<p>decimal to hex, and then reversed ordering:</p>

<pre><code>$ echo "obase=16;2274467570" | bc
87919EF2
</code></pre>

<p>reversed:
87 91 9E F2 -> F2 9E 91 87</p>

CC BY-SA 3.0
2018-03-16T22:51:43.173Z
2018-03-16T22:51:43.173Z
pebwindkraft
<p>For example, if I run <code>bx base58check-decode</code> with the base58 encoded private key of <code>Kxj5ejwPg2s2ejZHW7N1zAydD4fkmFi9j19QRmgeVK9mXL3wFMmp</code> from this <a href="https://royalforkblog.github.io/2014/08/11/graphical-address-generator/#hello" rel="nofollow noreferrer">example</a>, I get the following:</p>

<p><code>
{
    checksum 2274467570
    payload 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b982401
    version 128
}</code></p>

<p>The payload, as well as the version, make sense to me; however, if I convert the checksum to a hex, it doesn't match the checksum of F29E9187 that I'm expecting, i.e., I understand how to form it per this <a href="https://bitcoin.stackexchange.com/questions/51970/how-to-generate-a-bitcoin-private-key-checksum">question</a>. But I don't understand how 2274467570 and F29E9187 are related.</p>

<checksum>
Mastering Bitcoin: Where is the checksum coming from when running bx base58check-decode?
Kevin
# Mastering Bitcoin: Where is the checksum coming from when running bx base58check-decode?

(Asked by: username_0 on 2018-03-16)

For example, if I run `bx base58check-decode` with the base58 encoded private key of `Kxj5ejwPg2s2ejZHW7N1zAydD4fkmFi9j19QRmgeVK9mXL3wFMmp` from this [example](https://royalforkblog.github.io/2014/08/11/graphical-address-generator/#hello), I get the following:

`{
checksum 2274467570
payload 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b982401
version 128
}`

The payload, as well as the version, make sense to me; however, if I convert the checksum to a hex, it doesn't match the checksum of F29E9187 that I'm expecting, i.e., I understand how to form it per this [question](https://bitcoin.stackexchange.com/questions/51970/how-to-generate-a-bitcoin-private-key-checksum). But I don't understand how 2274467570 and F29E9187 are related.

**Tags:** checksum


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## 1 answers

### Answer by username_1 on 2018-03-16. Score: 1 | Accepted answer

decimal to hex, and then reversed ordering:
$ echo "obase=16;2274467570" | bc
87919EF2

reversed:
87 91 9E F2 -> F2 9E 91 87


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