Canonical URL: https://chargezen.com/docs/spark/attribution/overview

# Attribution Overview

Understand how Spark! attributes sales to affiliates

Last updated: 2026-01-19

Attribution determines which affiliate gets credit for a sale. Spark! uses sophisticated tracking to ensure accurate attribution across devices, sessions, and time.

## How Attribution Works

1.  **Click Tracking** — When a visitor clicks an affiliate link, Spark! records the affiliate ID, timestamp, and device fingerprint
2.  **Cookie Storage** — A first-party cookie stores the referral information on your domain
3.  **Conversion Tracking** — When an order is placed, Spark! checks for referral cookies
4.  **Attribution Logic** — The configured attribution model determines which click gets credit
5.  **Commission Calculation** — Commission is calculated and credited to the winning affiliate

##### First-Party Tracking

Spark! uses first-party cookies (set on your domain) for reliable tracking. This avoids issues with third-party cookie blocking in Safari, Firefox, and other privacy-focused browsers.

## Attribution Models

[

### Last Click

Credit goes to the last affiliate link clicked before purchase

Learn more



](https://chargezen.com/docs/spark/attribution/models)[

### First Click

Credit goes to the affiliate who first introduced the customer

Learn more



](https://chargezen.com/docs/spark/attribution/models)[

### Linear

Credit is split equally among all affiliates in the journey

Learn more



](https://chargezen.com/docs/spark/attribution/models)

## Multi-Touch Attribution

For complex customer journeys with multiple affiliate touchpoints, Spark! tracks the entire path:

*   See all affiliates who contributed to a conversion
*   Understand the typical path to purchase
*   Identify which affiliates are better at introduction vs. closing
*   Configure custom attribution weights

## Cross-Device Tracking

Customers often start on mobile and convert on desktop. Spark! handles this through:

*   **Customer Accounts** — Link devices when customers log in
*   **Device Fingerprinting** — Statistical matching of devices
*   **Email Matching** — Connect journeys via checkout email

## Next Steps

[

### Attribution Models

Compare and configure attribution models

Learn more



](https://chargezen.com/docs/spark/attribution/models)[

### Cookie Settings

Configure cookie duration and type

Learn more



](https://chargezen.com/docs/spark/attribution/cookie-settings)

### Related Articles

[

#### Attribution Models

Compare different models



](https://chargezen.com/docs/spark/attribution/models)[

#### Cookie Settings

Configure tracking cookies



](https://chargezen.com/docs/spark/attribution/cookie-settings)

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