Exchange

An exchange is a marketplace that matches buyers and sellers of an asset and publishes the resulting prices. In cryptocurrency, exchanges such as Coinbase, Kraken, and Binance let customers trade bitcoin against fiat currencies and other assets, usually while holding customer funds in custody. The largest venues process billions of dollars of bitcoin volume on active days.

Why it matters

Exchanges are where bitcoin's price is discovered and where most people first acquire it, which makes them both the industry's front door and its most concentrated point of failure. The history is sobering. Mt. Gox, which once handled the large majority of global bitcoin trading, collapsed in 2014 after losing roughly 850,000 BTC, and FTX failed in 2022 with billions in customer funds misused. Those failures produced the industry's defining safety rule, not your keys, not your coins, and pushed surviving exchanges toward proof of reserves, regulation, and segregated custody.

An exchange account is a claim on an exchange, not bitcoin itself. Withdrawal to self custody is the step that converts counterparty risk into direct ownership.

In the gold vs bitcoin debate

Gold's market structure is older but similar in shape: most gold trades through dealers, futures exchanges, and the London over the counter market rather than as metal changing hands. Both assets therefore share a paradox, bearer instruments mostly traded as ledger entries at intermediaries. The difference is exit friction. Withdrawing bitcoin to self custody takes minutes and one network fee; taking delivery of allocated gold is slow, costly, and often impractical below institutional size.