Attestation (noun)

The act of bearing witness to or providing evidence for the truth or authenticity of something.

Origin:

Late middle english (in the sense "testimony, witness"): from old french, from attester "to bear witness", from latin attestari, from ad- "to" + testari "to bear witness".

Examples:

1. The attestation of the will was required before it could be admitted to probate.
2. The attestation of the document was required by the court before it could be used as evidence.
3. The attestation was provided by several witnesses who saw the accident.
4. The attestation of the qualifications was required by the employer before the candidate could be hired.
5. The attestation of the signature was required on the loan application before it could be processed.