Methods and arrangements for realising betting with off-line terminal

A terminal arrangement for a wagering system, comprising:

• an input device configured to receive a player's prediction of the outcome of an incident;
• a processor in communication with the input device, the processor configured to receive from the input device the player's prediction of the outcome of an incident, and further configured to generate an electronic wagering record that contains the player's prediction of the outcome of an incident;
• a transmitter in communication with the processor and configured to transmit the electronic wagering record to a central domain;
• a protected integrated circuit in communication with the processor, the protected integrated circuit configured to furnish the electronic wagering record, before the electronic wagering record is transmitted to the central domain, with a cryptographically protected time stamp of a certain moment in time associated with the generation of the electronic wagering record, wherein the protected integrated circuit further includes an internal clock signal source and is further configured to cryptographically combine the output of the internal clock signal source to the electronic wagering record that contains the prediction of the outcome of the certain incident;
• wherein the electronic wagering record will only be accepted as valid within the central domain if the cryptographically protected time stamp of a certain moment of time associated with the generation of the electronic wagering record shows that said certain moment of time was not later in time than an entry deadline before the outcome of the incident is known.