# Changelog of YouTube Title & Thumbnail Change Monitor (`peterdrucker481/youtube-packaging-change-monitor`) Actor

- **URL**: https://apify.com/peterdrucker481/youtube-packaging-change-monitor/changelog.md
- **Full Actor documentation**: https://apify.com/peterdrucker481/youtube-packaging-change-monitor.md

### 1.2 — Keyless monitoring

- Added a no-key public-feed mode for titles, thumbnail hashes, view counts, and likes.
- Kept the optional official YouTube Data API mode for deeper metadata and up to 50 recent videos per channel.
- Added public handle resolution, source labeling, feed limits, and keyless Store health checks.

### 1.1 — Conversion and signal upgrade

- Added normal channel URLs and @handles as first-class inputs.
- Added optional developer-hosted API credentials to remove buyer setup friction.
- Added title/thumbnail rotation history, reused-variant and likely-test detection.
- Added deterministic signal scores, priority ranking, engagement context, multi-point response curves, and top-signal digests.
- Made the first baseline quiet and free; updated PPE around observations and actionable signals.

### 1.0 — Initial private build

- Added official YouTube Data API ingestion for recent channel uploads.
- Added content-hashed thumbnail preservation and title/thumbnail change events.
- Added observed pre/post view velocity, causal-safety labels, webhooks, and PPE hooks.