<p>This should produce identical output:</p>

<pre><code>$ echo -n "HI 71592" | shasum -a 256
0000ca92719894f1444e485036aabed9f9223b6bb06928a3561567c821424a41
</code></pre>

CC BY-SA 3.0
2017-09-30T16:57:09.343Z
2017-09-30T16:57:09.343Z
Nick ODell
<p>I'm looking for a program or something to run from the terminal in mac.
That does the same thing as the program found here. <a href="http://www.blockchain-basics.com/HashPuzzle.html?nonce=221" rel="nofollow noreferrer">http://www.blockchain-basics.com/HashPuzzle.html?nonce=221</a></p>

<p>What I'm looking for is the ability to check how many times a hash using the same hash- Noucing up has two leading zeros. I want to be able to list each hash for 20 hashing of two leading zeros.</p>

<p>Eg. "HI 183" hashed has two leading zeros
Eg. "HI 2121" hashed has two leading zeros.</p>

<proof-of-work>
Hashcash proof of work bitcoin sha256
Food Warrior
# Hashcash proof of work bitcoin sha256

(Asked by: username_0 on 2017-09-30)

I'm looking for a program or something to run from the terminal in mac.
That does the same thing as the program found here. <http://www.blockchain-basics.com/HashPuzzle.html?nonce=221>

What I'm looking for is the ability to check how many times a hash using the same hash- Noucing up has two leading zeros. I want to be able to list each hash for 20 hashing of two leading zeros.

Eg. "HI 183" hashed has two leading zeros
Eg. "HI 2121" hashed has two leading zeros.

**Tags:** proof-of-work


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## 1 answers

### Answer by username_1 on 2017-09-30. Score: 1

This should produce identical output:

```
$ echo -n "HI 71592" | shasum -a 256
0000ca92719894f1444e485036aabed9f9223b6bb06928a3561567c821424a41

```


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