altcha-org/altcha

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GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism.

3 mentions on Hacker News by 3 people: 2 stories, 1 comment · first 2024-08-08 · latest 2025-05-15

Mentions per year 3 mentions · busiest year 2025 (2)

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Altcha is a similar thing: https://github.com/altcha-org/altcha I recently implemented a very similar thing to its obfuscation via proof-of-work ( https://altcha.org/docs/obfuscation/ ) in my C++ REST backend and flutter front-end, and use…
comment by ralferoo · 2025-05-15 · in Forget IPs: using cryptography to verify bot and agent traffic