The ultimate gift set for crypto beginners and experts alike! Includes five Cryptosteel Capsules packed and the Trezor Model T hardware cryptocurrency wallet in an exclusive clamshell box, all made in Europe. The Cryptosteel Capsule is the leading seed backup device protecting against memory device failure, loss or damage by natural elements. Paired with the groundbreaking Shamir’s Secret Sharing (SSS) system and the Model T hardware wallet by our official partner Trezor, the HODL Pack is the definitive seed backup combo!
The Shamir HODL (Hold On for Dear Life) bundle is based on the SSS backup system created by Israeli cryptographer Prof. Adi Shamir, co-inventor of the Rivest–Shamir–Adleman (RSA) algorithm, and one of the inventors of differential cryptanalysis, with numerous contributions to cryptography and computer science.
A set of five Cryptosteel capsules combined in a Shamir HODL pack is the core of the system and the pinnacle of security. The method is based on splitting the seed into multiple parts (aka “shares”). Unlocking the seed requires a defined minimum number of shares (the “threshold”), typically the simple majority of designated shares. The Shamir HODL Pack allows distributed backup on the virtually indestructible Cryptosteel capsules in a robust and practical 3-of-5 configuration securing your seed even if one or two capsules succumb to malicious or chance occurrences. The system ideally complements the Trezor Model T hardware wallet built around the highly praised open-source SLIP39 backup standard. With support for over a thousand coins and tokens, as well as U2F and FIDO2 authenticators, the Cryptosteel Shamir HODL Pack is the ultimate security solution for your digital identity and crypto assets.
The capsule features adjustable separators, offers more capacity – 123 instead of 96 characters most other solutions provide – and comes with a full ASCII-character-set supporting random passwords with numbers and symbols. All of the characters are deeply stamped into the tiles to provide maximum longevity.
This means that the capsule can securely store a random password without separators, an unabbreviated 12-word mnemonic seed, or the first four letters of a mnemonic seed made up of 25 word phrases.
The first example shows a random ASCII password stored on the core that is 55 characters long. Considering the unused space, two or more passwords can be stored, split using separators, up to 123 characters long, in total, including WIF, Hexadecimal, and Root Keys.
With the second, you can see an unabbreviated 12-word mnemonic seed. With the remaining space at the top, you can store additional data including passwords, passphrases, or random ASCII strings.
The third example demonstrates a 25-word abbreviated mnemonic seed. Of course, the aesthetically designed capsule is also able to store 20-word Shamir backups and 24-word recovery seeds in their abbreviated forms.
Our aim is to standardise the offline information protection system and provide a solution right out of the box. You don’t need to think or worry about buying additional materials or special tools. You don’t have to learn the hard way how painful engraving metal can be – no specific knowledge or safety equipment is needed. Simply open the pack and get started – everything you need is right there.
We use a classic, easy to read font that will be legible 10 or 1000 years from now. Hand engravings will naturally differ from person to person. Over time, you (or your heirs) may not be able to retrieve the information from a hand-written backup due to style, ambiguity, or decay. Using standardised tiles, you can change, undo, or redo the data you wish to be guarded. Should you make any errors, you can easily correct them.
The usual approach to protecting digital assets is redundant backups, but when the asset itself is of significant value and high liquidity, there is a substantial risk of a backup custodian absconding with the asset.
The cryptographic secret-sharing scheme created by Adi Shamir is an ingenious way to help protect data.