Bitcoin Cash bch

Bitcoin Cash (BCH) is a permissionless, proof-of-work blockchain and cryptocurrency built around the idea of peer-to-peer electronic cash. It split from the Bitcoin blockchain on August 1, 2017 at block 478558 after a long-running dispute about how to scale Bitcoin: Bitcoin Cash supporters favored preserving practical on-chain payments by allowing larger blocks, while the other chain emphasized smaller blocks and a settlement-layer approach. BCH uses Bitcoin-style transactions, SHA-256 mining, and a public blockchain, but follows its own consensus rules after the split.

Its goal is to let people send value directly over the internet without a bank or payment processor. The BCH design prioritizes capacity for ordinary payments, low fees, permissionless access, and decentralized development. BCH is also a platform for scripts and native CashTokens, which support fungible and non-fungible tokens on the same proof-of-work-secured chain.

Bitcoin Cash addresses the trade-off between decentralization, block capacity, and everyday usability that drove the 2017 Bitcoin scaling debate. When block space is scarce, transactions compete for inclusion and fees can rise, making small peer-to-peer payments less practical. BCH's answer is to scale the base layer with larger blocks so more transactions can be included on-chain, rather than treating the base chain primarily as a settlement layer.

The project also responds to dependence on intermediaries in conventional payments. A user can hold keys, broadcast a transaction to a global peer-to-peer network, and transact without opening an account or asking a central operator for permission. This does not remove exchange, wallet, mining, regulatory, or custody risks, and confirmations are not literally instantaneous; the design instead aims for quick broadcast and reliable confirmation at low cost.

BCH uses the Bitcoin transaction model: wallets control private keys, transactions spend previously unspent outputs, and digital signatures authorize transfers to new outputs. Transactions are broadcast to nodes, which validate them against consensus rules and relay them. Miners gather valid transactions into blocks and compete using SHA-256 proof of work. Each block commits to the prior block, creating a chain whose history is costly to rewrite; nodes reject invalid transactions and blocks.

The key scaling distinction is block capacity. Bitcoin Cash adopted larger block limits than the pre-fork Bitcoin chain, allowing more transactions in each block and supporting its on-chain cash objective. Capacity has continued to evolve through consensus upgrades; the official BCH site says CashTokens added native fungible and non-fungible token support in 2023 and the Adaptive Blocksize Limit Algorithm (ABLA) activated in 2024 to let capacity adjust dynamically with demand. Larger blocks can improve payment capacity, but they also increase bandwidth, storage, and validation requirements, so BCH's scaling choice involves decentralization and operational trade-offs.

Mining follows proof of work and targets roughly ten-minute block intervals, as in Bitcoin's family of protocols. BCH has a fixed maximum supply of 21 million BCH under its issuance rules. Multiple independent node implementations and development teams participate in the network, so no single company is the protocol's central operator.