If you stand on that block you can't jump but you can spin jump.
No credits nedded.
There's a few issues with this block. First off, you absolutely don't need to repeat the same code 6 times for the 6 labels you use it in, you can just have it once and put all the labels you need right before it. Second, most of these labels are unnecessary: if you want to make it work when Mario is standing on it, then you just need MarioAbove. A consequence of this is that jumping is disabled also when touching the block from the sides, which I assume it's unintended.
Finally, I think this is too specific for a submission, and besides that it can be already achieved with this block.