Poloniex is a US-based cryptocurrency exchange that was founded in January 2014.
Update January 3, 2015: LTCGear started to collapse shortly after this review was published and has already missed several weekly payments.
BTC Trade was founded in Canada in 2013, and is being operated from China.
CloudHashing was founded in 2013, and claims to be the world’s largest Bitcoin Cloud Mining provider. Their mission statement is short but clear: “to ensure the mining profitability of our clients for years to come while the smaller miners become less competitive and less profitable.” For a fixed …
Bitcoin Cloud Services was founded at the start of this year, and provides customers with Bitcoin Cloud Mining contract