HashFlare was a cloud mining service provider that offered users the ability to mine various cryptocurrencies without the need to own and maintain physical mining hardware. The platform allowed customers to purchase hash rate contracts for different cryptocurrencies like Bitcoin, Ethereum, and others, supporting a range of mining algorithms. Users could select from predefined contract plans and benefit from features such as daily payouts and the ability to reinvest returns into additional hash power. However, as of the latest updates, HashFlare has discontinued its Bitcoin mining services due to market volatility and regulatory challenges.