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Real-time best bid and best ask price updates for a market. The server sends an update instantly whenever the best bid or best ask changes. Each update contains the current best bid price, best bid amount, best ask price, and best ask amount for the subscribed market. Use this stream to maintain an accurate top-of-book view without polling the REST API.
Connect to wss://api.whitebit.com/ws — see WebSocket Overview for protocol details and keepalive requirements.

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Rate limits

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Subscribe to book ticker

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Update frequency

Updates are pushed instantly on every best bid or ask change. The channel is change-driven: the server sends nothing while the best bid and ask are unchanged, so a quiet market can go multiple seconds without an update. Do not infer connection health from message arrival — verify the connection with a ping instead.

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Error codes

Public bookTicker_update events exclude Retail Price Improvement (RPI) orders. The stream includes only regular order book liquidity. RPI orders are visible in private active order endpoints and in the exchange UI order book.

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Book ticker update object