>>107505118
the way it actually works is a cute brown anime girl looks at you through your web cam to make sure you're not a bot

They show a gay anime drawing to humans and prevent you from visiting a site if you block JS. For actual bots they never see it bc they just scrape past it. It is nothing but a gay drawing viewer.

>>107505214
i hate how it doesnt save cookies and niggers up all the urls

>>107505118
>But how does the server know the correct hash? Does it also need to calculate them all?
The server doesn’t know the correct hash in advance and it doesn’t need to compute all possible hashes. It simply creates a signed challenge and sends it to the browser. The browser then brute-forces a nonce until the hash of challenge plus nonce meets the difficulty target. When the browser sends back its proposed nonce, the server performs just one cheap check: recompute that single hash and confirm it satisfies the target and that the challenge is valid. Because the client already did the expensive search, the server only verifies one candidate instead of calculating every possible hash.

>>107505267
That makes sense, thanks

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>>107505267
Now I'm talking Nonce-sense.

>>107505267
stop calling me nonce

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Seriously one of the cutest mascots ever. My heart jumps whenever I load up a page and she greets me.
I use the "powersave" CPU frequency scaling governor now in the hopes that the challenges take longer to process so I get to see her for just a little bit longer.

The hash calculation explanation doesn't make sense, scraper bots are running on Xeons and Epycs in datacenters with multi gigabit links that can do hashing really fast.

>>107505947
smug brat

>>107506563
and they want to scrape much more content than you could ever see in thousands of your lifetimes
see how fast that scales???