Where the codes are
The outer SN is printed on the box. The 8-character inner verification code is on the label inside the pack, on the spool. You need both — that pairing is created at packing time and can't be faked by copying a box.
Red flags of fake filament
- Price far below market with no credible explanation
- No verifiable serial — or a serial that never verifies
- Packaging differences: no vacuum seal, no desiccant, blurry labels
- Seller can't name their source or dodges the question
- Reviews mentioning clogs, brittleness or odd diameter
What fakes do to your printer
Counterfeit filament is usually off-spec mystery plastic: inconsistent diameter grinds extruders and clogs hotends, unknown additives print at the wrong temperatures, and the fumes are anybody's guess. The roll costs less; the failed prints and worn parts cost more.
Verify in 10 seconds
- Open the Verify page and log in (or register in one step)
- Enter the outer SN and the inner code
- A genuine, unclaimed roll instantly credits 20 points to your account
If verification fails
An unknown SN means the box was never packed by us — treat it as suspect and contact support with photos. A mismatched inner code usually means a typo; you have 5 attempts before a short lockout. An already-claimed roll was verified before. This is normal for second-hand spools. It still proves the roll is genuinely ours; only the points are spent. Buying used? Ask for a verification screenshot first.
Spending points
Points accumulate in your account for future rewards — redemption opens with our upcoming campaigns. For now, each verified roll earns 20 points.