This event was distributed by CoroCoro as a Limited Serial Code Event.
A Charizard was chosen to be distributed, as it's described as CoroCoro No.1 Most Popular Pokemon.
It's interesting to note that the Trainer ID 565640, represents CoroCoro 40.
5 [Go] sounds like Co, and 6 [Roku] first syllable is Ro.
Format Ver.1.0.5-4, Post Updated Date:20171105_1537