Sort:  

You will get far better returns on your money by investing it in steem and powering up. I have Genesis contracts and you as the buyer carry all the risk for very low returns

And you are gambling on the ROI as well.

be more precise:
codes are used to get 3% discount - the extra (equal to 2.5% of the contract price) hashpower goes to the referrer
PS
talking about BTC contracts - better wait till 11/07 to see the cloud mining rewards after BTC halving

Coin Marketplace

STEEM 0.24
TRX 0.21
JST 0.036
BTC 97907.48
ETH 3354.28
USDT 1.00
SBD 3.35