My friend, it took me a few hours to find it -- there's zero documentation on Cloudflare about cloudflare supporting it, but it's supported [1], but godaddy luckily is a lot more vocal about it [2], here's the spec:

https://www.domainconnect.org/

Don't you hate it when you have a good idea and someone already did it, but also love it because it's validation of your good idea?

[1] https://www.godaddy.com/engineering/2019/04/25/domain-connec...

[2] https://dash.cloudflare.com/domainconnect/v2/domainTemplates...