Since from the start, Bitcoin' s Difficulty has recorded a very few and much of the time consecutive month to month increases, especially from late November. An application- specific integrated circuit ( ASIC / ˈ eɪ s ɪ k / ) is an integrated circuit ( IC) customized for a particular use, rather than intended for general- purpose use. For example, a chip designed to run in a digital voice recorder or a high- efficiency bitcoin miner is an ASIC. Application- specific standard products ( ASSPs) are intermediate between ASICs and industry standard. Apr 19, · In the past, you didn' t need a bitcoin miner hardware to mine bitcoins and earn a decent income.