You may reach out to the third-party payment channels via contact details below: Fiat partner How to contact Simplex https://www.simplex.com/support/ Banxa https://support.banxa.com/en/support/tickets/new MoonPay https://www.moonpay.com/contact-us Mercuryo mailto: support@mercuryo.io Coinify https://help.coinify.com/hc/en-us/requests/new UTORG https://utorg.pro/contacts/ Advcash https://support.advcash.com/hc/en-us/requests/new Fiahub https://www.fiahub.com/livechat/ Itez https://itez.com/contacts

For more information, go to www.okx.com/en-sg © 2025 OKX. All rights reserved. In order to comply with local regulations, certain features may not be available in your region.

Note: Other wallet connections are currently not supported on the OKX SG App, please use the Web: https://my.okx.com/en-sg Continue to connect your wallet You can choose to connect via OKX wallet extension You can also choose to connect via other methods If you choose to connect your wallet via WalletConnect, you can scan the QR code or select All Wallets to pick the wallet that you are using.

Arbitrum ASTR Astar ATOM Cosmos AVAX Avalanche AXS Axie Infinity BADGER Badger DAO BAL Balancer BAND Band Protocol BAT Basic Attention Token BCH Bitcoin Cash BICO Biconomy BLUR Blur BNB BNB BNT Bancor Network BONK Bonk BSV Bitcoin SV BTC Bitcoin BTT BitTorrent CEL Celsius Network CELR Celer Network CFG Centrifuge CHZ Chiliz COMP Compound CQT Covalent CRO Crypto.com CRV Curve Finance CSPR Casper Network CVC Civic CVX Convex Finance DAI Dai DOGE Dogecoin DOT Polkadot DYDX dYdX EGLD Elrond ENJ Enjin Coin ENS

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.

BTC-USDT, ETH-USDT, XRP-USDT, SOL-USDT 100,000,000 DOGE-USDT 20,000,000 ADA-USDT, LTC-USDT, AVAX-USDT, BNB-USDT, LINK-USDT, SHIB-USDT, AAVE-USDT, PEPE-USDT, SUI-USDT, HYPE-USDT 10,000,000 ETC-USDT, DOT-USDT, BCH-USDT, FIL-USDT, NEAR-USDT, OP-USDT, TRX-USDT, UNI-USDT, CRV-USDT, XLM-USDT, ARB-USDT, WLD-USDT, TON-USDT, HBAR-USDT, WIF-USDT, ONDO-USDT, PENGU-USDT, TRUMP-USDT, XAUT-USDT, PUMP-USDT, WLFI-USDT 2,500,000 APE-USDT, APT-USDT, ATOM-USDT, DYDX-USDT, GALA-USDT, SAND-USDT, ALGO-USDT, CFX-USDT, ENS-USDT

DOGE-USDT, SOL-USDT, SUI-USDT, PEPE-USDT 10,000,000 TRX-USDT, ARB-USDT, OP-USDT, FIL-USDT, STETH-USDT, ETC-USDT, APT-USDT, SHIB-USDT, ADA-USDT, LINK-USDT, DOT-USDT, XLM-USDT, UNI-USDT, OKB-USDT, AVAX-USDT, BNB-USDT, AAVE-USDT, HBAR-USDT, WLD-USDT, LDO-USDT, NEAR-USDT, XAUT-USDT, TON-USDT, BONK-USDT, WIF-USDT, TRUMP-USDT, PI-USDT, BABY-USDT, JITOSOL-USDT, WLFI-USDT, LINEA-USDT 2,500,000 BCH-USDT, DAI-USDT, CFX-USDT, ATOM-USDT, APE-USDT, CRV-USDT, STX-USDT, ICP-USDT, ALGO-USDT, ORDI-USDT, PEOPLE-USDT, ENS-USDT

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?

Kindly refer to: https://www.okx.com/docs-v5/en/#affiliate-rest-api

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.

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.

For more information, please visit www.okx.com © 2026 OKX. Where any discrepancy arises between the translated versions and the English version, the English version shall prevail. Note: In order to comply with local regulations, certain features may not be available in your region. This Program and its rewards are subject to OKX's eligibility criteria and may be modified at any time.