About Bitcoin Cash (BCH)

On July 20, 2017 Bitcoin Improvement Proposal (BIP) 91, aka Segregated Witness, activated. Some members of the bitcoin community felt that adopting BIP 91 without increasing the block-size limit would simply delay confronting the bitcoin scalability problem and that it favored people who wanted to treat bitcoin as a digital investment rather than as a transactional currency. The plan to do a hard fork was first announced by Bitmain. The project was originally referred to as UAHF: A contingency plan against UASF (BIP148) by Bitmain on their corporate blog, which the ASIC bitcoin mining hardware manufacturer would launch if BIP 148 (a User Activated Soft Fork) succeeded. Subsequently, developers took interest in the project.

The Bitcoin Cash name was originally proposed by Chinese mining pool ViaBTC.

Source: Wikipedia