This is a gray area. The Internet Archive is designed for archival and research purposes. Kamen Rider 1971 is not in the public domain; it is owned by and Ishinomori Productions . Toei has historically been aggressive about removing this content from YouTube but has often turned a blind eye to the Internet Archive, as it does not generate ad revenue for uploaders.
The Legacy Lives On: Classic Kamen Rider (1971) Finds a New Home on the Internet Archive kamen rider 1971 internet archive new
This feature provides of Kamen Rider (1971 original series) hosted on the Internet Archive . It surfaces fresh uploads, better encodes, and potentially subtitled or raw episodes. This is a gray area