Both middlebox-dane.org and metafarce.com have DNS TLSA records that match their certificate from Let's Encrypt. You can do this, but almost no one is.
There is some pickup in The Netherlands where I live. For example, www.digid.nl has delpoyed DANE for HTTPS.
Once in Python
https://github.com/smutt/danish
And again in Rust.
https://github.com/smutt/danish-rust
An old explanation can be found here.
https://www.middlebox-dane.org/
Both middlebox-dane.org and metafarce.com have DNS TLSA records that match their certificate from Let's Encrypt. You can do this, but almost no one is.
There is some pickup in The Netherlands where I live. For example, www.digid.nl has delpoyed DANE for HTTPS.