MinerGate is a very established smart mining multipool that offers cloud mining contracts to be purchased. It boasts that you can always get the most profit while mining.
The reason behind this is because with MinerGate, it allows users to mine coins through a smart-mining option, or alternatively by choosing your favourite cryptocurrency manually.
One of the advantages of MinerGate though is that it has merged mining, which allows you to mine two different currencies at once, without losing hashrate for the main coin.
You can mine Bitcoins through cloud mining, and by buying hashing power, you can join the outsource mining.
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