The phrase "attest commitment" is correct and usable in written English.
It can be used when you want to express a formal declaration or confirmation of one's dedication or promise to a cause, task, or agreement.
Example: "The organization requires all members to attest commitment to the mission statement during the annual meeting."
Alternatives: "confirm dedication" or "affirm allegiance".
If Arcesilaus did not defend the possibility of living without beliefs by advocating a positive theory of action, we need to find another way to explain his attested commitment to the views that nothing can be known and that one should not form beliefs.
I can attest to his commitment in fact as well as words.
Having worked with many such organizations as an architect, I can attest to their commitment to this mission.
Close colleagues at Oxford University, where he is chancellor, attest to his commitment and his skill for communicating the broader purposes of the institution to wide audiences.
The best recommenders will be distinguished former professors, contacts who can attest to your commitment, work ethic, and who also know the field you're applying to intimately.
Attendance and participation were remarkable, attesting to the commitment of the members and the importance of the subject.
Responding to an interview request for this story, he sent an e-mail attesting to his commitment to maintaining the center's architectural character while attracting high-quality retailers, restaurants and entertainment establishments.
"The fact that you have chosen to be here in Bangkok rather than with the Presidential party in Tokyo at this time attests to your commitment to the cause of drug victims," he told her.
Providing Israel with $38 billion in military aid over a period of 10 years is unprecedented and only attests to the US' commitment.
His frequent traversals of Schubert's scores in the concert hall and on record attest to a deep commitment, a point underscored by this release of four sonatas taped live in recital.
