As most people probably know, It became possible for registrants to anonomise their public registrant information in recent decades. Prior to that, registrants were expected to provide their name, email and postal address. It is well known that Satoshi Nakamoto took great care to avoid revealing that sort of information.
The current information is
| domain | first registered | current registrant handle | current registrar |
|---|---|---|---|
| theymos.com | 2007-03-22 10:38:02 UTC | da67eca6ab82471b8d6a46e40fbe4aba-Namech | Namecheap |
| bitcoins.org | 2008-08-18 13:18:38 UTC | cdea5426c21b4918b56208da4581dce1-Namech | Namecheap |
| bitcoin.net | 2008-08-18 13:19:34 UTC | a464a2d7731d4a0bbf5f26ee90f3a827-Namech | Namecheap |
| bitcoin.org | 2008-08-18 13:19:55 UTC | 8f7963663ad1494095a60b9df1291853-Namech | Namecheap |
The last three were registered within two minutes and it is reasonable to infer they were registered by the same registrant using a single registrar.
I don’t see anything that links the bitcoin domains with theymos.com other than a common registrar used by very large numbers of people.
According to whoxy.com, in 2012 theymos.com was owned by a named individual through a US registrar? while bitcoin.org was owned by/through a Finnish business
Other sources suggest that control of bitcoin.org was transferred from Satoshi Nakamoto to others, perhaps eventually to Theymos and later to C0bra, believed to be the current registrant.
In 2013 Theymos said
The bitcoin.org domain name is jointly owned by me, Sirius, and an anonymous person. I am incapable of moving it without their consent.
I don’t know of any source of historical registration data, that was previously public and now redacted, that would provide any more information about the initial registrants of these domains.