yKzQ9l3

Back to LIGATURE • Original image

Notice: It may be possible that this puzzle was retconned, as a very familiar image was found in the announcement video for the Sigma Initiative. Check IqQaorW.

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Clue from ρ.txt:

// ID ?.???

A lot of trail files are left over throughout the LIGATURE folder.

trail-1.121.ltr
trail.5.057.ltr
trail-4.081.ltr
trail-9.000.ltr
trail-7.051.ltr
trail-8.000.ltr
trail-6.108.ltr
trail-3.122.ltr
trail-2.075.ltr

All trails have x.yyy name. Collect yyy in order from 1 to 9:

121
075
122
081
057
108
051
000
000

Then, convert decimal into ASCII, and you get yKzQ9l3.