"confirmation for" is correct and usable in written English.
You can use it as part of a question to ask for confirmation or evidence of something, e.g., "Can you provide confirmation for your claim?".
That's enough confirmation for Linda.
"It's a great confirmation for me after the French.
No independent confirmation for the figure was available.
Legal confirmation for the inherent rights of nature, with a coda and enforcement standards.
For those familiar with the film it will be a confirmation, for newcomers a revelation.
The confirmation for Torre came last week, the day after the Yankees returned from Japan.
On Monday, she will be No. 5. "That's a big confirmation for me," Henin said.
Despite having no independent confirmation for his story, he decided to broadcast it.
(Years later, Thompson advised Chief Justice John Roberts on his confirmation for the Supreme Court).
Whether these rumours are true, it is uncertain and don't expect official confirmation for some time.
There, Democratic presidents really have had a harder time winning Senate confirmation for their nominees.
