Color
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Coldcard Entropy Department 2026

When your hardware wallet’s random number generator decides 40–72 bits of entropy is “good enough,” you don’t just update firmware.
You make merch.

This is the official unofficial uniform of the Coldcard Entropy Department — the team that accidentally turned seed generation into a lottery for five years. Soft, heavyweight 100% cotton. Classic fit. Zero corporate risk management energy. Maximum degen energy.

Wear it if you:

  • Generated a seed on a Mk3 between 2021–2026
  • Still sleep with a BIP-39 passphrase under your pillow
  • Appreciate the pure comedy of a #ifndef bug surviving for half a decade

Details
• Unisex classic fit
• 100% cotton, 5.9 oz / 200 g/m²
• Soft hand-feel, slight stretch
• Durable print that survives the occasional fiat laundry cycle
• Available in Black & White

Care
Machine wash cold (30°C), gentle cycle. Do not bleach. Tumble dry low. Iron on reverse only. Do not dry clean.

Size chart available below. Fit is true to size — size up if you like it roomier.

Degen Swag
Bitcoin merch. Political memes. Zero apologies.

S M L XL 2XL 3XL
inch cm inch cm inch cm inch cm inch cm inch cm
Length 25.98 66 26.77 68 27.56 70 28.35 72 29.13 74 29.92 76
Shoulder 16.54 42 17.32 44 18.11 46 18.90 48 20.08 51 20.87 53
Chest 18.90 48 19.69 50 20.47 52 21.26 54 22.05 56 22.83 58
Sleeve length 8.27 21 8.27 21 8.66 22 8.66 22 9.06 23 9.06 23

Made with care

Heirloom quality

Premium materials

Classic styling

Styled With

Coldcard Entropy Dept Unisex Cotton T-Shirt Black - Degen Swag
Materials

Sustainable, natural textiles can be enjoyed for generations to come.

Care

Wash only when necessary using cold water and a gentle detergent.

Details

Hand-picked accents give this piece an understated unique look.

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