Equihash algorithm is based on PoW principle and requires significant amount of core memory for hashing. On Equihash miners it is profitable to mine Zcash currency (goes beyong billions of dollars). Asics are also compatible with other cryptocurrencies: Bicoin Gold, ZenCash, Komodo and the others. Blockchain consists of blocks with data about money operations.
Mining blocks by the miners is awarded with cryptocurrencies. The system is fully anonimous, and cryptocoins’ course is constantly increasing.
Choose the miners which are profitable for you and purchase with profitable offers.