Do you attest or affirm a signature?

To attest a signature means to verify its authenticity and confirm that the signer is who they claim to be, often in the presence of a witness. In contrast, affirming a signature typically refers to acknowledging the validity of the document rather than the signature itself. Generally, attestation involves a more formal process, usually requiring a notary or witness, while affirmation can be less formal. Both processes serve to enhance the credibility of the document.