suggest trusted site . thanks
i recommend to invest your 1 btc into a trading site and trade it for altcoins
so you would not get scam in a ponzi site
same here1 i highly suggest to invest it to trusted trading sites. we cannot assure you that there will be no risks on trading sites but you can control the risks if you have enough knowledge on the coins you are going to purchase to trade it. study about trading first before entering it.
to do a trade coin we must be smart in choosing, because if the wrong ad choose not profit you get, but instead the loss you get
in addition to trade, investment in altcoin or ICO, it is also a good choice. My experience the investment in ICO, always get at least two-fold, and you should be smart enough also choose a nice coin, and not potentially be a scam.