The Contract Algorithm Scythe: What Makes Already Fragile Shitcoins Even More Fragile?

In just over ten minutes, $H plummeted from 0.865 to 0.052, a drop of 93.9%, causing widespread liquidation of long positions. Everyone was blaming market manipulators, hackers, and exchange risk control—but this "needle" had no effect on BTC, yet on $H, it triggered an avalanche. The fatal flaw wasn't the single sell order, but rather four interconnected weaknesses of this volatile coin: inherently higher MMR, funding fees eroding your principal daily, a thin order book where a single market order could breach it, and a collapse in the spot market followed by a drop in the mark price. These four weaknesses combined created the irreversible plunge. With the same leverage and the same volatility, those holding volatile coins always perish faster, earlier, and more severely—this article will explain the mechanisms behind that "needle" layer by layer. Let's examine the $H crash to see why volatile coins are more easily liquidated. In the early morning hours, a small-cap contract on a leading exchange—Humanity Protocol ($H)—was still trading sideways around 0.86. It had just experienced a frenzied surge, with screenshots of people "getting on board" flooding the community, and the funding rate for perpetual contracts being pushed to extremely high levels by the crowd of longs. Everyone was going long, and no one saw anything wrong. In the next ten minutes, the price plummeted from a high of 0.865 to 0.052, a drop of 93.9%. Contract volume surged to nearly $700 million, but these buy orders weren't from retail investors buying the dip; they were market orders triggered by a series of forced liquidations. When longs opened their apps in the morning, they only saw a red "Liquidated" label and a message: "Your marked price has reached the liquidation price." Many people's first reaction was: "Market manipulators are dumping the price and maliciously liquidating my positions." But that statement is only half true. Market manipulation does exist, but the same lower shadow on BTC leaves most people unscathed, while on $H it can trigger a cascading liquidation avalanche. The fatal flaw isn't the sell order or the price spike, but rather the inherent structural fragility of $H itself. Looking back at the $H liquidation, the question boils down to this: why, with the same leverage and volatility, are holders of volatile cryptocurrencies always more easily, earlier, and more severely liquidated? That single event was merely the result; the trigger, or accomplice, lies in four nested factors: higher maintenance margins, more aggressive funding fees, thinner liquidity, and the resonance of these three factors under the mark-price mechanism. Before delving into the nature and structure of $H, let's clarify the principle of liquidation. Because all the vulnerabilities ultimately boil down to these parameters. For the average person, opening a perpetual contract position is just a few clicks, but the backend system revolves around these four parameters.Initial Margin Ratio (IMR): The percentage of principal you must lock in at the moment you open a position; it's equal to the reciprocal of leverage. For 10x leverage, the IMR is 10%; for 2x leverage, the IMR is 50%. Maintenance Margin Ratio (MMR): The minimum percentage of your account equity relative to its notional value during the position's lifespan. If equity falls below this line, the system immediately takes over and liquidates your position. MMR is always less than IMR; otherwise, your position would be liquidated the moment you open it. Liquidation Price (Clearance Price): The price at which the system actually liquidates the position. It's below the opening price for long positions and above for short positions. Bankruptcy Price: The price at which your margin is completely wiped out, and your equity becomes zero. The liquidation price always precedes the bankruptcy price because the exchange needs to provide a buffer of MMR to take over before your equity truly reaches zero, preventing "margin call"—losses exceeding the principal that require a bailout from the insurance fund or the counterparty. The liquidation price for a long position can be simplified as: Liquidation Price (Long) = Opening Price × (1 − IMR + MMR). The logic is: your principal equals "opening price × IMR". Every price drop eats away a portion of your principal, until it's wiped out – that's the bankruptcy price. However, the system intervenes when you still have MMR left, so the liquidation price is significantly higher than the bankruptcy price. The higher your MMR, the larger this gap, and the closer the liquidation price is to the opening price, the easier it is for you to be liquidated. Another crucial detail: liquidation isn't triggered by the latest transaction price, but by the "mark price". The mark price is typically derived by weighting the index prices of multiple spot exchanges and smoothing it with funding fee basis, not the transaction price of a single order book. This design is intended to protect users – preventing someone from using an abnormally large order to instantly crash the order book and maliciously trigger someone else's liquidation. Remember this, and this is precisely where $H's problem lies: it completely disables this supposed protective barrier, even accelerating liquidation. How low are the maintenance margin rates for major cryptocurrencies? For BTC and ETH perpetual contracts, the minimum margin requirement (MMR) for small positions typically starts at 0.4% to 0.5%, and even for large positions with a nominal value of tens of millions of dollars, the maximum MMR is only 10% to 15%. Cryptocurrencies with volatile price movements are different. Exchanges set much higher MMR requirements for contracts with small market capitalization and low liquidity from the outset—commonly 1% or 2.5%, and even higher for long-tail assets at 5%. The reason is simple: exchanges know that if such a coin experiences a crisis, there won't be enough buying pressure to liquidate the positions, so they have to use higher margin requirements to create a safety cushion for themselves. This difference may seem like only a fraction of a percentage point, but when applied to the liquidation formula, the difference is significant. Imagine two people using 10x leverage to go long, with the opening price normalized to 100. Using a BTC MMR of 0.4%, the liquidation price would be 100 × (1 − 0.1 + 0.004) = 90.4. The price would need to drop by 9.6% to trigger liquidation.For this type of volatile coin (H), the MMR is set at 2.5%: the forced liquidation price = 100 × (1 − 0.1 + 0.025) = 92.5. A price drop of just 7.5% will trigger liquidation. With the same leverage, holders of volatile coins inherently have two percentage points less margin for error. And this is just the appetizer—exchanges generally limit the maximum leverage for volatile coins and use steep tiered MMR: a slightly larger nominal position value jumps to a higher MMR tier. How small is this "slight"? The lowest tier (the most favorable MMR tier) for mainstream coins is usually $50,000, while the lowest tier for high-risk volatile coins is often only two or three thousand dollars—if your position just exceeds two or three thousand USD, the MMR jumps to a higher tier, and your available leverage is reduced. In other words, if you want to heavily invest in a volatile coin, the system will use a tiered mechanism to forcibly raise your MMR and lower your leverage. Essentially, it's telling you: this asset is too risky, and you can't comfortably increase leverage. A high MMR is only the first layer. Above that, funding fees continue to deduct from your principal. Let's go back to before the crash. $H surged, with extremely crowded positions, pushing funding rates to extremely high levels. Many people don't truly understand the damaging logic of funding fees: it's not a transaction fee, nor does it change MMR—it deducts from your wallet balance, which is your margin principal. As your principal shrinks, the liquidation price moves towards the opening price. Each settlement (in extreme market conditions, exchanges may shorten 8 hours to 4 hours or even 1 hour), the funding fee you pay is: Funding Fee = Notional Value × Funding Rate. If you use 10x leverage, with a notional value of $30,000 and a principal of $3,000, at a 0.3% rate, the funding fee is $90 per transaction, $270 three times a day, accounting for 9% of your principal. This means—even if the price doesn't move, your liquidation price will visibly climb towards the opening price. Do the math. This 10x leveraged position has a safety cushion of only $2250, with funding fees eroding it by $270 daily. By the third day, the safety cushion is already more than a third gone; what would normally be a 7.5% drop triggers liquidation, now it only takes less than a 5% drop. On the seventh day, a slight price fluctuation of just over 1% triggers liquidation. At this rate, in about eight days, even if the price remains flat, the funding fees alone will be enough to wipe out your entire safety cushion, forcing liquidation. And this attrition only applies to isolated margin trading. If you use cross margin trading, it's even more insidious. With cross margin trading, funding fees deduct from your entire account's wallet balance. The high funding fees of a volatile coin like $H not only erode its own safety cushion but also drain the ammunition in your account that was originally intended to support BTC and ETH. If the market suddenly moves, it could drag your entire account down. Even more coincidentally, the trigger for that "sudden move" often lies in the very second of funding fee settlement.Funding fees are charged based on a snapshot of holdings at the moment of settlement; whoever holds the position at that exact second pays. Therefore, on cryptocurrencies with high funding fees, many retail investors and quantitative bots will close their positions a second before settlement to avoid fees, and then reopen them a second after settlement. Everyone thinks this way, and at each settlement threshold, the order book fluctuates wildly due to this clustering of activity. When the liquidation price is already densely packed below the current price, this artificial volatility is enough to trigger the first domino. Funding fees not only slowly erode your principal, but they also actively create market volatility every few hours, providing opportunities for price spikes. Why is it difficult for BTC to experience a 90% drop from a single order, while $H can? The answer is the depth of the order book. For BTC to drop by 1%, it needs to absorb millions of dollars in buy orders. Cryptocurrencies with high funding fees have pitifully thin order books—only a few scattered buy orders at the top three, followed by large empty spaces below. A single market sell order of a few hundred thousand dollars can directly penetrate several percentage points. Combining this liquidity weakness with the previous two points creates a closed loop: Due to high MMR and funding costs, the liquidation prices for H's long positions are densely packed below 0.80, 0.75, and 0.60. If a wave of selling pressure (like the hacker attack H experienced this time) hits, the price drops below 0.80, and the first batch of positions is liquidated. Liquidation itself is a market sell order placed by the system. In H's thin order book, if there are no buyers to absorb the liquidation sell orders, the price continues to fall, reaching 0.75, where the second batch of positions is liquidated, creating new market sell orders… This is a liquidation cascade: each liquidation creates selling pressure that pushes the price down to the next liquidation price, creating a self-reinforcing chain. The price thus plummeted vertically to 0.052 in a very short time, a drop of 93.9%. Major cryptocurrencies do experience liquidation cascades, but their deep liquidity can absorb them before they spiral out of control. Without this cushioning, speculative cryptocurrencies plummet as soon as they start to rise. Thin liquidity also has another side, specifically targeting those who are "right" in their direction (aka smart money): even winners are punished: Auto-Deleveraging (ADL) forces profit-taking. When the price crashes, someone might be shorting $H and have substantial unrealized profits. However, the price drops too drastically and too quickly, and there aren't enough buyers to liquidate the long positions. The liquidation engine can't even close them at the bankruptcy price (i.e., "margin call"), and the insurance fund can't fill the gap—at this point, the exchange initiates Auto-Deleveraging (ADL): sorting by profit and leverage, it forcibly liquidates a portion of the positions of the most profitable and highest leveraged counterparties, using their unrealized profits to fill the gap. In other words, in extreme crashes, even if your directional judgment is completely correct and you should be making a fortune, you might be forced out of the market by the system at the very point where you should have held on.ADL (Alternative Liquidity Scale) is a product of liquidity depletion to the point where even clearing cannot be completed normally. A sudden spike in price for a volatile coin often breaks through the market depth by tens of percentage points within seconds, instantly depleting insurance funds and triggering ADL. From the winner's perspective, this again illustrates how thin the market depth of volatile coins is: ADL rarely appears on mainstream coins, but it's a frequent occurrence in volatile coin crashes. Those who trade small-cap coins have seen these states: positions marked as "Reduce-Only," coins "suspended opening positions" or "closed positions only," or being told "limit orders only" when placing an order. These trigger much earlier and more frequently than on mainstream coins, and are based on two different mechanisms; understanding these is crucial to avoid misjudgment. The first mechanism involves the exchange pulling the limit on the entire trading pair, regardless of your position size; everyone is restricted. When prices fluctuate wildly, spot and futures prices decouple significantly, liquidity dries up, or on-chain anomalies occur like those seen with $H, exchanges will take measures to prevent market volatility and avoid creating even more dramatic price drops in thin order books. These measures include: allowing only partial reductions (closing positions, not opening new ones), suspending new positions, or prohibiting market orders to be placed only at limit prices (forcing everyone to provide liquidity themselves). Small-cap coins are more prone to these situations due to their thin order book – for the same magnitude of volatility, large-cap coins can absorb it, but small-cap coins decouple directly, forcing exchanges to shut down. Newly listed coins, coins about to be delisted, and coins removed from indices are also subject to these restrictions. The second set of restrictions is risk limits, which target your individual position size. As mentioned earlier, there's a tiered MMR system for volatile coins: the higher the notional value, the higher the tier, and the lower the leverage. When your position reaches the highest notional value limit of a coin, the exchange will no longer allow you to add to your position; your position will be locked and can only be reduced. The difference with altcoins lies in their inherently low ceiling—mainstream coins can hold tens or even hundreds of millions of dollars in nominal value per account, while altcoins might only hold hundreds of thousands or even tens of thousands. You might think you haven't opened a large account, but with altcoins, you could quickly hit the limit and be locked out as a reduce-only account. This differs from the first scenario: this only applies to you; others who haven't reached their limit can still open accounts. With these two scenarios combined, altcoins become a disaster zone. Normally, you might be locked out due to risk limits because your position is at the maximum limit, and when the market fluctuates, the exchange might place a limit order for the entire coin, either for reducing positions or for a price limit only. These two prompts look very similar on the app, but you need to distinguish them: if others can't open accounts either, it's the exchange restricting the coin, and the market is already very dangerous; don't try to fight it head-on. If only you are locked out, it's most likely you've hit a risk limit, and reducing your position and lowering the price limit will restore your account.Be especially wary of "limit orders only"—this is tantamount to the exchange admitting that market liquidity is so poor that they dare not let you use market orders. At this point, if you want to close your position, you can only place a limit order, which may not be able to be executed, or you may have to offer a significant discount to get it filled. In other words, you're most likely to be unable to exit when you desperately want to. Conversely, these restrictions are leading indicators. When a small coin starts frequently triggering "limit only" or "limit price only" orders, it's like the exchange is telling you that its liquidity and price stability are in serious trouble. This is itself a signal to reduce positions or exit the market, not just a problem preventing you from placing orders. As mentioned earlier, forced liquidation uses a mark price (spot weighted index) to filter out false spikes in the one-sided order book of contracts. $H demonstrated how terrifying it is when this defense collapses. The cause of $H's collapse was that hackers directly issued a massive amount of tokens on-chain and dumped them on decentralized exchanges (like PancakeSwap). The on-chain pool was extremely thin, and the price was instantly driven to zero. The contract's mark price is linked to these spot market orders. A spot market crash directly dragged the contract's mark price down precipitously. Even if there were still buy orders in the contract market and the latest transaction price hadn't bottomed out, the mark price instantly hit the liquidation line for all long positions, and the entire long position was directly taken over by the system and forcibly liquidated. This is what was mentioned at the beginning as "the defense line turning around and accelerating liquidation": the mechanism that protects you from being swept out by false spikes in the contract market becomes the fastest hand to liquidate you when the spot market is breached. Worse still, faced with the extreme decoupling between the H spot and contract markets, the exchange had to urgently disconnect the network—forcibly activating LPP (Last Price Protected), making liquidation use the latest transaction price of the contract instead of the distorted mark price. This was because the price discrepancy was so large that even the liquidation engine couldn't function properly. This temporary intervention was intended to stop the spread, but it itself shows that conventional risk control logic had completely failed. At the halfway point of the crash, four vulnerabilities resonated completely. By the time the bulls reacted, their positions had been wiped out within minutes, and the price could never recover. Returning to the initial question: what makes an already fragile cryptocurrency even more vulnerable? Individually, none of these factors are fatal, but combined, they create a catastrophic effect. The elements are not additive, but multiplicative. High MMR merely brings the forced liquidation price closer; funding cost erosion is just a slow, persistent loss; low liquidity simply results in greater slippage; and distorted price marking is merely an occasional anomaly.The danger lies in their combination: High MMR compresses everyone's liquidation price into a narrow range → Funding fee erosion causes this range to shift upwards over time, thinning the safety cushion → Thin liquidity ensures that any selling pressure (such as a hacker crash) can easily break through this dense liquidation zone → Liquidation sell orders create a waterfall in the thin order book → The spot market collapse drags down the mark price, allowing the waterfall to trigger all contract long positions without damage → forming an unstoppable chain of liquidations. Each vulnerability fuels the next. This is why retail investors who "just opened with a little too high leverage" on $H can be completely wiped out in a few minutes. Liquidation is irreversible; the moment the mark price touches the line, the system has already taken over everything. If you really want to use leverage on volatile coins, at least keep these four vulnerabilities in mind. First, always assume your true liquidation price is closer than what the app shows. The app doesn't account for funding fee erosion over the next few days. For high-fee cryptocurrencies, the cost of holding the position should be factored in when opening a position, estimating how many days it will take to reach a dangerous level. Second, leverage should be based on liquidity and MMR, not your confidence. Opening a 10x leverage position on a coin with 2.5% MMR and thin order book is a completely different level of risk compared to opening a 10x leverage position on BTC—the former might be wiped out by a 5% to 7% fluctuation, while for high-fee cryptocurrencies, 5% intraday fluctuations are almost the norm. Third, be wary of crowded trades. When funding rates are pushed to extreme highs and everyone is going in the same direction, you're on the side with the fastest wear and tear, the most concentrated forced liquidations, and the easiest to be ignited by a crash. Extreme funding rates are a warning sign. Unless you're doing strictly hedged futures-spot arbitrage (using spot or reverse positions to absorb directional risk and only profit from funding rates), don't stubbornly hold onto extreme funding rates with a one-sided naked position—arbitrageurs profit from the portion you're holding onto. Fourth, price spikes are not accidents, but the structural fate of high-fee cryptocurrencies. The combination of thin liquidity, dense liquidation zones, and fragile price tags means that a chain of liquidations is inevitable; the only difference is when and by whom (this time it's a hacker). Treating "it won't happen to hit me" as risk control is equivalent to having no risk control at all. Fifth, be cautious with full margin trading, and don't assume that being right in the direction guarantees safety. Full margin trading allows the risk of liquidation from a volatile coin to spread to other positions in your account. When trading volatile coins, try to isolate the risk within a single trade using isolated margin. Even if you short and are right in the direction, in an extreme crash like $H, you might still be forced to take profits by ADL—don't equate "I'm right in the direction" with "I'm safe." Sixth, treat "only reducing positions" and "only limit orders" as exit signals, not as troublesome instructions.When a small coin starts frequently imposing these restrictions, it's like the exchange is telling you that its liquidity and price stability are in serious trouble. Especially when it's restricted to only limit orders, the moment you most want to exit is precisely the moment you can't—don't wait until that point to leave. "Speculative" coins are more vulnerable because they simultaneously thin out all the safety mechanisms of leveraged trading—margin buffers, funding fee neutrality, liquidity depth, and mark price anti-flash crashes. It doesn't give you higher odds; it just shortens the fuse. Finally, regarding applicability, the mechanism described above targets USDT-based linear perpetual contracts on mainstream centralized exchanges (CEXs)—where most retail investors trade "spectacular" coins. Decentralized derivatives (like Hyperliquid and GMX) mostly rely on oracle quotes for liquidation, and their funding fees and flash crash logic differ from CEXs; the profit and loss curves of coin-based (Inverse) contracts are non-linear, and the liquidation distance algorithm also needs to be changed. Don't simply apply this formula to cross-platform trading. It's worth noting that the high funding costs and low liquidity discussed here are fatal to one-sided naked positions, but a source of alpha for cash-futures arbitrageurs—the same mechanism, but different perspectives lead to different outcomes, from being the predator to the prey. This article is primarily written from the perspective of one-sided speculators. The MMR tiers, funding rates, and liquidation prices mentioned in this article are illustrative data used to explain the mechanism; the actual parameters vary greatly across different exchanges and trading pairs and are dynamically adjusted. The liquidation price uses a simplified formula for teaching: opening price × (1 − IMR + MMR), which has a slight deviation of about 0.2% compared to the exchange's precise formula (the denominator includes 1 − MMR and is superimposed with the tiered quick calculation amount cum), but this does not affect the conclusion. Specific figures and event details regarding the $H crash are subject to public records and exchange announcements; actual trading should refer to the actual parameters and liquidation prices displayed on the platform at the time. [@agintender]