NiceHash

Basics

• From their website (2-12-2019): "NiceHash was founded in 2014 and is now the world’s largest crypto-mining hash power broker. Our marketplace servs millions of cryptocurrency miners and buyers of hash power."
• It rents out miners to whoever wants to pay. Is used sometimes to do 51% attacks on coins with low hash rates. For instance Vertcoin on 2-12-2019.