Square dance with the same song how there are several versions of the dance, I do not know that is the original!

The same song, different people (dance team) choreography (original) movement is different, that is, there are multiple versions, there is no genuine non-genuine points. You can learn whichever version you like. Some dance teams don't have their own originals, they usually indicate who choreographed them in the uploaded video (some don't), so there may be differences from the original version, I understand that in this case it's not genuine. If you want to learn the correct movements it is best to find the original version to learn.