Daily notional volume (2024 averages)
A perpetual futures contract is a bet between two traders — one long, one short. There's no actual Bitcoin changing hands. Just stablecoins flowing between two sides, with a protocol in the middle taking its cut.
Drag the price slider. Watch the liquid flow between the two sides. Switch the oracle — the plumbing is identical.
Two sides. One long, one short. Their collateral rises and falls inversely. Every dollar gained by one is lost by the other. Zero sum.
The channel between them. It routes value, enforces rules, and extracts fees from every flow. It's a toll bridge, not a pipe.
The external price signal. Change it from BTC to gold and the system behaves identically — the engine doesn't know what it's pricing.
Same engine. Now add leverage. At 1x, a 10% price move shifts 10% of your collateral. At 10x, that same move shifts 100% — your side drains completely. That's a liquidation.
Crank both sides to 10x. Drag the price. Watch how fast it drains. The red dashed line is your liquidation threshold — cross it and you're wiped.
It doesn't change the mechanism. It changes the sensitivity. Higher leverage means the liquidation line is closer to the surface — there's less room before you're wiped out.
A $10,000 position at 10x has $100,000 in notional exposure. Fees are charged on notional, not collateral. More leverage = more fees extracted per dollar deposited.
10x long on BTC at $71,000. Watch what a 9% drop does.
Position opened. $10,000 collateral at 10x.
5x short on BTC at $71,000. A rally begins.
Short opened. $10,000 collateral at 5x.
5x long on BTC. Price rises 10%. Trader increases to 10x.
5x long opened. $10,000 collateral.
Without an expiry date, there's nothing to force the perp price back toward the real-world spot price. The funding rate is the solution: a payment that flows between longs and shorts every 8 hours, automatically correcting any imbalance.
Longs dominate. Longs pay shorts +0.050% every 8 hours, compensating the minority side. This discourages new longs and attracts new shorts — gradually pushing the perp price back toward spot.
Funding rates are quoted per 8-hour period. A rate of +0.01% per 8h = ~10.95% APY. During volatile markets, funding can spike to 0.1% per 8h (+109% APY) — making it very expensive to hold the dominant position and very profitable to be the counterparty.
Two prices matter in a perp market. The mark price is what you actually trade at. The index price is the real-world spot price. When they diverge, funding corrects it.
Mark trades above index by 1.5%. Funding turns positive — longs pay shorts. Over 16 hours, the premium gets priced out.
Perp price rises above the real spot price.
Liquidations are calculated against the mark price, not the index. A single exchange can't pump their price and trigger mass liquidations — the mark is aggregated across many sources.
“I think the price goes up.”
The largest layer. Directional bets based on conviction, analysis, or vibes. They provide the energy that makes the market move. They also provide most of the losses.
“I already own the asset. I'm protecting my position.”
A miner locking in today's price. A fund hedging overnight risk. They go short not because they're bearish — but because they're already long in the real world. The perp is insurance, not a bet.
“I don't care about direction. I care about flow.”
A thin layer on both sides at once. They quote prices on both sides and earn the spread between them. Without market makers, the market would be nearly empty.
“The perp price is wrong. I'm going to fix it and get paid.”
When the perp drifts from spot, the arb trades the gap closed. They're the reason the funding rate mechanism actually works in practice. The invisible hand that keeps the engine calibrated.
The speculator provides the energy. Everyone else extracts it.
If you're reading this guide, you would be the speculator.
That's not a warning. It's information. The market needs speculators — without them, hedgers can't hedge and market makers can't earn. But knowing where you sit in the food chain is the difference between participating and being consumed.
Buy 1 BTC spot. Short 1 BTC perp. Price goes up? Spot gains, perp loses — net zero. Price goes down? Spot loses, perp gains — net zero. But if funding is positive, you collect the funding rate on your short. You're earning yield on nothing.
This is how hedge funds use perps. Not to bet on price. To harvest yield.
Long spot + short perp = zero directional exposure. Funding rate flows from longs to shorts (when positive). At 0.01% per 8h, that's ~11% APY on a delta-neutral position.
Funding can flip negative. Your yield becomes a cost. Set funding to −0.01% and watch the drip reverse. The basis can also narrow — unwinding the trade at a loss.
The carry trade is one of the largest sources of perp volume. Institutional capital enters not to speculate but to run this strategy. The speculator provides the funding. The carry trader harvests it.
Same engine. Different oracle. That’s all that changes.
Every machine in this series
is live on Base. Right now.
The engine is built.
The rails are live.
The only question is
what you plug into it.