Accounting information is written in a recording medium A in which contents are to be recorded by way of pre-paid system, and money is withdrawn each time copying is operated. The copied title is read out from the recording medium A when the contents are downloaded from the service terminal connected to the contents service provider and transmitted to the contents service provider. A recording medium and information transmission system is thus capable of copying contents in a recording medium without troublesome user work and paying properly and automatically to the copyright holder and distributor.