ذرائع کی جانچ پر مبنی تحقیق: FIX DROP COPY Sequence

Decision Matrix

Source Map

• Coinbase Developer Documentation: Exchange FIX Drop Copy 5.0 (coinbase-exchange-drop-copy)
• Coinbase Developer Documentation: INTX FIX API Overview (coinbase-intx-fix-overview)
• Coinbase Developer Documentation: Exchange Upcoming Changes (coinbase-exchange-upcoming-changes)
• Coinbase Developer Documentation: Get single order (coinbase-get-single-order)

Control Notes

1. Session scope

Session scope is the decision point where public documentation must become an operating rule. In this package, it means drop copy coverage depends on the API key and session relationship described by the venue. The practical action is to record which keys, sessions and products are included before using the feed. The unresolved edge is whether a sub-account or separate key is outside the drop-copy stream, so the article keeps that edge explicit instead of turning it into a reward claim, licensing claim, approval claim, recovery guarantee, price implication, settlement guarantee or platform ranking.

2. Reset calendar

Reset calendar is the decision point where public documentation must become an operating rule. In this package, it means scheduled resets and logon resets can break naive sequence assumptions. The practical action is to write the reset calendar into the reconciliation runbook. The unresolved edge is how the desk proves no execution report was missed around reset, so the article keeps that edge explicit instead of turning it into a reward claim, licensing claim, approval claim, recovery guarantee, price implication, settlement guarantee or platform ranking.

The operating test is also narrow. A public page can prove public wording.

3. Connection limit

Connection limit is the decision point where public documentation must become an operating rule. In this package, it means single-connection limits create failover design constraints. The practical action is to assign ownership for the active drop-copy connection. The unresolved edge is what happens if monitoring and production compete for the same key, so the article keeps that edge explicit instead of turning it into a reward claim, licensing claim, approval claim, recovery guarantee, price implication, settlement guarantee or platform ranking.

The operating test is also narrow. A public page can prove public wording.

4. Execution-report coverage

Execution-report coverage is the decision point where public documentation must become an operating rule. In this package, it means drop copy is useful only if the desk understands which order routes it covers. The practical action is to compare FIX, REST and application routes against the documented coverage. The unresolved edge is whether manual actions or other portfolios appear in the same stream, so the article keeps that edge explicit instead of turning it into a reward claim, licensing claim, approval claim, recovery guarantee, price implication, settlement guarantee or platform ranking.

The operating test is also narrow. A public page can prove public wording.

5. Change notice

Change notice is the decision point where public documentation must become an operating rule. In this package, it means execution-report fields can change through documented venue updates. The practical action is to subscribe the parser owner to venue change notices and schema tests. The unresolved edge is which optional fields are safe to ignore after a change, so the article keeps that edge explicit instead of turning it into a reward claim, licensing claim, approval claim, recovery guarantee, price implication, settlement guarantee or platform ranking.

The operating test is also narrow. A public page can prove public wording.

6. Fallback lookup

Fallback lookup is the decision point where public documentation must become an operating rule. In this package, it means REST order lookup can support reconciliation but is not the same as a live feed. The practical action is to define when to query by order ID or client order ID after a gap. The unresolved edge is how permission scope or outages limit the fallback, so the article keeps that edge explicit instead of turning it into a reward claim, licensing claim, approval claim, recovery guarantee, price implication, settlement guarantee or platform ranking.

The operating test is also narrow. A public page can prove public wording.

Known Unknowns

• whether a sub-account or separate key is outside the drop-copy stream
• how the desk proves no execution report was missed around reset
• what happens if monitoring and production compete for the same key
• whether manual actions or other portfolios appear in the same stream
• which optional fields are safe to ignore after a change
• how permission scope or outages limit the fallback

Practical Takeaway

FIX drop copy and sequence-reset documentation is a reconciliation-control signal, not a guarantee that a trading desk has complete books. Coinbase Exchange says FIX Drop Copy provides execution reports for orders placed through associated FIX sessions or REST API keys, while Coinbase International Exchange says each connection establishes a new session and sequence-number set, with weekly resets and optional reset on logon. The radar outcome is to map session scope, reset calendar, single-connection limit, execution-report coverage, client-order-ID handling, REST order lookup and gap recovery before relying on drop copy as the sole audit trail. The article stops at the evidence boundary. It helps the reader decide what to inspect next without converting public documentation into a promise that a private account, wallet, callback, policy framework, settlement route or liquidity position will work under every future condition.