Brand
on dark
on light
Two interlocking rounded strokes. It is drawn as a vector that inherits the current text colour, so it stays sharp at any size and needs no separate file per colour.
DecentralCoin
DecentralAmerica
DecentralProp
DecentralScan
Cubensis Connect
DecentralScan and Decentral.Exchange both use the DecentralChain mark rather than one of their own, so the same glyph appearing twice in a lockup is correct rather than a mistake.
One sheet covering the construction grids both marks are built on, the icon system, the lockups, minimum sizes and the treatments to avoid. It is the reference the rules above are drawn from, so where this page summarises, the sheet is what it summarises.

Its do not panel covers stretching, rotation, recolouring and effects; the list above folds those together with the placement and minimum-size limits that come from the mark itself. The sheet carries the same 24px floor. Open it full size before you put either mark somewhere new, because the construction detail does not survive being scaled down.
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Decentral-America on GitHub
The repositories, and the source for everything described on this site.