Use this little website to test if a URL is setup correctly to work with CORS.
Shareable link: https://cors-test.codehappy.dev/?method=get&origin=https%3A%2F%2Fcors-test.codehappy.dev%2F&url=https%3A%2F%2Fivancarlos.com.br%2F.well-known%2Fnostr.json
These are the response headers received when making the request.
access-control-allow-origin: *
cf-cache-status: DYNAMIC
cf-ray: 8c57c160f793e267-ORD
connection: keep-alive
content-type: application/json
date: Thu, 19 Sep 2024 07:10:20 GMT
etag: W/"66beda3c-6b"
last-modified: Fri, 16 Aug 2024 04:49:00 GMT
server: cloudflare
transfer-encoding: chunked
vary: Accept-Encoding
CORS tester was built by @mscccc. The code is available on GitHub. Sponsored by HTML/CSS to Image.