Backup your bitcoin seed phrase

Your seed phrase safe from disaster

Hodlinox plates are metal plates on which you can engrave the seed phrase to your bitcoin wallet.
The plates are made from extra thick stainless steel and can be locked together with a tamper-evident security seal.
Protect your bitcoin from fire, water, EMP and other disasters by engraving your seed phrase onto Hodlinox Plates.
Both our Seed Phrase Backup Plate and Interlocking Plates have been awarded the highest rating (AAAA) in Jameson Lopp’s Metal Bitcoin Seed Storage Stress Test.

Interlocking plates with security seal

By far the safest way to back up your seed phrase is by using Hodlinox Interlocking Plates. All parts are made of stainless steel and are thus fire and water proof.

Engrave the mnemonic phrase

Easy engraving

Engraving your seed phrase onto the Hodlinox plates is easy and will only take about 10 minutes with a low-cost hand-held electric engraver (sold through 3rd party vendors such as Amazon). All plates have etched, numbered grids to help you with your engraving.

Locking the plates together

Interlocking plates

The interlocking plates are held together with an extremely sturdy clamp and a stainless steel screw. All you need to lock or unlock the plates is a common Phillips screwdriver.

Guard the recovery seed with a seal

Tamper-evident security seal

The included all-metal security seal allows you, at all times, to verify that your seed phrase has not been compromised. It is not possible to remove a seal without damaging it.
Read our simple 3-step guide:  How it works.


Seed Phrase Backup Plate with optional case & seal

The Hodlinox Seed Phrase Backup Plate is numbered on both sides and can be ordered with a stylish 3D printed plastic case.

Simple backup for your bitcoin seed phrase

Stainless steel plate

Fire proof, water proof, corrosion resistant and unaffected by various acids: this 316 stainless steel plate is virtually indestructible.
The plate is double-sided with the front side numbered 1 to 12 and the back 13 to 24.

How to engrave your seed phrase in 10 minutes.

Protect the recovery seed from prying eyes

3D printed case

This optional plastic case is 3D printed and available in various colors (default color is white). Can be customized on request. 

Contact us for customization options.

Tamper-evident seal

Tamper-evident padlock seal

The plate with case has a tamper-evident padlock seal, to ascertain that your seed phrase has not been compromised. It’s impossible to remove the seal without damaging it.
Extra seals can be ordered from our store.


Being your own bank means you are responsible for securing your own private keys. There’s no helpdesk you can call when things go wrong, or recourse when your wallet gets hacked.
Fortunately, it’s not that difficult to protect your bitcoin. All it takes is transferring your funds to a hardware wallet, ordering your Hodlinox plates and engraving your recovery phrase.

Want to know more? Take a look at our products or browse the Frequently Asked Questions.