All
FAQ
Announcements
Product documents
Zero-Knowledge Proofs: what are zk-STARKs and how do they work? (zk-Stark V2)
What is Proof-of-Reserve and Zero Knowledge Proof?Proof-of-Reserve (PoR) This is a process for cryptocurrency exchanges to show they have enough assets to cover all customer balances. This builds trust by proving the exchange is not hiding any liabilities.Published on 21 Oct 2024Updated on 11 Feb 202692Zero-Knowledge Proofs: what are zk-STARKs and how do they work? (zk-STARK V1)
We do it to keep the user's net value non-negative by checking if the first rows are zero for each block. If someone has a negative net value, the first row of their block will not be zero because a negative value (-x) will turn out to be (p - x) in finite field , which is a very large positive value. We input random numbers for each user and fill the blank spaces in the table with 0 2.Published on 10 May 2023Updated on 8 Sept 2025179What's OKX Security Assistant?
Below are the best practices when it comes to handling risky situations: What the OKX Security Assistant displays when there's a riskSingle-item uninstall vs. one-click uninstall Single-item uninstall: suitable when there are only a few risk items and you want to confirm their sources one by one.Published on 15 Jan 2026Updated on 13 Feb 202615OKX API FAQ
The rise and fall value of the latest transaction price compared to the opening price of the K-line 24 hours ago/100% of the opening price of the K-line 24 hours ago. The above formula data can be obtained through the market interface here. What's the reason for the error message "51000 Parameter posSide error" when placing an order? You need to check the account mode first; buying and selling mode/opening and closing mode, which can be viewed here to obtain posMode.Published on 20 Sept 2024Updated on 23 Mar 2026135How can I reduce trading fees?
To qualify, the invited users must meet the following requirement: The trading volume of any single order must be at least 50 USDT. Invited users can reach the required trading volume through spot, perpetual swaps, futures, margin, or options trading. P2P trading doesn’t count toward the trading volume. For details on becoming an OKX Node and enjoying rebates and fee discounts, please refer to the OKX Node Program Rules.Published on 19 May 2025Updated on 7 Apr 202664Why hasn't my deposit been credited?
If none of the above applies to you, please contact our customer support by clicking the button below:Published on 1 Sept 2023Updated on 3 Apr 202613,767How do I stay safe from phishing SMS using the name OKX?
Below, you'll find a breakdown of how these scams operate, why they’re so effective, and what steps you can take to protect yourself and your crypto.What’s happening? We’ve recently seen a rise in reports from users receiving fraudulent SMS messages with “OKX” as the sender name.Published on 9 May 2025Updated on 4 Mar 2026321How do I track the cost price of my spot trades?
On the trading screen, select Settings from the top menu Proceed with the selection of Settings from the pop-up menu On the Trading mode screen, select Spot cost price type Select between Average cost price or Cumulative cost price Select from the available options under the Spot cost price type options The cost price will also be reflected on your K-line Chart and the positions menu. Cost price on the K-line chart Cost price on the positions menuPublished on 5 Sept 2024Updated on 6 Apr 202627Why am I asked to confirm my personal details again?
information: Personal details: name, ID number, and date of birth Address information: address and proof of address (if applicable) Account purpose: how you use your account (for example, salary deposits, payments while traveling, money transfers, savings or others) This information helps us: Verify your identity and secure your account Prevent unauthorized access and financial fraud Maintain compliance with global financial regulations All your personal data is encrypted and securely stored in linePublished on 19 Mar 2025Updated on 15 Oct 2025144Understanding OKX's Security Fund
Within our OKX group, depending on local regulations, the term "Security Fund" may be known by other names.The fund is primarily used to manage losses incurred when a user's position is liquidated and subsequently leads to negative equity (a state where the market value of the position falls below the "bankruptcy price" or zero-margin level).2. What's the Security Fund Used For? The core purpose of the Security Fund is to absorb the shortfall created by "bankrupt positions."Published on 25 Mar 2026Updated on 6 Apr 20263What onboarding information is required for a privately owned company?
To register as a privately owned operating company, you need to provide the information of: At least one corporate officer/manager: Persons with significant responsibility to control, manage, or direct the privately owned company including executive officers, senior managers (for example, CEO, CFO, COO, Managing Member, General Partner, President, Vice President, or Treasurer), or any other person who regularly performs similar functions.Published on 13 Oct 2023Updated on 12 Feb 2026278How do I turn on and sync multiple charts on a screen?
Additionally, order and position lines are not visible under multiple charts and can only be seen on a single chart layout.Published on 9 Aug 2024Updated on 10 Sept 202530How do I make a withdrawal? (app)
Select exchanges or wallets to perform an on-chain withdrawal Complete the withdrawal details below and select Submit Fill in address Note: you can enable allowlist mode to protect your assets. Insert Withdrawal amount Note: the withdrawal amount should be more than the minimum amount but can't exceed the limit based on your verification level.Published on 22 Aug 2023Updated on 8 Apr 20265,843Official Rules for McLaren Race Rewind Fandom Digital Collectibles for Australia and Brazil
Eligibility: to participate in this Promotion, you must be at least eighteen (18) years old and a resident of Australia or Brazil.Published on 19 July 2024Updated on 9 Feb 20261How do I create passkeys? (web)
Once the passkey feature is activated, at least one passkey must always remain linked to the account.Published on 16 Aug 2023Updated on 29 Jan 20264,259