HistoryThe Blade Beam (also commonly known as beam blade) was an attack in the pre-release version of Ocarina of Time, where a beam would shoot out of Link's sword.
Twice has the beam blade been restored, once by Dark_Link-77, and again by sakura89 and spinout.
In May 2007, Dark_Link-77 stumbled upon the beam blade while browsing through display lists within gameplay_keep in Utility of Time. After this find, he replaced the display list used for the large spin attack with the beam blade's display list, though there were some errors and thus it was buggy. To fix the animation, DL77 used a GS code. While it was not perfectly restored, it was a amazing at the time. It's errors, however, lead to sakura89 and spinout's re-doing of the beam blade restoration.
sakura89 and spinout's Restoration
In 2008 sakura89 found where the LUI/ADDIU that loaded the polygon data for the secondary spin attack, and she re-pointed them so their immediate value was that of the old beam blade. Building off of this, spinout changed the animation that link used for the second spin attack to that of link stabbing, thus instead of spinning link gave a stab motion. Together, the beam blade was fixed, and the whole restoration only required 8 bytes total to be changed. A patch can be found here.
A Full Correct Restoration
As of currently there is no true restoration of the blade beam attack without having to replace the spinattack and use the proper animations.