Affiliate tracking that survives ad blockers

Most affiliate tools lean on a single third-party cookie. The moment Safari's ITP, an ad blocker, or a cleared cache gets in the way, the click is lost and the affiliate never gets credit. affixo tracks the same conversion through four independent methods and takes the first one that resolves.

Four attribution methods, one resolved answer

affixo evaluates signals in priority order and credits the affiliate from whichever is available:

1. First-party cookie — a lightweight script sets a server-side, first-party cookie at checkout. No third-party request, so ITP and ad blockers don't break it.
2. Device fingerprint — a privacy-preserving device + browser signature links a visitor's click to their conversion when the cookie is gone.
3. IP resolution — a final network-level fallback for sessions where neither cookie nor fingerprint survive.
4. Coupon-code attribution — map a Stripe promotion code to an affiliate and the sale is credited with no cookie and no script at all — ideal for creators who share a code, not a link.

Every conversion is idempotently de-duplicated by Stripe event ID, so the same sale is never counted twice — even if two signals fire.

Numbers that stay correct after the sale

Attribution isn't a one-time event. affixo keeps each conversion reconciled to Stripe for its whole lifecycle:

• Refund → the commission claws back automatically.
• Churn → recurring commissions stop on the next period.
• Upgrade / downgrade → the commission reprices to the new amount.

Because every state change is driven by a Stripe webhook, your dashboard and the merchant's Stripe always agree — so the numbers stop being the thing affiliates and finance argue about.

Configurable per campaign

Attribution model (first-click or last-click) and the cookie window are set per campaign. Run a 60-day last-click program for content partners and a 7-day first-click program for paid traffic at the same time, under one account.

click  →  cookie set (first-party, server-side)
       →  fingerprint captured
       →  conversion (Stripe webhook)
       →  attributed  ✓   match: cookie  ·  model: last_click

Tracking goes live the moment you connect Stripe and drop in the script — no manual "verification" step, no nagging banner. Run the built-in test and watch a click → conversion → payment resolve green end to end.