Cryptosteel Cassette

Cryptosteel Cassette is the product that started it all — pioneering the market for offline metal wallets since 2013. It is a pocket-sized stainless steel unit designed to securely store alphanumeric data without the need for specialized tools or third-party involvement.

Pioneering Design

Since 2013, the Cryptosteel Cassette has established the standard for offline metal wallet backups. Its tried-and-tested design has protected countless seed phrases and private keys over more than a decade.

Construction & Durability

• Stainless Steel Construction — Built to withstand physical damage including fire, flooding, corrosive conditions, electric shock, and impact from accidents.
• Pocket-Sized — Compact enough to carry anywhere or store securely.
• Offline Permanence — Once a sequence is locked into the Cassette, the data gains permanent offline status.

Capacity

• Up to 96 Characters — Stores a substantial amount of confidential information.
• Pre-Engraved Tiles — Comes with its own kit of stainless steel tiles engraved on both sides.
• Part-Random Character Set — Characters are assembled manually from a randomized set for added security.

How It Works

Codes and passwords are assembled manually from the supplied part-random set of characters. Once your desired sequence is locked in, the Cassette provides permanent offline storage that's resistant to virtually all forms of physical damage.

Compatibility

Universally compatible with any wallet backup format that can be represented as alphanumeric characters — BIP39 seeds, private keys, passwords, and more.