As a Russian speaking person, I do not pay much attention on Bitcoin and bitcoin. Russian grammar does not have that kind of differences, and during English classes I dont remember that teacher put much attention on that kind of things (or same as you, "I have already forgotten about this").

When I write post, I try to concentrate more on tenses while doing Russian>English translation in my head.
After your topic, I think I would pay a bit more attention to Bitcoin/bitcoin, but frankly speaking, when I re-read my post, I wont click on edit button to correct this.