<p>Not necessarily answering your question, but I found a HashCash implementation in Java already here: <a href="https://github.com/ryancwilliams/JHashCash" rel="nofollow">https://github.com/ryancwilliams/JHashCash</a> Perhaps you can contribute or fork it?</p>

CC BY-SA 3.0
2015-09-07T21:48:04.200Z
2015-09-07T21:48:04.200Z
RommelTJ
<p>I would like to implement HashCash in an efficient/fast/garbage-free way. Is there a spec to do so? How can someone go by implementing HashCash from scratch? </p>

CC BY-SA 3.0
2015-09-03T14:32:03.063Z
Not necessarily a spec, but possibly helpful for you: https://en.bitcoin.it/wiki/Hashcash
morsecoder
<hash><proof-of-work>
Where is the spec of HashCash so that I can implement it in Java from scratch?
Peter Mel
# Where is the spec of HashCash so that I can implement it in Java from scratch?

(Asked by: username_0 on 2015-09-03)

I would like to implement HashCash in an efficient/fast/garbage-free way. Is there a spec to do so? How can someone go by implementing HashCash from scratch?

**Tags:** hash, proof-of-work

> **Comments:**
> **username_1**: Not necessarily a spec, but possibly helpful for you: https://en.bitcoin.it/wiki/Hashcash  

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## 1 answers

### Answer by username_2 on 2015-09-07. Score: 0 | Accepted answer

Not necessarily answering your question, but I found a HashCash implementation in Java already here: <https://github.com/ryancwilliams/JHashCash> Perhaps you can contribute or fork it?


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