Lasts for a lifetime, and more.
The Stainless Steel backups by CryptoNumeris are pocket-sized, cold storage solutions with the purpose of keeping your crypto seedphrase and password safe. This type of wallet backup is completely trustless and non-custodial, which means you have full control of your key at all times and become the true owner of it. By stamping/punching your unique seed into a plate of grade 304 Stainless Steel, you can guarantee that your coins will never get lost.
We provide an open solution that is both safe from natural elements and hackers.
Our AISI 304 stainless steel plate can withstand extreme temperatures of around 1450°C (2642°F).
This grade of steel prevents any type of rust or corrosion in the metal, it is highly durable.
By using a 14GA. sheet (~2mm), you can rest assured the plate is not breaking any time soon.
By being completely offline, your backup is 100% unreachable via the internet or any digital medium.
To achieve longevity and extreme toughness, a straight-forward design plus high quality materials is key. Our solutions may look simple but they're highly reliable.
Easy to setup
We make use of the BIP39 Standard. You can easily finish your backup in about 20-30 minutes. There are couple of simple steps to follow and after that you're set.
Once you have stamped your seedphrase or password into the stainless steel, you can consider your plate a permanent and timeproof offline backup. Those marks are not going anywhere.
We put one of our backups in a live ceramic furnace for 12 hours straight, reaching a a peak temperature of 1150 °C (2102 °F).
The plate was fully recovered and no data loss occurred.
Jameson Lopp Tested
This steel plate was submitted to Lopp's proven 3-step methodology to stress test steel backups. No data loss occurred.
He gave this product an A Rating.
🔑 Got your keys, got your coins.
As long as your keep your backup with you, you don't have to worry about your coins getting lost, ever!
Get some peace of mind by securing your assets.
Pay with crypto and get 10% OFF!
Enter code "CRYPTO10" at checkout and select Coinbase Commerce as payment method.
The main goal is safety and longevity. By stamping/punching your seedphrase into a piece of grade 304 stainless steel, you are minimizing the risk of an accident that may occur with a piece of paper, such as a natural disaster that may turn your key illegible. It also lowers the chance of hacking: the nature of the backup (a physical object) implies it is not reachable via the Internet or any other digital medium.
You immortalize your crypto wallet with a deep cold state solution.
Why? This method of backup works extremely well for two simple reasons: It makes use of a standardized method (BIP39) and utilizes a high quality material that can last for hundreds of years (Stainless Steel).
How? By stamping/punching your seedphrase (which is essentially a very long password that represents your cryptocurrency) into a super long-lasting piece of steel, you are essentially creating a timeless copy of your coins and securing them forever.
No. You never have to share your key with anyone at any point of the process. We provide the backup solution and the tools needed for each customer to complete it in their own privacy. Our products are 100% trustless and non-custodial. (Privacy)
There are 3 main reasons why we chose numbers over letters (stamping/punching tools):
- It gives an extra layer of security by not exposing the words directly.
- Makes the process way quicker by having less characters to stamp/punch.
- It's cheaper for the customer and saves shipping costs by weighting less.
Nothing happens. The status of our business does not affect the functionality of the products we sell in any way. The BIP39 standard is open to the public and we just provide a backup solution of it. Once you setup your backup you are the only and true owner of it.