Correct

确证

/ quèzhèng / 
Strokes

Definition

to prove/to confirm/to corroborate/convincing proof

Example

As a Verb

conclusively/positively prove

1
Shìshí
事实
yǐjīng
已经
quèzhèng
确证
le
了
zhège
这个
lǐlùn
理论
  
。

Facts have positively proved the theory.

As a Noun

conclusive/positive/tangible/undeniable/definite/decisive proof; conclusive/solid/substantial/concrete/hard evidence; proof positive

2
Zhǎngwò
掌握
quèzhèng
确证

hold definite proofs

3
Ná
拿
chū
出
quèzhèng
确证

produce/give/offer/present/provide/furnish conclusive proof