I've always wondered where the line is drawn for insider trading. What is material non-public Information?

Say you find easily calculable mathematical solutions that break the security of crypto and you dump all your coins because you know they'll be worthless once you publish your research/algorithm.

Is that insider trading? Or would you be in the clear because you derived your algorithm from already public information that everyone else already had too?

Does the time scale matter? If you solve, dump, wait a few years, then publish, is it no longer insider trading?