actions/download-artifact joined the watched set.

{"event":"population_change","format_version":1,"population_change":{"change":"added","reason":{"type":"seed"}},"prev_hash":"sha256:4f64480042192239ba71e7e123dac2b12d8d91a55e5563fb8f388fd27f5c595d","recorded_at":"2026-09-29T18:53:44.590Z","repo":"actions/download-artifact","seq":7,"source_observations":["01M3Q88RXKVCXW467ZHWS4PZ30"]}

The SHA-256 of these bytes is this entry's hash (d7eb8451). The next entry begins with it. Change one byte, and the chain breaks.