Is BBL legal in US?

Excuse me, could you possibly clarify something for me? I've been hearing about this digital currency called BBL and I'm wondering if it's actually legal to use or trade in the United States? I've done some research but I'm still a bit confused about the regulations surrounding it. Could you please help me understand if BBL is considered a legitimate and legal form of currency within the US jurisdiction? Thank you in advance for your assistance.