How To Become a Domain Name Registrar...

Wouldn’t it great to own a business like Godaddy or Network Solutions?
Yes, BUT… you must come prepared with tons of capital.
According to ICANN, the governing body for all domains, here are some financial considerations before you jump into this business:

Registrar Accreditation: Financial Considerations
There are additional financial considerations for registrars to do business with [...]

IDN Domain Names and Registration Primer...

IDN, or Internalized Domain Name is a relative new addition by ICANN.
It allows foreign language domains – such as Chinese, Janpanese, Spanish, Hebrew, etc.
For example, McDonalds.com translated to Chinese would be 麥當勞.com
So in foreign countries such as China computer users would simply type in 麥當勞.com in their browsers.  It is the browser’s job to [...]