The first time I heard about it I think was a forum post or a blog post or something, I don't even remember the specifics I just remember it being mentioned as a "digital currency" and I thought it was a game currency like WoW gold or something like that. Didn't have the context to understand its importance. Not long after that I heard more about it on a podcast I was listening too, the Cypherpunk'd podcast. What they were saying piqued my interest and I decided to look up more info about it, fell down the bitcoin wiki rabbit hole, emerged fully orange pilled.