Is the bliss copy of the Gettysburg address the official copy?

The Bliss copy of the Gettysburg Address is one of five known handwritten copies made by Abraham Lincoln. It is considered the most authoritative version, as it is the only copy that Lincoln is believed to have presented publicly. However, there is no single "official" version of the address, as Lincoln delivered it as a speech, and various transcriptions exist. The Bliss copy is highly regarded and is displayed at the White House.