With regards to huge giveaways, I'm very confident that it will be a 99% scam. Nothing on earth that will return the investment to x2 without hard wok. Big money should be put to safety project that can earn real x2 or x5 in a matter of time. Bitcoin is real gem that may increase tremendously once great bull will happen. But because there are people who wants to earn big in a short time, scammer will take advantage the situation. Dyor is recommended at all times.