NGRAVE GRAPHENE is an encrypted stainless steel backup system for securing your crypto wallet's recovery phrase. Designed by NGRAVE and made in Belgium, it pairs with the NGRAVE ZERO hardware wallet's Perfect Key system for a complete self-custody solution.
Encrypted Two-Plate Design
GRAPHENE consists of two stainless steel plates (each A5 size: 148mm × 210mm × 3mm). You punch characters through the upper plate into the lower plate using the included punch pen. The plates can then be separated and stored in different locations — neither plate alone reveals the complete key. Only the combination of both plates does.
Extreme Durability
- Fire resistant up to 1375°C / 2507°F — Withstands temperatures far exceeding house fires.
- Waterproof — Floods and water spills pose no threat.
- Corrosion resistant — Can be buried underground without rusting.
- Shock resistant — Durable enough to withstand physical impacts.
Recoverable Design
If you lose your upper plate, you can request a replacement from NGRAVE using your Ultimate Recovery Code. Since NGRAVE has no information about your lower plate, your key remains secret throughout the recovery process.
How It Works
- Generate your Perfect Key on the NGRAVE ZERO hardware wallet.
- Punch the characters through the upper plate into the lower plate using the punch pen.
- Separate the plates and store them in different secure locations.
- To recover, bring the two plates back together to read your key.
Ideal For
Users who want an encrypted, physically distributed backup solution that can survive fires, floods, and catastrophic events — with the added benefit of recoverability if one plate is lost.
Pros
- Encrypted two-plate design eliminates the single point of failure found in most metal backups — neither plate alone reveals the seed phrase.
- Supports custom multi-backup setups — purchase extra lower plates to split your key across multiple locations or create redundant copies.
- Seamlessly integrates with NGRAVE ZERO hardware wallet and Perfect Key generation for a complete end-to-end self-custody solution.
- Upper plate recovery service lets you request a replacement using your unique Ultimate Recovery Code if you lose the template.
- Extreme durability — stainless steel construction withstands fire up to 1375°C, water, corrosion, and shocks with independently verified no data loss.
Cons
- Large A5-sized plates (148mm x 210mm) are bulkier than most competing products, making discreet storage and concealment more challenging.
- More expensive than competing metal seed backups — the complete GRAPHENE set costs significantly more than single-plate alternatives like Cryptosteel or Billfodl.
- Uses hexadecimal characters (0-9, A-F) rather than standard BIP39 word list format, requiring a conversion step for use outside the NGRAVE ecosystem.
- Upper plate replacement depends on NGRAVE's continued operation — if the company ceases to exist, a lost upper plate cannot be replicated.
- Thin metal plates can warp under extreme heat, potentially making it difficult to align the template with the data plate for reading.