Why will you be scared to tell them that you are a bitcoiner or are you not confident in what you do for a living. Abeg,if you are not confident with it,you should stop. Nowhere the matter won reach wey if investigation happen,wey you wouldn't be able to prove yourself.
There was a CBN circular last year or the year before that prohibited banks from facilitating crypto transactions on and off their platforms. Since then, Nigerian police changed the narrative that it is banned in Nigeria and anyone involved in it is going against the law. They usually arrest the citizen in question and use it as a means for extortion. I don't know if it's everywhere but around south, it's a norm.
Me and you know say before cryptocurrency start to exist,na so police dey behave. All the time them won give you wrong charge just to extort money from you. The bad ones go arrest you because them no say poor man no dey into crypto,and say you go fit bail yourself. Those police wey catch you no go fit carry you go court because them no say crypto no dey illegal but na money them want. Already we know how Nigeria police dey commit atrocities just go get money for the street.