=== HTTP code : 200 ===

Response headers
================
HTTP/2 200 
accept-ranges: bytes
access-control-allow-origin: https://esp.ethereum.foundation
age: 186463
cache-control: public, max-age=0, must-revalidate
content-type: text/html; charset=UTF-8
date: Wed, 07 Jun 2023 22:59:17 GMT
etag: &quot;0f32b59500b47683853efb723c1c1468-ssl&quot;
referrer-policy: same-origin
server: Netlify
strict-transport-security: max-age=31536000
x-content-type-options: nosniff
x-frame-options: DENY
x-nf-request-id: 01H2C1BZ0SJFF9HQZ7T22FKCGA
x-xss-protection: 1; mode=block
content-length: 310533

Request headers
================
HEAD /en/whitepaper/ HTTP/2
Host: ethereum.org
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.34 Safari/537.36
accept: */*
referer: https://cryptogrizz.com
connection: close


Link is valid.