=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
X-XSS-Protection: 1; mode=block; report=https://www.google.com/appserve/security-bugs/log/youtube
Content-Type: text/html; charset=utf-8
Strict-Transport-Security: max-age=31536000
Expires: Tue, 27 Apr 1971 19:44:06 EST
X-Frame-Options: SAMEORIGIN
X-Content-Type-Options: nosniff
Cache-Control: no-cache
P3P: CP=&quot;This is not a P3P policy! See http://support.google.com/accounts/answer/151657?hl=en for more info.&quot;
Date: Fri, 25 Aug 2017 23:16:05 GMT
Server: YouTubeFrontEnd
Set-Cookie: VISITOR_INFO1_LIVE=EKYwuB9oYps; path=/; domain=.youtube.com; expires=Thu, 26-Apr-2018 11:09:05 GMT; httponly
Set-Cookie: YSC=qVrZJi9vUuY; path=/; domain=.youtube.com; httponly
Alt-Svc: quic=&quot;:443&quot;; ma=2592000; v=&quot;39,38,37,35&quot;
Accept-Ranges: none
Vary: Accept-Encoding
Connection: close

Request headers
================
HEAD /channel/UCSq9SgHhLMSOgTg_4RhadCQ HTTP/1.1
Host: www.youtube.com
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: */*
Referer: https://stacyjenelsmith.com
Connection: close


Link is valid.