Need help identifying this spiderling, sold as Brazilian Black tarantula.
Well untilnit gets to at least a juvenile stage when most start showing adult colors, its going to be pretty hard to determine. But then again, there are a lot of solid black tarantulas. Guess you will have to trust the person you bought it from.
Welcome to the forum @vanbrig3932! Congratulations on the nice looking T! @spottedbull David is correct. As it grows a bit more into adulthood and maybe after a few molts you will be able to tell if it’s truly a BBT or in fact something else entirely.
Best of luck and come back with updated pictures!