<p>It is the position of your txo in the outputs array of the transaction that created it. You can see that <a href="https://blockstream.info/testnet/tx/14272c8d1be80d57f122ee336a7da655c1443cf6f95a7cfdfad2a1163b2d1247?expand" rel="noreferrer">this transaction created 2 outputs</a> and that your output is the first one (<code>0</code>).<br />
This index is also sometimes refer to as <code>vout</code>.</p>

CC BY-SA 4.0
2020-12-23T14:37:33.797Z
2020-12-23T14:47:14.903Z
2020-12-23T14:47:14.903Z
Antoine Poinsot
<p>For example, here is the output of an API I hit with one of my testnet UTXOs. What is the meaning of the <code>index</code> field in this context ?</p>
<pre><code>&quot;utxo&quot;:[
    {
        &quot;block_id&quot;:1899516,
        &quot;transaction_hash&quot;:&quot;14272c8d1be80d57f122ee336a7da655c1443cf6f95a7cfdfad2a1163b2d1247&quot;,
        &quot;index&quot;:0,
        &quot;value&quot;:1943034
    }
]
</code></pre>

<transactions><utxo><output>
What does the index of an UTXO stand for?
stall man
# What does the index of an UTXO stand for?

(Asked by: username_0 on 2020-12-23)

For example, here is the output of an API I hit with one of my testnet UTXOs. What is the meaning of the `index` field in this context ?

```
"utxo":[
    {
        "block_id":1899516,
        "transaction_hash":"14272c8d1be80d57f122ee336a7da655c1443cf6f95a7cfdfad2a1163b2d1247",
        "index":0,
        "value":1943034
    }
]

```

**Tags:** transactions, utxo, output


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## 1 answers

### Answer by username_1 on 2020-12-23. Score: 5 | Accepted answer

It is the position of your txo in the outputs array of the transaction that created it. You can see that [this transaction created 2 outputs](https://blockstream.info/testnet/tx/14272c8d1be80d57f122ee336a7da655c1443cf6f95a7cfdfad2a1163b2d1247?expand) and that your output is the first one (`0`).  
This index is also sometimes refer to as `vout`.


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