First you send your Bitcoin to deposit address and every hour for 50 hours you will receive 4% payment from your deposit amount. Example: You send 2 Bitcoins to your deposit address and every hour for 50 hours you will receive 0.08 BTC to your BTC address what will make 4 BTC return after 50 hours. This way in 50 hours you can double any BTC amount that you have sent to deposit address. Deposit is accepted after 3 confirmations![/b]