GBgbmor·May 7, 2020
> [2] https://github.com/007/hashcash
Looks like your repo is https://github.com/007/hashcash-js
But, cool! Thanks for sharing.
In Ask HN: Any good FOSS alternative to Google's reCAPTCHA?007
hashcash
HISTORICAL RECORD2020–2020
007 / hashcash · Not publicly available
hashcash
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2Mentions
0Explicit recommenders
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What it is
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Where it is used
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What people are saying
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by hour2 dated mentions
Observed mentions: 2020-05-06 22:20:53 UTC to 2020-05-07 01:57:43 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| May 6, 22:00 | 2020-05-06 22:00:00 UTC | 2020-05-06 23:00:00 UTC | 1 | 0 | 1 |
| May 6, 23:00 | 2020-05-06 23:00:00 UTC | 2020-05-07 00:00:00 UTC | 0 | 0 | 0 |
| May 7, 00:00 | 2020-05-07 00:00:00 UTC | 2020-05-07 01:00:00 UTC | 0 | 0 | 0 |
| May 7, 01:00 | 2020-05-07 01:00:00 UTC | 2020-05-07 02:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
2 sourcesDo you need a CAPTCHA? Or do you need to slow down / stop spammers? Consider hashcash [1] instead of CAPTCHA if #2 is your goal. It can be used in any place where real users interact with your site at almost zero effort on their behalf, and can slow down spamming enough to make you an unattractive target.
I have a terrible / incomplete / janky proof-of-concept version at [2] that you could build from, or you could find one that was built for your CMS / language du jour.
[1] https://en.wikipedia.org/wiki/Hashcash
[2] https://github.com/007/hashcash
In Ask HN: Any good FOSS alternative to Google's reCAPTCHA?