<p><a href="https://en.wikipedia.org/wiki/GNU_Privacy_Guard" rel="nofollow">GPG = GNU Privacy Guard</a>, which is a public/private key signing/encryption system.</p>

<p>Your GPG Key ID is a short <a href="https://en.wikipedia.org/wiki/Public_key_fingerprint" rel="nofollow">fingerprint</a> of your public key. Presumably*, BTC Jam will look up your fingerprint on Bitcoin OTC, ask you to sign something to verify that you own it, and know that it can securely use your reputation from Bitcoin OTC to show that you are reputable.</p>

<p>*Hopefully they have you sign something specific like "BTC Jam user xyz is Bitcoin OTC user asd, timestamp 2014-04-09 20:00:00", otherwise you just go find the highest-reputation public key on Bitcoin OTC and say it's yours.</p>

CC BY-SA 3.0
2014-04-09T19:58:49.613Z
2014-04-09T19:58:49.613Z
Tim S.
<p>I was looking on BTC jam and I came across something called a GPG Key ID, do you know what it is?</p>

<p><img src="https://i.sstatic.net/LFzJX.png" alt="enter image description here"></p>

CC BY-SA 3.0
2014-04-09T22:30:46.820Z
This question appears to be off-topic because it is about GPG. Please at least try a websearch before asking here.
Murch
<websites>
What is a GPG Key ID?
Astad
# What is a GPG Key ID?

(Asked by: username_0 on 2014-04-09)

I was looking on BTC jam and I came across something called a GPG Key ID, do you know what it is?

![enter image description here](https://i.sstatic.net/LFzJX.png)

**Tags:** websites

> **Comments:**
> **username_1**: This question appears to be off-topic because it is about GPG. Please at least try a websearch before asking here.  

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## 1 answers

### Answer by username_2 on 2014-04-09. Score: 2 | Accepted answer

[GPG = GNU Privacy Guard](https://en.wikipedia.org/wiki/GNU_Privacy_Guard), which is a public/private key signing/encryption system.

Your GPG Key ID is a short [fingerprint](https://en.wikipedia.org/wiki/Public_key_fingerprint) of your public key. Presumably\*, BTC Jam will look up your fingerprint on Bitcoin OTC, ask you to sign something to verify that you own it, and know that it can securely use your reputation from Bitcoin OTC to show that you are reputable.

\*Hopefully they have you sign something specific like "BTC Jam user xyz is Bitcoin OTC user asd, timestamp 2014-04-09 20:00:00", otherwise you just go find the highest-reputation public key on Bitcoin OTC and say it's yours.


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