Bitcoin Cash (BCH) exists because of a fight. In August 2017, a faction of the Bitcoin community — convinced Satoshi's original vision of 'peer-to-peer electronic cash' was being strangled by a 1MB block size limit — hard-forked away from Bitcoin to create a chain with bigger blocks and cheaper, faster transactions.
What it does
BCH increased Bitcoin's block size (now up to 32MB, versus Bitcoin's effective 1-4MB with SegWit) so more transactions fit in each block, keeping fees low even during busy periods. It kept Bitcoin's proof-of-work mining and UTXO model largely intact, betting that scaling on-chain — rather than through layers like the Lightning Network — was the better long-term path for a currency people actually spend.
The chain has seen real, if modest, use for merchant payments and remittances in places where low fees matter more than deep liquidity or institutional polish. Projects like the SmartBCH sidechain and various point-of-sale integrations have tried to keep the 'digital cash' use case alive.
Bitcoin Cash has also forked itself — Bitcoin SV split off in 2018 in another dispute over block size and vision, a reminder that the 'true Bitcoin' argument tends to fracture rather than resolve.
Risks
BCH's core problem is one of relevance. Bitcoin has absorbed almost all the institutional attention, liquidity and narrative gravity in the 'digital gold' category, leaving BCH to compete on a use case — everyday payments — that stablecoins on faster, cheaper chains now serve better than either Bitcoin or its forks.
Mining security is a real concern: BCH's hash rate is a fraction of Bitcoin's, making it markedly cheaper to attack in theory, and it has suffered 51%-style reorg scares in the past. Liquidity and developer attention have also thinned over the years as capital concentrated into Bitcoin and Ethereum.
For traders, BCH is largely a legacy-brand momentum play now — it moves on Bitcoin's coattails and broader market cycles more than on independent fundamentals, which makes it a blunt instrument for anyone trying to bet specifically on payment-chain adoption.