Everything I said still applies, I don't know where you are @squatter but in countries from Europe which is where I am from, basically you are a criminal by default if you can't clearly prove the origin of the funds.

So no, you can't put any relevant amount worth of cash into a bank account without receipts that prove it was earned legally. You are delusional if you think you could get away with putting 5 figures worth of cash inside a bank account and not have the IRS equivalent here knocking on your door asking where that came from, and "I just made this from playing in the casino" without any receipts and clear trace back to the origin will not cut it.

You can't also put crypto earnings of any kind in an account without having full history of your earnings and being able to trace and report every satoshi movement including the movements inside exchanges.

About dead exchanges, unless you made a daily backup of your trades, chances are you would be unlucky and not have an updated trading history saved because exchanges die randomly.

It is only fair to be cautious and ask for precedents, and see what authorities would demand if you tried to cash out amounts that come from mixed origin, dead exchange origin, or signature campaign origin. The only clear and easy way is the usual one: buying them in an exchange where you are verified and selling them again: capital gains tax and you present the trades which are done in your name. Everything else is a grey area which im not willing to cross without having clear precedents because I don't want to get my bitcoins counterfeited.


In theory yes, but the problem is, if you've been doing this for years and never reported anything... once you do want to cash out to buy a house, what can one expect?