I would throw a giveaway that this forum have never seen before. Of curse not with whole 10BTC, maybe 3 or 2. The rest I would utilize in a small idea of riddle - faucet.  Faucet with hard riddles, head breaking puzzles and confusing crosswords. In case something left I would store it as savings.

Investing your 10 btc in to hyip's are risky and you can only get none from the list.. all of them are risky..
But i like the 2 in the list yobit and ccex its better to me because its low risk and high profit if you are lucky to choose the best altcoin to hold for a long time..

If someone gives me 10 btc then I will surely hold it for halving as I don't want to invest somewhere which will make me to  loose everything.

I change my mind, if you gave me 10 btc, i'd return it back after investing on the projects like Waves or DAO. I do think these projects will have something better to lay in the future.
Onec I get to earn after few months, I'd make it 12btc. PM me if you intend to send the 10 btc 


holding the btc won't make you richer still as you would have to give back the 10 btc and that means you'll have to pay the interested. so you owe some.

yeah the first three are looks like to be cloudmining which are famously bad idea even if they are not ponzi which i don't know about these three.

4,5 are exchangers so it doesn't really mean anything investing in exchanger!

the rest is hype and gambling which means losing bitcoin only,.

I would take out 5 BTC and sell it on Local bitcoin then gamble 2.5 bitcoins and buy goods with the remaining.

Yeah 10 btc is really a big amount to hold especially for the normal users who are working hard to earn few bitcoins on regular basis and I would surely save it for future.

I would use it in 10 different companies with good background history

I'd probably invest it in an altcoin like RISE.

They are going to be like Lisk and Waves imo but nobody knows that yet.