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WFN QUICK BRIEF · UNDER 1 MIN
The short version
MODE 2 OF 2
What the primary record establishes
The WebSocket sends an order-book snapshot followed by deltas. Kalshi’s seq counts messages on a subscription. If a level starts with 80 contracts, then loses 70 and gains 10, the correct result is 20. Missing the reduction leaves an erroneous 90. Kalshi WebSocket order book documentation ↗
What the distinction changes
One subscription can cover several markets. A sequence gap does not identify which market the missing message described. Request fresh snapshots for all subscribed markets or unsubscribe, await confirmation and subscribe again.
What to check before drawing a conclusion
Apply each returned snapshot as a replacement for the affected local book. A repeated subscribe for an existing market does not by itself resynchronize it. Log when the gap was detected and when clean snapshots were received so downstream decisions can be reviewed.
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WFN STORY COMPASS
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Original WFN vector illustrationWFN · 6 November 2026
Editorial noteSource-based explanation with original WFN analysis. Historical records retain their dates; numerical examples are illustrative. The original vector illustration is conceptual and is not documentary evidence.
WFN REALITY LEDGER
What is on the record?
Primary-source explainer
Primary-source explainer
Primary record / reference periodKalshi WebSocket order book documentation
The linked source supports the documented record; WFN interpretation and illustrative examples are separate.
01 · VERIFIED RECORD
What the primary record establishes
The WebSocket sends an order-book snapshot followed by deltas. Kalshi’s seq counts messages on a subscription. If a level starts with 80 contracts, then loses 70 and gains 10, the correct result is 20. Missing the reduction leaves an erroneous 90. Kalshi WebSocket order book documentation ↗
02 · WFN EDITORIAL ANALYSIS
What the distinction changes
One subscription can cover several markets. A sequence gap does not identify which market the missing message described. Request fresh snapshots for all subscribed markets or unsubscribe, await confirmation and subscribe again.
03 · REVIEW POINTS
What to check before drawing a conclusion
Apply each returned snapshot as a replacement for the affected local book. A repeated subscribe for an existing market does not by itself resynchronize it. Log when the gap was detected and when clean snapshots were received so downstream decisions can be reviewed.
