Yes, bc[dot]game is the official link of BC, but if it's inaccessible for you, they have plenty of mirror link that you can check its availability and/or the authenticity of other sites that poses as mirror on
I do appreciate the help and the guide, already secured my deposit awhile ago and was just trying to double check and yeah for me it was bc48game(dot)com. Was just freaking out that I did a manual signup for a site that wasn't the real one. Really thanks for this.