UPDATE April, 24th 2023
If you want to use services on the Internet, http is obsolete and you have to offer your site via https. On the dot. So the below still applies, but it is mandatory to offer https when using the Mastodon Verfier Service.
You don’t authenticate, nor do you have to pass any sensible, personal data to view it.
I don’t log hits, I don’t know about you having visited it.
I don’t sell, you don’t buy at this place - everything is free like the meaning of free beer.
That’s why it doesn’t have a certificate that costs my money.
That’s why it can be viewed using the http protocol.
That’s why it doesn’t serve the https protocol.
I hope that’s all right for you!