Links created on or after January 1, 2026 will be assessed from the fourth calendar month upon link creation. Note: Links created before January 1, 2026, will continue to be assessed starting from the first day of the third calendar month after the link is created. Examples: A link created on August 1, 2026 will be assessed starting from November 1, 2026, and subsequently on the 1st day of each calendar month.

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How does Block Trading by OKX determine which quote is the "best quote" to show on the first line for my RFQ on the RFQ Board? The best price, bid and ask, will be sorted to the top, independent of the Maker. This means that the best bid may have been provided by a different Maker than the best ask. For quotes on RFQs where the quote currency of all legs are the same, the best bid is simply the highest value, while the best ask is the lowest.

For example, "The overall champion of the 2026 football competition" is an event with markets such as "Brazil to win," "Argentina to win," and "France to win" — you can predict the event's outcome based on your own judgment.How do I use Outcomes?Step 1: Access Outcomes Open the OKX App, find the Outcomes entry in the homepage banner, and tap to enter.First-time users need to complete an account initialization process — this isn't required on subsequent visits.

For example, "2026 football competition" is an Event, which contains multiple Markets such as "Brazil wins," "Argentina wins," "France wins," etc.What do Yes and No mean? Yes means you believe the event will occur; No means you believe it will not. In a single-market event, Yes + No price = 1.00 xp.What event types does Outcomes support? Binary Event: an event contains only one market — for example, "Will Germany advance from the group stage in the 2026 football competition?"

OKTChain will continue operating until January 1, 2026. Before this date, you can deposit OKT to the platform at any time. Deposited OKT will be automatically converted to OKB based on the same average closing price rules.How are other on-chain assets on OKTChain handled? OKTChain will continue operating until January 1, 2026. You should manage and withdraw other on-chain assets before this date.How do I exchange OKT from a cold wallet for OKB?

For example, to trade $500 worth of ETH for DAI, the order is routed across four pools: UniswapV2(50%) Kyber (22%) Sushiswap (18%) 0x (10%)Best routing Smart order routing algorithms scan for all possible execution opportunities. For example, if you want to trade sUSD for ETH, a direct sUSD > ETH swap might not be the best option. In this case, it requires an sUSD > USDT/DAI swap and then a USDT/DAI > ETH swap to get the best rates.

On April 10, 2026, OKX launched event contracts to some supported countries/regions on the App, Web and API. Please refer to the page display for the corresponding supported regions. If it’s available, it'll be displayed normally.

You can choose the order type that best suits your trading needs.What's a limit order? A limit order is an order where you set the order quantity and the maximum price you are willing to buy or the minimum price you are willing to sell. When the market price meets your conditions, the system will execute the order at the best available price within your specified limit.

Supports placing orders by contract quantity If the order price can be matched immediately against the current order book, it is filled immediately (Taker) If it cannot be matched immediately, it rests in the order book and waits (Maker) (2) Market Order No price is specified; the order is filled immediately at the best available price in the current order book. Suitable for users who want to enter or exit positions quickly.

The first buy order will be placed at the best ask price, the second order at a price between the best bid and the best ask, the third order at the best bid, and so on. Price-speed balance: To aim for a balanced execution between time and price, it’ll adopt a moderate approach when placing the first order. The first buy order will be placed at a price between the best bid and the best ask, the second order at the best bid, the third order at the second best bid, and so on.

The best thing to do is to reach out to your counterparty to start discussing a resolution as soon as you can. OKX cannot invalidate any trades done OTC with another user, the only way to solve a trade error is to agree with your counterparty about how to best proceed.

What are the API Best Practices? For those connected via API, visit here to learn more about API best practices.Is Market Maker Protection (MMP) available for options trading? We offer Market Maker Protection for options market makers to protect makers from executing too much within a short period of time. Please contact your account manager or institutional@okx.com if you want to have it enabled. Please refer to Market Maker Protection API.

Multiple professional solvers — including OKX's in-house Solver and third-party solvers — receive your intent and compete in a batch auction to offer you the best execution price. Best price wins. The Solver with the best price wins the auction and executes your trade on-chain through a secure settlement contract. Trade settled. The winning Solver submits the transaction to the blockchain, and you receive your swapped tokens.

Can the best bid price be higher than the best ask price during the pre-open period? Yes. During the pre-open period, orders are collected but not executed. As a result, the displayed best bid price may be higher than the best ask price. Orders are matched only after official trading begins and according to normal trading rules.