Challenge: decrypt the message in the blue banners.
How?
The string probably has error-checking/correction within it so you don't need the blocked out bits.
>>58912411
This is gay
https://en.wikipedia.org/wiki/Threefish
>>58912411
Seems to be 'tegen de stroom in' repeating, is this some sort of swampgerman?
>>58913141
>swampgerman
Dutch, so yes.