Best Crypto Wallet Recovery Seed Phrase Cold Storage Backup 2023, CRYO

If you lose access to your private key you lose access to your crypto permanently. Hardware wallets do not last forever and are subject to data loss as well as damage. Mobile wallets are subject to lost phones, crashes and deletion. Storing your seed phrase on a computer can lead to hackers stealing you cryptocurrency. An offline backup can prevent a catastrophic loss of your crypto.

Typically the recovery phrase will be created and displayed by your hardware or digital wallet when it is initially set up. For best practice, it is advised to NEVER use a pre-generated seed phrase that is already.

The CRYO DOT can store up to 24 seed words. The CRYO SLIM and CARD can each store up to 48 words.

CRYO - Crypto Wallet Recovery Seed Phrase Cold Storage Backup. CRYO is a tough, metal recovery seed phrase backup for your crypto wallet. Made from fireproof, waterproof stainless steel cryptocurrency seed phrase storage. Protect your crypto with CRYO.

CRYO | Crypto Wallet Recovery Seed Phrase Cold Storage Backup

CRYO is a patent-pending, stainless steel cold storage backup to prevent the catastrophic loss of your crypto.


Paper wallets can easily fade, burn or suffer water damage over the years.

CRYO is made with industrial stainless steel tested to withstand temperatures up to 2500°F, more than twice the average house fire. CRYO is also water and corrosion resistant.Once your seed phrase is safely stored offline on a CRYO, hackers can not steal your crypto.

And unlike your memory, CRYO will not fade over time.


CRYO is designed to withstand a range of physical damage, including fire, floods and impact from accidents.

The outer plates protect the inner seed plates from physical damage. Each plate is made with 2mm thick durable stainless steel with precision etched designs on the plate's surface.

The CRYO DOT also includes an automatic punch tool to easily mark your seed plates. No additional hammers, engravers or letter stamping tools are required.

Secure your financial future in a few minutes with the best backup in the world.


The CRYO is designed to be discreet, easily concealable and portable. It fits comfortably in the palm of your hand.

The cover plate can also be flipped to make the backup look unremarkable.

The CRYO has also been designed to easily split your inner seed plates and store them in separate locations for additional security.

Safeguard your crypto and have peace of mind knowing your seed is securely backed up on a CRYO.


  • Ledger
  • Trezor
  • KeepKey
  • Exodus

BIP39 is the open-source industry standard used by most cryptocurrency wallets to generate private keys. It is an alphabetical word list of 2048 words. The first word 'Abandon' is number '0001' The last word 'Zoo' is number '2048'. All the words in between also have a correlating number. 

Each of the BIP39 list words can be converted to a four digit number. Instead of using the BIP39 words we use the BIP39 numbers so we can create the most compact seed storage device available.

Use the BIP39 list included in the instructions booklet OR find the BIP39 word list online located here: 

As long you have your BIP39 words recorded on the CRYO you will be able you use the universal, open-source BIP39 list to convert back to your recovery phrase to restore your wallet.

DOT Instructions

Instructions for how to setup the CRYO DOT can also be downloaded here: CRYO DOT Instructions (PDF)

How to Set Up Your CRYO DOT

1) Remove items from the box

You should have: 1 x Punch tool, 2 x Recovery Phrase sheets, 4 x CRYO plates & screws. If anything is missing or needs replacement contact us at

2) Grab a pen or fine tip marker

You will need a pen to write down your recovery seed words and corresponding BIP39 numbers. You may also need a permanent marker (if your pen is not sufficient) to mark the surface of the CRYO plates before using the punch tool.

3) Confirm your recovery phrase works

Before moving on, be 100% sure your recovery phrase can properly restore your crypto wallet. Check with your hardware wallet manufacturer to find instructions on how to confirm your recovery phrase.

4) Fill out the Recovery Phrase sheet

Copy the 12 or 24 recovery phrase generated from your hardware wallet (Ledger, Trezor, etc) onto the Recovery Phrase sheet.

Write each word from the recovery phrase in order using the space next to the corresponding number. Keep the 4 boxes to the right of the word empty.

4) Find the corresponding BIP39 number for each word

Use the BIP39 word list (in this booklet) to find the BIP39 4-digit number for each word. Write the 4-digits (including any 0’s) in the 4 boxes to right of each word.

Continue until all BIP39 numbers have been recorded for each of the words.

5) Double-check to make sure everything is correct

Use the BIP39 list to make sure the BIP39 4-digit number corresponds to the correct recovery word, in the correct order.

6) Mark the CRYO plates

Unscrew the CRYO plate and lay on a flat surface. Find the CRYO plate starting with 1-6 on the top row.

Each column represents a single word/BIP39 number in order. And each column (i.e. 1-6) has 4 sub-columns with grid cells that represent a single number from 0-9.

Start with column 1 on the plate. Find the first word and the corresponding 4-digit BIP39 number in the Recovery Phrase sheet.

Use your pen or permanent marker to make a “dot” in the grid square that corresponds to each digit.

For example, if the first word on the Recovery Phrase sheet is “alien”, the BIP39 number is “0051”. Find the CRYO plate with 1-6 on the top row.

Then in column 1 make a mark that corresponds to the digit 0 in sub-column 1. Then 0 in sub-column 2. Then 5 in sub-column 3. Then 1 in sub-column 4.

Continue for each word until complete. Double-check to make sure the numbers can recreate the recovery phrase in the correct order.

7) Use the punch tool to permanently mark each “dot”

Place the punch tool straight over over each mark. With downward force press firmly until the punch tool makes an indent onto the steel plate. Continue until all dots are indented.

You can either keep the pen marks or use a wet napkin to wipe away the ink.

8) Final safety measures

Check to make sure you are 100% certain the BIP39 numbers can recreate the original seed phrase. Then shred, burn or properly dispose of the Recovery Phrase sheet.

Screw the plates together and store your new CRYO seed backup in safe place! 

Conclusions: About CRYO

CRYO: Crypto Wallet Recovery Seed Phrase Cold Storage Backup. CRYO is a tough, metal recovery seed phrase backup for your crypto wallet. Made from fireproof, waterproof stainless steel cryptocurrency seed phrase storage. Protect your crypto with CRYO.

  • The patent-pending CRYO seed recovery backup prevents the total loss of your crypto. It works with all hardware wallets including Trezor, Ledger, Coldcard and KeepKey
  • This stainless steel crypto wallet is durable, rust-proof, water-proof, and fireproof (2200°F)
  • CRYO is compatible with any 12 or 24-word BIP39 recovery seed phrase. Convert your seed words into numbers using the BIP39 word list. Then mark your numbers onto the stainless steel plates.
  • Discreet, concealable and portable crypto cold wallet backup that fits in the palm of your hand. The steel recovery backup plates can be split apart for additional security.
  • Includes 2 outer plates for protection, 2 inner plates for crypto seed storage, 4 screws, 2 paper seed phrase cards, step-by-step instructions, BIP39 word & number list, and a dot marking tool.

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