Bitcoin Cash (BCC)/BCH is a hard fork version of the original Bitcoin. This coin is similar to bitcoin in terms of protocol; Proof of Work (PoW) hashing SHA-256, a supply of 21,000,000, block time, and reward system are the same. However, two main differences are the block size limit; as of 08/2017, Bitcoin has a block size limit of 1 MB, while (BCC)/BCH proposes a block size of 8 MB. Additionally, (BCC)/BCH will adjust the difficulty after every 6 blocks instead of 2016 blocks like Bitcoin.
Bitcoin Cash is a proposal from the BTC mining pool and the Bitmain mining group to implement UAHF (User Activated Hard Fork) at 19:20 on 01/08 (Vietnam Time). They rejected the agreed consensus mechanism (also known as BIP-91 or SegWit2x) and decided to fork the original Bitcoin blockchain to create a new version called “Bitcoin Cash.” Bitcoin owners can claim Bitcoin Cash if they have the private key or store their Bitcoin on a service that can distribute (BCC)/BCH to customers.