There is no crypto market. There are thousands of separate venues, each keeping its own book of buyers and sellers, each arriving at its own price for the same asset at the same second — and a thin layer of traders whose entire job is to notice when those prices drift apart and drag them back together. What you see quoted as "the price of Bitcoin" is an average of that argument, sampled a moment ago.
Understanding that one fact explains most of what confuses newcomers: why two sites disagree by a few dollars, why a large order gets a worse rate than a small one, why a coin with a huge market capitalisation can still be almost impossible to sell, and why a quote you were given ninety seconds ago is no longer the quote you can have.
A price is not a fact about an asset. It is the last thing two people agreed on, in one place, and it expires.
Where a price actually comes from
Almost every venue works from an order book: a list of the prices people are willing to buy at (bids) and the prices people are willing to sell at (asks). The highest bid and the lowest ask sit facing each other with a small gap between them. That gap is the spread, and the midpoint of it is what most sites display as "the price".
Nothing happens until someone crosses the gap. When a buyer accepts the lowest ask, a trade prints, that ask disappears, and the next-lowest ask becomes the new best price. Do that a hundred times in a row with a large order and you have walked up the book — each successive slice filled a little worse than the last. The difference between the price you saw and the average price you got is slippage, and it is not a fee anyone charged you. It is the shape of the book.
Standing in that gap all day are market makers, who quote both a bid and an ask continuously and earn the spread for the service. They are the reason a price exists at three in the morning on a public holiday. When they withdraw — during a violent move, an outage, or a regulatory shock — the book thins out, the spread widens, and the same order that cost nothing to fill yesterday moves the price today.
Decentralised venues replace the book with a pool of two assets and a formula, but the economics rhyme: the bigger your trade relative to the pool, the worse your price. In both designs, size is the variable that matters.
Liquidity is the only number that protects you
Liquidity is a plain idea wrapped in an intimidating word: how much can trade before the price moves. A liquid market absorbs a large order and barely notices. An illiquid one lurches. It is the difference between selling a common car and selling a rare one — both have a market value, only one of them can be turned into money this afternoon at that value.
You can read liquidity without any tools. Look at the spread as a percentage of the price: tight means competition, wide means nobody wants to be caught holding this. Look at real trading volume across several days, not one. Look at how many independent venues quote the asset at all — one venue is a single point of failure, and if it delists the asset, the price you saw stops being available to you.
Market capitalisation tells you how big something looks. Liquidity tells you how much of it you can actually leave with.
This is also why the same swap can quote differently at two providers within a minute. Each is sourcing from a different mix of venues with a different depth. We publish the measured version of that spread — sampled repeatedly across providers on the same pair — in the Monivo Swap Rate Index, and the per-provider view sits in the swap provider comparison.
What market capitalisation does and does not mean
Market cap is circulating supply multiplied by the last traded price. That is the whole calculation. It is a useful way to rank assets by scale, and it is routinely misread as something it is not.
It is not money invested. If the last hundred coins of a million-coin supply traded at ten dollars, the market cap reads ten million while perhaps a thousand dollars changed hands. It is not money that can be withdrawn either: selling the whole supply into the book would exhaust the bids long before the last coin found a buyer at the quoted price.
Two related figures are worth checking beside it. Circulating supply excludes coins locked in vesting schedules or treasuries; fully diluted valuation includes them, and the gap between the two tells you how much future supply is scheduled to arrive. A project whose diluted figure is several times its market cap has committed to selling a lot of coins to somebody, eventually.
Where the number is genuinely useful is as a sanity filter. A newly launched asset with a valuation comparable to Ethereum is making a claim about its future that its liquidity, usage and history are unlikely to support.
Why crypto moves the way it does
Crypto trades every hour of every day, with no opening bell, no closing auction and no circuit breakers to pause a collapse. Equities markets close, and closing gives everyone a night to think. Crypto never gives you that, so news lands directly into a live book at three in the morning, and stops are triggered while their owners sleep.
Leverage amplifies the rest. When positions are financed with borrowed money, liquidations become forced selling into an already falling market, which triggers more liquidations. That mechanism, not sentiment, is why a move sometimes accelerates far past where the news alone would justify. The regulator's own writing on volatility describes the same dynamic in traditional markets; crypto simply removes the pauses.
Cycles exist, and their timing does not. Long expansions followed by deep contractions are well documented across this asset class's short history, and research bodies such as the Bank for International Settlements publish work on how those cycles interact with the wider financial system. Nobody — including us — can tell you where in a cycle you currently are. Anyone who claims to is selling something.
Reading market data without being misled
Most numbers on a crypto dashboard are aggregated from venues that report their own activity. Volume is the softest of them: it can be inflated by trades a venue makes with itself, and a suspiciously large volume figure on an asset with a thin book is a contradiction worth taking seriously rather than a bullish signal.
On-chain data measures something different and complementary. Transfers, active addresses and exchange balances describe what is happening to coins, not what is happening to prices. Both views can be true at once — an asset can be heavily traded and barely used, or widely used and barely traded — and the interesting questions live in the gap between them.
When you compare a price across sites, check what you are comparing: a mid-price you cannot trade at, an index average across venues, or an executable quote for your actual size. Only the last one is a price you can have. That is what a swap quote is, and why it carries an expiry — see the exchange rates guide for how a quote is built and what makes it move between the moment you see it and the moment you accept it.
What to do with all of this
Market structure is not trivia. It changes concrete decisions. Trade in sizes the book can absorb, and split a large order rather than dropping it in one piece. Prefer assets quoted by several independent venues, because one venue's delisting should not be able to strand you. Compare an executable rate for your amount, not a headline price. And treat a widening spread as information: it is the market telling you that certainty just got more expensive.
Structure decides what a decision costs; the decisions themselves belong to the strategy guide, and the ways those decisions go wrong belong to the risk guide. If you are still choosing where the coins will live afterwards, start with the wallet guide — a good rate into an address you do not control is not a good outcome.
Everyone watches the price. The people who keep their money watch the depth underneath it.
Where these definitions come from
The structural definitions on this page are standard and independently documented. If you want the neutral versions, read them at the source rather than taking ours: order books, market liquidity and market capitalisation. For investor-facing material on volatility and how to evaluate what you are being offered, the SEC's Investor.gov is the plainest public source, and the BIS publishes ongoing research on crypto market structure.
Our own measurements — provider spreads sampled repeatedly on the same pairs — are published with their methodology and limitations in the Swap Rate Index, and the reuse terms for journalists and researchers are in the press kit.