In fact, the rule stating that the winning nation hosted the next year's Eurovision had not yet been conceived, and it was planned at the time that each participating country would take it in turns to host the event.
In fact, not only were the official 1956 scores withheld, but the rule stating that the winning nation hosts the next year's Eurovision Song Contest had not yet been conceived. It was planned at the time that each participating country would take it in turns to host the event.