I received the domains from an anonymous person who claimed to have worked with Satoshi in the early days. He claimed that Satoshi split up his assets before leaving in order to prevent too much centralization: The SourceForge project to Gavin, bitcoin.org to Sirius, and the two other domains to this anonymous person.
In this context, does "anonymous person" mean that you don't know his identity or that you know it but have reasons to not reveal it here?