Do you get 75 keys for every new character you create?

So I logged in to Borderlands 2 with my level 7 Krieg. I was given 75 golden keys. I later made a new character, an Axton, and after playing up to level 10, I logged out. Next time I logged in, I was informed that I had 150 keys… Is this normal?

I logged out and restarted Borderlands 2 again just now. I now have 225 keys. I am now going to stop talking, in case this is a glitch.