the present invention may be used for contract preparation and contract performance payment . a request for performance may be initiated to a provider by a buyer . a contract may be created by a provider at a first system terminal of a central operating and data base element for the performance . the contract may be transmitted with a signing instruction to the buyer . the signing instruction may be implemented to log on to a system terminal and to enter a user identification for reviewing the contract and for signing the contract . the contract may be performed by the provider and a bill may be transmitted to the buyer at a system terminal . a payment may be released for the contract to the provider at a system terminal .