HarmonyCoin is Adopts the proof of work method and the proof of stake method.Initially, it can be mined by proof of work method, but it is converted to proof of stake method later.POS system for HMC holdings. If the quantity of HMC is small, POS system is generated less and the number of POS systemsBecause it is a hybrid method, POS dividend is generated for the amount held in HMC wallet.