Bitcoin Cash (BCH) is a cryptocurrency that was created in August 2017 as a fork of Bitcoin (BTC). It was developed to address Bitcoin's scalability issues by increasing the block size limit, allowing more transactions to be processed faster. BCH aims to be a more practical and efficient digital currency for everyday transactions, providing lower transaction fees and quicker confirmation times compared to Bitcoin. It retains many of the original features of Bitcoin but focuses on improving transaction speed and cost.