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.

Use voice verification: Wait 60 seconds, then select Voice Verification to receive a call instead of an SMS. Cooling period after failure: If you see “SMS sending failed,” wait about 2 hours before trying again. Number portability issues: If you recently switched carriers while keeping the same phone number, delivery issues may occur. Please inform customer support for further assistance.

Proof of reserves: OKX maintains a 1:1 reserve of all account assets on our platform and periodically performs global proof of reserves reports aimed at generating greater transparency in the assets held on our exchange. 300+ coins available: With more than 300 cryptocurrencies, of which 60 are euro-based trading pairs, the opportunities are endless. For beginners and pro's: The OKX app offers a very simple buy and sell interface for beginners.