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Privacy Preserving Ad Click Attribution
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Privacy Preserving Ad Click Attribution

A popular business model for the web is to get attribution and payment for conversions, for instance purchases or sign-ups, which result from the click on an ad. Traditionally, such attribution has been facilitated by user identifying cookies sent in third-party HTTP requests to the click source. However, the same technology can be and has been used for privacy invasive cross-site tracking of users.

The technology described in this draft specification is intended to allow for ad click attribution while disallowing arbitrary cross-site tracking.


  • Support ad click attribution.

  • Preserve user privacy, specifically prevent cross-site tracking of users.



Link to spec:

Blog post with more background info:

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