Quick stupid question on OP_NOTIF

[luv2drnkbr]

Can OP_NOTIF begin an if/else block?  That is, is the following code valid:

Code:

<true / false stack item>
OP_NOTIF
    <some script to be executed>
OP_ENDIF

Or does an if/else block need to always begin with an OP_IF?

I assume I am correct that you can begin with OP_NOTIF, and that the above script code is valid, but I wanted to double check.

[achow101]

That is correct, you can begin the block with OP_NOTIF.

[luv2drnkbr]

Thanks.  It would be cleaner to use OP_IF, but it saves redeemscript space to use NOTIF, and for Bitcoin I figure saving space is the way to go.