Every pair of UCXS® sneakers and every limited edition item carries a self-contained code on the inside label. This code makes each item permanently traceable by date, batch, total quantity, size quantity, and edition. No QR codes, no databases, and no apps are required.

The system is completely self-sufficient. Once you understand how the USN works, you could stumble across a pair of UCXS® sneakers in 100 years and still know exactly when and how it was made.

Why it matters

• Transparency: You can see exactly when and how many were produced.
• Rarity proof: Collectors know the size-run quantities.
• Future-proof: Works without external tech; the code itself tells the story.
• Heritage: Prototypes, experiments, limiteds, and regulars are all documented.

The USN turns each item into a recorded piece of product history.

Format:
YYMMDD + Batch Letter + Total Batch Quantity + Size Quantity + Edition Letter

1. YYMMDD:
Production Confirmation Date
Example: 250416 → April 16, 2025

2. Batch Letter (A–Z): Order of batches on that date
A = first, B = second, …

3. Total Batch Quantity (with suffix): Pairs made in that batch
Suffixes:
S = Single (1)
X = Tens (e.g., 1X = 10)
H = Hundreds (e.g., 2H = 200)
T = Thousands (e.g., 1T = 1,000)

4. Size Quantity: Pairs made in this size (plain number, e.g., 100)

5. Edition Letter: Release type
R = Regular (continues
L = Limited (one-time)
C = Collaboration
E = Experimental (very low qty)
P = Prototype

250416A1P
2025-04-16 / Batch A / 1 pair total / Edition P (Prototype)
In short: Unique 1-of-1 (Prototype)

250416A1X2E
2025-04-16 / Batch A / 1X = 10 pairs total / 2 pairs in this size / Edition E (Experimental)
In short: Small run, 10 pairs (Experimental)

250416A2H25L
2025-04-16 / Batch A / 2H = 200 pairs total / 25 pairs in this size / Edition L (Limited)
In short: Medium run, 200 pairs (Limited Edition)

250416B2T150R
2025-04-16 / Batch B / 2T = 2,000 pairs total / 150 pairs in this size / Edition R (Regular)
In short: Large run, 2,000 pairs (Regular Production)