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Wallets & seed phrases

A wallet doesn’t hold bitcoin; it holds the keys that prove it’s yours. Learn the different kinds, and how to protect the few words that control everything.

Beginner3 min readUpdated October 2026

What a wallet really is

Your bitcoin never actually lives “in” a wallet. It lives on the blockchain, locked to your keys. A wallet is simply software (or a device) that stores your private keys and uses them to sign transactions.

That means whoever controls the keys controls the bitcoin. If an exchange holds them, you have an IOU. If you hold them, you have the real thing.

Not your keys, not your coins.Bitcoin proverb, learned the hard way at Mt. Gox and FTX

Types of wallets

TypeWho holds the keysGood forWatch out for
Exchange accountThe companyBuying, short-termHacks, freezes, bankruptcy
Mobile walletYou (on your phone)Spending money, learningPhone malware, loss
Desktop walletYou (on your computer)Managing hardware walletsComputer malware
Hardware walletYou (offline device)Long-term savingsLosing your backup
MultisigYou (several keys)Large savings, inheritanceMore complex to set up

A good rule: keep spending money in a hot wallet (connected to the internet, like cash in your pocket) and savings in cold storage (keys that never touch the internet, like a safe).

Wallets worth knowing

Your seed phrase

When you create a wallet, it shows you 12 or 24 ordinary words: your seed phrase (also called a recovery phrase or mnemonic). Those words can recreate every key in your wallet on any compatible device, anywhere in the world.

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Your seed phrase IS your bitcoin. Anyone who sees it can take everything. If you lose it and your device breaks, your bitcoin is gone forever.

Golden rules

  • Never type it into a phone, computer, website or app, except a brand-new hardware wallet during recovery.
  • Never photograph it, email it, store it in the cloud or a password manager.
  • Write it by hand exactly as shown, in order, and double-check every word.
  • Generate it yourself on a device you trust. A wallet that arrives with words already filled in is a scam.

Backing up properly

Paper burns and floods. For meaningful amounts, stamp or engrave your words into steel. Metal backups survive house fires and decades in a drawer.

Cryptosteel Capsule$$
Stainless steelLetter tiles

A compact steel tube you fill with letter tiles. Tough and discreet.

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Billfodl$
Stainless steelLetter tiles

A popular steel plate that holds a full 24-word phrase.

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Some links above are affiliate links. BeSovereign may earn a small commission at no extra cost to you.

A budget option: a plain steel washer set and a $15 letter-punch kit from a hardware store works just as well.

Where to keep it

  • Somewhere safe from fire, water and curious visitors, and somewhere you’ll remember.
  • Consider a second copy in a separate location (a trusted family member, a bank safe-deposit box).
  • More copies mean less risk of loss but more risk of theft. Multisig removes this trade-off (see Multisig & custody).

The optional passphrase

Many wallets support an extra passphrase (sometimes called the “25th word”). It creates an entirely separate wallet from the same seed. Someone who finds your 24 words but not your passphrase sees an empty or decoy wallet.

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A passphrase adds strong protection against physical theft. But forget it, and the funds are lost just as surely as losing the seed. Back it up separately from your seed words.

Test your recovery

A backup you’ve never tested is a hope, not a plan. With a small amount of bitcoin in the wallet:

  1. Note a receive addressWrite down the first address your wallet shows.
  2. Wipe or use a second deviceReset the device, or use a spare/compatible wallet.
  3. Restore from your backupEnter the words (and passphrase, if used).
  4. Check the address matchesIf the same first address appears with your balance, your backup works. Now you can confidently add more.

BeSovereign guides are for education only and are not financial, legal or tax advice. Products and prices change, so always check the official source before buying or moving funds.

Next guide

Hardware wallets

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