.
Ok. I get how algorithms and cryptography works. But I still don't understand how you can create a key to protect a given content disclosed in the web to prove you are the one who created it first! It is just words!
Is it really possible? What should be the process to ensure you can empirically prove it? Did I understood it correctly or I probably missed something regarding this case?
I hope this question is specific enough, basically it is just how to protect a content that you created in the web (a paragraph, a code, a word, etc.) and make sure you are the one who created it first, inside a given context.
With my knowledge I don't see how that is possible, but I am intrigued if there is a practical way to do it. Is there?