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ProofOfDonation, replace CAPTCHAs with charity donations
Observed stack evidence
- discussion=https://news.ycombinator.com/item?id=49681679, title=Show HN: ProofOfDonation, replace CAPTCHAs with charity donations, Hey, I made this self-hosted server called proof-of-donation, as an experimental alternative to CAPTCHA. It verifies email donation receipts using DKIM. Instead having users solve puzzles, you can gate signups on charity donations. Let me know what you think :)
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