I was able to proof anything they asked for, so after a long struggle they let me withdraw and closed my Account.
Actually I could not show that I bought the SAME coins before I sent them to Bitfinex,
but I could proof that I bought 2014 much more coins(at a lower price) at another exchange, paying from my bankaccount.
Half year ago finex did not yet ask for Notar signed documents.
One possible reason for this ransomholding of users coins might also be,
all big exchanges now use blockanalysis for to check the origin.
And almost ALL coins had once been in the darknet, even if it had been 3years and 25 transactions before.
So almost NOBODY is safe , the red alert can be on on virtual everyone.
To me this looks like bitfinex is no more liquid.
Withdraw everything as long as you can...
Mr. relax can i pm you buddy, about the steps i should follow maybe you can give some usefull information