Total auth checks
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One per page load, every visitor, every time
Residential free pass
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Not in any datacenter range — waved straight through
Known crawlers
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Google, Bing, embeds — UA-matched, zero friction
Datacenter IPs flagged
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AWS · Azure · GCP · Hetzner · Tor and friends
Humans verified
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Answered the question, got a cookie, got in
Bounced
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Saw the question, decided the content wasn't worth it
Wrong answers
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Tried something, got it wrong, didn't come back