An affidavit is a written statement of fact that is sworn to be true by the person making it. It is typically used as evidence in court proceedings or legal matters. The person making the affidavit, known as the affiant, must sign the document in the presence of a notary public or other authorized official.

An affidavit is a formal written statement that is signed by the author under oath or affirmation before an authorized official. The following sentence provides an example of its use:

According to the wife's affidavit, the story that their child was missing and possibly aboard a homemade helium balloon was a hoax and publicity stunt.
The class that turned in all their affadavits first won a pizza party.

After the affidavit, the next step in legal proceedings is typically a rebuttal affidavit. This allows the opposing party to address and dispute the claims made in the initial affidavit.

Do you mean an affidavit? It is a statement of something that you sign as to its truth.

An affidavit that states the heirs of a decedent. An Affidavit of Heirship is used instead of probate when a person dies without a will.

http://www.heirship.com/2009/11/affidavit-of-heirship.html