@richard gebhard#75379
Yes on the back testing. Lottodds updates the winning number every hrs after the State lottery agency displays the winners on their site. Thus, you can grab the next winner on the State website BEFORE lottodds updates it.
You could also just copy the numbers before the draw and compare them with the winners after the draw.
IF you want to know if a winner was a FLASHING/PURPLE number, you can simply look at the HIT/MISS chart. If there is a WIN+LHH/LLH then the number would have been flashing BEFORE the draw.