It's not a rare domain name. It may have "BTC" in the middle, but what ruins it is the fact that it has an asterisk. What popular site can you list off the top of your head that has an asterisk in it's URL?
What's your price? If it's low enough I might offer on it. Emphasis on the "low".
I think it is NOT asterisk ,but the OP do not want to reveal the 5th letter/number of the domain name