Seed phrase explained: what it is and how to store it

What is a seed phrase?

A seed phrase is a set of either 12 or 24 plain English words. It’s sometimes called a recovery phrase or secret phrase. Whenever you create a crypto wallet, most wallets will generate this phrase for you right away, it's the critical piece that controls the wallet’s entire contents. With it, you or anyone else can regenerate all the private keys and addresses the wallet has ever created.

Most apps use a shared standard, known as BIP-39, which specifies which words can be used and how to turn them into wallet keys. So, you’re usually able to restore funds through any compatible app as long as you have the phrase. This single phrase is the foundation that every private key in your wallet is based on. If anyone else gets the phrase, they can spend everything. You can also use the same phrase with a hardware wallet if you want extra protection.

How to store a seed phrase safely

Write the phrase down by hand, following the order exactly as it was shown, and double-check each word.
Put this paper in a spot that’s dry, out of sight, and safe from fire or flooding. Some will use a locked safe or deposit box.
If losing that paper would be a total loss, keep a separate copy in another secure place.
Avoid creating any digital record: no photos, no screenshots, no online notes, no email, nothing typed on your phone or laptop.
Don’t enter the phrase on any app, website, or chat, even support staff should never ask for this.

Some people invest in metal plates to back up their seed phrase, as these usually survive fire or water better than paper does. But whichever way you store it, remember, anyone who can read the phrase can transfer your funds, so keep visibility tightly restricted.

What common mistakes lead to lost funds?

The biggest reasons for lost funds: saving the phrase on a device, entering it anywhere online after being asked by someone impersonating support, or getting the words wrong when copying. If you make a mistake in just one word, the backup stops working. So after writing it down, it’s a good idea to test if you can restore the wallet and see the same deposit address. Fake sites and scam apps often ask you to enter the phrase for “verification”, this is never genuine.

No one can stop a thief with your phrase. Stealing the phrase gives direct access to your funds, no matter the PIN or password protecting your wallet app. If you lose your only copy of the phrase, there’s generally no way to recover the coins, there’s no helpdesk or reset option. The price of crypto can change quickly as well, so losing access can impact your balance’s value.

Frequently asked questions

Is it safe to store my seed phrase in a password manager?

No, it’s not considered safe to store a seed phrase in a password manager. Password managers operate online or sync across your devices, so there’s a way in for malware or hackers if your devices or passwords are compromised. Most security professionals recommend keeping this phrase offline, on paper or metal, locked somewhere that only you can reach.

What happens if I lose my seed phrase?

If both your device and your seed phrase are lost, you likely won’t be able to restore the wallet or access the coins. The balance still exists on the blockchain, but there’s no way to sign transactions and spend it. Exchange logins work differently and don’t use a seed phrase; more details are in our article on custodial vs non-custodial wallets.