CompletedSeason 2025

Obsidian Circuit VI

Closed season finale. Side-channel and lattice originals with public post-contest debrief.

Final standings locked

Prize pool$18,000

Registered teams203

Puzzles1

Window

8 Nov, 12:00 UTC → 10 Nov, 12:00 UTC

Sponsor

Community prize pool

Puzzle set

Tap a challenge to open the brief, artifacts, and flag submit. Demo verification runs client-side.

Title	Track	Diff	Pts	Solves	Open
Trace ResidueArchive challenge from Obsidian Circuit VI.	Side-Channel	Hard	300	41	Open →