How long does the Call Auction or Pre-open period last? The duration of the Call Auction or Pre-open period may vary by trading pair. Typically, both call auctions and pre-open periods last for an hour. 2. What types of instruments support Call Auction or Pre-open? Call Auction and Pre-open mechanisms are used for spot and perpetual futures trading pairs during listings. The applicable opening mechanism for each trading pair will be specified in the listing announcement. 3.

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.

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.

For more information, go to okx.com © 2026 OKX. All rights reserved.

Campaign Rules Campaign Period: May 21, 2026, 11:00 AM – May 29, 2026, 11:00 AM (UTC+8) Eligibility: Participants must click the "Join Now" button to be considered valid participants FAQQ1: How many activities does this campaign include? This campaign consists of two activities: Activity 1: Predict BTC block hash — share up to 2 BTC Activity 2: Make a Pizza — share up to 15.88 BTC + share the 1 BTC Hash BonusQ2: How do I participate in Activity 1 and win a reward?

UniswapX is a new permissionless, open-source, Dutch auction-based protocol that's designed to give token swappers the best possible deal by aggregating liquidity from various sources, preventing maximum extractable value (MEV) attacks, providing gas-free transactions on the Ethereum blockchain, and eliminating costs for failed transactions.Why should I use the Snap feature?

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?

MASK-USDT, 1INCH-USDT, BAND-USDT, CHZ-USDT, KSM-USDT, LRC-USDT, LUNA-USDT, NEO-USDT, SNX-USDT, SUSHI-USDT, THETA-USDT, YFI-USDT, ZIL-USDT, MAGIC-USDT, GMX-USDT, WOO-USDT, ONT-USDT, EGLD-USDT, MINA-USDT, QTUM-USDT, AR-USDT, BAT-USDT, STORJ-USDT, XTZ-USDT, ZRX-USDT, CELO-USDT, IOST-USDT, RVN-USDT, IOTA-USDT, RSR-USDT, AGLD-USDT, ETHW-USDT, UMA-USDT, PERP-USDT, FLM-USDT, CORE-USDT, API3-USDT, BNT-USDT, BLUR-USDT, GAS-USDT, ORBS-USDT, BIGTIME-USDT, SLP-USDT, CVC-USDT, BICO-USDT, FLOW-USDT, SSV-USDT, AUCTION-USDT

For example, "2026 World Cup Champion" 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 PTS.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 World Cup?"

CSPR-USDT, CRO-USDT, PERP-USDT, CELO-USDT, SKL-USDT, ONT-USDT, GMX-USDT, FLM-USDT, KSM-USDT, AXS-USDT, XCH-USDT, ETHW-USDT, IOTA-USDT, YFI-USDT, BAND-USDT, MINA-USDT, FLOW-USDT, BNT-USDT, GAS-USDT, SPURS-USDT, CETUS-USDT, BICO-USDT, ZRX-USDT, ORBS-USDT, BADGER-USDT, API3-USDT, AIDOGE-USDT, LOOKS-USDT, RSR-USDT, RVN-USDT, SLP-USDT, WOO-USDT, BAT-USDT, ELF-USDT, RACA-USDT, CVC-USDT, VRA-USDT, WAXP-USDT, NFT-USDT, JOE-USDT, ALPHA-USDT, SWEAT-USDT, ID-USDT, GODS-USDT, BAL-USDT, USTC-USDT, CTC-USDT, AUCTION-USDT

Order matching: OKX DEX adopts a call auction mechanism, ensuring that a trading pair only has one traded price in a block. Users enjoy a more seamless trading experience and lower trading fees when trading on OKX DEX. Compared to public blockchains such as Ethereum, DEX focuses on providing a better, dedicated infrastructure for trading DApps and DEXs. This directly leads to lower costs for developers deploying their trading DApps and indirectly leads to lower trading fees for users.

OKX NFT Market NFT supports bidding auctions and direct purchases. Search for your favourite NFT under the Explore section Select Buy to kickstart the NFT purchasing process Pop up box with the purchasing details of an NFT Add the NFTs to the shopping cart and purchase all of it in one go OKX has an exclusive feature: on networks such as Ethereum, BSC, you can add several NFTs to the shopping cart, and buy them in one go to save network fees.

Opensea: The world's largest comprehensive NFT trading market by total trading volume, supporting the minting, display, trading, and auction of NFTs. UniSat: A community-centered Bitcoin NFT trading platform that supports NFT creators to receive royalties.What's GameFi? GameFi is the integration of blockchain technology into gaming.

Campaign period May 19 – June 19, 2026 (4-week pilot)Who can participate? This campaign is open to selected OKX P2P merchants in Saudi Arabia who meet all of the following: Whitelisted by the local OKX BD team for this campaign Agree to the SAR/USDT Sell ad price requirement (see below) during the campaign window Participation is by invitation only. The final whitelist is at the sole discretion of the OKX P2P team.How does it work?

Event Contract Fee has been updated effective from May 6, 2026 at 16:00-17:00(UTC+8). For more details, please refer to Notice on OKX Event Contract Fee UpdateAPI Integration & AI Agent Integration Supported account modes: Futures mode, Multi-currency mode, and Portfolio mode. Spot mode is not supported. Position mode: API access only supports Isolated margin mode.