August 15, 2025, 2:00 PM (UTC+8) Historically repurchased and reserved OKB will be permanently burned through an on-chain smart contract. August 18, 2025, 2:00 PM (UTC+8) The OKB smart contract will be upgraded to remove minting and burning functions.FAQWhat's X Layer? X Layer is a public blockchain, decentralized public blockchain launched by OKX. It isn't a sub-chain or dedicated chain of the OKX exchange. Anyone can deploy projects on X Layer.

Contract Type Call and Put Exercise Style European options Contract Expirations 1, 2, 3, 4 dailies 1, 2, 3 weeklies 1, 2, 3 monthlies 1, 2, 3 quaterlies of the March, June, September and December cycle.

Screenshot / Non-original File / Missing Pages / Damaged File / Expired File / Unsupported Language Issue Description: The system detects any of the following: screenshots, scanned or printed copies instead of original documents; black-and-white photos; missing pages; poor-quality or damaged files; expired documents; or documents in an unsupported language.

Bundle verification: if you choose to transact on a Layer 2 network (such as Optimism, Base, or Arbitrum One), the transaction will be verified on Layer 2 and then bundled with other transactions as a single bundle for verification on Layer 1.

acctLv == "2": 14 print("Single-currency margin mode") 15 elif acctLv == "3": 16 print("Multi-currency margin mode") 17 elif acctLv == "4": 18 print("Portfolio margin mode")10.

Example 1: Entry 1: (Standard) Address A Entry 2: (Universal) Address A These addresses will be merged to Entry 2, which allows withdrawals of any crypto selected for a specific network, based on compatibility. Example 2: Entry 1: (Standard) Address A Entry 2: (Universal) Address A Entry 3: (EVM) Address A These addresses will be merged to Entry 3, which allows withdrawals of any crypto selected for EVM compatible networks.How does the verification period works after the address type upgrade?

If a component's price deviates more than 3% from the median price of all components, the component's price will be taken at 97% or 103% The deviation limit was updated from ±3% to ±2%. If a component's price deviates more than 2% from the median price of all components, that component's price will be taken at 98% or 102% of the median. Component weights of each index Equally distributed Distributed according to the component exchange's trading volume and liquidity levels 2.

As specified in number 2, the times of sampling inspections will affect the chance of tampering or manipulation succeeding. 5. Generating low-degree proof: we can control the probability of tampering or manipulation success through sampling inspection. However, there is a condition as mentioned in number 2 that we need to ensure the polynomial degree being verified is not more than the degree of a valid polynomial.

You can set up a daily, weekly, every 2 weeks, or monthly plan for purchases by following these steps.How do I create a recurring buy plan?

If the 50162 error still appears, continue with Method 2.Method 2: Remove the damaged passkey from Google Password Manager If Google Play services previously created a corrupted passkey, simply updating the app won't fix the issue. You must delete the damaged passkey in both the OKX app and your Google Password Manager.How do I delete the damaged passkey in my OKX app? When the error message appears, select the option to delete the damaged passkey.

Single order rate limit is 60 requests per 2 seconds. Batch order rate limit is 300 requests per 2 seconds. Colocation users have 4 times the standard limits. For market makers, please contact your account manager or institutional@okx.com to raise any rate limit.How do I access trade history for options (Public)? Orderbook trade history is available via websocket. Please note this only includes orderbook option trades. RFQ trades history is also available via websocket.

Step 2: During the transfer operation, there will be warnings about the effect and risk of altering permissions. If the user proceeds, it leads to malicious alteration of permissions.

Learn more on how to import your account on MetaMask Open MetaMask wallet app, select Import using Secret Recovery Phrase to import your wallet 2. Open your OKX exchange account on your app, and select Assets > Deposit Opening Deposit page from Assets 3. Find the crypto and network that you've wrongly transferred, and Copy the deposit address.

Isolated margin can help reduce risk.2. Advantages of cross margin: Shared margin increases funds utilization. Under cross margin, positions in futures with the same settlement crypto share margin, and profits and losses offset each other, helping improve capital efficiency.

Example: If the fee is 2%, and you withdraw 100 USD, you’ll pay a 2 USD fee. If you withdraw 500 USD, the fee would be 10 USD. Percentage + flat fees This type of fee is a combination of both, so you'll pay a percentage of your withdrawal amount plus a fixed flat fee. Example: 1.5% + 1 USD fee If you withdraw 200 USD: 1.5% of 200 USD = 3 USD Plus 1 USD flat fee Total fee = 4 USD Actual fees being charged will be displayed on the Preview screen before you submit.