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Every conversion is credited server-side. When a sale or lead arrives — from the Stripe webhook or a /v1/track call — Affixo evaluates a chain of attribution methods in precedence order and stops at the first one that matches. A conversion is never credited to two affiliates, and the match is recorded on the conversion as match_method + match_confidence.

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The six methods

Listed in the default precedence (strongest, most explicit signal first). The order and which methods are enabled are configurable per workspace and per campaign under Admin → Attribution.
No method depends on a third-party cookie, so none of this breaks when a browser blocks them. Methods 1, 2, 4, 5 and 6 need nothing stored in the browser at all, and survive ad blockers and cookieless renewals outright.Method 3 is the one with a shelf life: it needs the visitor’s browser to still remember them. Safari and every iOS browser clear that storage after roughly 7 days without a return visit, so a click-based referral older than about a week falls through to the identity signals below on those browsers. Chrome, Edge and Firefox keep it for the full window you configure.

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Identity signals (beneath stored identity)

Two signals re-identify a returning visitor whose browser no longer remembers them, so the click method can still find their original click:
  • Device fingerprint — a SHA-256 hash of stable device characteristics.
  • IP address — matched within the attribution window.
These are not independent attribution methods — they feed method 3. They also power duplicate-affiliate and self-referral fraud detection.

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Precedence, idempotency, and reversals

  • First match wins. The chain runs in the configured order; the first enabled method that resolves an affiliate credits the sale and the rest are skipped.
  • Idempotent. Conversions dedupe on the Stripe event id (webhook) or your external_id (/v1/track) — safe to retry.
  • Reversals claw back automatically. A refund (charge.refunded) and a chargeback (charge.dispute.created) reverse the conversion and the commission it generated.

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Configure the chain

Reorder methods, toggle any of them off, or set a per-campaign override under Admin → Attribution. The self-attribution (manual-code) field is off by default because exposing it invites house sales to hunt for a code.