Everyone needs peace of mind.
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.
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 14 Gauge sheet (~2mm), you can rest assured the steel 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.
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.
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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 private key) into a super long-lasting piece of steel, you are actively 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)
This grade of steel is highly durable and prevents any kind of rust/corrosion. It will also withstand high temperatures (1450°C/2642°F) and shock.
The only way you can leave a mark into the steel is by using specialized tools like a hammer and hardened steel stamps.
We have put our products to the test:
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.
We ship our products worldwide via Registered Mail (standard air mail). Orders may take up to 4 business days to get dispatched after you buy. We also provide a tracking number.