There is no legit HYIP or ponzi site at all, they are fraudulent and will just end up scamming and ripping off investors. Anyways minutebtc is already a scam, I lost my 0.01 BTC there 
You must have invested way too late theres a new site called avabitcoin that has very similar parameters to the minutebtc so it may last like 100 days just like minute btc did. I made a deposit there only time will tell i guess.