Bitcoin’s hard limit is easy to understand: there will always only be 21 million coins.
What’s hard to understand is that the marginal market is allowed to trade far more than 21 million coins in exposure, because most of that exposure is synthetic and cash-settled, and can be created or reduced in seconds.
That distinction has become Bitcoin’s core paradox over the past year.
Scarcity is a property of ownership, while price is a property of the microstructure of the market that dominates the next aggressive order. When derivatives volume and leveraged positioning become the dominant arena, Bitcoin can trade as a tight-supply asset and at the same time as an asset with effectively elastic exposure.
21 million coins, but a much larger marginal market
Spot is the only place where a transaction necessarily moves actual BTC from one owner to another.
Perpetual and dated futures do not yield coins, but they do create a second market that can grow larger, faster and more reflexive than the spot market. Perps are designed to track spot through a funding mechanism and can be traded with leverage, meaning a relatively small amount of collateral can control a much larger notional position. This combination tends to attract activity in derivatives when traders want speed, leverage, short positioning and capital efficiency.
Price discovery is simply where the next meaningful market order lands. When the most urgency lies with the perpetrators, the path of least resistance is set there, even if long-term holders never touch leverage and even if the underlying supply is fixed. In that regime, moves are often driven by changes in positioning: liquidations, forced derisking, hedging flows and the rapid repricing of leverage. These flows can overwhelm the much slower process of spot accumulation, because the marginal actor does not choose whether to buy coins, but whether to increase or decrease exposure.
This is also why visible order book support is a weaker concept than it looks on a chart. Offers shown may be realistic, but are conditional. They can be expanded, layered, renewed, or simply outpaced by the volume coming out of the larger derivative complex. Order books are records of resting intentions, not execution guarantees.
What the data shows
The Binance BTC/USDT perpetual futures to spot volume ratio is the cleanest starting point because it quantifies where activity is concentrated.
On February 3, the perpetual-to-spot volume ratio was 7.87, with $23.51 billion in perpetual volume versus $2.99 billion in the spot market, while BTC was trading around $75,770. On February 5, the ratio was still 6.12, with volume of $15.97 billion versus cash volume of $2.61 billion and a price of almost $69,700.
The proportions are important because they are not a small deviation; they describe a market where the dominant source of revenue is a short-term financing market. In this setup, the next step is more likely to be determined by the repricing of the exposure rather than incremental spot purchases.
The aggregate order book liquidity delta adds a second layer: not just where volume is traded, but where liquidity accumulates near price. CoinGlass defines depth delta as the imbalance between bids and asks within a certain range, here ±1% around the current price, which is a way of summarizing whether the visible book has many bids or many bids.
The largest footprint appears on the derivatives side, right as the market entered the downturn window. The futures liquidity delta printed +$297.75 million as of January 31 at 2:00 PM, while BTC was around $82,767. Spot later showed +$95.32 million, about $78,893, at 6 p.m. Even at 2 PM on February 5, the spot delta still showed +$36.66 million, while BTC was close to $69,486.
This data shows a market where spot bidding existed and grew at times, but the price continued to fall. Once you accept the hierarchy in which derivatives are the dominant class, this is no longer a contradiction. Displayed liquidity near the spot market may improve, while the larger derivatives market continues to force repricing through leverage reduction, short printing or hedging. When perpetrators dominate sales, the marginal salesperson is not a real person who has lost his conviction, but merely a manager who manages positions.
Now add the third channel that investors often consider the definitive spot proxy: US spot Bitcoin ETFs. The flow sequence we’ve seen this past week looks more like a tug-of-war than a handlebar aimed at the cliff.
The heavy outflows reached about -$708.7 million on January 21, then about -$817.8 million on January 29, and then about -$509.7 million on January 30. February 2 turned sharply positive at around +$561.8 million, then returned to -$272.0 million on February 3 and -$544.9 million on February 4.
These types of public flow figures are widely tracked through aggregators like Farside and are often referenced in market coverage, but they fail to map one-to-one with the intraday price when the derivatives platform determines the marginal trade.
It’s also worth being precise about what an ETF flow is and isn’t. Creations and redemptions are made through authorized participants. Depending on the product and regulatory permissions, these processes can be cash or in-kind, changing how directly ETF activity translates into spot market transactions in BTC.
In mid-2025, the SEC approved orders allowing in-kind creations and redemptions for crypto ETPs, which is specifically about allowing authorized participants to create or redeem shares using the underlying crypto instead of just cash, bringing the operating structure closer to other commodity ETPs. (SEC) Even with that structure, ETF flows still involve derivative positioning, dealer hedging and stock market liquidity, which can dominate short-horizon price discovery.
Finally, exchange reserve data anchors this abstract data into something more tangible: the amount of BTC held on exchanges, which is indicative of immediately tradable inventory.
From January 15 to February 5, total BTC reserves increased by 29,048 BTC, an increase of 1.067%, to just over 2.75 million BTC.
This is important because it separates two ideas that are often mixed together.
Bitcoin can be scarce in the overall supply and still feel well supplied at the time of the trade if the exchange stock enters a period of risk. ETF inflows may be positive, yet tradable float may increase through deposits, government bond moves, or repositioning by large holders. And even if the tradable float shrinks, derivatives can still increase volatility because exposure can be added or removed faster than coins can move.
A scarcity model that matches the way Bitcoin trades
A useful way to reconcile all of this is to think of Bitcoin scarcity as a stack of time horizons rather than a single number.
The slowest layer contains the protocol offering, which is fixed by design. That is the layer that describes the limit of 21 million.
In the middle layer is the tradable float, which can realistically enter the market without friction. Exchange reserves are not the best measure for this, but they are directionally useful because they measure coins that are already on a platform built for fast transactions.
On the fast layer is the synthetic exposure: perpetrators, dated futures and options. This layer can expand or contract extremely quickly because it is limited by collateral and risk limits, and not by currency movements. When activity concentrates here, much of the market expresses its views through leverage and hedging, not through acquiring coins.
The final layer is the marginal trade itself: the next forced purchase or sale that takes place via the most active platform. The perpetual-to-spot volume ratios that were between roughly 6 and 8, combined with the larger liquidity delta on futures, show a market where that marginal trading was in derivatives, not spot.
That framework tells us that scarcity is real, but does not guarantee daily shortages. The market can trade scarce assets through abundant exposure, and the location with the most urgent flow tends to set the next price.
Therefore, we should view ETF flows, FX reserves and derivatives dominance as three separate lenses that may disagree in the short term. When they are aligned, movements tend to be cleaner. When they diverge, you can see exactly what the charts show: bids appear, stories fly, and the price is still bleeding because the marginal market is elsewhere.