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I was actually quite curious about that and I found this. >With a JS challenge, Cloudflare presents challenge page that requires no interaction from a visitor,
by milsorgen 3y ago
I was actually quite curious about that and I found this.
>With a JS challenge, Cloudflare presents challenge page that requires no interaction from a visitor, but rather JavaScript processing by their browser.
>The visitor will have to wait until their browser finishes processing the JavaScript, which should be less than five seconds.
https://developers.cloudflare.com/fundamentals/get-started/concepts/cloudflare-challenges/#js-challenge https://developers.cloudflare.com/fundamentals/get-started/c...
- kragen 3y agothat permits both possibilities
- throwitaway156 3y agoWebGL, an important part of browser fingerprinting, takes a long time. Im sure there are other APIs being 'abused' for this purpose that take a while. This doesnt quite prove the PoW.