100% of net profits from this shirt go to the Bitcoin Red Team via OpenSats through December 31, 2026.

Sometimes the whole community answers the call at once. This tee celebrates the Bitcoin Red Team — the volunteer researchers who rallied in the wake of the Coldcard firmware exploit, tearing through hundreds of open-source projects to find the next vulnerability before it could claim anyone else. The slashing, brushstroke lettering captures the urgency of that moment: no committee, no permission, just a fast, defiant response from people who refuse to let sound money get broken by bad code.

Net profits from this shirt go to the Bitcoin Red Team via OpenSats. Wearing it isn't just repping the cause — it's funding the whitehats, auditors, and maintainers who keep self-custody safe. It's a rallying cry for the verify-everything crowd, at home at meetups, conferences, and anywhere the conversation turns to firmware, entropy, and who's actually reading the code. Don't trust. Verify. And back the people doing the verifying.

The fabric: a breathable, mid-weight 4.2 oz./yd.² (142 g/m²) build in 100% combed and ring-spun cotton, with heather colorways mixing in a little polyester. Pre-shrunk to keep its shape wash after wash, and reinforced with side-seamed construction and shoulder-to-shoulder taping so it wears well for years. Blank product sourced from Nicaragua, Mexico, Honduras, or the US.

Size guide