Bitcoin Cash is a P2P electronic cash system and a permissionless, decentralized cryptocurrency. It is hard fork of Bitcoin that took effect on August 2017. It increased the block size to 8MB, to help scale the underlying technology of Bitcoin. In November of 2018 BCH was hard forked again and split into Bitcoin SV and Bitcoin ABC. Bitcoin ABC became the dominant chain and took over the BCH ticker as it had more hashpower and majority of the nodes in the network. The supply maximum is the same as Bitcoin - 21 million.