Bitcoin Cash is a hard fork of Bitcoin with a protocol upgrade to fix on-chain capacity. It don't have the function of Segregated Witness (SegWit) . Bitcoin Cash (BCH) is released on 1st August 2017 as an upgraded version of the original Bitcoin Core software. The main upgrade is the increase in the block size limit from 1MB to 8MB. This effectively allows miners on the BCH chain to process up to 8 times more payments per second in comparison to Bitcoin. This makes for faster, cheaper transactions and a much smoother user experience.