Hammerjump (also called hammeryump)
This is a very precise bombjump and is pretty hard to do because of the falling tiles.
You have to place the bomb on Y-pixel 48 and move Link to Y-pixel 40. The X-pixel doesn't really matter, but try to be as close to the chest as possible since if you're too far to the right to might not make the jump.
Hold ^ (UP) when mid-air.
You don't have to throw the bomb over to the platform, you can do this after you landed.
In a speedrun, this can save up to 35 seconds if done right.
Found by Japanese TASer Yuzuhara