I am not sure why Liberapay is qualified as 'obscure'. Their website's "legal" page [0] clearly identifies the organization and its legal representative, while providing contact details. The status of the non-profit organization can be verified in the French government's website [1].
[0]: https://en.liberapay.com/about/legal [1]: https://www.journal-officiel.gouv.fr/pages/associations-deta... - in French
I would expect that only a relatively small proportion of people would have heard of Liberapay, so I think calling them "obscure" is not wrong.