This is 100% correct, I got it from a Nirvana tab book.

Play this during both the verse and the chorus (distorted during chorus)

 E5 (022xxx@1)     G#5 (133xxx@4)     C#5 (x133xx@4)   A5 (x022xx@1)      C5 (x355xx@1)    D5 (xx023x@1)      B5 (x244xx@1)    D5 (xx023x@1)e-----------------|-----------------|-----------------|-----------------|
B-----------------|-----------------|-----------------|-----------------|
G-----------------|-----------------|---------2-2-2-2-|---------2-2-2-2-|
D-----------------|-6---6-6-2-2-2-2-|-5---5-5-0-0-0-0-|-4---4-4-0-0-0-0-|
A-2---2-2-6---6-6-|-4---4-4-0-0-0-0-|-3---3-3---------|-2---2-2---------|
E-0---0-0-4---4-4-|-----------------|-----------------|-----------------|

Bridge

 A5 (x022xx@1)       C5e-----------------| (x355xx@1)B-----------------|
G-----------------| Play this 
D---2---2---5---5-| 16 times
A---0---0---3---3-|
E-----------------|

End of Bridge

 D5 (xx023x@1)               B5e-----------------|-----------------|-----------------| (x244xx@1)B-----------------|-----------------|-----------------|
G-2---2-2-2-2-2-2-|-----------------|-----------------|
D-0---0-0-0-0-0-0-|-4---4-4-4-4-4-4-|-4-4-4-4-4-4-----|
A-----------------|-2---2-2-2-2-2-2-|-2-2-2-2-2-2-----|
E-----------------|-----------------|-------------3---|

Outro

  D5 (xx023x@1)              B5 (x244xx@1)                                E5e-----------------|-----------------|-----------------|----------------- (022xxx@1)B-----------------|-----------------|-----------------|-----------------
G-2---2-2-2-2-2-2-|-----------------|-----------------|-----------------
D-0---0-0-0-0-0-0-|-4---4-4-4-4-4-4-|-4-4-4-4-4-4-----|-2---------------
A-----------------|-2---2-2-2-2-2-2-|-2-2-2-2-2-2-----|-2---------------
E-----------------|-----------------|-------------3---|-0---------------