LESSON 1 · NOTES
Why Bitcoin Has No Single Price
One second, three exchanges, three different numbers. Let’s look at where that comes from and why it doesn’t go away.
Three takeaways
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Price is not a property of the asset. It’s a fact about a specific trade in a specific place. The number in your app means only one thing: the last trade on this venue went through at that rate.
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An exchange is not a window onto a shared market. It’s a separate, closed market with its own participants. Only they set the price inside it. That’s why prices differ.
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The gap doesn’t disappear. Capturing it costs money and time. It’s the payment for getting over a barrier, not a market mistake.
1. What price really is
Bitcoin isn’t an object — it’s an entry in a ledger: a public database that records how many coins sit at which address. That entry has no price inside it. A price appears only at the moment two people agree to swap it for something else. They make those deals in different places, and each place has its own participants, its own money and its own demand. So “how much is bitcoin?” is the wrong question. The right one is: how much is bitcoin here, right now? An everyday analogy: a dollar at an airport currency booth and a dollar at a bank downtown are the same dollar, but the rate is different. Nobody is surprised, because it’s obvious: two different places where different people meet with their own money. Crypto works the same way, except there aren’t two places — there are several hundred.
2. Why exchanges show different prices
When you buy bitcoin on an exchange, you’re not buying it “on the market” — you’re buying it from another user of that same exchange. Every venue has its own list of orders, its own buyers and its own sellers. Exchanges are not connected to each other.
Two hundred exchanges are not one market with two hundred storefronts — they are two hundred independent markets.
3. Why the gap never closes to zero
It does close partly: thousands of people and bots keep eating into it, and that’s exactly why on bitcoin the difference is measured in fractions of a percent. But it never converges to zero, because capturing the gap isn’t free.
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Exchange fees — paid on both sides of the trade.
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Network fees — if the coin has to be moved between venues.
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Time — a transfer takes anywhere from a minute to an hour, and the price moves in the meantime.
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Capital — money has to be sitting in both places in advance.
As long as there are fees, delays and limits, there’s a gap inside which nobody finds it worth the trouble. That gap is the arbitrageur’s working field. Which gives a practical rule: the less liquid the coin, the fewer bots trade it and the harder it is to move, the wider the gap. On bitcoin the difference is hundredths of a percent; on a small coin it can be several percent.
Terms you’ll need later
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Ledger — The network’s public database recording how many coins sit at each address. There’s no price in it.
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Order book — The list of all current buy and sell orders on a single exchange. That is the “price” of that venue.
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Liquidity — How many orders are sitting in the book. The less there is, the more your trade moves the price.
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Spread — The difference between two prices. It can be within one order book (between buying and selling) or between different venues.
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Arbitrage — Earning on the price difference of the same asset in different places — without betting on where the market goes.
Check yourself
Why is the gap between exchanges smaller on bitcoin than on a small coin?
Because bitcoin has vastly more participants and bots constantly eating into that gap, and it’s easier to move between venues. The fewer people chasing it and the higher the barrier, the wider the gap stays.
Can the difference between exchanges disappear completely?
No. As long as closing it costs fees, time and locked-up capital, there’s always a zone where acting isn’t worth it.
What does the number you see in an exchange app mean?
Only that the last trade on that particular venue went through at that rate. It’s not “the price of bitcoin,” and it’s not necessarily the price you’ll buy at.
Next lesson: what an exchange looks like from the inside — and why what you see in the app and what actually happens are very different things. Trade breakdowns and what’s happening in the market — on our Telegram channel @arbiq_ai · t.me/arbiq_ai
This material is for educational purposes only and is not investment advice. You make all trading decisions on your own and at your own risk.