Sam,
There is a fork of the bitcoin blockchain specifically designed with this in
mind:
https://namecoin.info/
There has been also some academic work on using blockchain for domain name
concepts. See:
Providing better confidentiality and authentication on the Internet using
Namecoin and MinimaLT
Frederic Jacobs
http://arxiv.org/abs/1407.6453
Peer-to-Peer Networking and Applications
April 2015
Difficulty control for blockchain-based consensus systems
Daniel Kraft
http://link.springer.com/article/10.1007/s12083-015-0347-x
--
Professor Andrew A Adams [log in to unmask]
Professor at Graduate School of Business Administration, and
Deputy Director of the Centre for Business Information Ethics
Meiji University, Tokyo, Japan http://www.a-cubed.info/