These tokens called 'bitcoin' are worthless.
They are not related to bitcoin at all. Someone just named a senseless token 'bitcoin'. Probably to scam other people.

It is the same approach as with all of these shitforks (bitcoin cash, bitcoin gold, bitcoin shit, bitcoin XXX, etc...).
All of them have one in common: They are using the name of bitcoin to attract newcomers. That's their way of making money.

Keep away from any tokens / forkcoins which have 'bitcoin' in their name. There is only one bitcoin (BTC).
Anything else which uses the name of bitcoin is shady and should be avoided.