ChatGPT serves ads. Here's the full attribution loop.
Summary
The article exposes how OpenAI's ChatGPT ad system injects in-conversation ad units via SSE and uses a Fernet-based four-token attribution loop to tie ad impressions to clicks. It details both sides of the flow (ChatGPT backend and merchant OAIQ SDK), token roles, and what to block to limit ad-event tracking. It offers practical implications for developers and security-conscious users.