By: Ezra Edelman

It is in base 4 the flag is found one you convert it to ascii. I could not find an online tool to do this, but there is plenty of code online to convert between bases, and plenty of web applets to convert common bases to ascii. Once this is done the flag will be revealed:

‘thesewordsareputheretofillspace.Thissentenceintentionallyleftblank.theflagis:whydoesnooneusebasefour’