@carter@jonty Does DNS TXT have the same problem? If you can register a subdomain _atproto.example.com and create a TXT record for it, could you impersonate the parent domain example.com?
@bk1e sure, but if you have write access to the authoritative DNS records, you already have the keys to the kingdom. Whereas you can convince a hosting provider to serve a file at a given path pretty easily, it’s part of the product.
@carter Dynamic DNS providers allow customers to register hosts on their domains, and some might support TXT records. However, registering a host named _atproto is probably not allowed because the leading underscore makes it an invalid hostname.
Gregory's Server
@bk1e sure, but if you have write access to the authoritative DNS records, you already have the keys to the kingdom. Whereas you can convince a hosting provider to serve a file at a given path pretty easily, it’s part of the product.