What version/year issue of Bob Dylan's Blonde on Blonde does Spotify use?

[Jasonzaia]

Hey everyone! 

As some of you may know, the production used on Bob Dylan's Blonde on Blonde albums has quite an interesting history behind it. As it turns out it has been reissued, remastered, remixed countless times with many fans claiming specific versions of it to be far superior to others. All I'm asking is what version/year issue of Bob Dylan's Blonde on Blonde does Spotify use? I enjoy this version much more than the copy I bought in 2006. If anyone knows the answer, I would greatly appreciate them letting me know!