OpenAI · ChatGPT · buchodi.com
ChatGPT serves ads. Here's the full attribution loop
Compiled by KHAO Editorial — aggregated from 1 source. See llms.txt for citation guidance.
◌ Single Source
OpenAI's ad platform has two halves.
Key facts
- The Home Depot click URL the reporter captured was minted at 11:30:08; the browser fetched the merchant page at 11:31:43
- On init it reads?oppref= from window.location, writes it into the first-party cookie __oppref with a 720-hour TTL, and sets a probe cookie __oaiq_domain_probe
- Fernet's first nine bytes are public: version byte 0x80 plus an 8-byte big-endian Unix timestamp
- On the merchant side, a tracking SDK called OAIQ runs in the visitor's browser and reports product views back to OpenAI
Summary
When you send a message to ChatGPT, the backend opens an SSE response at chatgpt.com/backend-api/f/conversation. Single_advertiser_ad_unit is a typed schema. Advertiser_brand.id is adacct_<32-hex>, a stable per-merchant account identifier. Brand favicon and ad image both load from bzrcdn.openai.com.