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A comment on mCaptcha: Open-source proof-of-work captcha for websites. Parent comment

Re:mCaptcha: Open-source proof-of-work captcha for websites by est on Tuesday August 08, 2023 @10:50PM (#37058168)
> Is server hardware vastly more powerful?

Actually no. The server CPU has lower GHz and server memory is slower due to ECC.

But server has lotta more bandwidth to handle concurrent processing.

[ Parent | on HN ]
Re:mCaptcha: Open-source proof-of-work captcha for websites by xxs on Wednesday August 09, 2023 @03:03AM (#37059526)
That would work for some desktop and very few laptops only... and only if the task cannot be ported to GPU. Other than that Javascript code would be ported to C.

This very case is far worse as it uses SHA-256, all that bitcoin asics love.

[ Parent | on HN ]
Re:mCaptcha: Open-source proof-of-work captcha for websites by remram on Wednesday August 09, 2023 @12:17PM (#37064912)
The average user is on a 3-year-old Android phone with 40% battery. The average server has 32 processors and industrial-grade cooling.

Sure, it is possible that your gaming PC beats the average server in terms of CPU frequency. But that's not what the average website visitor is using, and you can't scale the proof-of-work out of their reach.

[ Parent | on HN ]