Bitcoin vs Bitcoin Cash: What's the Difference?

Summary: Bitcoin Cash (BCH) split from Bitcoin (BTC) in August 2017 after a long fight over how to scale. Both have a 21 million coin cap, the same mining algorithm and roughly ten-minute blocks. The difference is block size: Bitcoin Cash allows much bigger blocks so fees stay under a cent, while Bitcoin keeps blocks small and relies on second layers like Lightning. Bitcoin is far larger and more widely held; Bitcoin Cash is cheaper to spend.

• Bitcoin Cash is a hard fork of Bitcoin, so anyone holding BTC in 2017 received the same amount of BCH.
• BCH blocks can be up to 32 MB, compared with Bitcoin's roughly 1 MB base limit.
• BCH fees are usually a fraction of a cent; BTC fees rise sharply when the network is busy.
• Bitcoin dominates on security, liquidity and adoption; Bitcoin Cash competes on cheap payments.

Why Bitcoin and Bitcoin Cash Split

By 2017 Bitcoin's 1 MB blocks were filling up. Fees spiked and transactions sat waiting for hours. One camp wanted to raise the block size so more payments fit on the chain. The other wanted to keep blocks small, so ordinary people could keep running full nodes, and add capacity through upgrades like SegWit and off-chain networks.

No compromise held, and on August 1, 2017 the big-block side split off and created Bitcoin Cash. Both chains share the same history up to that block, which is why every BTC holder at the time received an equal amount of BCH. Bitcoin Cash later split again in 2018, when Bitcoin SV broke away.

Bitcoin vs Bitcoin Cash at a Glance

• Supply: both are capped at 21 million coins and both halve their block reward roughly every four years.
• Mining: both use SHA-256 proof of work, so the same machines can mine either coin.
• Block size: Bitcoin has a 1 MB base limit, stretched to about 4 MB of block weight with SegWit; Bitcoin Cash allows up to 32 MB and never adopted SegWit.
• Block time: about ten minutes on both.
• Scaling approach: Bitcoin scales with layers like Lightning; Bitcoin Cash scales on the main chain.
• Extras: Bitcoin Cash added native tokens, called CashTokens, in 2023.

Fees and Speed Compared

This is where most people feel the difference. Because Bitcoin Cash blocks have plenty of spare room, fees stay at a fraction of a cent and transactions rarely wait for space. Bitcoin's fees depend on demand: they can be well under a dollar on a quiet day and several dollars or more during busy periods, when a low-fee payment can take hours to confirm.

Block times are the same, so a first confirmation takes about ten minutes on either chain. Bitcoin users who need instant, cheap payments typically use the Lightning Network, which settles in seconds off the main chain.

Security, Adoption and Value

Bitcoin attracts the overwhelming majority of SHA-256 mining power, which makes it far more expensive to attack. It also has spot ETFs, deep exchange liquidity and a market value many times that of Bitcoin Cash. BCH has a smaller but committed community, steady merchant support in some regions and a reputation as one of the more practical coins for small payments.

Both are easy to buy. Major exchanges such as Coinbase list BTC and BCH side by side, but the addresses are not interchangeable. Sending BCH to a Bitcoin address, or the other way round, is one of the most common and costly mistakes, so double-check the network every time.

Bitcoin Cash vs Bitcoin: Which Should You Use?

• For long-term holding: Bitcoin, thanks to its security, liquidity and much wider acceptance.
• For cheap on-chain payments: Bitcoin Cash, where small transfers cost almost nothing.
• For fast Bitcoin payments: Lightning, if your wallet and the recipient support it.

Many people hold some of each. If you do, a multi-coin hardware wallet such as Tangem can keep both offline, as long as you choose the right network when sending.

Two Coins, One Shared History

Bitcoin and Bitcoin Cash started from the same code and the same ledger, then chose different answers to the same question. Bitcoin chose decentralization and layered scaling, while Bitcoin Cash chose bigger blocks and cheap on-chain payments. Neither choice is wrong; they just suit different uses.

Whichever you hold, you can put it to use and browse gift cards you can pay for with BTC or BCH.