The phrase "the bearer" is correct and usable in written English.
It can be used in contexts where you refer to someone who holds or carries something, often in legal or formal documents.
Example: "The bearer of this document is authorized to act on behalf of the company."
Alternatives: "the holder" or "the possessor."
Dictionary
the bearer
noun
One who, or that which, bears, sustains, or carries.
synonyms
Exact(60)
James, the bearer of that tattoo, laughed.
"Beware the bearer of gifts," he said.
But Infostrada is not always the bearer of glad tidings.
Sorry to be the bearer of bad news, folks.
After Muirfield, Mickelson is again the bearer of golfing joy.
He was the bearer of other highly conspicuous contemporary ambiguities.
At a deep subconscious level, the dompas dehumanised the bearer.
"I hate to be the bearer of bad news," the intern said.
Like it or not, they transform the bearer, and end the conversation in some fundamental way.
"I'm the bearer of many people's secrets about H.I.V.," Mr. Duane said.
"I'd love to be the bearer of good news for once".
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com