To enhance feed efficiency and stability, OKX is scheduled to deprecate the checksum field across WebSocket order book channels. The deprecation will take effect on the demo environment on 2 June 2026 and on the production environment on 23 June 2026. The change applies to the books, books-l2-tbt, and books50-l2-tbt channels . After the deprecation date, the checksum field will remain present in push messages but will always return 0 and must no longer be used for data integrity validation.

You can either enter the address or select the address in your address book. If there's no address available, you can select Add address or Manage address book to add a new address to your address book. Open your address book 4. Select Add address and select your preferred options; whether single address or multiple addresses. Note: when adding address, you can save the network selected as an EVM network address to withdraw other crypto from this network.

With this feature enabled, you can only withdraw to addresses saved in your address book. To add a new address, simply add it to your address book prior to withdrawing. If your account is compromised, the extra layer of protection will prevent you from withdrawing funds to any unauthorized addresses.Getting started Open your OKX App, go to Portfolio > select Transfer > select Withdraw > Select crypto Transfer option on Portfolio page 3. Select Address book from the list of destinations 4.

Order book depth. A market order is filled against the order book price level by price level. A large order can work through several levels, so its average fill price is worse than the price at the top of the book. On markets with little liquidity, even a moderate order can work a long way through the book. Fees. Trading fees are charged on top of the fill price.

A taker without access can execute only against nonRpiQty, even when both use the same feed. books-rpi includes only RPI quantity that is currently available for execution. RPI orders hidden under the matching rules above are excluded. The existing books, books-full, books5, bbo-tbt, books-l2-tbt, and books50-l2-tbt channels are unchanged. Web and app order book The web and app order book shows the same consolidated depth as books-rpi, including tradeable RPI liquidity.

To check for yourself, look at the 24h volume and the order book. If volume is low and the book is thin, the chart is showing that there were no trades in those intervals. Switching to a longer interval such as 4H or 1D gives a more continuous picture.Why is the price here different from the price on another platform? Applies to: Spot pairs. Each venue has its own order book, and the last price is simply the price of the most recent trade on that book.

Whereas for Crypto-margined spreads, the price is in USD and the quantity is also measured in USD.Type of Orders There are currently three types of orders available in Nitro Spreads: Limit order (default) If you want to immediately fill an order, you can simply place an order with a price that crosses the book. Conversely, you can add a passive order into the book by placing an order with a price that doesn’t cross the book.

A limit order that rests on the order book is charged the maker fee; an order that fills immediately against the book is charged the taker fee. For the current rates, see the spot trading fee tables and the trading fee schedule.What is the spread on the order book? On the spot order book there are always two prices: the highest price someone is currently willing to pay, and the lowest price someone is currently willing to sell at.

Order Book & Pricing Price equals probability. Each share is priced between 0.001 and 0.999 USDT, directly reflecting the market's collective assessment of the probability that the event will occur.The order book is a list of all unfilled buy and sell orders in a market, divided into two sides (bid and ask). Spread is the gap between the highest bid and the lowest ask. A tighter spread indicates better market liquidity.

When adding or verifying an address in your withdrawal address book, the default verification period is 30 days. To verify an address permanently instead, select Change verification period during the setup. This feature is available on web and in the app (version 6.75 and above).

The last price on any venue comes from that venue's own order book, and order books are independent of each other. A large market order, or a quiet moment with less depth on one side of the book, can push the last price away from where other venues are trading, and it returns once the book refills. A short spike like that is normal market behaviour rather than a fault, and it's one of the reasons the mark price rather than the last price is used for liquidation checks.

Address book updates We've updated the address book with new Network scope and Token scope options, giving you more flexibility and control over which networks and tokens each saved address applies to. When you're making a withdrawal, the address book also automatically filters addresses based on the network and token you've selected. What do "Network scope" and "Token scope" mean when I add an address? These new options give you more flexible and secure control over your withdrawal addresses.

The BTC/ETH prices of these orders are continuously updated using the prevailing crypto index price once they're placed in the order book, such that the corresponding USD prices of the orders remain close to the level you specify. The BTC/ETH prices of these orders are updated every 3 seconds in the order book.

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.

Nitro Spreads Nitro Spreads is a spread order book within Liquid Marketplace for you to trade spreads and basis. Spread trading capitalizes on spreads, i.e. price differences between related assets across different markets, usually with the same underlying or reference instrument. Nitro Spreads simplifies spread trading by simplifying the process for you. No more juggling positions across separate order books.