StrongHands™ (SHND) claims to be one of the first cryptocurrencies to introduce a combined proof-of-stake/proof-of-work minting system. The project builds upon Bitcoin by reportedly introducing energy efficiency, a new security/minting model, and adaptive responses to rapid changes in network computation power. StrongHands™ reportedly secures the network by providing 250k pr/block reward of the coins that are held by miners after 30 days.