An Illinois Short Form Authenticity Affidavit is a legal document signed by an individual or a representative of an organization to authenticate the accuracy of a document or certificate. This affidavit is commonly used in the state of Illinois to verify the legitimacy of documents in a court of law. The affidavit is notarized and signed by two witnesses. There are two main types of Illinois Short Form Authenticity Affidavits: the Individual Affidavit and the Corporate Affidavit. The Individual Affidavit is typically signed by an individual who is responsible for the accuracy of the document in question. This affidavit must include the individual's name, address, and contact information, as well as the name of the document to be authenticated. The Corporate Affidavit is typically signed by a representative of an organization, such as a board member or executive, who is responsible for the accuracy of the document in question. This affidavit must include the name of the organization, the name of the document to be authenticated, and the name and contact information of the signing representative. Both types of Illinois Short Form Authenticity Affidavits must be notarized and signed by two witnesses in order to be valid.