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This t-shirt features a SHA-256 hash: a cryptographic fingerprint generated from a short piece of text.
SHA-256 is the hashing algorithm that secures Bitcoin. It transforms any message into a fixed-length output that cannot be reversed, altered, or forged. The original text remains hidden, protected by mathematics rather than secrecy by obscurity.
In Bitcoin, SHA-256 is used to secure transactions, protect the blockchain, and replace trust in institutions with verifiable computation. It is the foundation of Bitcoin’s security model and a cornerstone of modern digital privacy.
The design encodes a secret message. What you see is not the sentence itself, but its irreversible expression. Meaning exists, but only as proof, not disclosure.
This shirt is about privacy without silence, structure without exposure, and the idea that in the digital age, truth can be proven without being revealed.
This design is also available in a color version.
| IMPERIAL (in) | METRIC (cm) | |||||
|---|---|---|---|---|---|---|
| Width | Length | Sleeve* | Width | Length | Sleeve* | |
| A | B | C | A | B | C | |
| S | 18.25 | 26.63 | 16.25 | 46.4 | 67.6 | 41.3 |
| M | 20.25 | 28.00 | 17.75 | 51.4 | 71.1 | 45.1 |
| L | 22.00 | 29.38 | 19.00 | 55.9 | 74.6 | 48.3 |
| XL | 24.00 | 30.75 | 20.50 | 61.0 | 78.1 | 52.1 |
| 2XL | 26.00 | 31.63 | 21.75 | 66.0 | 80.3 | 55.2 |
| 3XL | 27.75 | 32.50 | 23.25 | 70.5 | 82.6 | 59.1 |
| 4XL | 29.75 | 33.50 | 24.63 | 75.6 | 85.1 | 62.5 |
* = measured from center back of neck
This tee is crafted for durability, comfort and real-life wear—here’s how we build it and how you look after it:
Material & build
Heavyweight construction (~6.1 oz/yd² / ~205 g/m²) for a substantial yet breathable feel.
Garment-dyed for a lived-in texture and authentic vintage fade.
Minimal shrinkage — pre-shrunk fabric means you get the fit you expect.
Care instructions
Machine wash cold (inside out) with like colours (90°F / 30°C).
Only non-chlorine bleach when needed.
Tumble dry at low heat or hang dry for longevity.
Do not iron directly over any print or graphic.
Do not dry clean.
Extra notes
Because it’s pigment-dyed, colour shades may vary slightly from what you see on screen — that’s part of the vibe. The relaxed fit and tape-reinforced shoulders add durability and a solid feel in the hand.
Processing
Each garment is printed/embroidered on demand.
Standard processing time: 1–5 business days
Shipping
USA: 2–5 business days
EU/UK: 3–7 business days
Canada: 5–12 business days
Australia/NZ: 5–10 business days
Rest of World: 7–14 business days
Estimated delivery time
USA: 3–10 business days total (processing + shipping)
International: typically 7–16 business days, depending on region and carrier
Notes
Tracking is included for all apparel shipments.
Peak season or courier delays may extend processing or delivery times.
Longer delivery times apply to Alaska, Hawaii, Puerto Rico, and U.S. territories.
Our Guarantee
We stand behind the quality of every piece we produce. If something goes wrong on our side, we fix it — fast.
We offer free replacements for:
Print defects or quality issues
Incorrect items
Damaged or faulty garments
Packages lost in transit
Simply contact us with your order number and a clear photo of the issue.
Limitations
Because every item is made to order:
We cannot accept returns or exchanges for sizing issues
No returns for buyer’s remorse or changes of mind
We cannot refund delays caused by shipping carriers
Please refer to our detailed size charts before ordering
This helps us reduce waste, keep costs fair, and ensure each item is produced just for you.
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