You cannot create your own SSL certificate and expect it to work on the internet in the browser.
There was an effort once called the DANE but it failed so we have Let's Encrypt instead, which works well-enough.
Blockchains are slowly transferring us away from all the nightmare of DNS and SSL all that crap, so don't expect a lot of new RFCs that will allow your self-issued (not self-signed) certificates to evolve.
https://en.wikipedia.org/wiki/Self-signed_certificate
@matrix The Satanic pedophile elites don’t want you to know you can create and sign your own certificates. I have signed 487 certificates.