BCH/BTC is a symbol showing the price of Bitcoin Cash (BCH) against Bitcoin (BTC), the most popular cryptocurrency out there, i.e. how much Bitcoin you need to buy one Bitcoin Cash.
Bitcoin Cash, or BCH, is a variety, or fork, of Bitcoin (BTC). The fork was created on the 1st of August, 2017, after an unresolved dispute in the miner communities regarding Bitcoin scaling.
Bitcoin (BTC) is a currency unit used within a payment system with the same name. In the Bitcoin environment, clients software runs on multiple computers working together within a single peer-to-peer network, which means every node of the network is independent and self-sufficient.
BTC is a decentralized currency issued by other users who have enough hardware and software resources to support it.
The BCH/BTC rate depends entirely on the supply and demand. The BCH/BTC price is determined by the popularity of Bitcoin and Bitcoin Cash, its fork.