Untold Legend of the Batman is basically the "Year One" for the Silver Age Batman that existed from the early 60's until Crisis, Year One was the origin of the Batman who emerged from the new Earth after Crisis and lasted until the nu52 which rebooted the universe again and gave us the new origin in Zero Year. And as for now, "It all happened" so I guess multiple choice? Personally, I think the Red Hood Gang portion of Zero Year meshes fairly well with Year One so in my head that's the defacto origin.
Untold Legend of the Batman is basically the "Year One" for the Silver Age Batman that existed from the early 60's until Crisis, Year One was the origin of the Batman who emerged from the new Earth after Crisis and lasted until the nu52 which rebooted the universe again and gave us the new origin in Zero Year. And as for now, "It all happened" so I guess multiple choice? Personally, I think the Red Hood Gang portion of Zero Year meshes fairly well with Year One so in my head that's the defacto origin.
Year One is still the foundation in my mind. The Knight - Year One - Zero Year (starting with "Dark City") would be what I consider canon for Rebirth Batman.
Pulls: Batman, Detective Comics, SiKtC, Catwoman, Nightwing, Titans, Godzilla, Wonder Woman, Batman & Robin, Brave and the Bold, No/One, Kill your Darlings, and Deviant.
My runs: Batman #230-, and Detective #420-