When you add a txt record to a domain, you need two things:
- Name of Record
- Text for record
For Dogecoin purposes:
- 'Name of Record' = Username
- 'Text for record' = Dogecoin Address
In the end you'll have a DNS zone record like this ->
Username.Domain.com
and when you call it within an wallet that uses TXT records, you'll recieve the Text attached to it. So when you write Username.Domain.com in the address bar, you'll be able to send coins to the address attached to it.
Please enjoy. See you on the moon!