DeShaun Dupree Holton (October 2, 1973 – April 11, 2006), known professionally as Proof, was an American rapper from Detroit, Michigan. During his career, he was a member of the groups 5 Elementz, Funky Cowboys, Promatic, Goon Sqwad, and D12. He was a close childhood friend of rapper Eminem, who also lived in Detroit. Proof was often a hype man at Eminem's concerts.

DeShaun Dupree Holton was born to Sharallene "Pepper" Holton, a single mother. His father, McKinley Jackson, was a music producer who left to pursue his career prior to Holton's birth. DeShaun was close friends with Eminem from a young age.

Originally known as Maximum, under the moniker "Proof", Holton first rose to national prominence when he formed D12 "The Dirty Dozen" in 1995 with his friends Eminem, Bizarre, Mr. Porter, and a high school friend Eye-Kyu. Shortly after that, Proof recruited two friends, B-Flat & Dirty Ratt, to the group. This created the first lineup of Proof's supergroup D12. Eventually this first incarnation of the group back in early 1996 because the original members of D12, Eye-Kyu, B-Flat, and Dirty Ratt, were more focused on recording music with their other groups. Bizarre, Denaun, and Eminem, could not make it to the studio sessions because they were also working with their other groups. Proof decided to break up this version of the group in 1996. Proof later reformed the group in mid-1996. This time Proof called Bizarre and Eminem, since they were available. He also asked Denaun, who said he would not return to the group unless they recruit an affiliate and friend of the group, Kuniva. Proof allowed Denaun to put Kuniva in the group since all the members at the time were already friends with Kuniva . Then Bizarre decided one of Proof's friends, who was a rapper (from 6th Mile, Detroit) named MC Bugz, should be in the group. Bugz was also a childhood friend of B-Flat and Dirty Ratt, who had previously parted ways with D12. Early individual accomplishments included being featured in The Source's "Unsigned Hype" column in 1999 and nearly winning the 1998 Blaze Battle. His first television appearance was in the video for Aaliyah's "Age Ain't Nothing But a Number".

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