Дослідження з перевіркою джерел: Binance / OKX / Coinbase

Decision outcome: Do not trade from a local order book unless the bot can reject stale streams, rebuild after a gap and record a non-secret evidence trail. Treat missing checksum or sequence documentation as a production blocker for latency-sensitive strategies.

The evidence snapshot was taken at 2026-09-20T08:45:00.000Z. The source set for this package is Binance Developers, OKX API Docs, Coinbase Developer Docs, Coinbase Developer Docs. A local topic queue, a previous NexuAlpha page, a social repost, a price feed, a search snippet, a cached draft or a synthetic test was not treated as proof. Those inputs can suggest a question, but the article only makes claims that map to the public source list for this article.

Verified facts. Claim c1: Binance WebSocket documentation describes diff-depth streams and the need to combine event updates with an order book snapshot. Claim c2: OKX WebSocket documentation includes an order book channel and checksum-oriented book validation material for clients consuming market data. Claim c3: Coinbase WebSocket documentation separates subscription transport from order-management actions, so execution logic still needs explicit order reconciliation. Claim c4: No public WebSocket page proves that a user's local process detects every sequence gap, checksum mismatch or stale-data condition. Each claim is deliberately narrow. It does not prove personal eligibility, future availability, execution quality, regulatory status beyond the cited wording, tax treatment, recovery outcome, wallet safety, investment suitability, liquidity depth, or platform solvency.

SEO, AEO and GEO audit. The primary query is crypto exchange websocket sequence checksum gap recovery disclosure radar. The page uses named entities, dated evidence, source-mapped claims, a direct-answer block, a table, FAQ-style questions and a concise extractable summary. It is organized for people first and remains machine-readable for answer engines without hidden text, cloaking, keyword stuffing or separate machine-only content.

FAQ. What is the short answer? WebSocket market data is usable only when the client can prove continuity. What should be verified first? The official source and the exact user-control surface. What should not be inferred? Eligibility, future availability, recovery, tax treatment, execution quality, legal status beyond source wording or support outcome. When should the user stop? Stop when object identity, permission, account state, network path, source support or failure handling is unclear.