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
#ifndefbug 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
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.