Mark · 2026
A B, and a star.
A solid B with a four-point star carved out of it, cut the way a Chinese seal is cut. Turn the star 45° and it becomes an X. It is also the AI sparkle ✦.
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01 / 04
The mark
One shape, three readings: B, X and the AI sparkle. Nothing else.
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02 / 04
Construction
Two stacked arcs, radius 18 over radius 20, so the weight sits low. The star sits on the centre line, turned 45° until it reads as an X.
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03 / 04
Colour and type
Graphite, iron, steel and mist, like a machined part. Set in Geist SemiBold, tracked tight.
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04 / 04
In use
It signs every app I make, from a menu bar item to the corner of the notch. It still reads at 16 px.
© 2026 Billy Xu. This mark is reserved for my own work. Please don’t use or adapt it.