1. A method of verifying an item of digital content ( 412, 416 ), the method comprising the steps of: providing, at a first time, an item of digital content ( 412, 416 ) to a verifying program ( 420 ); the verifying program ( 420 ) performing verification of the item of digital content ( 412, 416 ); and the verifying program ( 420 ) presenting a message ( 712, 724 ) to a user indicating whether the item of digital content ( 412, 416 ) is verified or not; characterised in that: the user provides, at a second time earlier than the first time, a data item ( 502 ) to the verifying program ( 420 ), the verifying program ( 420 ) stores the data item ( 502 ), and the data item ( 502 ), or data derived from the data item ( 502 ), is included in the message ( 712, 724 ) to indicate to the user that the item of digital content ( 412, 416 ) was verified by the verifying program ( 420 ).