# OP\_NOP

<figure><img src="/files/1YeKcpHqX6XVsH5UlXEt" alt=""><figcaption></figcaption></figure>

**OP\_NOP** simply performs no action. It consumes nothing from the stack and leaves nothing on the stack. It can be used in sophisticated transaction templates to pad elements of a script or maintain size requirements.

| **Word** | **Hex** | **Input** | **Output** | **Description**                                                   |
| -------- | ------- | --------- | ---------- | ----------------------------------------------------------------- |
| OP\_NOP  | 0x61    | Nothing   | Nothing    | Does nothing. Can be used as a placeholder or for script padding. |

#### Example: Script Padding

```
<data> OP_NOP OP_HASH160 <hash> OP_EQUAL
```

OP\_NOP is used as a placeholder that could be replaced in future versions while maintaining script size compatibility.


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