No proof? LOL! The Wikipedia article is 25+ pages long, citing 192 different sources... not much proof there...
https://en.wikipedia.org/wiki/Evidence_of_common_descentTopics include:
A) Genetics
1) Universal biochemical organisation and molecular variance patterns
2) DNA sequencing
3) Endogenous retroviruses
4) Proteins
5) Pseudogenes
6) Other mechanisms
a) Specific examples
1) Chromosome 2 in humans
2) Cytochrome c and b
3) Recent African origin of modern humans
B) Evidence from comparative anatomy
1) Atavisms
2) Evolutionary developmental biology and embryonic development
3) Homologous structures and divergent (adaptive) evolution
4) Nested hierarchies and classification
5) Vestigial structures
C) Evidence from paleontology
...
D) Evidence from geographic distribution
...
E) Evidence from selection
...
F) Evidence from speciation
...
G) Evidence from computation and mathematical iteration
...
Is that not enough for you?
Read my lips. Theory of evolution. Not fact of evolution. Anybody can edit Wikipedia to say whatever he wants.