=== HTTP code : 200 ===

Response headers
================
HTTP/2 200 
content-type: image/jpeg
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date: Wed, 28 Jun 2023 03:48:58 GMT
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Request headers
================
HEAD /image/twitter_name/w_36/QTRResearch.jpg HTTP/2
Host: cdn.substack.com
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.