Well I thank you very much for clarifying this. My initial thought remains you are factoring Bitcoin receivables. It is also very likely that you are paying USD for them. This explains the need to hedge the currency risk by borrowing BTC and the need for uneven amounts of BTC. It is a perfectly legitimate and legal business provided that the underlying receivable is for something that is legal. I must admit that because of the very high return Silk Road did come to mind; however given how small the Bitcoin market is and the fact that it is not that easy to short BTC in order to hedge this, I can see how you can pay these high returns even if the underlying receivable is for something that is perfectly legal.