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Assuming "Bd officer" to be Bangladesh origin, I doubt how much they are actually investing in bitcoin because of their government's restrictions on crypto.
I am also a Bangladeshi citizen and I have also invested in Bitcoin. Many people have invested in bitcoins in our country keeping the privacy. Bitcoin is illegal in our country but we get all kinds of benefits. On the one hand, we have benefited a lot because we don't have to pay taxes to the government. I think it's better that Bitcoin is illegal in our country. We will invest with confidentiality. Bitcoin will be legalized in our country one day.