DC verse related information
we know there is the Golden Age universe that existed from 1938-1954, also known as Earth Two
In the Flash #123, it is revealed that Earth One and Earth Two operate in slightly different, parallel, universes as Barry Allen, and Jay Garrick meet each other.
Later, in Green Lantern (Vol. 2) #40, Alan Scott travels to Earth One because of a problem he wants help from Hal Jordan for
They battle Krona, and are told that he must travel the multiverse (which is infinite) because he tried to see creation, and it's the first time we see the Hand of Creation
now, on Crisis On Infinite Earths reveals to us that the Hand that Krona saw was not that of God, but that of the Anti-Monitor, and it was his act of observance, that created the Multiverse
However, by the end of the story (and the end of the Crisis), the Anti-Monitor was reaching through, and was met by the Spectres hand, which resulted to change the timeline and rewrote history so the DC Multiverse never happened at all
With the creation of the New 52 era, all time was rewritten for the universe
Krona was once again observed a hand at the beginning of creation, but this time, the hand was wearing a Green Lantern power ring
The power ring belonged to Volthoom, the First Lantern and top tier lantern, who bonded to the Great Heart and had the power to easily manipulate and rewrite time