출처 검증 리서치: Coinbase VS OKX SELF

Decision outcome: Use either venue only after documenting the STP mode, taker/resting order priority, WebSocket or order-event reason, cancellation accounting and a stop rule for unexpected self-trade-prevention outcomes.

Evidence snapshot. This article was researched at 2026-09-21T02:37:26.000Z using Coinbase Developer Documentation, OKX API Documentation. A local queue, old generated draft, search snippet, social repost, price chart or AI summary was not treated as proof. Those surfaces can suggest a question, but every material claim below maps to the public source list for this article.

Verified facts. Claim c1: Coinbase Exchange documentation says self-trading is not allowed and the STP instruction on the taker order takes precedence over the older resting order. Claim c2: Coinbase lists STP flags for decrement and cancel, cancel oldest, cancel newest and cancel both. Claim c3: Coinbase WebSocket documentation says STP can trigger change messages and authenticated done messages can include a cancel_reason for self-trade prevention. Claim c4: OKX API documentation describes STP modes including cancel maker and cancel taker, so the venue-specific order-side consequence must be recorded before automation relies on it. These facts are deliberately narrow. They do not prove personal eligibility, future availability, execution quality, legal status beyond the cited wording, tax treatment, account approval, customer support outcome, redemption success, price direction, liquidity depth or platform solvency.

Decision discipline for Coinbase vs OKX self-trade prevention order controls. The useful answer is not a universal winner. It is a source-bound scorecard: which official source answers the immediate question, which control is blank, which blank changes user risk, which test is reversible and which condition reopens the decision. An honest blank is safer than an invented advantage.

FAQ. What is the short answer? Coinbase and OKX both expose self-trade-prevention controls, but the operational decision is not whether STP exists. What should be verified first? Verify the official source and the exact control surface. What should not be inferred? Do not infer eligibility, future support, legal treatment, tax treatment, recovery, execution quality, liquidity, redemption, consumer protection or account approval. When should the user stop? Stop when source, object, user state, permission, route, issuer, jurisdiction or failure handling is unclear.