The Best Bitcoin Hardware Wallets & Seed Phrase Backup Tools
A simple directory of the best Bitcoin signing devices, metal seed backup tools, and supporting wallet software — because your sats are best stored cold.
Cryptosteel Capsule Solo
The Cryptosteel Capsule contains a set of steel character tiles that can be used for password or seed phrase storage within the stainless steel Capsule. One Capsule can store a seed phrase or password composed of 24 words abbreviated to the first 4 letters.
Stainless Steel Password & Seed Phrase Storage Solution
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. It is compatible with most secret sharing and key generation algorithms.
Product specifications
Capsule dimensions: length 102mm, diameter 16mm
Solid metal construction – 100% stainless steel Shell made of AISI 303
Core, separators, fasteners and character tiles made of AISI 304
Packaging includes all printable ASCII characters (96 different characters).
Backup type compatibility
100% coverage for:
- BIP39 (unabbreviated 12-word recovery seeds or 4-letter abbreviations of 24-word recovery seeds)
- Shamir Backup SLIP39 (4-letter abbreviations of 20-word recovery seeds)
- BIP32 root keys
- WIF private keys
- Monero mnemonic seeds (4-letter abbreviations of 25-word recovery seeds)
More than 99% coverage for:
- hexadecimal strings up to 123 characters
- random ASCII strings up to 55 characters
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PunchPlate Mini 12 Words
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PunchPlate 24 Words
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