derekross@desktop:~$ curl -I https://caughq.org/.well-known/nostr.json

curl: (7) Failed to connect to caughq.org port 443: Connection refused

derekross@desktop:~$ curl -I http://caughq.org/.well-known/nostr.json

HTTP/1.1 200 OK

Date: Sat, 04 Feb 2023 04:33:14 GMT

Server: Apache/2.4.29 (Ubuntu)

Last-Modified: Sat, 04 Feb 2023 03:42:12 GMT

ETag: "65-5f3d7954f6020"

Accept-Ranges: bytes

Content-Length: 101

Access-Control-Allow-Origin: *

Content-Type: application/json

You do have CORS setup, but like I said above, you're missing an SSL cert. Once you fix that you'll be fine. Your JSON looks correct too.