# OP\_EQUALVERIFY

\
**OP\_EQUALVERIFY** only allows the script to continue processing if the top two data items on the stack are identical bytevectors. If the data items are not equal, the opcode causes the script to terminate and fail. The opcode performs the same function as OP\_EQUAL OP\_VERIFY.

| **Word**        | **Hex** | **Input** | **Output**     | **Description**                                                                                                |
| --------------- | ------- | --------- | -------------- | -------------------------------------------------------------------------------------------------------------- |
| OP\_EQUALVERIFY | 0x88    | x1 x2     | Nothing / fail | Returns true if inputs are exactly equal (bitwise), otherwise fails. More efficient than OP\_EQUAL OP\_VERIFY. |

**Example:**

```
OP_2 OP_ADD OP_3 OP_EQUALVERIFY
```

If the integer value 1 is on the top of the stack when this snippet begins processing, the script will continue to process beyond OP\_EQUALVERIFY. If any other value is on top of the stack, the script will fail.


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