Seed24 Solo
24-word seed phrase tamper-proof metal backup solution
Seed24
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Seed24
Metal Backup for 24-Word Seed Phrases,
Passwords, and Private Keys
Seed24
Metal Backup for 24-Word Seed Phrases,
Passwords, and Private Keys
The Seed24 builds upon the original Cryptosteel Capsule's architecture, retaining all functionalities and introducing enhancements such as tamper-evident seals and a detachable core to increase security and user flexibility. It supports the full ASCII character set, accommodating up to 128 characters for comprehensive storage of everything from passwords and seed phrases to complex configurations like multishare backups.
Simple backup solutions
Secure your single seed backup
Complete stainless steel backup set, includes 1 Cryptosteel core, 24 separators, 4 cotter pins, over 800 character tiles, 1 shell capsule, and 4 tamper-proof seals with composite wire
Seed24 Duo
Double 24-word seed phrase metal backup set
Double stainless steel backup set, includes 2 Cryptosteel core, 48 separators, 8 cotter pins, over 1280 character tiles, 2 shell capsules, and 4 tamper-proof seals with composite wire
Multishare backup solutions
Perfect for securing advanced setup
Seed24 Trio
24-word seed phrase metal backup set for multishare solutions
Triple metal backup set for 24-word seed phrases includes Seed24 Solo plus Seed24 Duo sets
Seed24 Quintet
24-word seed phrase metal backup set for multishare solutions
Quintuple metal backup set for 24-word seed phrases, includes 2 Seed24 Duo plus 1 x Seed24 Solo set
Seed24 color edition
Strength You Trust. Colors You Choose.
Seed24 Shell Capsule Color
Shell Capsule with the core elements
from
60 €
Customize your setup with PVD-coated capsule shells in vibrant metallic finishes. These high-durability colors are applied using high vacuum coating (PVD) technology on top of stainless steel.
Each set includes: Protective shell capsule shell with the core, 24 separators and 4 cotter-pins.
Pick your color:
Classic
60 €
Noir
70 €
Blonde
70 €
Dim Ore
70 €
Spark Yellow
70 €
Seed24 Duo Color
Metal backup set for multishare solutions
170 €
Double metal backup set featuring two PVD-coated capsules in distinct metallic finishes. Available in two curated color options, ideal for advanced multishare configurations.
Includes: 2 Cryptosteel cores, 48 separators, 8 cotter pins, over 1280 character tiles, 2 shell capsules (each in a different metallic color), and 4 tamper-proof seals with composite wire.
Pick your color:
Dim Ore + Blonde
170 €
Spark yellow + Noir
170 €
Seed24 Trio Color
Metal backup set for multishare solutions
250 €
Triple metal backup set combining one classic stainless steel capsule with two PVD-coated capsules in distinct metallic finishes. Available in two curated options for advanced multishare setups.
Includes: 3 Cryptosteel cores, 72 separators, 12 cotter pins, over 1920 character tiles, 3 shell capsules (each in a different metallic color), and 6 tamper-proof seals with composite wire.
Pick your color:
Classic + Spark Yellow + Noir
250 €
Classic + Dim Ore + Blonde
250 €
Seed24 Quintet Color
Advanced setups for multishare solutions
Complete 5-piece backup set for advanced multishare configurations. Each capsule comes in a unique metallic finish — combining classic stainless steel with four high-vacuum PVD-coated colors:
Classic + Dim Ore + Blonde + Spark Yellow + Noir
Includes: 5 Cryptosteel cores, 120 separators, 20 cotter pins, over 3200 character tiles, 5 shell capsules (each in a different metallic color), and 10 tamper-proof seals with composite wire.
Tailor your backup
Mix and match components to customize your setup
Seed24 Security Seals
Four tamper-evident security seals with composite wire
4 x PSW-97® Security Seal by American Casting & Manufacturing Corp. Tool-free locking with a 45 kg (100 lbs) break strength for undeniable tamper evidence and trusted durability.
Seed24 Tiles Set
Complete set of ASCII printable characters
Includes over 800 deeply embossed stainless steel character tiles for the Seed Metal Backup System: uppercase and lowercase latin letters (Aa-Zz), numbers (0-9), and special characters (! ” # $ % & ‘ ( ) * + , – . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~).
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Next Generation Capsule
Cryptosteel
Capsule
Next generation
The Seed24 improves security and user experience while retaining the foundational qualities and features of the original Cryptosteel Capsule.
What remains the same:
- Material: Made from space-grade stainless steel.
- Size: Same capsule thickness and overall dimensions.
- Manufacturing Standards: Same high standard of production and finishing.
- Capacity and Compatibility: Same expansive capacity for storing up to 128 characters, supporting a full ASCII character set. Suitable for extensive password, private keys and seed phrase storage, including complex multishare setups.
What’s new:
- Core Separation: Core is now detachable from the capsule shell for separate or alternative container storage.
- Cotter-Pin: New double-sided, foolproof cotter-pin for securing the password on the core.
- Separator Design: New shape of separators to facilitate restore.
- Character Tiles: New flat character tiles with deeply embossed signs for better stacking.
- Security Seal: Option to install a tamper-evident seal, with a unique serial number.
- Customizable Modularity: interchangeable components to fit individual needs.
Modularity of the system
Customize your backup with interchangeable components designed for flexible and secure data protection.
Deformation-resistant core. Reinforced cotter-pin.
Precision-engineered for full protection — even without the capsule shell.
Tamper-evident protection
PSW-97® Security Seal: Easy, tool-free application with a strong 45 kg break strength, ensuring visible tamper proofing.
Product specifications
Product specifications
Seed24 Solo
Packaging dimensions: 278 x 181 x 25 mm / 11 x 7,1 x 1 in Packaging weight: 540 g
Included in the box: 1 x Shell Capsule Seed24, Character tiles – over 800, 1 x Cryptosteel core, 12 x Separator, 3 x Cotter pin, 4 x Security seal with composite wire
Seed24 Duo
Packaging dimensions: 278 x 181 x 25 mm / 11 x 7.1 x 1 in Packaging weight: 740 g
Included in the box: 2 x Shell Capsule Seed24, Character tiles – over 1280, 2 x Cryptosteel core, 24 x Separator, 6 x Cotter pin, 4 x Security seal with composite wire
Seed24 Trio
Includes 1 x Seed24 Solo + 1 x Seed24 Duo sets
Seed24 Quintet
Includes 2 x Seed24 Duo + 1 x Seed24 Solo set
Shell Capsule Seed24
Packaging dimensions: 180 x 125 x 25 mm / 7 x 4.9 x 1 in Packaging weight: 163 g
Included in the box: 1 x Shell Capsule Seed24 (Classic), 1 x Cryptosteel core, 24 x Separator, 3 x Cotter pin
Seed24 Security Seals
Packaging dimensions: 180 x 25 x 25 mm / 7 x 1 x 1 in Packaging weight: 20g
Included in the box: 4 x PSW-97® Security Seal by American Casting & Manufacturing Corp., 4 x composite wire
Seed24 Tiles Set
Packaging dimensions: 180 x 125 x 25 mm / 7.1 x 4.9 x 1 in Packaging weight: 420 g
Included in the box: Over 820 tiles with 94 characters, A full set of marked tiles (letters, numbers, special characters), Separators and fasteners
For setup instructions, visit the Seed24 User Manual
FAQ
What improvements does the new Seed24 capsule offer over the regular Capsule Solo?
What improvements does the new Seed24 capsule offer over the regular Capsule Solo?
The Cryptosteel Seed24 offers these enhancements over the Capsule Solo:
- Structural Improvements: It features a deformation-resistant steel core, new foolproof cotter-pins for secure locking, and a capsule shell that supports tamper-evident seals.
- Enhanced Usability: New shape of separators improve stability and flat, deeply embossed tiles – readability.
- Increased Security: Includes PSW-97® Security Seals with unique serial numbers.
- Customizable Storage Options: Provides options for storing the seed core in different colored shells or alternative containers.
These upgrades make the Seed24 a more secure and versatile backup solution.
Are the components (letter tiles, fasteners) the same as in Capsule Solo?
Are the components (letter tiles, fasteners) the same as in Capsule Solo?
Seed24 components have been redesigned improve the security, usability, and flexibility of the system:
- Capsule and Core Design: The capsule has been redesigned to allow the metal core to be stored separately from the container cap, enhancing flexibility and customization options. This separation is a critical structural change.
- Fasteners: Transitioned to foolproof cotter-pins for more secure locking of the backup sequence.
- Separators: Newly shaped to improve stability and ease of reading during data restoration.
- Character Tiles: Are now perfectly flat with deeply embossed characters for better durability and clearer visibility.
I prefer the regular Capsule. Can I still order it?
I prefer the regular Capsule. Can I still order it?
The Seed24 is essentially the same product as the regular Capsule, with a few usability enhancements. The key differences are the holes for mounting the tamper-evident seal and the core that is not permanently attached to the capsule shell cap, allowing for more flexibility.
The Seed24 has the same capacity, dimensions, and is made from the same materials as the original Capsule. Additionally, all components are backward compatible, so if you have letter tiles from a Capsule Solo set, you can use them with the Seed24 and vice versa. Essentially, the Seed24 is an upgraded version of the regular Capsule.
Cotter-pin vs. Fastener – what’s the difference?
Cotter-pin vs. Fastener – what’s the difference?
The Cotter-pin is a redesigned and improved version of the Fastener used in the Cryptosteel Capsule. Its double-sided design prevents both incorrect installation and accidental detachment, making the whole setup safer and more reliable. In the past, some users would install two fasteners side by side for extra security. While the new Cotter Pin makes that unnecessary due to its improved design, you can still use two if you want that extra layer of security.
Can I use Seed System for multi-signature wallets (multisig) or multiple seed phrases?
Can I use Seed System for multi-signature wallets (multisig) or multiple seed phrases?
Yes, the Seed System can be used for multi-signature wallets (multisig) and multishare backups (aka Shamir Secret Sharing). Its modular design makes it suitable for securing diverse and complex digital asset management needs.
Which wallets is Seed24 compatible with?
Which wallets is Seed24 compatible with?
The Seed24 works with various non-custodial wallets, including hardware, software, and Lightning wallets that support BIP39, BIP32, BIP44, and SLIP39 standards. It can securely store a 24-word seed phrase, common for most hardware wallets and many non-custodial software and Lightning wallets.
Supported wallet brands include hardware wallets (Blockstream, Bitbox, Ledger, Trezor, KeepKey, Coldcard, Passport by Foundation), software wallets (Green, Electrum, Exodus, Samourai, Trust Wallet), and Lightning wallets (BlueWallet, Wallet of Satoshi, Phoenix, Zap, Breez).
These wallets are non-custodial, meaning you retain full control of your private keys and seed phrases, ensuring compatibility with Seed24 for secure storage and recovery.
Which components work with both Seed12 and Seed24 Metal Backup?
Which components work with both Seed12 and Seed24 Metal Backup?
All functional components of the Seed Metal Backup System are compatible across both Seed12 and Seed24. This includes character tiles (letters, numbers, and symbols), separators, cotter-pins (fasteners), and tamper-evident PSW-97 security seals. Shell capsules and steel cores are interchangeable within their respective sizes — meaning a Seed12 core fits any Seed12 shell, and Seed24 cores can be used with any Seed24-compatible capsule.
In addition, character tiles, separators, and fasteners from the original Cryptosteel Capsule are fully compatible with both Seed12 and Seed24 lines. This allows users to repurpose existing components, expand their setup, or build new backups using the leftover parts.
Still have questions? Get help from
a Cryptosteel expert.
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