Namecheap has gone down in history as the first domain Registrar to accept Bitcoin!
Wow, these are extremely exciting times we live in. This means anyone, anywhere at all can now pay for a domain anonymously… Which was the last true hurdle people had to face when buying domains if they were seeking privacy.
Full Disclosure: I was a Namecheap customer with hundreds of domains for over 5 years. I left namecheap about 3 years ago because of their lacking customer support, and bulk domain lower prices I found elsewhere. They are far more scrupulous than a host like GoDaddy, however, so I hold no ill will towards them.
How are they handling the conversion? Namecheap is using Bitpay. From their add funds page: