Abstract: A method implemented by an electronic verification system for verifying that an advertisement to engage in an activity is placed by a particular validated user whose identity is validated. The method comprises the electronic verification system receiving information that describes an advertisement to engage in an activity and that indicates when the particular validated user has or will place that advertisement. The method comprises creating referral information configured to be published in conjunction with the advertisement and to direct an advertisee to an electronic log of one or more advertisements placed by the particular validated user. The method comprises generating the electronic log to indicate when the particular validated user has or will place the advertisement described by the received information. The method comprises publishing the electronic log to be accessible in accordance with the referral information.