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Captcha-replacement - https://hashcash.io/ https://hashcash.io/
by hippich 10y ago
Captcha-replacement - https://hashcash.io/ https://hashcash.io/
- spullara 10y agoSeems interesting but failed for me in Safari.
- foobiekr 10y agothis is not a captcha replacement at all. the constraint on proof of work functions is that they are compatible with mobile users which puts an upper bound on the approach. custom work (even in the presence of scrambled approaches) and servers instead of mobiles both make this approach problematic.