...
and the .txt .. it has been suggested that this refers to the white paper.. I don't think so.
It could be but we do not have any other hints for that.
It could be the Duality paper. There it is said :  " Why 21 Million? The truth is, it was an educated guess"

TheTruthIs,ItWasAnEducatedGuess.  - 18BjpBsmfniFYJGK2jf1AH5yZG6rxTN7AA  (we need the "," and "." to make 32???)

Or maybe the ".txt" refers to the simple text (ASCII) format on computers...

TheAsciiCodesWillShowYouTheWayIn - 1LoUDbXF2Fhzu8JCDJv6rHMGAsoP1YbEZP   (9 words :-(  )
SatoshiNakamotoWillShowItInAscii  - 1C8ewS6ABYSS5yAj4DxqGRHyhzTjwYL8Qa   (only 7 words :-( )
ItIsSatoshiNakamotoButPutInAscii - 1DWqZ4svqmeY6cw7vvFK7bs6AKPWzmHNjD ..

(Python is working super,  finding solution not so much)

But Thanks anyway guys for the nice tool :-)