<p><img src="https://i.sstatic.net/Jbz7k.jpg" alt="enter image description here"></p>

<p>Here's an interactive diagram showing the indivdual steps through the diagram:</p>

<ul>
<li><a href="http://staging.spectrum.ieee.org/static/how-a-bitcoin-transaction-works" rel="nofollow noreferrer">http://staging.spectrum.ieee.org/static/how-a-bitcoin-transaction-works</a></li>
</ul>

<p>A typical transaction (simplified) looks like:</p>

<pre><code>Spend:
   20 BTC from a transaction using address:ABC123 

To:
   10 BTC to address XYZ111
   10 BTC to address JKL222
</code></pre>

<p>Here XYZ111 is where you want to send your BTC to and JKL222 is <strong>your</strong> address for the change.</p>

<p>With transations like this you do not know (reliably) where your BTC are coming from. The next transaction will probably spend from JKL222 as ABC123 is all spent.</p>

<p>This in intentional in the Satoshi client so that it jumbles up the change and the sendee's addresses.</p>

CC BY-SA 3.0
2012-10-30T18:00:52.470Z
can you post a link to a bigger version of the image?
Jus12
CC BY-SA 3.0
2012-11-03T18:23:37.063Z
Hm ... they must have expired that URL.  Here: http://spectrum.ieee.org/img/06Bitcoin-1338412974774.jpg
Stephen Gornick
CC BY-SA 3.0
2012-09-27T06:31:24.787Z
2012-09-27T06:31:24.787Z
Stephen Gornick
<p>I gather that 2400 transactions fit into a 1 MB block.
That's 436 bytes per transaction record.
But what's in a transaction record?</p>

<p>Is there a good Powerpoint presentation that describes how Bitcoin transactions work?</p>

<p>Thanks.</p>

CC BY-SA 3.0
2012-09-27T01:47:03.300Z
Related: http://bitcoin.stackexchange.com/q/1195/516
Highly Irregular
<transactions>
What does a Bitcoin transaction consist of?
Mithras
# What does a Bitcoin transaction consist of?

(Asked by: username_0 on 2012-09-27)

I gather that 2400 transactions fit into a 1 MB block.
That's 436 bytes per transaction record.
But what's in a transaction record?

Is there a good Powerpoint presentation that describes how Bitcoin transactions work?

Thanks.

**Tags:** transactions

> **Comments:**
> **username_1**: Related: http://bitcoin.stackexchange.com/q/1195/516  

---

## 1 answers

### Answer by username_2 on 2012-09-27. Score: 3

![enter image description here](https://i.sstatic.net/Jbz7k.jpg)

Here's an interactive diagram showing the indivdual steps through the diagram:

* <http://staging.spectrum.ieee.org/static/how-a-bitcoin-transaction-works>

A typical transaction (simplified) looks like:

```
Spend:
   20 BTC from a transaction using address:ABC123 

To:
   10 BTC to address XYZ111
   10 BTC to address JKL222

```

Here XYZ111 is where you want to send your BTC to and JKL222 is **your** address for the change.

With transations like this you do not know (reliably) where your BTC are coming from. The next transaction will probably spend from JKL222 as ABC123 is all spent.

This in intentional in the Satoshi client so that it jumbles up the change and the sendee's addresses.

> **Comments:**
> **username_3**: can you post a link to a bigger version of the image?  
> **username_2**: Hm ... they must have expired that URL.  Here: http://spectrum.ieee.org/img/06Bitcoin-1338412974774.jpg  

---

