A | What I've Done- assistant engineer:
- Phillip Broussard, Jr.
- producer:
- Frederick "Rick" Rubin and Mike Shinoda
- vocals:
- Chester Bennington
- music videos:
- What I’ve Done by Linkin Park
- recording of:
- What I've Done
- lyricist and composer:
- Chester Bennington, Rob Bourdon, Bradford Phillip Delson, David Michael Farrell, Joseph “Joe” Hahn, Linkin Park and Mike Shinoda
- writer:
- Chester Bennington, Rob Bourdon, Brad Delson, Dave Farrell, Joseph “Joe” Hahn and Mike Shinoda
- publisher:
- Big Bad Mr. Hahn Music, Chesterchaz Publishing, Kenji Kobayashi Music, Nondisclosure Agreement Music, Pancakey Cakes Music, Rob Bourdon Music and Universal Music – Z Songs
| 4.1 | 3:29 |