I’m living proof nigga, it's pretty safe to say

from Bad Meets Evil – Living Proof Lyrics on Rap Genius

Meaning

This is a subliminal line as to pay tribute to proof. Royce pays credit to his death as part of a reason to reconcile their relationship. God graced this world by giving us “Proof” and then taking him away from us. God graced Royce by giving him success or his career and then he took it away. So Royce career is proof of Gods power and is literally a living example of Proof, something God gave and then took away.
Royce has proved that he won’t quit even if there is haters .
The vocals on this line also resemble Proof’s voice.

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