21% of HubSpot's claims in the dataset are unsourced

HubSpot occupies its own category. 21% of claims are unsourced, but 17 carry a source name without a link, the highest named-but-unlinked count in the dataset. HubSpot has a sourcing culture and names authorities consistently. It does not close the loop with a URL. The gap between naming and linking is where most of the verification failure lives.