I would also guess there's some watch time data access through the YouTube API, ... | Hacker News

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		throwaway3699 on April 21, 2021 \| parent \| context \| favorite \| on: SponsorBlock – Skip over sponsorship segments on Y... I would also guess there's some watch time data access through the YouTube API, too. Plus tracked links in those cards at the corner of a video.

ThatPlayer on April 21, 2021 [–]

YouTube does show the creator/uploader engagement throughout the video, so you can tell if there are less viewers for sponsor segments. My point is that info isn't necessarily shared through to the advertiser

throwaway3699 on April 22, 2021 | [–]

What I mean is, it's entirely possible for sponsors to ask for channel data.

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