# OP\_NUMEQUALVERIFY

<figure><img src="/files/ovR1vr3pnmXhYQvbeM1Z" alt=""><figcaption></figcaption></figure>

**OP\_NUMEQUALVERIFY** only allows the script to continue processing if the top two data items on the stack have identical integer values. If the data items are not numerically equal, the opcode causes the script to terminate and fail. This is useful when values are being calculated which may finish with uncertain bytevector lengths.

| **Word**           | **Hex** | **Input** | **Output**     | **Description**                                                                                  |
| ------------------ | ------- | --------- | -------------- | ------------------------------------------------------------------------------------------------ |
| OP\_NUMEQUALVERIFY | 0x9d    | a b       | Nothing / fail | Returns true if numbers are equal, otherwise fails. More efficient than OP\_NUMEQUAL OP\_VERIFY. |

**Example:**

```
OP_4 OP_SPLIT OP_DROP OP_1 OP_NUMEQUALVERIFY
```


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