Cube

What is HTX?

Learn what HTX is, how its centralized crypto exchange works, and how features like spot, futures, bots, and proof of reserves fit together.

What is HTX? hero image

Introduction

HTX is a centralized cryptocurrency exchange where users can buy, sell, hold, and deploy digital assets through products like spot trading, futures, copy trading, bots, and yield features. That sounds simple on the surface, but the important question is more structural: *what problem is an exchange like HTX actually solving, and what do users give up in return? * The answer is that HTX reduces the friction of moving between many crypto markets and strategies in one place, but it does so by taking custody of user funds and operating the trading system itself.

That trade-off is the key to understanding the platform. A centralized exchange is useful because it can make markets feel fast, deep, and convenient. It is risky because the user is no longer settling every action directly on a public blockchain under their own control. With HTX, as with other custodial exchanges, the practical experience depends on two linked systems: the trading engine that updates balances and executes orders internally, and the custody layer that holds the assets users believe they can withdraw later.

HTX is the brand that replaced Huobi in September 2023. In the company’s explanation of the rebrand, the name ties together Huobi, TRON, and the exchange itself, with the “X” also marking the platform’s tenth anniversary. That branding matters less than the underlying continuity: if you see older references to Huobi products, APIs, or policies, they are often part of the same exchange lineage.

Is HTX custodial or non‑custodial and what does that mean for your funds?

AspectHTX (custodial)Self‑custody
ConvenienceOne account, many productsSeparate wallets per chain
Market access700+ assets, derivatives, yieldDepends on DEXs and bridges
SettlementInternal ledger off‑chainOn‑chain settlement per tx
ControlPlatform controls private keysYou hold private keys
Primary riskCounterparty & operational riskRisk of user key loss
Recovery optionsDepends on platform reservesNo third‑party recovery possible
Figure 361.1: Custodial vs self-custody

The cleanest way to think about HTX is as a managed market with a built-in bank account. Users deposit crypto to addresses controlled by the platform, and once those assets are credited, trading mostly happens inside HTX’s own ledger rather than directly on-chain. When a user buys BTC with USDT on spot, for example, the blockchain usually does not record that trade itself. HTX updates internal balances, matches the order against another user or market liquidity, and only needs to use public chains when assets enter or leave the platform.

This model is why centralized exchanges can support a broad set of products in a relatively seamless way. HTX says it supports 700+ assets for spot trading, along with futures trading with leverage, automated trading bots, copy trading, and an Earn product with daily rewards on more than 100 major assets. Those are not separate businesses loosely attached to a wallet. They all rely on the same basic advantage: once assets are already inside the platform, HTX can route them between products without making the user manage every blockchain interaction themselves.

That makes HTX attractive to users who want breadth and speed more than direct self-custody. A trader who wants to move from buying altcoins, to opening a leveraged position, to following a strategy through copy trading, to parking idle assets in an Earn product is choosing HTX because it compresses those actions into one account. The value is convenience and market access. The cost is counterparty risk.

How does trading work on HTX (spot, futures, leverage, bots)?

ProductLeverageMatchingSettlementRisk speedBest for
SpotNo leverageOrder‑book matchingInternal ledger; chain on deposit/withdrawSlower loss propagationBuy-and-hold, basic trades
FuturesHigh leverage availableOrder book with marginPlatform margin ledger; mark‑to‑marketFast liquidation riskDirectional, experienced traders
Copy tradingVaries by leaderPlatform routes leader tradesInternal balance reclassificationDepends on leader's actionsLess‑experienced users wanting exposure
Trading botsVaries by botAutomated order placementInternal ledger updatesFollows bot rulesRule‑based automation and scalping
Figure 361.2: Spot, futures, and automated trading compared

At the user-facing level, HTX looks familiar: deposit funds, choose a market, place an order, and monitor balances. Underneath, the mechanism is an order-driven exchange. In spot trading, a user either accepts an available market price or posts a limit order that sits in the order book until another participant matches it. In futures, the same matching logic is paired with leverage, which means the user is controlling a larger position than the collateral they posted.

The reason leverage changes the experience so much is not merely that gains can be larger. It is that losses propagate faster than many new users expect. If the market moves against a leveraged position, the collateral buffer shrinks quickly, and the platform may liquidate the position before the underlying asset has moved very far in percentage terms. So when HTX markets futures as a way to “amplify your trading power,” the mechanism behind that phrase is borrowed exposure, tighter margin constraints, and faster risk realization.

HTX also offers copy trading and trading bots, which are best understood as ways of outsourcing decision-making rather than changing the market structure itself. Copy trading lets users follow strategies associated with other traders. Bots automate rule-based execution. In both cases, the exchange is still doing what it always does: holding collateral, routing orders, and updating balances internally. These tools are useful mainly for users who want participation without manually monitoring every market movement, but they do not remove the underlying risks of trading or custody.

A simple example makes this concrete. Imagine a user deposits USDT to HTX because they want exposure to ETH but are not sure whether to trade actively. They might first buy ETH on the spot market. Later, seeing volatility rise, they might allocate a portion of funds to a futures position for more directional exposure. After closing that trade, they could leave the remaining assets in an Earn product for daily rewards. From the user’s perspective this feels like moving money between tabs. From HTX’s perspective, it is one custodial balance being reclassified across internal systems that serve different products.

How does HTX's Proof of Reserves work and what does it prove?

Because users do not directly control deposited assets, the most important trust question is straightforward: *if everyone tried to withdraw, would the assets be there? * HTX’s answer is its Proof of Reserves system. The platform says it maintains reserves covering user assets at at least a 1:1 ratio and publishes Proof of Reserves reports monthly.

The concept here is simple even if the implementation sounds technical. HTX defines the reserve ratio as on-chain assets snapshot / total users' assets on HTX. If that ratio is 100% or higher, the platform is claiming it has enough assets to cover customer balances. The idea is to make a custodial exchange somewhat more inspectable by showing both sides of the picture: assets the exchange controls and liabilities it owes to users.

HTX says it uses a Merkle tree to help users verify that their balances were included in the liabilities snapshot without exposing everyone else’s account data. A Merkle tree is just a way of compressing many records into one cryptographic summary. The analogy is a sealed ledger index: you cannot read every page from the seal alone, but you can check whether your own entry belonged to the sealed set. That analogy helps explain the privacy-preserving inclusion check, but it fails in one important way: it does not by itself prove that every reserve asset is unencumbered, high quality, or independently controlled.

That limitation matters. HTX’s own documentation says some assets in custodial wallets are maintained by third-party custodians, and users are told to contact those custodians to verify balances. Its pages also describe Proof of Reserves in terms of independent audits, but the supporting material provided here does not clearly name an auditor for the monthly disclosures. A separate HTX product page was also captured showing placeholder values rather than live audit-time numbers. So the right conclusion is not that Proof of Reserves is meaningless. It is that PoR is a useful transparency tool with boundaries: it can improve visibility into snapshots of assets and liabilities, but it is not the same thing as a full real-time solvency audit.

What are HTX's security controls and how has it handled past incidents?

HTX says it uses cold, hot, warm, and multi-party offline wallets for asset security, along with account protections such as multi-factor authentication, unusual login alerts, and cookie hijacking protection. These measures address different layers of failure. Some are about protecting user accounts from takeover. Others are about reducing the chance that a single compromised wallet or process can drain exchange-held funds.

But for a centralized exchange, security is not just a list of tools. It is the quality of operations under stress. That is why incident history matters. In late 2023, HTX and Heco Chain were reported as having suffered a major exploit, with HTX temporarily suspending deposits and withdrawals while investigating. Public statements said losses related to the exchange would be fully covered. That response matters because it shows how centralized platforms absorb shocks: not by making the blockchain reverse itself, but by using reserves, treasury resources, or other balance-sheet capacity to make users whole if they choose to do so.

This is also where “100% withdrawal guaranteed” should be read carefully. As a user-facing claim, it signals confidence in custody and liquidity. But the available source material does not provide full on-page detail on the exact conditions, exceptions, or operational limits behind that statement. For users, the practical lesson is clear: exchange security is partly technical and partly institutional. You are not only trusting code and wallets; you are trusting the firm’s controls, transparency, and willingness to honor obligations during a crisis.

Does HTX provide APIs and tools for bots, institutions, and high‑frequency trading?

API typeLatencyBest forAuthenticationRate behaviourData
REST APIHigher, request/responseOne‑off trades and withdrawalsOptional; signed for private callsPer‑request rate limitsSnapshot responses
WebSocket APILow, push updatesLive market data and order updatesCan be authenticated for private streamsConnection‑level limits, keepaliveStreaming incremental updates
Private signed APIDepends on transport usedAuthenticated trading and withdrawalsHMAC‑SHA256 signature requiredUID‑aggregate limits across keysAccount‑specific events and actions
Figure 361.3: HTX APIs: REST vs WebSocket vs Signed

HTX is not only built for retail users clicking through the app. Its API documentation shows a second audience: developers, desks, and active traders who want to connect software directly to the exchange. The platform offers both REST APIs for one-off actions like trading and withdrawals and WebSocket APIs for streaming market and order updates.

That split reflects a basic engineering constraint. Some actions are occasional requests; others require low-latency continuous updates. If you are building a dashboard, a bot, or an internal trading system, polling for every price change is slow and wasteful. A WebSocket feed lets the exchange push updates as they happen. HTX’s private APIs require HMAC-SHA256 signing and use permissioned API keys for read, trade, and withdraw access, with IP binding encouraged for security.

This makes HTX more useful for users who need automation or infrastructure, not just a manual trading interface. But it also reveals the platform’s intended range: HTX is trying to be both a consumer exchange and a programmable venue. That combination appeals to sophisticated participants, yet it also raises the stakes of reliability, rate limits, key management, and operational discipline.

Who should use HTX and when is it the right choice?

HTX is designed for people who want a single venue for crypto market access rather than a self-custody-first workflow. That includes newcomers drawn to copy trading or Earn, active traders rotating across many spot markets, and more advanced users using futures, bots, or APIs. The product breadth makes sense if your main problem is execution convenience: finding markets, moving quickly, and keeping capital inside one system.

It is less compelling for users whose main priority is minimizing trust in intermediaries. HTX can offer speed, product depth, and convenience precisely because it is a centralized operator. The more of its features a user adopts, the more their activity depends on HTX’s internal accounting, custody, and governance remaining sound.

There is also an important jurisdictional wrinkle. Public regulatory pages show warnings and licensing-list context that may affect whether the platform is appropriate or available for a given user. That is not a side detail. For a centralized exchange, geography can shape what protections, recourse, and product access a user actually has.

Conclusion

HTX is a centralized crypto exchange that combines custody, internal trade matching, derivatives, automation, and yield products into one platform. Its usefulness comes from reducing friction: once assets are inside the exchange, users can move across many markets and tools without managing every step on-chain.

The thing to remember tomorrow is this: **HTX is convenient because it centralizes complexity; and that same centralization is the source of its main risks. ** If you understand that mechanism, the rest of the platform makes sense.

What should you look for before choosing a crypto exchange?

Before choosing a crypto exchange, confirm custody model, execution quality, fees, supported workflows (spot, margin, derivatives), API capabilities, and regulatory coverage. Use Cube Exchange as the practical comparison anchor (Cube uses MPC non‑custodial key management and offers standard spot and derivatives markets plus REST/WebSocket APIs) then run a short, hands‑on evaluation to compare Cube with HTX.

  1. Fund your Cube account with a small fiat on‑ramp or a supported crypto transfer to verify deposit speed and routing.
  2. Open HTX and Cube custody/Proof‑of‑Reserves and fee pages; note custody model (custodial vs MPC non‑custodial), auditor names, reserve refresh cadence, and withdrawal fee schedules.
  3. On each platform, open the same market and place a small limit order (use a limit for price control and an equivalent order size) to compare fill behavior and visible order book depth.
  4. Compare maker/taker fees, spreads, and per‑withdrawal costs by calculating total trade + withdrawal cost for your sample size.
  5. Execute a small on‑chain withdrawal from each platform and time how long the chain confirmations and final credit take to reach your external wallet.

Frequently Asked Questions

What does it mean that HTX is a custodial exchange — are my trades recorded on-chain?
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HTX is custodial: when you deposit crypto you send it to addresses controlled by the platform, HTX updates balances and matches trades inside its own off‑chain ledger, and only interacts with blockchains when assets enter or leave the platform.
How does HTX's Proof of Reserves work and can I independently verify my account is covered?
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HTX publishes monthly Proof of Reserves and says it maintains a 1:1 on‑chain assets / user liabilities ratio and uses a Merkle tree so users can cryptographically check inclusion of their balance, but the published material does not name an auditor, provide full snapshot timestamps or live numeric proofs on the page, so independent verification has practical limits.
If HTX advertises a '100% Withdrawal Guaranteed' promise, does that legally ensure I can always withdraw my funds immediately?
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"100% Withdrawal Guaranteed" is a user‑facing claim HTX makes to signal confidence in custody and liquidity, but the available documentation on the site does not publish the exact operational terms, exceptions, or conditions behind that guarantee, so its scope and limits are not fully documented.
Has HTX ever been hacked and did the exchange cover user losses?
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In late 2023 HTX and the Heco chain were reported exploited, HTX temporarily suspended deposits and withdrawals while investigating and publicly said related losses would be fully covered, but forensic causes (e.g., private key compromise) were reported as suspected and not definitively confirmed in the public sources.
How does leverage on HTX futures increase my risk compared with spot trading?
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Futures on HTX use leverage, which increases exposure relative to posted collateral; when markets move against a leveraged position the collateral buffer can shrink quickly and the platform may liquidate positions to protect the system, so losses can occur far faster than unleveraged spot trading.
HTX mentions third‑party custodians — how does that affect the reliability of their reserve disclosures?
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Some custodial wallets HTX lists are maintained by third‑party custodians and HTX directs users to contact those custodians to verify balances; Proof of Reserves snapshots also exclude HTX corporate holdings, so custody by third parties and ledger exclusions limit how complete any published snapshot is.
Is HTX the same company as Huobi or a different exchange?
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HTX is the rebrand of Huobi (the HTX name replaced Huobi in September 2023), so older references to Huobi products, APIs, or policies are often part of the same exchange lineage rather than a separate company.
Are HTX's APIs suitable for bots and high‑frequency trading, and what security practices do they require?
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HTX provides REST and WebSocket APIs (REST for one‑off actions, WebSocket for streaming), requires HMAC‑SHA256 signed private API keys with permission scopes and recommends IP binding, making the platform usable for automated trading but integrators should confirm current per‑endpoint rate limits and key limits because documentation contains inconsistent statements.

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