Cryptosteel • The Mother of All Backups

Secure Your
Wallet Seed Phrase

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The Mother Of All Backups

Protecting digital assets requires relying on passwords.

Your most valuable data requires a long-term and secure backup. Your data is only as safe as your key.

Secure your data with solid metal. Once backed up, achieve peace of mind for a lifetime.

Cryptosteel is fireproof, shockproof and waterproof. An offline tool that you own. No data leaks, no security breaches. Provide your passwords with a lifetime of safety.

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What is the Cryptosteel Capsule?

And why do I need one?

The Cryptosteel Capsule is the premier backup tool for autonomous offline storage of valuable data without any third-party involvement. The solid metal device, designed to survive extreme conditions, works under nearly all circumstances.

Our solution combines the age-old idea of engraving – in a DIY assembly format – with material that is stainless, shockproof, acid-resistant and fireproof up to 1400C/2500F. It is compatible with most secret sharing and key generation algorithms, and keeps the enclosed data secure. Even in cases of aggressive acts such as theft, bribery, vandalism or violence your master secret can remain safe forever.

There is no third party involved in keeping your data safe. And our metal capsule beats paper, wood, and corrosive metals in terms of durability. It is affordable, non-toxic, and hard to detect using next-gen methods of surveillance.

With Cryptosteel, your most sensitive information is both hacker-proof and safe from natural disasters.

High flexibility
supports all printable ASCII characters
Improved security
passwords are protected, not visible at first glance.
High mobility
small, light, easy to hide and protect

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Product Details

Adjustable separators
keep your mnemonic seed in full in 123 characters.
D.I.Y TAMPER EVIDENCE
Fireproof barier seal possible.
Extremely durable
Fireproof. Shockproof. Waterproof. Stainless.

STAINLESS FIREPROOF SHOCKPROOF WATERPROOF

Made out of one single material.
100% top-grade German stainless steel.

The Capsule’s parts are made of 303 and 304 grades of steel. Why these grades of steel over all others? Easy. 304-grade stainless steel offers the ideal combination of strength, heat tolerance and resistance to wear and corrosion. In marine environments 316-grade steel is often selected for its extra resistance to corrosion. However, 304-grade stainless steel is used to manufacture bolts, screws and cogs for maximum resistance to both corrosion and wear. As for the 303-grade of stainless steel, this non-magnetic alloy is the most readily machineable of all the austenitic grades of stainless steel. And of course using steel from Germany needs no explanation.

Fireproof up to 1400C / 2500F.
The Capsule beats Class 350-4 hour vault heat resistance rating.

Vault ratings measure the way materials protect what is inside a vault. So a Class 350-4 hour strongbox can keep paper documents intact for a minimum of four hours with temperatures of up to 1093.3C/2000F outside the vault. For the Capsule, the fire can burn even hotter and longer with absolutely none of the warping that could put your data at risk. Unlike deliberate sabotage with a blowtorch, which burns 2-3 times hotter than most fires, a typical house fire will not distort a capsule.

Whether the danger is electric or mechanical, the Capsule is built to resist destruction.

Not only will our steel survive attack and impact, but so will our build. Few materials are as impervious to lightning strikes, microwave bombs, nuclear events and vertical drops as the Capsule’s top quality German steel, which we use to make all of our product components. Thanks to our tested design and meticulous in-house assembly, the strength of our top-of-the-line material is transferred into each product unit.

More than waterproof and resistant to salt water and acids.
The deep thread hermetically seals the Capsule which keeps it strong even under water.

Impervious to plain water and highly resistant to acids and other substances, the Capsule’s 304 and 303 grades of stainless steel offer the optimal combination of strength and durability. While 316-grade steel and other alloys claim higher corrosion resistance in extreme-pH environments, these materials are susceptible to warping, offering less reliable protection against natural disaster. Even in shipbuilding, the parts that require maximum resistance to both corrosion and wear are made of 304-grade stainless steel.

Built to withstand the elements

Stainless

Made out of one single material.
100% top-grade German stainless steel.

Fireproof

Fireproof up to 1400C / 2500F.
The Capsule beats Class 350-4 hour vault heat resistance rating.

Vault ratings measure the way materials protect what is inside a vault. So a Class 350-4 hour strongbox can keep paper documents intact for a minimum of four hours with temperatures of up to 1093.3C/2000F outside the vault. For the capsule, the fire can burn even hotter and longer with absolutely none of the warping that could put your data at risk. Unlike deliberate sabotage with a blowtorch, which burns 2-3 times hotter than most fires, a typical house fire will not distort a capsule.

Waterproof

Cryptosteel is Waterproof

More than waterproof and resistant to salt water and acids.
The deep thread hermetically seals the Capsule which keeps it strong even under water.

Shockproof

Cryptosteel is Shockproof

Whether the danger is electrical or mechanical, the Capsule is built to resist destruction.

Tested by Users and Experts

Cryptosteel is THE most secure way to back up a cryptographic private key or seed. Cryptosteels give you CCSS Level 3 compliance right out of the box, being impervious to fire, flood, static electricity and even EMPs. I truly believe there is no better alternative.

Michael Perklincryptocurrency security expert and CISO at ShapeShift.io

Finally @cryptosteel in my hands! Indestructible seed backups of @BitcoinTrezor are here!

SlushCEO SatoshiLabs, Trezor Architect

We have been Cryptosteel users for the better part of 2017 and have nothing but the best things to say about it. We literally tell everyone in our network, be it our investors, partners, or clients, that if they are looking to securely store their seed passphrases or other critical data, they need to look no further than a Cryptosteel as it really is the best solution.

Michael SonnenscheinDirector of Sales and Business Development at Grayscale

more reviews

Hailed in the Press

How it works

The Cryptosteel Capsule is a pocket-sized stainless steel device designed to securely store the important data of your choice with no need for specialised tools or third-party involvement. Each Capsule comes with its own kit of stainless steel tiles engraved on each side. All of the characters are deeply stamped into the tiles to provide maximum longevity.

Codes and passwords are assembled manually from the supplied part-random set of characters. You can store up to 123 characters worth of confidential information in minutes, guaranteeing the safety and privacy of your data. Fasteners provided in the kit that accompany every Capsule hold the tiles together, assuring the sequence perpetually remains the same unless changed or tampered with. To read the data from the device, slide the tiles along free space on the core.

Once a desired sequence is locked into a Capsule, it essentially gains the status of offline permanence, featuring resistance to physical damage – including fire, flooding, corrosive conditions, electric shock and impact from accidents. You may additionally shield important information using, for example, the Shamir Backup scheme, which is supported by the Capsule. The master secret that you are protecting might never be compromised even in cases of aggressive acts including but not limited to theft, bribery, vandalism and violence.

Instructions for setting up your Cryptosteel.

Need help?

Go to our FAQ section or contact us if you have a question we haven’t been asked yet.

Protecting digital assets requires relying on passwords.

Secure your data with solid metal. Once backed up, achieve peace of mind for a lifetime.

What is the Cryptosteel Capsule?

High flexibility

Improved security

High mobility

Adjustable separators

D.I.Y TAMPER EVIDENCE

Extremely durable

Made out of one single material.
100% top-grade German stainless steel.

Fireproof up to 1400C / 2500F.
The Capsule beats Class 350-4 hour vault heat resistance rating.

Whether the danger is electric or mechanical, the Capsule is built to resist destruction.

More than waterproof and resistant to salt water and acids.
The deep thread hermetically seals the Capsule which keeps it strong even under water.

Built to withstand the elements

Made out of one single material.
100% top-grade German stainless steel.

Fireproof up to 1400C / 2500F.
The Capsule beats Class 350-4 hour vault heat resistance rating.

More than waterproof and resistant to salt water and acids.
The deep thread hermetically seals the Capsule which keeps it strong even under water.

Whether the danger is electrical or mechanical, the Capsule is built to resist destruction.

Tested by Users and Experts

Hailed in the Press

How it works

Need help?

We accept

Follow us on

Protecting digital assets requires relying on passwords.

Secure your data with solid metal. Once backed up, achieve peace of mind for a lifetime.

What is the Cryptosteel Capsule?

Made out of one single material. 100% top-grade German stainless steel.

Fireproof up to 1400C / 2500F. The Capsule beats Class 350-4 hour vault heat resistance rating.

Whether the danger is electric or mechanical, the Capsule is built to resist destruction.

More than waterproof and resistant to salt water and acids. The deep thread hermetically seals the Capsule which keeps it strong even under water.

Built to withstand the elements

Made out of one single material. 100% top-grade German stainless steel.

Fireproof up to 1400C / 2500F. The Capsule beats Class 350-4 hour vault heat resistance rating.

More than waterproof and resistant to salt water and acids. The deep thread hermetically seals the Capsule which keeps it strong even under water.

Whether the danger is electrical or mechanical, the Capsule is built to resist destruction.

Tested by Users and Experts

Hailed in the Press

How it works

Need help?

We accept

Follow us on

Made out of one single material.
100% top-grade German stainless steel.

Fireproof up to 1400C / 2500F.
The Capsule beats Class 350-4 hour vault heat resistance rating.

More than waterproof and resistant to salt water and acids.
The deep thread hermetically seals the Capsule which keeps it strong even under water.

Made out of one single material.
100% top-grade German stainless steel.

Fireproof up to 1400C / 2500F.
The Capsule beats Class 350-4 hour vault heat resistance rating.

More than waterproof and resistant to salt water and acids.
The deep thread hermetically seals the Capsule which keeps it strong even under water.