One issue when dealing with confidential informants is whether or not the government must disclose the identity of the informant. The issue of whether or not the government must disclose the identity of the confidential informant sometimes turns on whether the informant is a "mere tipster" or an actually participant in the transaction.
This form is a generic example that may be referred to when preparing such a form for your particular state. It is for illustrative purposes only. Local laws should be consulted to determine any specific requirements for such a form in a particular jurisdiction.