The phrase "as convincing proof" is correct and usable in written English.
It can be used when you want to emphasize that something serves as strong evidence or support for a claim or argument.
Example: "The results of the experiment were presented as convincing proof of the theory's validity."
Alternatives: "as compelling evidence" or "as strong justification".
"In this environment of academic excellence, of professional and disciplined cooperation, where even our armed services are involved, it is impossible that CEFAA was to make a statement such as it was written...without totally convincing proof".
As the result of this test was indeed negative, we find the statistical evidence as convincing as it can be although the final proof, of course, can only be experimental.
Jay Z will have noticed YouTube's phenomenal success as a music platform; it provides fairly convincing proof that consumers, particularly younger ones, don't care that much about fidelity.
If any part of global warming can be attributed to the actions of humans then this, by itself, constitutes certain and convincing proof that the human population, living as we do, has exceeded the carrying capacity of the Earth, a situation that is clearly not sustainable.
And — an oddly convincing proof of its staying power — quite a bit of it is as flat as Kansas and clumsily phrased to boot.
Selective vitamin D receptor modulators are a potentially interesting new class of chemopreventive and chemotherapeutic agents as demonstrated by several first generation analogs have provided a convincing proof of concept.
Charles Holden described Pick's management of meetings: "Here his decisions were those of a benevolent dictator, and the members left the meeting with a clear sense of a task to be performed, difficult, perhaps, and sometimes impossible, as might subsequently prove to be, but usually well worth exploring if only in producing convincing proof of obstacles.
But convincing proof was lacking.
Possibly, but there isn't yet convincing proof of it.
The requirement of clear and convincing proof, he wrote, applies only to factual questions typically decided by juries, such as when a product was first sold.
