This reminds me somewhat of the old 'Youcann' movement (an alternative DNS system, though that was still centralized)

I'm definitively looking for something that's accessible to the general public, so I don't think it's an option in my case (I'd probably also use the domain for my own email, etc.)

Still, appreciate the suggestion - thanks.

If I register a “commercial” TLD can my customers on the regular internet access the handshake TLD ? Based on the documentation it looks like the person accessing these need to change the device DNS settings.